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Volcanic Fluxes Over the Last Millennium As Recorded in the Gv7 Ice Core (Northern Victoria Land, Antarctica)
geosciences Article Volcanic Fluxes Over the Last Millennium as Recorded in the Gv7 Ice Core (Northern Victoria Land, Antarctica) Raffaello Nardin 1 , Alessandra Amore 1, Silvia Becagli 1, Laura Caiazzo 2, Massimo Frezzotti 3, Mirko Severi 1,* , Barbara Stenni 4 and Rita Traversi 1 1 Department of Chemistry “Ugo Schiff”, University of Florence, 50019 Florence, Italy; raffaello.nardin@unifi.it (R.N.); [email protected] (A.A.); silvia.becagli@unifi.it (S.B.); rita.traversi@unifi.it (R.T.) 2 National Institute of Nuclear Physics (INFN), 50019 Florenc, Italy; laura.caiazzo@unifi.it 3 Department of Sciences, Università degli Studi Roma Tre, 00146 Rome, Italy; [email protected] 4 Department of Environmental Sciences, Informatics and Statistics, Ca’ Foscari University of Venice, 30170 Venezia Mestre, Italy; [email protected] * Correspondence: mirko.severi@unifi.it Received: 15 November 2019; Accepted: 16 January 2020; Published: 20 January 2020 Abstract: Major explosive volcanic eruptions may significantly alter the global atmosphere for about 2–3 years. During that period, volcanic products (mainly H2SO4) with high residence time, stored in the stratosphere or, for shorter times, in the troposphere are gradually deposited onto polar ice caps. Antarctic snow may thus record acidic signals providing a history of past volcanic events. The high resolution sulphate concentration profile along a 197 m long ice core drilled at GV7 (Northern Victoria land) was obtained by Ion Chromatography on around 3500 discrete samples. The relatively high accumulation rate (241 13 mm we yr 1) and the 5-cm sampling resolution allowed a preliminary ± − counted age scale. The obtained stratigraphy covers roughly the last millennium and 24 major volcanic eruptions were identified, dated, and tentatively ascribed to a source volcano. -
A 2700-Year Annual Timescale and Accumulation History for an Ice Core from Roosevelt Island, West Antarctica
A 2700-year annual timescale and accumulation history for an ice core from Roosevelt Island, West Antarctica Winstrup, Mai; Vallelonga, Paul; Kjaer, Helle A.; Fudge, Tyler J.; Lee, James E.; Riis, Marie H.; Edwards, Ross; Bertler, Nancy A. N.; Blunier, Thomas; Brook, Ed J.; Buizert, Christo; Ciobanu, Gabriela; Conway, Howard; Dahl-Jensen, Dorthe; Ellis, Aja; Emanuelsson, B. Daniel; Hindmarsh, Richard C. A.; Keller, Elizabeth D.; Kurbatov, Andrei V.; Mayewski, Paul A.; Neff, Peter D.; Pyne, Rebecca L.; Simonsen, Marius F.; Svensson, Anders; Tuohy, Andrea; Waddington, Edwin D.; Wheatley, Sarah Published in: Climate of the Past DOI: 10.5194/cp-15-751-2019 Publication date: 2019 Document version Publisher's PDF, also known as Version of record Document license: CC BY Citation for published version (APA): Winstrup, M., Vallelonga, P., Kjaer, H. A., Fudge, T. J., Lee, J. E., Riis, M. H., Edwards, R., Bertler, N. A. N., Blunier, T., Brook, E. J., Buizert, C., Ciobanu, G., Conway, H., Dahl-Jensen, D., Ellis, A., Emanuelsson, B. D., Hindmarsh, R. C. A., Keller, E. D., Kurbatov, A. V., ... Wheatley, S. (2019). A 2700-year annual timescale and accumulation history for an ice core from Roosevelt Island, West Antarctica. Climate of the Past, 15(2), 751-779. https://doi.org/10.5194/cp-15-751-2019 Download date: 30. sep.. 2021 Clim. Past, 15, 751–779, 2019 https://doi.org/10.5194/cp-15-751-2019 © Author(s) 2019. This work is distributed under the Creative Commons Attribution 4.0 License. A 2700-year annual timescale and accumulation history for an ice core from Roosevelt Island, West Antarctica Mai Winstrup1,a, Paul Vallelonga1, Helle A. -
November 1960 I Believe That the Major Exports of Antarctica Are Scientific Data
