text TANGR2015 Heidelberg
Second international workshop on Tracer Applications of Noble Gas Radionuclides in the Geosciences
Heidelberg University, March 26 - 29, 2015
Kirchhoff-Institute Institute for Physics of Environmental Physics 1 Preface
TANGR2015 is a workshop on the progress in the technique and application of Atom Trap Trace Analyis (ATTA). It is a follow-up to the rst TANGR workshop, TANGR2012, which was held at the Argonne National Laboratory, Argonne, USA, in June 2012. It is organized in response to recent technical advances and new applications of Atom Trap Trace Analysis (ATTA), an analytical method for measuring the isotopes 81Kr, 85Kr, and 39Ar. The primary aim of the workshop is to discuss the technical progress of ATTA and thereby enable innovative and timely applications of the noble gas radionuclides to important scienti c problems in earth and environmental sciences, e.g. in the elds of groundwater hydrology, glaciology, oceanography, and paleoclimatology.
Contents
1 Preface 2
2 Participants3
3 Programme 4
4 Abstracts 7
5 Organisational information 21 5.1 Location...... 21 5.2 Registration desk...... 21 5.3 Talks...... 21 5.4 Posters...... 21 5.5 Public transport...... 21 5.6 SRH-guesthouse...... 21 5.7 help-line...... 22 5.8 Internet-Access...... 22 5.9 Welcome reception...... 22 5.10 Friday dinner...... 22 5.11 Conference dinner...... 22 5.12 Heidelberg city tour...... 22
2 2 Participants
Craig Aalseth Paci c Northwest National Laboratory Werner Aeschbach-Hertig Heidelberg University Henning Back Princeton University Jill Brandenberger Paci c Northwest National Laboratory Pascal Bohleber University of Maine Michael Deininger Heidelberg University Sven Ebser Heidelberg University Andrea Fischer Austrian Academy of Sciences Norbert Frank Heidelberg University Ronny Friedrich Institute of CEZ Achäometrie Zhongyi Feng Heidelberg University Michael Heidinger HydroIsotop Helene Homann Heidelberg University Shui-Ming Hu USTC Hefei Arne Kersting Heidelberg Unviersity Bernard Lavielle CENBG Bordeaux Andre Loose Columbia University Zheng-Tian Lu Argonne National Laboratory Gerald Kirchner ZNF Hamburg Rolf Kipfer Eawag/ETH Zuerich Tobias Kluge Heidelberg University Markus Kohler ZNF Hamburg Martin Kralik Umweltbundesamt, Vienna Peter Mueller Argonne National Laboratory Takuya Matsumoto IAEA Markus Oberthaler Heidelberg University Roland Purtschert University of Bern Monika Rhein University of Bremen Florian Ritterbusch Heidelberg University Clemens Schlosser BfS Freiburg Peter Schlosser Lamont-Doherty Earth Observatory Je Severinghaus Scripps Institution of Oceanography Carsten Sieveke ZNF Hamburg Axel Suckow CSIRO Adelaide Jürgen Sültenfuÿ University of Bremen Krzysztof Szymaniec National Physics Laboratory Toste Tanhua GEOMAR Kiel Reika Yokochi University of Illinois at Chicago
3 3 Programme
Thursday, March 26 Talks at the DPG spring meeting
9.45 - 10.30 DPG plenary talk Zheng-Tian Lu room PV IX Atom Trap, Krypton-81, and Global Groundwater 11.00 - 16.30 DPG-Symposium Applied Noble gas physics room C/gHS Bernard Lavielle, University of Bordeaux 11.00 - 11.30 Development of a new facility for measuring 81Kr and 85Kr at ultratrace level in environmental samples. 11.30 - 12.00 Andre Loose, Columbia University Atom counting system to measure trace krypton contamination in ultra-pure xenon 12.00 - 12.30 Clemens Schlosser, BfS Freiburg Krypton-85 and Radioxenon: Environmental Tracers and Indicators for Nuclear Activities 12.30 - 12.45 Ramakrishna Ramisetty, University of Bern Miniature High Sensitive Time-of-Flight Noble gas Mass spectrometer for very low gas measurements 12.45 - 13.00 Thomas Smith, University of Bern Studying the constancy of galactic cosmic rays using cosmogenic noble gases and radionuclides in iron meteorites 14.30 - 15.00 Don Porcelli, Oxford University Using Noble Gases to understand the History of Terrestrial Volatiles 15.00 - 15.30 Rolf Kipfer, Eawag/ETH Zurich Noble gas analysis in water: from temperature reconstruction over excess formation to oxygen turnover on environmentally relevant time scales 15.30 - 16.00 Peter Schlosser, Lamont-Doherty Earth Observatory Applications of Noble Gases in Oceanography 16.00 - 16.15 Oliver Huhn, University of Bremen Basal ice-shelf melting in the Weddell Sea inferred from oceanic noble-gas observations 16.15 -16.30 Axel Suckow, CSIRO Environmental Tracer and helium measurements in the context of Coal Seam Gas exploration 17.00, room G/gHS DPG session UP 10: Oceanography 19.00 room 01.403 INF227 TANGR2015 welcome reception bla
4 Friday, March 27
9.00 - 9.45 (PV XI) DPG plenary talk John Marshall: The oceans in a warming world 9.45 - 10.30 (PV XII) DPG plenary talk Berge Englert: Quantum measurements 10.45 - 11.00 Welcome (Aeschbach-Hertig, Oberthaler) 01.403 INF227
11.00 - 12.30 Session 1: ATTA 11.00 - 11.30 Peter Mueller, Argonne National Laboratory Next Generation Atom Trap Trace Analysis Apparatus at Argonne 11.30 - 12.00 Shui-Ming Hu, USTC Hefei The ATTA-Hefei instrument and its applications in radio-krypton dating 12.00 - 12.30 Markus Kohler, ZNF Hamburg All-optical Atom Trap Trace Analysis Apparatus
12.30 - 14.00 Lunch
14.00 - 15.30 Session 2: ATTA continued, LLC 14.00 - 14.30 Florian Ritterbusch / Sven Ebser, Heidelberg University Dating with Atom Trap Trace Analysis of 39Ar 14.30 - 15.00 Roland Purtschert, University of Bern Perspectives of Low-Level Counting in ATTA times 15.00 - 15.30 Craig Aalseth / Jill Brandenberger, PNNL Underground Measurements of 39Ar at the Paci c Northwest National Laboratory
15.30 - 16.00 Coee break
16.00 - 17.00 Session 3: Applications in groundwater hydrology 16.00 - 16.30 Takuya Matsumoto, IAEA Noble Gas Facility at the IAEA: Recent developments in dating old groundwater with 4He and 81Kr 16.30 - 17.00 Martin Kralik, Environmental Agency Austria Noble gas isotopes (3He, 85Kr) are useful for the risk assessment of monitoring wells and thermal springs in the Vienna Basin
17.00 Poster session / ATTA labtour ∼19.30 Dinner in Brauhaus Vetter in the old town of Heidelberg
5 Saturday, March 28
8.50 - 9.00 Introduction (Aeschbach-Hertig, Oberthaler) 9.00 - 10.00 Session 4: Applications in oceanography 9.00 - 9.30 Toste Tanhua, GEOMAR Kiel Constraining ocean ventilation with 39Ar measurements 9.30 - 10.00 Monika Rhein, University of Bremen 39Ar as a tool to study deep water spreading and storage of anthropogenic carbon in the Atlantic
10.00 - 10.30 Coee break 10.30 - 12.00 Session 5: Applications in glaciology and paleoclimatology 10.30 - 11.00 Je Severinghaus, Scripps Institution of Oceanography A test of 81Kr dating of glacial ice at Taylor Glacier, Antarctica 11.00 - 11.30 Pascal Bohleber / Helene Homan, Heidelberg University Towards new radiometric dating of glacier ice using 39Ar: Pilot studies in the European Alps 11.30 - 12.00 Andrea Fischer, Austrian Academy of Sciences The importance and perspectives of isotope dating for essential progress in revealing holocene climate and hydrology
12.00 - 14.00 Lunch at IUP and labtours (argon extraction / mass spectrometer) 14.00 - 15.30 Session 6: Other applications / Separation methods 14.00 - 14.30 Reika Yokochi, University of Chicago Pure Krypton in 60 minutes: New separation method for high sample throughput 14.30 - 15.00 Gerald Kirchner, ZNF Hamburg All-optical Atom Trap Trace Analysis of 85Kr a promising tool for nuclear safeguards 15.00 - 15.30 Henning O. Back, Princeton University The low radioactivity argon target for the Darkside-50 dark matter detector 15.30 - 16.00 Coee break 16.00 - 17.30 Session 7: Perspectives for ATTA and noble gas radioisotopes 16.00 - 16.15 Zheng-Tian Lu, Argonne National Laboratory 16.15 - 16.30 Peter Schlosser, Lamont-Doherty Earth Observatory 16.30 - 17.30 plenary discussion about strategic development of ATTA 19.00 Conference dinner
Sunday, March 29 Heidelberg city tour. Start: 10.45am at bus stop Marstallstrasse
6 4 Abstracts
Next Generation Atom Trap Trace Analysis Apparatus at Argonne
Peter Mueller Physics Division, Argonne National Laboratory, Argonne, IL 60517, USA
The long-lived noble-gas isotope 81Kr is an ideal tracer for old water and ice samples in the age range of 105106 years, a range beyond the reach of 14C. Based on the development of Atom Trap Trace Analysis (ATTA), 81Kr-dating is now available to the earth science community at large. Since 2012, we have utilized our third generation ATTA instrument to participate in 17 international collaborative projects, and have analyzed more than 150 groundwater and ice samples that were extracted from all seven continents. At the same time, we have explored and implemented new techniques leading towards improvements on both sample size requirement and measurement precision. In particular, reduced sample sizes are anticipated to enable more extensive studies of ice samples where larger quantities are not easily accessible, such as those originating from ice cores. In this talk I will present our recent developments and future plans for the ATTA laboratory at Argonne. This work is supported by the U.S. Department of Energy, O ce of Science, O ce of Nuclear Physics, under contract DE-AC02-06CH11357.
The ATTA-Hefei instrument and its applications in radio-krypton dating
Guo-Min Yang, Le-Yi Tu, Cun-Feng Cheng, Yu R. Sun, Shui-Ming Hu* Hefei National Laboratory for Physical Sciences at Micro-scale, University of Science and Technology of China, Hefei, Anhui 230026, China [email protected]
Atom Trap Trace Analysis (ATTA)[1] is a new method determining the abundance of particu- lar isotope by counting the atoms in a magneto-optic trap (MOT). An ATTA instrument has been successfully built in Hefei (China) for radio-krypton dating. The loading rate of a stable isotope 83Kr (83Kr/Kr = 11.5 %), determined by a quench and capture method, is used as a reference to normalize the single atom counting rate [2]. The quantitative reliability was veri ed by an inter-comparison of the ATTA measurements and the decay counting measurements of dierent 85Kr abundances in a group of krypton samples [3]. A portable groundwater sampling apparatus has also been built for in situ collection of solvated gases from groundwater. It has been applied to sample tens of groundwater samples in North China Plain, in Xinjiang, and in Leizhou peninsula (China). The krypton/argon contents in the gas samples are extracted with an e ciency of over 90 % by a home-made puri cation system [4], which can handle gas samples with a size of 1-50 L. Radio-krypton analysis of the groundwater samples in North China Plain reveals a 81Kr/Kr abundance as low as 5 % of that in modern atmosphere, indicating a 81Kr age of 1.0±0.1 million years.
References [1] C.-Y. Chen, Y. M. Li, K. Bailey, T. P. O'Connor, L. Young and Z.-T. Lu, Ultrasensitive
7 isotope trace analysis with a magneto-optical trap, Science 286, 1139-1141 (1999) [2] C.F. Cheng, G.M. Yang, W. Jiang, Y.R. Sun, L.Y. Tu and S.M. Hu, Normalization of the single atom counting rate in an atom trap, Opt. Lett. 38, 3133 (2013). [3] G.-M. Yang, C.-F. Cheng, W. Jiang, Z.-T. Lu, R. Purtschert, Y.-R. Sun, L.-Y. Tu and S.-M. Hu, Analysis of 85Kr: a comparison at the 10−14 level using micro-liter samples, Sci. Rep. 3, 1596 (2013) [4] L.-Y. Tu, G.-M. Yang, C.-F. Cheng, G.-L. Liu, X.-Y. Zhang, and S.-M. Hu, Analysis of 85Kr and 81Kr in a few liters of air, Anal. Chem. 86, 4002 (2014)
All-optical Atom Trap Trace Analysis Apparatus
Markus Kohler1, Peter Sahling1, Simon Hebel1, Carsten Sieveke1, Christoph Becker2, Klaus Sengstock2 1) Carl Friedrich von Weizsäcker Centre for Science and Peace Research, University of Hamburg, Beim Schlump 83, 20144 Hamburg 2) Institut für Laser-Physik, University of Hamburg, 22761 Hamburg
Sensitive measurement techniques for the detection of anthropogenic tracers demand mea- surement resolutions down to single atom level, as it has been demonstrated by the rst Atom Trap Trace Analysis experiments. However, technical limitations have lowered the throughput to about 200 samples per year per machine. We have developed an all-optical apparatus which has the potential to allow both higher sample throughput and smaller sample sizes than current techniques. This apparatus is based on a self-made VUV-lamp and a 2D-3D magneto-optical trap setup; in the two dimensional trap metastable krypton is produced all-optically and a beam of atoms is formed by Doppler-cooling simultaneously. 84Kr and 83Kr have been cooled and trapped with this setup, starting with atom clouds of thousands of atoms down to the single atom regime. This demonstrates that an all-optical ATTA-apparatus is feasible to overcome the technical problems of rf-driven setups. In this talk, the Hamburg krypton analysis sequence will be presented including air sampling, krypton separation and the ATTA setup. Recent measurements will be discussed.
Dating with Atom Trap Trace Analysis of 39Ar
Florian Ritterbusch1,2 / Sven Ebser1, Zhongyi Feng1, Anke Heilmann1, Arne Kersting2, Helene Homann2, Pascal Bohleber2, Werner Aeschbach-Hertig2 and Markus K. Oberthaler1 1) Kirchho-Institute for Physics, Heidelberg, Germany 2) Institute of Environmental Physics, Heidelberg, Germany
Atom Trap Trace Analysis (ATTA) for rare krypton isotopes has been developed in the past two decades and is now routinely available for the Earth science community [Jiang et al., 2012]. Implementing ATTA for 39Ar is challenging since its relative abundance is more than 600 times lower compared to 81Kr and it moreover has no abundant reference isotope with hyper ne structure. However, the applicability of ATTA to 39Ar has been demonstrated in a proof of principle experiment [Jiang et al.,2011], although the achieved 39Ar count rate of 0.22 atoms/h was too low for practical dating applications. We report on a signi cant improvement of the 39Ar
8 count rate leading to 3.6 atoms/h, which allowed for the rst dating of groundwater samples with 39Ar-ATTA [Ritterbusch et al.,2014]. For the rst demonstration measurements, several tons of water (corresponding to 500- 800 ml STP argon) were sampled to rule out any cross-sample contamination. However, the current limit due to contamination embedded in the system is only around 10 ml STP argon, corresponding to about 10 kg of ice and 25 l of water, which is expected to decrease upon replac- ing contaminated vacuum parts. Due to the large ice volume presently required, we performed a pilot study at the tongue of the Gorner glacier in the swiss alps, where old ice can be sampled from the surface in large blocks (∼10 kg). The argon is separated from the air entrapped in the glacier ice by a titanium sponge with high e ciency and purity (both >99%). The 39Ar-analysis of the resulting argon samples is currently in progress. In this talk, we will present recent developments on the 39Ar-ATTA system as well as our dating eorts on groundwater, glacier ice and ocean water.