JIET L S. Antarctic Projects OfficerI November 1960 I believe that the major exports of Antarctica are scientific data. Certainly that is true now and I think it will be true for a long time and I think these data may turn out to be of vastly, more value to all mankind than all of the mineral riches of the continent and the life of the seas that surround it. The Polar Regions in Their Relation to Human Affairs, by Laurence M. Gould (Bow- man Memorial Lectures, Series Four), The American Geographiql Society, New York, 1958 page 29.. I ITOJ TJM II IU1viBEt 3 IToveber 1960 CONTENTS 1 The First Month 1 Air Operations 2 Ship Oper&tions 3 Project MAGNET NAF McMurdo Sounds October Weather 4 4 DEEP FREEZE 62 Volunteers Solicited A DAY AT TEE SOUTH POLE STATION, by Paul A Siple 5 in Antarctica 8 International Cooperation 8 Foreign Observer Exchange Program 9 Scientific Exchange Program NavyPrograrn 9 Argentine Navy-U.S. Station Cooperation 9 10 Other Programs 10 Worlds Largest Aircraft in Antarctic Operation 11 ANTARCTICA, by Emil Schulthess The Antarctic Treaty 11 11 USNS PRIVATE FRANIC 3. FETRARCA (TAK-250) 1961 Scientific Leaders 12 NAAF Little Rockford Reopened 13 13 First Flight to Hallett Station 14 Simmer Operations Begin at South Pole First DEEP FREEZE 61 Airdrop 14 15 DEEP FREEZE 61 Cargo Antarctic Real Estate 15 Antarctic Chronology,. 1960-61 16 The 'AuuOiA vises to t):iank Di * ?a]. A, Siple for his artj.ole Wh.4b begins n page 5 Matera1 for other sections of bhis issue was drawn from radio messages and fran information provided bY the DepBr1nozrt of State the Nat0na1 Academy , of Soienoes the NatgnA1 Science Fouxidation the Office 6f NAval Re- search, and the U, 3, Navy Hydziograpbio Offioe, Tiis, issue of tie 3n oovers: i16, aótivitiès o events 11 Novóiber The of the Uxitéd States. -
A 2700-Year Annual Timescale and Accumulation History for 2 an Ice Core from Roosevelt Island, West Antarctica 3 Mai Winstrup1, Paul Vallelonga1, Helle A
Clim. Past Discuss., https://doi.org/10.5194/cp-2017-101 Manuscript under review for journal Clim. Past Discussion started: 28 August 2017 c Author(s) 2017. CC BY 4.0 License. 1 A 2700-year annual timescale and accumulation history for 2 an ice core from Roosevelt Island, West Antarctica 3 Mai Winstrup1, Paul Vallelonga1, Helle A. Kjær1, Tyler J. Fudge2, James E. Lee3, Marie H. 4 Riis1, Ross Edwards4, Nancy A.N. Bertler5,6, Thomas Blunier1, Ed J. Brook3, Christo Buizert3, 5 Gabriela Ciobanu1, Howard Conway2, Dorthe Dahl-Jensen1, Aja Ellis4, B. Daniel 6 Emanuelsson5,6, Elizabeth D. Keller6, Andrei Kurbatov7, Paul Mayewski7, Peter D. Neff8, 7 Rebecca Pyne6, Marius F. Simonsen1, Anders Svensson1, Andrea Tuohy5,6, Ed Waddington2, 8 Sarah Wheatley7 9 1: Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Copenhagen, 10 Denmark 11 2: Earth and Space Sciences, University of Washington, Seattle, WA, USA 12 3: College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, 13 OR, USA 14 4: Physics and Astronomy, Curtin University, Perth, Western Australia, Australia 15 5: Antarctic Research Centre, Victoria University Wellington, Wellington, New Zealand 16 6: GNS Science, Lower Hutt, New Zealand 17 7: Climate Change Institute, University of Maine, Orono, Maine, USA 18 8: Earth and Environmental Sciences, University of Rochester, Rochester, NY, USA 19 Correspondance to: Mai Winstrup ([email protected]) 20 Abstract 21 We present a 2700-year annually resolved timescale for the Roosevelt Island Climate 22 Evolution (RICE) ice core, and reconstruct a snow accumulation history for the coastal sector 23 of the Ross Ice Shelf in West Antarctica. -
A 2700-Year Annual Timescale and Accumulation History for an Ice Core from Roosevelt Island, West Antarctica