References [1] W. Jiang, et al. (2012), An atom counter for measuring 81Kr and 85Kr in environmental samples. Geochimica et Cosmochimica Acta, 91, 16, doi:10.1016/j.gca.2012.05.019. [2] W. Jiang, et al. (2011), 39Ar Detection at the 10−16 Isotopic Abundance Level with Atom Trap Trace Analysis. Phys. Rev. Lett., 10, 103, 001, doi:10.1103/PhysRevLett.106.103001. [3] Ritterbusch et al. (2014), Groundwater dating with Atom Trap Trace Analysis of 39Ar, Geophys. Res. Lett, 41, 67586764, doi:10.1002/2014GL061120.
Perspectives of Low-Level Counting in ATTA times
Roland Purtschert University of Bern, Switzerland
Since decades Low-Level Counting (LLC) was the only detection method for radioactive noble gases at environmental levels. With the development of Atom Trap Trace Analyses (ATTA) 81 for Kr (T1/2: 229 kyr) a new era was rising at the horizon. This isotope which was before not detectable by LLC can in the meanwhile be measured routinely in water and ice together 85 with Kr (T1/2: 10.8 yr). The combination of these two isotopes made the method originally available ( rst generation ATTA measured 81Kr/85Kr ratios) and is now an important extension by means of mixing calculations and as a contamination monitor. With the recent great success 39 to measure also Ar (T1/2: 269 yr) by ATTA the method will become much more common and feasible because of a signi cantly reduced sample size, what is crucial particularly for 37 oceanography. For groundwater dating the short lived Ar (T1/2: 35 days) has the potential to provide information about the signi cance of underground production of 39Ar, the main remaining limiting factor of this method. The simultaneous measurement of all four Kr and Ar isotopes at the same sample gas is therefore the ultimate goal of radioactive noble gas dating. In the talk a review is given in how far LLC could contribute to the establishment of ATTA, which are the strength with regards to the above mentioned isotope combinations and why both methods, LLC and ATTA, could complete each other in the near future.
9 Underground Measurements of 39Ar at the Paci c Northwest National Laboratory
Craig Aalseth and Jill Brandenberger Paci c North-West National Laboratory
In 2010 the Paci c Northwest National Laboratory completed a new shallow underground laboratory to support ultra-pure materials research, radiation detector development, and ultra- sensitive nuclear measurements. Since then, a suite of new instrumentation has been developed, including a large high-e ciency high-purity germanium gamma spectrometer array and ultra- low-background gas proportional counters. Some of the rst measurements done with the new gas proportional counters were of 37Ar; more recent work has established an 39Ar measurement capability to support groundwater age-dating. Endpoint measurements have been performed to calibrate detector response to 39Ar by comparing modern and geologic argon signals. Commer- cial argon sourced from the atmosphere is used as a modern end-point, while collaborators at Fermi National Accelerator Laboratory (part of the DarkSide collaboration) have made avail- able geologic argon to provide a background measurement free of 39Ar. The geologic argon has been previously examined by the DarkSide collaboration and found to have an 39Ar content less than 0.65 % of that found in atmospheric argon. A system for degassing water and collecting gas samples has been assembled and tested. An argon puri cation chemistry process for sam- pled gas has been developed and is used for both 39Ar and 37Ar measurements of environmental gas samples. These capabilities were used to do an initial demonstration measurement against a convenient local groundwater source located in Eastern Washington State, in the USA. This initial sample yielded an 39Ar age of 125±38 years (90% CL). A veri cation sampling of ground- water wells in Fresno, CA, USA, was conducted in September 2014 in collaboration with USGS. The wells were selected based on age determined using tritium and 14C and estimated to be around 400 years old. A simultaneous sampling with USGS will allow a direct comparison of groundwater age modeling over the age continuum from <50-1000 years. Current work is focused on argon recovery and 39Ar radiometric measurement for these samples in 2015.
Noble Gas Facility at the IAEA: Recent developments in dating old groundwater with 4He and 81Kr
Takuya Matsumoto and Pradeep K. Aggarwal International Atomic Energy Agency, Vienna, Austria [email protected]
The Isotope Hydrology Laboratory (IHL) of the IAEA has been working on to facilitate the use of noble gas based groundwater dating techniques for assisting member states' water resource management. The analytical facility for noble gas isotopes has been fully operational since late 00's and producing high quality noble gas data with high throughput. Our current scienti c challenge is characterization of large and old aquifers with limited hydrogeological information by combining information from radiogenic 4He and cosmogenic 81Kr dissolved in groundwater samples to obtain better estimate of groundwater residence time of up to 1 million years, and to provide the ability to reliably constrain groundwater models. This eort is made through close collaboration with the ATTA laboratory at the Argonne National Laboratory, and accompanied by the development of eld gas sampling device and a krypton puri cation system in the IHL. In this contribution, we will present our recent developments in assessing 4He input ux into the Guarani aquifer in Brazil by utilizing groundwater ages determined by
10 81Kr and a conceptual groundwater model (Aggarwal et al., Nature Geoscience, 8, 35-39, 2015). In our method, we estimated an optimum combination of basal 4He ux and vertical diusion rate in the aquifer by nding a best t between a series of pairs of observed and modeled 4He concentrations with respective 81Kr ages. Our methodology is being further tested in aquifers in the North China Plain.
Noble gas isotopes (3He, 85Kr) are useful for the risk assessment of monitoring wells and thermal springs in the Vienna Basin
Martin Kralik1,2 1) Department of Environmental Geosciences, University of Vienna, Althanstr. 14, 1090 Vienna, Austria 2) Environmental Agency Austria, Spittelauer Lände 5, 1090 Vienna, Austria
The Mean Residence Time (MRT) of groundwater is required to develop reliable hydroge- ological concepts of groundwater bodies as a prerequisite for a quali ed monitoring and risk assessment. MRTs from monitoring springs and wells help to assess if groundwater bodies are at risk or not at risk failing to meet good groundwater quantitative and chemical status according to the Water Framework Directive and therefore not being able to use the ground- water as drinking water or industrial water resource. A combination of 18O/2H, 3H, 3H/3He 85 35 and in some cases additional CFC, SF6, Kr and S measurements allow to calculate reliable MRTs in groundwater bodies (Kralik et al. 2015). The gravel aquifer of the Southern Vienna Basin is a very important backup drinking water resource for the city of Vienna. A discharge location, the Fischa-Dagnitz (Stolp et al. 2010) spring in the Southern Vienna Basin, Austria, 18 2 3 222 85 was re-investigated and sampled for stable isotopes O/ H, tritium, He, SF6, Rn and Kr (Gerber et al., 2012, Kralik et al. 2012). In combination with completing parameters (stable isotopes, geochemistry, ux measurements) and model calculations the gas exchange dynamics between the out owing river water and the atmosphere is estimated till 2 km downstream of the spring. The Eastern Calcareous Alps are plunging under the gravel aquifer and Alpine precipitation is assumed to be moving towards NE through the Vienna Basin and upwelling at several fault zones as famous thermal springs (e.g. Baden, Bad Vöslau, Oberlaa Vienna). The measurements of tritium, tritium/helium-3 and Krypton-85 yielded at the Fischa-Dagnitz Spring and a monitoring well 300 m above the spring model-ages between 810 years. Frequent tritium measurements of the same spring since 1962, however, allow a mean dispersion age of 19 years. Several monitoring wells with tritium free groundwater indicate a mixture of waters in ltrating as precipitation in the Eastern Calcareous Alps in the West and the local precip- itation in the Vienna Basin itself. The tritium input model age is interpreted as the Mean Residence Time since in ltration in the Eastern Calcareous Alps while the gas model ages are the Mean Residence Time as groundwater in the gravel aquifer. Measurements of 85Kr, 3 3 222 H/ Hetrit, SF6 and Rn from the Fischer-Dagnitz Spring till 2 km downstream showed no complete equilibration with the atmosphere and allowed to estimate by model calculations the gas exchange dynamics between the stream water and the atmosphere. As 14C-measurements on the thermal springs upwelling from the underlying deep carbonate aquifers are attached with high uncertainties due to the unknown amount of dissolved carbonates noble gas isotopes (39Ar, 81Kr) and ATTA could unravel the transport path of these thermal water springs and therefore help to protect them for future generations.
11 References [1] Gerber, C., Purtschert, R., Kralik, M., Humer, F., Sültenfuss, J., Darling, G.W., Gooddy, D., 2012. Suitability and potential of environmental tracers for base- ow determination in streams: EGU2012-14066, EGU 12. European Geosciences Union, Vienna. [2] Kralik, M.; Humer, F.; Brielmann, H.; Sültenfuÿ, J.; Purtschert, R.; Gerber, C. (2012): ISOMETH Endbericht: Evaluierung von Isotopen- und Spurengasmethoden zur Ermittlung von Grundwasseraltern: Fischa-Dagnitz-Quelle und Wagna Lysimeter. 27 S., Datenbank für Forschung zur Nachhaltigen Entwicklung (DaFNE), Bundesministerium für Land- und Forst- wirtschaft, Umwelt und Wasserwirtschaft, Wien. http://www.lebensministerium.at/publikationen/wasser/ ieszgewaesser/ISOMETHEndbericht.html [3] Kralik, M., Brielmann, H., Humer, F., Wemhöhner, U. (2015): Grundwasseralter aus- gewählter Grundwasserkörper, 2011/2012: Eferdinger Becken, Hügelland Rabnitz, Ikvatal, In- ntal, Seewinkel, Stremtal, Südl. Wr. Becken, Tullner Feld, Unteres Murtal, Vöckla-Ager-Traun- Alm, Weinviertel. 230 S., Bericht d. Bundesministerium f. Land-, Forstwirtschaft, Umwelt und Wasser, Wien. http://www.bmlfuw.gv.at/publikationen/wasser/Grundwasseralter-ausgewaehlter- Grundwasserkoerper-2010-2014.html [4] Stolp, B.J., Solomon, D.K., Suckow, A., Vitvar, T., Rank, D., Aggarwal, P.K., Han, L.-F., 2010. Age dating base ow at springs and gaining streams using helium-3 and tritium: Fischa- Dagnitz system, southern Vienna Basin, Austria. Water Resources Research 46.
Constraining ocean ventilation with 39Ar measurements
Toste Tanhua and Tim Stöven GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Ventilation is the primary conduit for passing signals from the atmosphere and the climatic system to the interior of the ocean. For instance, ventilation directly in uences the distributions and controls of natural and anthropogenic carbon which in turn directly in uences the CO2 concentration in the atmosphere, and hence the radiative forcing of the earth's climate system. Rates of ocean ventilation can be determined by measurements of chemical tracers, such as the 39 transient tracers CFCs or SF6, or by radioactively decaying tracers such as Ar, or tracers that fall under both categories such as 14C and 3He. The time-scale of ocean ventilation is in the order of 1000 years, so that the decay-time of 39Ar is potentially an ideal tracer for the deep interior ocean. There is no single ventilation-time but rather a spectrum of ages, often referred to as a Transit Time Distribution (TTD), that de nes the ventilation in a physical sense. Here we report on a theoretical study to empirically determine the TTD of the interior ocean by simultaneous measurements of several transient tracers and demonstrate age ranges where 39Ar measurements are particularly useful for constraining the TTD. We will show example from the Southern and Tropical Atlantic Ocean using the archive of historic 39Ar measurements made by Low-Level Counting, demonstrating the additional constrains on the TTD.
12 39Ar as a tool to study deep water spreading and storage of anthropogenic carbon in the Atlantic
Monika Rhein, Oliver Huhn, Reiner Steinfeldt, Jürgen Sültenfuÿ IUP / MARUM, Bremen University, Germany
We present the potential use of combined measurements of chloro uorocarbon, sulphurhex- 39 a uoride (SF6), and Ar to improve the calculation of deep water spreading and of the storage of anthropogenic carbon in the deep Atlantic. Sampling of 39Ar is planned to begin in summer 2015 in the subpolar North Atlantic on our cruise with RV MERIAN (MSM43) and in the Southern Ocean in December 2015 / January 2016 with RV POLARSTERN.
A test of 81Kr dating of glacial ice at Taylor Glacier, Antarctica
C. Buizert1, D. Baggenstos2, R. Purtschert3, Z.-T. Lu4, T. Bauska1, E. Brook1, J. Severinghaus2 1) Oregon State University, Corvallis, Oregon USA 2) Scripps Institution of Oceanography, La Jolla, California USA 3) Climate and Environmental Physics, University of Bern, Bern, Switzerland 4) Argonne National Laboratory, Argonne, Illinois USA
We present successful 81Kr-Kr radiometric dating of ancient polar ice. Krypton was extracted from the air bubbles in four 350 kg polar ice samples from Taylor Glacier in the McMurdo Dry Valleys, Antarctica, and dated using Atom Trap Trace Analysis (ATTA). The 81Kr radiometric ages agree broadly with independent age estimates obtained from stratigraphic dating tech- niques with a mean absolute age oset of 6±2.5 ka. Our experimental methods and sampling strategy are validated by (i) 85Kr and 39Ar analyses that show the samples to be free of mod- ern air contamination and (ii) air content measurements that show the ice did not experience gas loss. We estimate the error in the 81Kr ages due to past geomagnetic variability to be below 3 ka. We show that ice from the previous interglacial period (Marine Isotope Stage 5e, 130115 ka before present) can be found in abundance near the surface of Taylor Glacier. Our study paves the way for reliable radiometric dating of ancient ice in blue ice areas and margin sites where large samples are available, greatly enhancing their scienti c value as archives of old ice and meteorites. At present, ATTA 81Kr analysis requires a 4080 kg ice sample; as sample requirements continue to decrease, 81Kr dating of ice cores is a future possibility. Radiokrypton dating will be useful in searching for 1.5 million-year-old ice to test the hypothesis that falling atmospheric CO2 caused the change from 41 kyr glacial cycles to quasi-100 kyr cycles, the ag- ship goal of the International Partnerships in Ice Core Sciences (IPICS).