Clim. Past, 15, 751–779, 2019 https://doi.org/10.5194/cp-15-751-2019 © Author(s) 2019. This work is distributed under the Creative Commons Attribution 4.0 License. A 2700-year annual timescale and accumulation history for an ice core from Roosevelt Island, West Antarctica Mai Winstrup1,a, Paul Vallelonga1, Helle A. Kjær1, Tyler J. Fudge2, James E. Lee3, Marie H. Riis1, Ross Edwards4,5, Nancy A. N. Bertler6,7, Thomas Blunier1, Ed J. Brook3, Christo Buizert3, Gabriela Ciobanu1, Howard Conway2, Dorthe Dahl-Jensen1, Aja Ellis4, B. Daniel Emanuelsson6,7, Richard C. A. Hindmarsh8, Elizabeth D. Keller7, Andrei V. Kurbatov9, Paul A. Mayewski9, Peter D. Neff10, Rebecca L. Pyne7, Marius F. Simonsen1, Anders Svensson1, Andrea Tuohy6,7, Edwin D. Waddington2, and Sarah Wheatley9 1Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark 2Earth and Space Sciences, University of Washington, Seattle, WA, USA 3College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, USA 4Physics and Astronomy, Curtin University, Perth, Western Australia, Australia 5Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, WI, USA 6Antarctic Research Centre, Victoria University of Wellington, Wellington, New Zealand 7GNS Science, Lower Hutt, New Zealand 8British Antarctic Survey, Cambridge, UK 9Climate Change Institute, University of Maine, Orono, ME, USA 10Earth and Environmental Sciences, University of Rochester, Rochester, NY, USA anow at: Danish Meteorological Institute, Copenhagen, Denmark Correspondence: Mai Winstrup ([email protected]) Received: 11 August 2017 – Discussion started: 28 August 2017 Revised: 15 February 2019 – Accepted: 20 February 2019 – Published: 10 April 2019 Abstract. We present a 2700-year annually resolved tween 700 BCE and 1300 CE, with an average accumula- chronology and snow accumulation history for the Roosevelt tion of 0:25 ± 0:02 m water equivalent (w.e.) per year. -
Dating of an East Antarctic Ice Core (GV7) by High Resolution 2 Chemical Stratigraphies
https://doi.org/10.5194/cp-2021-44 Preprint. Discussion started: 3 May 2021 c Author(s) 2021. CC BY 4.0 License. 1 Dating of an East Antarctic ice core (GV7) by high resolution 2 chemical stratigraphies 3 Raffaello Nardin1, Mirko Severi1,2*, Alessandra Amore1, Silvia Becagli1,2, Francois Burgay3,4, Laura 4 Caiazzo5, Virginia Ciardini6, Giuliano Dreossi2,3, Massimo Frezzotti7, Sang-Bum Hong8, Ishaq Khan3, 5 Bianca Maria Narcisi6, Marco Proposito6, Claudio Scarchilli6, Enricomaria Selmo9, Andrea Spolaor2,3, 6 Barbara Stenni2,3, Rita Traversi1,2 7 1Department of Chemistry “Ugo Schiff”, University of Florence, Florence, 50019, Italy 8 2Institute of Polar Sciences of the National Research Council of Italy (ISP-CNR), 30172, Venice, Italy 9 3Department of Environmental Sciences, Informatics and Statistics of the Ca’ Foscari University of Venice, Venice, 30172, 10 Italy 11 4Laboratory of Environmental Chemistry (LUC), Paul Scherrer Institut, 5232 Villigen PSI, Switzerland 12 5National Institute of Nuclear Physics (INFN), Florence, 50019, Italy 13 6ENEA, Laboratory of Observations and Measures for the environment and climate, 00123 Rome, Italy 14 7Department of Science, Geologic Sciences section, Roma 3 University, 00154 Rome, Italy 15 8Division of Glacial Environmental Research, Korea Polar Research Institute (KOPRI), Incheon 21990, Korea 16 9Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, 43121, Italy 17 18 *Correspondence to: Mirko Severi ([email protected]) 19 Abstract 20 Ice core dating is the first step for a correct interpretation of climatic and environmental changes. In this work, we release a 21 stratigraphic dating of the uppermost 197 m of the 250 m deep GV7(B) ice core (drilling site, 70°41’ S, 158°52’E, 1950 m - 2- 22 a.s.l.) with a sub-annual resolution. -
Implications for the Tectonics of West Antarctica