13 Towards new radiometric dating of glacier ice using 39Ar: Pilot studies in the European Alps
Pascal Bohleber1,2, Helene Homann1, Arne Kersting1, Florian Ritterbusch1,3, Sven Ebser3, Zhongyi Feng3, Werner Aeschbach-Hertig1 and Markus K. Oberthaler3 1) Institute of Environmental Physics, Heidelberg University, Germany 2) Climate Change Institute, University of Maine, USA 3) Kirchho-Institute for Physics, Heidelberg University, Germany
Ice cores drilled at non-temperated high Alpine glaciers oer continuous climate records at mid-latitudes, supplementing their polar counterparts. Due to their comparatively limited ice thickness, obtaining long-term records from Alpine glaciers becomes possible only by low net accumulation and rapid layer thinning, which hampers conventional dating methods by annual layer counting. Cold based summit glaciers at lower elevations do not preserve a continuous stratigraphy. However, these glaciers can still oer valuable paleoclimate information since past ice-free conditions may be inferred from constraining the maximum age of basal ice. Hence, fully exploiting paleoclimate signals stored at sedimentary and non-sedimentary glacier archives calls for new ways of obtaining age information from radiometric methods. Sophisticated micro- radiocarbon analysis of glacier ice has been recently developed at the Institute of Environmental Physics. Apart from low carbon concentrations, special challenges arise from biases by in-situ production (dissolved organic fraction) and old organic soil dust intake (particulate organic fraction). In this context, assistance may come from future application of noble gas radionu- clides, rst and foremost by 39Ar, since matching the expected age span of 100-1000 years. Due to the large ice sample volume presently required for 39Ar extraction, we performed a pilot study at the glacier tongue of Grenzgletscher, where cold ice from the old bottom layers of the Monte Rosa summit glacier is resurfacing. The intricate glaciological settings of the polyther- mal Grenzgletscher resemble to some extent polar ice properties while oering ideal sampling conditions: Large blocks (in the order of 10 kg) of cold ice can be cut out of the glacier surface using a chain saw. Here we present our rst results from a sampling campaign in summer 2014 dedicated to obtaining ice blocks for 39Ar analysis. Constraints on source region and ice age are investigated based on stable water isotope and radiocarbon analysis, respectively. Thereby, we are setting the stage for assessing results from ongoing 39Ar analysis. In the light of our ndings at Grenzgletscher, other alpine glaciers that have been recently explored for old basal ice may serve as promising future targets for 39Ar dating of comparatively large ice samples.
14 The importance and perspectives of isotope dating for essential progress in revealing holocene climate and hydrology
Andrea Fischer Institute for Interdisciplinary Mountain Research, Austrian Academy of Sciences, Innsbruck, Austria
Cold sedimentary ice archives, which still exist in the highest summit ranges of the Alps, hold an as yet unearthed treasure in climate archives. Investigations of past climatic change are more and more shifting from the analysis of coarse global mean values to analysing regional variability, which allow interpretations of switches in predominant atmospheric ow and the related processes. This is an important step towards a deeper understanding of present and future climatic changes. Precipitation, a parameter with shorter and fewer records and thus higher uncertainties, plays a very important role for most ecological systems, but also for econ- omy. Proxy records for Holocene precipitation are sparse, and the link to today's precipitation rates often is weak as a result of today's high uncertainties in determining basin precipitation. In Alpine glaciology, one of the most controversially discussed topic was if the Alps could be expected to lose their glaciers in the next years or decades completely, or not. As future glacier development is related to future climate (available in scenarios in coarse resolution) and current ice thickness (known with high uncertainties), information about glacier minima in high eleva- tions during the Holocene would be helpful to answer this question. Last but not least, few long term climate records exist today for high altitudes or remote areas. For all above named gaps of knowledge, the application and further development of isotope analysis of Alpine sedimentary ice provides a major step forwards: Dating ice stratigraphy, regardless if continuous or discontinuous, reveals information on past mass balances, mainly governed by summer temperatures and winter precipitation. Only Alpine few records exist so far, more records are needed to be able to increase our understanding of past weather (and past ecology, hydrology, natural disasters). Findings on a complete loss of Alpine glaciers during the Holocene can only be achieved by dating basal ice of highest regions of current glaciers, showing if the ice in these regions, where we currently have no information, had been gone during past warm periods or not. The new methods of radiometric dating (39Ar, micro-radiocarbon methods) are a major step forward in lling the gaps of our current knowledge, heading to a more complete and regional diversi ed picture of climate change and related changes in ecological and hydrological systems.
15 Pure Krypton in 60 minutes: New separation method for high sample throughput
Reika Yokochi Department of Geophysical Sciences, The University of Chicago, Chicago IL, U.S.A.
Anticipated advance in ATTA technique may enable radiokrypton analysis of multiple sam- ples per day in near future. We are therefore developing an improved system for puri cation of Kr from air-like bulk gas for handling high sample throughput. The outline of the newly constructed system is similar to the device reported in Yokochi et al. (2008), except that the cryogenic distillation process is omitted in the current system. It is because the amount of Kr required (hence bulk gas to be processed) for ATTA analyses signi cantly decreased from ATTA2 (Sturchio et al., 2004) to ATTA3 (Jiang et al., 2012). The omission signi cantly reduces the time required for Kr puri cation, as the rate of cryogenic distillation is a time- limiting factor. The newly developed Kr puri cation system is based on gas chromatography with continuous monitoring of gas e uent composition using a quadrupole mass spectrometer (QMS). The sample gas rst goes through a ow path consisting of cryogenic trap at 77 K (optional for sample containing minor amount of CO2), molecular sieve 4A beads bed, and an activated charcoal column (SCA0) at −135 ◦C at 0.5 liter/minutes. This relatively fast ow process removes H2O, CO2 and a large fraction of bulk gas (N2,O2, Ar) and concentrates Kr in SCA0. Subsequently, SCA0 is gradually heated to desorb most remaining fraction of the bulk gas. A small amount of bulk gas remaining in SCA0 is then transferred with Kr and CH4 to a molecular sieve 5A column held at 77 K, followed by chromatographic separation at −125 ◦C to isolate Kr. The isolated Kr is then transferred to a sample container after exposed to a Ti sponge getter at moderate temperature. At the presence of CH4 in large quantity, multiple passage of molecular 5A column will complete the separation. This system is currently able to extract pure Kr from up to 15 liter STP of bulk gas with an extraction e ciency of >95 % (no detectable Kr loss within uncertainty). For a 10-liter STP sample without excessive amount of
CH4, the Kr separation procedure takes 75 minutes at present, and it is expected that foreseen modi cations will reduce the operation time by 15 minutes. The system is designed such that adsorbent columns can easily be replaced to smaller sizes if required ATTA sample size re- duces in future, which will further reduce the separation time. The new Kr puri cation system has successfully been deployed for puri cation of gases extracted from Israeli groundwater of various chemical compositions (CO2 up to 60 %, CH4 up to 20 %) as well as atmospheric air samples from Chicago. Acknowledgment is made to the University of Chicago - Argonne - Ben Gurion University Collaborative Research Program on Water Resources and to the Donors of the American Chemical Society Petroleum Research Fund for support of this research.
16 All-optical Atom Trap Trace Analysis of 85Kr: a promising tool for nuclear safeguards
Gerald Kirchner1, Clemens Schlosser2 1) ZNF Hamburg 2) BfS Freiburg
Krypton-85 is an anthropogenic isotope produced in nuclear reactors by ssion processes. Its dominating source in the environment is from emission during the chemical isolation of plutonium from spent fuel. Since 85Kr is of negligible radiological concern, it is released with the o-gas stream of nuclear fuel reprocessing plants, although retention technologies have been developed and tested successfully. Since separation of plutonium is an essential step in its use for military purposes, emission of 85Kr may indicate a violation of the Nuclear Non-Proliferation Treaty, if originating from a location at which nuclear reprocessing activities have not been declared to the International Atomic Energy Agency. So far 85Kr is not used for nuclear safeguards. In addition to some political reluctance, two major physical challenges have to be met. First, due to its long half-life, 85Kr emitted by commercial nuclear fuel reprocessing plants accumulates in the atmosphere. This resulted in an increasing background concentration with largely unknown temporal and spatial variability. Only recently, this background started to decrease. Second, remote from an emitter sampling times and sizes needed for nuclear disintegration measurements are likely to diminish any transient 85Kr peak and to limit the probability of identifying the source location by atmospheric transport modeling. The development and routine application of ATTA oers the perspective to resolve these problems. This initiated renewed interest in evaluating the use of 85Kr for nuclear safeguards. Our concepts for using the Hamburg ATTA facility for this application are presented.
The low radioactivity argon target for the Darkside-50 dark matter detector
Henning O. Back Princeton University
Although the concentration of 39Ar in argon from the atmosphere is very low at <10−15, it still amounts to 1 Bq of 39Ar decays per kilogram of argon. This level of radioactive contamination would be the limiting background for argon-based dark matter detectors if we had not discovered an underground source of argon that is nearly free of 39Ar. Carbon dioxide wells in southwestern Colorado in the United States have been found to contain approximately 500 ppm of argon as a contamination, and the current limit on the 39Ar concentration is less than a factor of 150 below atmospheric concentrations. Through large-scale cryogenic and chromatographic methods, we have developed an extensive system of processes to extract the low radioactivity underground argon (UAr) from the CO2 and purify it for use in the Darkside-50 dark matter search experiment, a dual-phase liquid argon TPC. This large-scale operation has produced the world's largest supply of low radioactivity argon (>150 kg), and in this talk, I will detail the entire process and our current status.
17 Poster Contributions
A new facility for measuring radioactive krypton isotopes 81Kr and 85Kr
B. Laviellea, E. Gilaberta, B. Thomasa, C. Moulinb, S. Topinb, F. Pointurierb a) University of Bordeaux - CENBG CNRS Chemin du Solarium, BP 120, 33175 Gradignan Cedex, France. ([email protected]) b) CEA-DASE, F-91297 Arpajon, France
Radioactive isotopes of noble gases are considered as powerful and sensitive tracers for en- vironmental studies. In particular, 85Kr (half-live 10.76 years), and 81Kr (229 000 years) have been used for age dating groundwaters and polar ice sheets [1,8] as well as extraterrestrial sample studies [9,11]. Due to their chemical inertness, noble gases have the great advantage to be easily extracted with high e ciency from a large quantity of environmental samples (atmo- sphere, water, ice). However their extremely low concentration in the environmental samples implies the implementation of very sensitive and sophisticated detection techniques. A new mass spectrometer has been built at CENBG for measuring very small Kr abundances. This instrument consists of a resonant ionization ion source, a cryogenic sample concentrator and a time-of- ight mass analyzer [12]. It is based on a similar design to the instrument developed at IRIM, Knoxville, Tennessee University [13,14] and to the RELAX spectrometer operating at Manchester University [15,16]. The current detection limit is below 1000 atoms of krypton. With the time-of- ight technique, Kr isotope multi collection is performed using a single detector. For the detection of very small Kr isotopes at the mass M (81 or 85) with extremely high sensitivity, the ratio signal to noise can be seriously altered by the saturation of the de- tector (blind eect) due to the detection of large number of atoms at the mass M-1 (80 or 84) a few tens of ns before. Therefore an additional device has been developed at CENBG allowing the mass selection of the Kr isotopes to be analyzed. By using a time synchronized very fast pulse generator, it allows the de ection of major stable Kr isotopes before impacting the detector. Thus the abundance sensitivity of the mass spectrometer is signi cantly improved.
References [1] H. Oeschger. Nucl. Instr. and Meth. 1987, B 29, 196. [2] S.D. Kramer et al.. Nucl. Instr. and Meth. 1987, B 17, 395-401. [3] B.E. Lehmann et al. J. Geophys. Res. 1985, 90, 11,547-11,551. [4] B.E. Lehmann et al. Applied Geochemistry, 1991, Vol. 6, No.4, 425-434. [5] P. Collon et al. Earth Planet. Sci. Lett. 2000, 182, 103-113. [6] N. C. Sturchio, et al. Geophys. Res. Lett. 2004, 31, L05503 (1-4). [7] N.C. Sturchio et al. Journal of Contaminant Hydrology 2014, 160, 1220. [8] C. Buizert et al. Proc. Natl. Acad. Sci. USA 13 May 2014: 6876-6881. [9] O. Eugster. Earth Planet. Sci. Lett. 1967, 2, 77-82. [10] O. eugster et al. Meteorit. & Planet. Sci 2002, 37, 1345-136. [11] I. Strashnov · J. D. Gilmour, Hyper ne Interact (2014) 227:259-270. [12] Lavielle B. et al, Met. Planet. Sci. 41 A104. [13] Thonnard N. et al (1987) NIM B29, 398-406. [14] Lehmann B.E. et al (1991) Appl. Geochem. 6, 419-423. [15] Gilmour J.D. et al (1991) Meas. Sci. Technol. 2, 589-595. [16] Gilmour J.D. (1994) Rev. Sci. Instrum.65(3), 617-625.
18 The CSIRO Environmental Tracer and Noble Gas Facility in Adelaide Axel Suckow CSIRO Land and Water Flagship, Gate 5, Waite Rd., Urrbrae, SA 5064 Australia
The CSIRO laboratory at the Waite Campus in Adelaide is one of the earliest installations of an isotope laboratory for environmental studies in Australia. For decades the bread-and-butter analyses were the classical isotope tracers: stable isotopes of the water molecule, tritium, radiocarbon. Decrease of tritium levels in Australian precipitation created the rst shift, away from analysing tritium in the 1970s and early 1980s towards CFCs in the early 1990s and towards SF6 later since 2000. These are still the main tools for groundwater timescales of decades. Also 14C, measured in the 1970s by benzene synthesis and liquid scintillation counting (LSC), later measured by direct absorption and LSC, since 2012 is completely outsourced to AMS laboratories. However, 14C and also 36Cl stayed and will always be very important tools for Australian groundwater, since the aridity of the continent (small recharge rates) and absence of large mountain ranges (small gradients) result in very long travel times of groundwater. To complement these two tracers with their inherent uncertainties due to geochemical interaction, a small noble gas line was installed in 2008/2009 and since then successfully measures He and Ne with comparably small throughput (150 samples/year) and low accuracy (5 %). The success of the noble gas data and a nal breakdown of the outdated stable isotope mass spectrometry system in 2012 triggered a new orientation of the Environmental Tracer and Noble Gas Laboratory (ETNoGaLa) towards noble gases and their radioactive isotopes. At present a new mass spectrometric noble gas system is under construction with the following target features:
Measure the whole suite of noble gases (He, Ne, Ar, Kr, Xe) in water samples Measurement of He concentration from solubility equilibrium to 100 000 times this value Capability to deal with comparably large amounts of methane (1 cc/copper tube) Sample types: Copper tubes (o ine extraction) Passive sampler (diusion cells) Sediment cores ( ask method) Quartz grains from sediment cores
Full measurement process completely automated
As a second development the laboratory creates capabilities to sample, prepare and measure the radioactive noble gas isotopes 85Kr, 39Ar and 81Kr. The following steps are undertaken:
Field extraction of large gas volumes from several cubic meters of water (since 2013) Gas puri cation system for 50 µl of Kr and 500 cc Ar from 60 l gas (2015) Measurement of 85Kr using a miniature gas proportional counter system (target 2016) Cooperation with laboratories to measure 39Ar and 81Kr (Bern, Heidelberg, Argonne, Hefei) Cooperation with University of Adelaide to develop an ATTA system for 85Kr, 39Ar, 81Kr (IPAS) The poster will display the most recent technical developments in the Adelaide CSIRO labora- tory for general discussion.
19 Isotopic study of a deep groundwater system near the Danube-river / South Germany
Heidinger, M.a; Eichinger, L.a, Loosli, H.H. b; Purtschert, R.b; Deiglmayer, W.c a) Hydroisotop GmbH, Schweitenkirchen, Germany b) Climate and Environmental Physics, Division, Phys. Institute Univ. Bern, Switzerland c) Bayerisches Landesamt für Wasserwirtschaft München-Hof, Germany
The groundwater ow regime in the jurassic karst and tertiary terrain near the Danube-river in the area of Ingolstadt / South Germany has been well discussed and investigated for years [1, 2, 3, 4]. However, a stringent explanation of the complex deep groundwater system at the meeting-point of young, karstic groundwater from the north (open karst) and old deep ground- water in the south (covered karst) is still lacking. Today, because of the increasing water use for drinking water supply in the high industrialized area of Ingolstadt, reliable hydrogeological answers and a future sustainable groundwater management system are needed. First symptoms of overexploitation are visible by hydrochemical and isotopic measurements. Coming from the actual state of hydrogeological knowledge, the use of isotope techniques provide distinct expla- nation for the complex genesis of the occurring groundwaters.