JOURNALOF GEOPHYSICALRESEARCH, VOL. 96, NO. Bll, PAGES17,935-17,954, OCTOBER 10, 1991 New PaleomagneticData FromThurston Island' Implications for the Tectonicsof West Antarcticaand Weddell Sea Opening A.M. GRUNOW1 ByrdPolar Research Center, Ohio State University, Columbus Lamont-DohertyGeological Observatory andthe Department ofGeological Sciences, Columbia University, New York I. W. D. D ALZlEL Institutefor Geophysics,University of Texasat Austin Palcomagneticdata from threeWest Antarcticcrustal blocks (Antarctic Peninsula (AP), ThurstonIsland-Eights Coast (TI), and the Ellsworth-Whitmore Mountains (EWM) indicate that there has been motion between the individualblocks and motion relative to EastAntarctica during the Mesozoic. A Triassicpalcomagnetic pole from theTI block(116øE, 61øS, A95 = 19.4ø,N = 3 VGPs)appears toindicate that the block has rotated -90 ørelative to EastAntarctica between 230 Ma and110 Ma. Ourpreviously reported Middle Jurassic palcomagnetic pole from the EWM block indicates that a 90 ø rotation relative to East Antarctica occurred sometime between the Cambrian and 175 Ma. We believe that the 90 ø counterclockwise EWM rotation occurred between-220 Ma and 175 Ma related to thedevelopment of post-GondwanideOrogeny shear zones. The motion of theAP, TI, andEWM blocksappears to be linked duringthe mid- to late Mesozoicto threemajor events in the evolutionof the southemocean basins. Openingin theMozambique-Somali-Weddell Sea basins may have produced major counterclockwise rotation of the TI blockwith respectto EastAntarctica between the Jurassic and Early Cretaceousbased on new LateJurassic (145øE,64.5øS, A95 = 7ø,N= 5 VGPs)poles. We believe that the TI rotation,as well as deformation inthe southem AP block, wascaused by collisionand shearingof the EWM blockagainst the othertwo asthe EWM block moved southwardwith East Antarctica. -
Accumulation Rates During 1311–2011 CE in North-Central Greenland Derived from Air-Borne Radar Data
ORIGINAL RESEARCH published: 16 November 2016 doi: 10.3389/feart.2016.00097 Accumulation Rates during 1311–2011 CE in North-Central Greenland Derived from Air-Borne Radar Data Nanna B. Karlsson 1*†, Olaf Eisen 2, 3*, Dorthe Dahl-Jensen 1, Johannes Freitag 2, Sepp Kipfstuhl 2, Cameron Lewis 4, 5, Lisbeth T. Nielsen 1, John D. Paden 4, Anna Winter 2 and Frank Wilhelms 2, 6 1 Centre for Ice and Climate, The Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark, 2 Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany, 3 Department of Geosciences, University of Bremen, Bremen, Germany, 4 Center for Remote Sensing of Ice Sheets, University of Kansas, Lawrence, KS, USA, 5 Sandia National Laboratories, Albuquerque, NM, USA, 6 Department of Crystallography, Geoscience Edited by: Centre, University of Göttingen, Göttingen, Germany Felix Ng, University of Sheffield, UK Radar-detected internal layering contains information on past accumulation rates and Reviewed by: Gordon Stuart Hamilton, patterns. In this study, we assume that the radar layers are isochrones, and use University of Maine, USA the layer stratigraphy in combination with ice-core measurements and numerical Robert Hawley, methods to retrieve accumulation information for the northern part of central Greenland. Dartmouth College, USA Measurements of the dielectric properties of an ice core from the NEEM (North Greenland *Correspondence: Nanna B. Karlsson Eemian Ice Drilling) site, allow for correlation of the radar layers with volcanic horizons to [email protected] obtain an accurate age of the layers. We obtain 100 a averaged accumulation patterns Olaf Eisen [email protected] for the period 1311–2011 for a 300 by 350 km area encompassing the two ice-core sites: †Present Address: NEEM and NGRIP (North Greenland Ice Core Project).