References [1] Apel, R., Hydrogeologische Untersuchungen im Malmkarst der Südlichen und Mittleren Frankenalb, Geologica Bavarica, 64 (1971) 268-355. [2] Bertle, B.W., Das Strömungssystem der Grundwässer im Malm-Karst des West-Teils des süddeutschen Molassebeckens, Abh. Geol. L.Amt Baden-Württemberg, 12 (1986), 271. [3] Eichinger, L., Bestimmung des Alters von Grundwässern mit Kohlensto-14: Messung und Interpretation der Grundwässer des Fränkischen Albvorlandes, Thesis (1981) LMU Munich. [4] LOOSLI, H.H. & OESCHGER, H., Use of 39Ar and 14C for groundwater dating, Radiocar- bon, Vol.22-3 (1980) 863-870.
Cross-Border Groundwater Management: The Contribution of Deep Groundwater to Quaternary Basins deduced from Isotope Data
Heidinger, M.a; Lorenz, G.a, Althaus, R.b; Purtschert, R.b; Selg, M.c; Eichinger, L.a a) Hydroisotop GmbH, Schweitenkirchen, Germany b) Climate and Environmental Physics, Division, Phys. Institute Univ. Bern, Switzerland c) Landesamt für Geologie, Rohstoe und Bergbau, Regierungspräsidium Freiburg, Baden-Württemberg, Germany
In the frame of an EU Interreg IIIa project we investigated to what extent the inter-regional Upper Jurassic karst aquifer, which underlies parts of southern Germany and the area around Schahausen in Switzerland, contributes to the water budget of shallow Quaternary basins on both sides of the border. Because the dierentiation between mixing end members based on chemical parameters is ambiguous, isotope tracers were emphasized. Proportion and spatial occurrence of deep karst water were determined based on 3H, 85Kr, 39Ar and 14C. The data were interpreted based on a 3D-hydrogeological setup which was completely re-evaluated using reprocessed seismic pro les. The reviewed scienti c results provide the basis for sustainable groundwater protection and resource management overcoming national borders as the ground- water does.
20 5 Organisational information bla5.1 Location The workshop takes place in the Kirchho-Institute for Physics, Im Neuenheimer Feld (INF) 227, in room 01.403 (See attached map). The welcome reception will take place in the foyer in front of it. 5.2 Registration desk
The TANGR2015 registration desk is located at the DPG Conference O ce on the ground oor of the Physikalisches Institut, Im Neuenheimer Feld 226. If you have not paid the conference fee of 80 euros yet, you can do that at the registration desk in cash in order to receive your TANGR2015 name tag, a printed copy of this booklet, a password for WiFi as well as a public transport ticket. With the TANGR2015 name tag you have access to the DPG-spring meeting on Thursday and Friday. 5.3 Talks
All speakers (except in session 7) have a slot of 30 minutes (20-25 minutes talk + 10-5 minutes discussion). There will be a Windows- and an Apple-Laptop to which the presentations can be transferred either by USB or by sending the talk to [email protected]. Otherwise, speakers are free to use their own device. A presenter will be provided. 5.4 Posters
In order to have an ample poster session and interesting coee breaks we encourage all partici- pants to contribute with a poster. If you send us your poster electronically by monday, March 23, we can print it for you here in Heidelberg. If you bring your poster, you can leave it at the registration desk or give it to us at the welcome reception. 5.5 Public transport
At the registration desk you will receive a ticket for public transport in Heidelberg for Friday, March 27, until Sunday, March 29. 5.6 SRH-guesthouse
The SRH-guesthouse is connected to the public transport system of Heidelberg via Bus Nr.34, Bus Nr.35 from station Bonhoeerstrasse and Tram Nr.5 from station Ochsenkopf (see attached schedules). There are several options to get from the SRH-guesthouse to the Kircho- Institute for Physics where the workshop takes place:
walking, 2.1 km distance along and over the river Neckar (about 25min) taking Bus Nr.34 or Bus Nr.35 to station Gneisenaustrasse next to the pedestrian bridge over the river Neckar and walking the remaining kilometre (about 15min).
21 taking Bus Nr.34 or Bus Nr.35 to station Betriebshof. From there you can take tram Nr.24 to station Bunsengymnasium or Bus Nr.32 to station Uni Campus (about 15min)
Note that bus stop Gneisenaustrasse for direction to SRH guesthouse is not on the opposite side but in the parallel street (see attached map).
5.7 help-line
In case of any problem during the workshop, telephonic assistance is available at
0049 176 65243491
5.8 Internet-Access
Internet Access in the SRH-guesthouse as well as on the campus is provided via eduroam (http://eduroam.uni-hd.de). If you haven't got access to eduroam yet, you can get a login and assistance at the registration desk or from [email protected]. A brief manual on how to con gure eduroam is also provided on the TANGR2015 webpage. Note: If you haven't got access to eduroam yet but need internet access in the SRH-guesthouse before thursday you have to con gure eduroam in advance and require the login from [email protected] or in emergency from the above telephone number.
5.9 Welcome reception
On Thursday, March 26, at 7pm the welcome reception for the TANGR2015 participants will take place in the foyer of room 01.403 (workshop room) at the Kirchhof Institute, Im Neuen- heimer Feld 227 with plenty of drinks and food.
5.10 Friday dinner
For Friday evening we have reserved tables in the famous restaurant and bar Brauhaus Vetter that oers traditional food and self-brewed beer. It is situated next to the station alte Bruecke that has direct connection to the SRH-guesthouse via Bus Nr.34 or Bus Nr.35.
5.11 Conference dinner
The conference dinner will take place on Saturday, March 28, at 7pm in the restaurant Tati, which is located very close to the main train station of Heidelberg. This might be helpful for those participants who plan to leave after the conference dinner.
5.12 Heidelberg city tour
On Sunday, March 29, we oer a visit of the ancient town of Heidelberg. The tour will start at 10.45am at bus stop Marstallstrasse which can be directly reached from the SRH-guesthouse with Bus Nr.35. We will explore the interesting spots of the city with an experienced city- guide (who has background in physics) and will nish the tour at the Heidelberg castle around 1.30pm. Those who are interested can continue the guided tour through the interior of the castle or follow further recommendations that will be provided.
22 23 CAMPUS IM NEUENHEIMER FELD
710 Bundesleistungs- zentrum (BLZ) 720
P HTC P 584 Berliner Straße 31, 32, 37 701 - 703 583 Technologiepark 700 520 585 531 Schwimm- Klausenpfad 582 bad T i Heizwerk e 517- 519 r 581 g a Institut für Sport und 530 r t 580 e Sportwissenschaft Technologiepark n P s t 705 r Hubschrauber- a 515 ß 704 Landeplatz M M e M 569 706 KlausenpfadM 671 669 Im Neuenheimer Feld Im Neuenheimer Max-PIanck- Versorgungs- 562 Pädagogische 660 zentrum Medizin Institut 662 661 Hochschule 31, 32, 37 696 P P 694 680 678 670 VZM ZIM Studenten- P P 695 683 560 wohnheime 677 693 681 679 561 Im Neuenheimer Feld 684 31, 37, 721 P 254 692 675 676 P M 236 21, 24 P 31, 32, 37 235 Geogr. Institut 691 685 687 682 31, 37 674 Im Neuenheimer Feld URZ (Berliner Str. 48) 690 686 31, 32, 37 292 253 P 688 234 P 233 699 M 689 460 252 232 NCT Hörsaal TSG 430 231 Kinderklinik Kopf- 32 klinik Bioquant 230 Mathematikon HIT Haltestelle: T P i e 450 Bunsen- r 400 P 229a g M a gymnasium r t e 308 n 229 21, 24 s M t 267 r a Mönchhofstr. ß 288 e 31, 37 440 Frauen- u. Feld Neuenheimer Im 287 31 Jugendherberge 31 Hautklinik T 21, 24 (DJH) Medizinische 306 Haltestelle: Chirurgische Klinik 227 226 Bunsen- Klinik K 225 gymnasium 227b 420420 410 Mensa Schröderstr. 304 DKFZ H ZMBH Universität/Klinikum 31, 32 Botanischer Garten Univ./Klinikum (im Bau) 165 31, 32 THEORETIKUM Zoo Straße Berliner P Gerhart- Sonstige Einrichtungen 160 162 Hauptm.- 154 31, 32 DKFZ Str. Wohn-/Gewerbegebiete 161 Nieren- 31, 32 Pathologie 155 Grün ächen zentrum 117 UBA P Kirschnerstr. Sportanlagen 163 156 31, 32 P 105 100m Campus 159 118 106 21, 24 Gewässer Reiterverein 136 Besucher-Parkplätze Straßenbahnlinie, Haltestelle Buslinie, Haltestelle Infostand/32, 721Tagungsbüro P 116 Jahnstr. Patienten/Besucher-Parkplatz 119 M P 136 134 132 112 Max-PIanck-Institut 135 129 B BioQuant Hörsäle Chemie (Jahnstr. 29) M Mitarbeiter-Parkplatz ChirurgischeC Klinik Institut für Geowissenschaften Kirchho -Institut für Physik/Physikalisches Institut Parkhaus G K
Mathematisches Institut Physik Hörsäle Uferstr. Krankenhaus M P PH
Pädagogische Hochschule Theoretikum · ZNF 10/14 © Print+Medien Stand Straßenbahnlinie, Haltestelle T Buslinie, Haltestelle Hauptbahnhof Campus Bergheim, Autobahn Campus Altstadt Hubschrauber-Landeplatz N E C K A R Campus-Übersichtstafel 696Schranke 100 m
24 © ZENTRALBEREICH Neuenheimer Feld · Print + Medien · Stand 10/2014 " #
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5 Weinheim, OEG-BahnhofHeidelberg,- Berufsschule Ochsenkopf- Gneisenaustraße- Hauptbahnhof- Stadtwerke Süd- Stadtbücherei- Poststraße- BismarckplatzNeuenheim,- Kußmaulstraße Brückenstraße- BlumenthalstraßeHandschuhsheim,- Hans-Thoma-Platz- Biethsstraße Kapellenweg- BurgstraßeDossenheim,- Bahnhof -Süd Nord Schriesheim,- Bahnhof -Süd ZentgrafenstraßeWeinheim,- OEG-Bahnhof Rosenbrunnen
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Uhr Montag - Freitag Uhr Samstag Uhr Sonn- und Feiertag 4 23 43 4 29 39A 59 4 29 5 03 23 43 53 5 29 59 5 29 6 03 13 23 33 43 53 6 29 59 6 29 7 03 13 23 33 43 53 7 29 59 7 29 59 8 03 13BBB 23 33 43 53 8 29 59 8 29 59 9 03 13BBB 23 33 43 53 9 23 43 53A 9 29 55 10 03 13BBB 23 33 43 53 10 03 13AAA 23 33 43 53 10 25 55 11 03 13BBB 23 33 43 53 11 03 13AAA 23 33 43 53 11 25 55 12 03 13BBB 23 33 43 53 12 03 13AAA 23 33 43 53 12 25 55 13 03 13BBB 23 33 43 53 13 03 13AAA 23 33 43 53 13 25 55 14 03 13BB 23 33 43 53 14 03 13AAA 23 33 43 53 14 25 55 15 03 13 23 33 43 53 15 03 13AAA 23 33 43 53 15 25 55 16 03 13 23 33 43 53 16 03 13AAA 23 33 43 53 16 25 55 17 03 13 23 33 43 53 17 03 13AAA 23 33 43 53 17 25 55 18 03 13 23 33 43 53 18 03 13AA 23 33 53 18 25 55 19 03BB 13 23 53 19 23 53 19 25 55 20 23 53 20 23 53 20 25 55 21 25 55 21 25 55 21 25 55 22 25 55 22 25 55 22 25 55 B B 23 25 55C 23 25 55 23 25 0 25 0 25 0 25 1 29C 1 29 1 29D 2 29C 2 29 2 29D 3 29C 3 29 3 29D
A : bis Heidelberg, Bismarckplatz B : bis Schriesheim, Bahnhof C : nur Nächte Fr/Sa und vor D : nur in den Nächten Wochenfeiertagen, auch Sonn-/Feiertag auf Gründonnerstag/Karfreitag Samstag/Sonn-/Feiertag
Rhein-Neckar-Verkehr GmbH, Möhlstr.27, 68165 Mannheim, www.rnv-online.de, 0621/465-4444, Tel.: 0621/465-4444
30 bla
TANGR2015 is organized in cooperation with the International Atomic Energy Agency (IAEA). We gratefully acknowledge nancial support from the German Research Foundation (DFG), the Department of Physics and Astronomy of Heidelberg University and the Heidelberg Center for the Environment (HCE).
31 bla Short programme
Thursday, March 26 Talks at the DPG spring meeting 9.45 - 10.30 (PV IX) DPG plenary talk Zheng-Tian Lu 11.00 - 16.30 (C/gHS) DPG-Symposium Applied Noble gas physics 17.00 (G/gHS) DPG session UP 10: oceanography 19.00 (01.403 INF 227) TANGR2015 welcome reception
Friday, March 27
9.00 - 9.45 (PV XI) plenary talk John Marshall: The oceans in a warming world 9.45 - 10.30 (PV XII) plenary talk Berge Englert: Quantum measurements 10.45 - 11.00 Welcome (Aeschbach-Hertig, Oberthaler) 11.00 - 12.30 Session 1: ATTA 11.00 - 11.30 Peter Mueller 11.30 - 12.00 Shui-Ming Hu 12.00 - 12.30 Markus Kohler 12.30 - 14.00 Lunch 14.00 - 15.30 Session 2: ATTA continued, LLC 14.00 - 14.30 Florian Ritterbusch / Sven Ebser 14.30 - 15.00 Roland Purtschert 15.00 - 15.30 Craig Aalseth / Jill Brandenberger 15.30 - 16.00 Coee break 16.00 - 17.00 Session 3: Applications in groundwater hydrology 16.00 - 16.30 Takuya Matsumoto 16.30 - 17.00 Martin Kralik 17.00 Poster session / ATTA labtour ∼19.30 Dinner in Brauhaus Vetter in the old town of Heidelberg
Saturday, March 28
8.50 - 9.00 Introduction (Aeschbach-Hertig, Oberthaler) 9.00 - 10.00 Session 4: Applications in oceanography 9.00 - 9.30 Toste Tanhua 9.30 - 10.00 Monika Rhein 10.00 - 10.30 Coee break 10.30 - 12.00 Session 5: Applications in glaciology and paleoclimatology 10.30 - 11.00 Je Severinghaus 11.00 - 11.30 Pascal Bohleber / Helene Homan 11.30 - 12.00 Andrea Fischer 12.00 - 14.00 Lunch at IUP with labtours (extraction / mass spectrometer) 14.00 - 15.30 Session 6: Other applications / Separation methods 14.00 - 14.30 Reika Yokochi 14.30 - 15.00 Gerald Kirchner 15.00 - 15.30 Henning Back 15.30 - 16.00 Coee break 16.00 - 17.30 Session 7: Perspectives for ATTA and noble gas radioisotopes 16.00 - 16.15 Zheng-Tian Lu 16.15 - 16.30 Peter Schlosser 16.30 - 17.30 plenary discussion about strategic development of ATTA 19.00 Conference dinner
Sunday, March 29 Heidelberg city tour. Start: 10.45am at bus stop Marstallstrasse