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Review of the Geology and Paleontology of the Ellsworth Mountains, Antarctica
U.S. Geological Survey and The National Academies; USGS OF-2007-1047, Short Research Paper 107; doi:10.3133/of2007-1047.srp107 Review of the geology and paleontology of the Ellsworth Mountains, Antarctica G.F. Webers¹ and J.F. Splettstoesser² ¹Department of Geology, Macalester College, St. Paul, MN 55108, USA ([email protected]) ²P.O. Box 515, Waconia, MN 55387, USA ([email protected]) Abstract The geology of the Ellsworth Mountains has become known in detail only within the past 40-45 years, and the wealth of paleontologic information within the past 25 years. The mountains are an anomaly, structurally speaking, occurring at right angles to the Transantarctic Mountains, implying a crustal plate rotation to reach the present location. Paleontologic affinities with other parts of Gondwanaland are evident, with nearly 150 fossil species ranging in age from Early Cambrian to Permian, with the majority from the Heritage Range. Trilobites and mollusks comprise most of the fauna discovered and identified, including many new genera and species. A Glossopteris flora of Permian age provides a comparison with other Gondwana floras of similar age. The quartzitic rocks that form much of the Sentinel Range have been sculpted by glacial erosion into spectacular alpine topography, resulting in eight of the highest peaks in Antarctica. Citation: Webers, G.F., and J.F. Splettstoesser (2007), Review of the geology and paleontology of the Ellsworth Mountains, Antarctica, in Antarctica: A Keystone in a Changing World – Online Proceedings of the 10th ISAES, edited by A.K. Cooper and C.R. Raymond et al., USGS Open- File Report 2007-1047, Short Research Paper 107, 5 p.; doi:10.3133/of2007-1047.srp107 Introduction The Ellsworth Mountains are located in West Antarctica (Figure 1) with dimensions of approximately 350 km long and 80 km wide. -
Annual Report
annual report 2006-07 Antarctic Climate & Ecosystems COOPERATIVE RESEARCH CENTRE Established and supported under the Australian Government’s Cooperative Research Centre Programme Antarctic Climate & Ecosystems COOPERATIVE RESEARCH CENTRE annual report 2006-07 table of contents executive summary 1 context and major developments during the year 1 national research priorities 3 national research priority goals 3 table 1: national research priorities and CRC research 3 governance & management 4 table 2: speciied personnel 5 research programs 8 climate variability & change 9 ocean control of carbon dioxide 12 antarctic marine ecosystems 15 sea-level rise 17 policy 20 table 3: research outputs and milestones 23 research collaboration 31 commercialisation & utilisation 36 commercialisation & utilisation strategies and activities 36 intellectual property management 37 table 4: commercialisation milestones 37 communication strategy 38 end-user involvement and CRC impact on end-users 39 education & training 42 table 6: education & training outputs and/or milestones 43 third year review 44 performance measures 45 table 7: progress on performance measures 45 glossary of terms 49 executive summary The Antarctic Climate & Ecosystems Cooperative past climate captured in the Antarctic ice sheet. We Research Centre (ACE CRC) was funded to lead Australian have strengthened the previous evidence of signals research on the roles of Antarctica and the Southern in ice cores of winter sea ice cover around eastern Ocean in the global climate system and climate change. Antarctica, allowing hind-casting of sea ice dynamics We also have a brief to investigate likely impacts of that will enable us to properly interpret recent events climate change on Southern Ocean marine ecosystems possibly related to climate change. -
James Clark Ross
BAS Ref.: JR104 Copy No: CRUISE REPORT JR 104 JAMES CLARK ROSS JAMES CLARK ROSS STANLEY F I RRS JAMES CLARK ROSS Marine geology and geophysics Bellingshausen Sea January – February 2004 BAS Ref.: JR104 Copy No: CRUISE REPORT RRS James Clark Ross Cruise JR104 January to February 2004 Multibeam echo sounding, TOPAS sub-bottom profiling and sediment coring Continental shelf and slope in the Bellingshausen Sea R.D. Larter with contributions from A. Tait, C.J. Pudsey, M.O. Preston, C. Ó Cofaigh, P. Morris, C.-D. Hillenbrand, J. Evans, J.A. Dowdeswell and S.F. Bremner Distribution: 1. Headquarters - Archives 2. Headquarters - Geological Sciences Division (for circulation) 3. RRS James Clark Ross (for circulation) 4. Dr R D Larter 5. Dr C J Pudsey 6. JR50 participants (for circulation) 7. Directorate (for circulation) 8. BAS Technical Services (for circulation) 9. Prof. J A Dowdeswell (Scott Polar Research Institute) This unpublished report contains initial observations and conclusions. It is not to be cited without written permission of the Director, British Antarctic Survey. Frontispiece: ice conditions in the Bellingshausen Sea, (a) as seen from space (top, MODIS satellite image, 1400 on 28th January 2004) showing open water in the Ronne Entrance and Eltanin Bay, and (b) from the ship (~0400 on 31st January at core station BC356, NW of Smyley Island; photo courtesy of Emma Wilson). Back cover: four scientists, a doc and a core. Carol, Emma, Claus-Dieter, Jeff and Colm with freshly recovered sections of core GC380 (photo courtesy of Steve Bremner). -
Rezensionen Für
Rezensionen für Gustav Mahler: Das Lied von der Erde aud 95.491 4022143954916 Badische Zeitung 18.11.2003 (Heinz W. Koch - 2003.11.18) ... Wie spezifisch, ja wie radikal sich Gielens Mahler ausnimmt, erhellt schlagartig, wenn man Rafael Kubeliks dreieinhalb Jahrzehnte alte und vor einer Weile wiederveröffentlichte Einspielung dagegenhält. Eine gehörige Überraschung gab’s schon einmal – als nämlich die nie veröffentlichten Münchner Funk-„Meistersinger“ von 1967 plötzlich zu haben waren. Jetzt ist es Gustav Mahlers drei Jahre später eingespieltes „Lied von der Erde“, das erstmals über die Ladentische geht. Es gehört zu einer Mahler Gesamtaufnahme, die offenbar vor der rühmlich bekannten bei der Deutschen Grammophon entstand. Zumindest bei den hier behandelten Sinfonien Nr. 3 und Nr. 6 war das der Fall. Beim „Lied von der Erde“ offeriert das Symphonie-Orchester des Bayerischen Rundfunks, dessen Chef Kubelik damals war, ein erstaunlich präsentes, erstaunlich aufgesplittertes Klangbild, das sowohl das Idyllisch-Graziöse hervorkehrt wie das Schwerblütig-Ausdrucksgesättigte mit großem liedsinfonischem Atem erfüllt – eine erstrangige Wiedergabe. Auch die beiden 1967/68 erarbeiteten Sinfonien erweisen sich als bestechend durchhörbar. Vielleicht geht Kubelik eine Spur naiver vor als die beim Sezieren der Partitur schärfer verfahrenden Dirigenten wie Gielen, bricht sich, wo es geht, das ererbte böhmische Musikantentum zumindest für Momente Bahn. Da staunt einer eher vor Mahler, als dass er ihn zu zerlegen sucht. Wenn es eine Verwandtschaft gibt, dann ist es die zu Bernstein. Das Triumphale der „Dritten“, das Nostalgische an ihr wird nicht als Artefakt betrachtet, sondern „wie es ist“: Emotion zur Analyse. ... (aus einer Besprechung mit den Mahler-Interpretationen Michael Gielens) CD Compact n°169 (octobre 2003) (Benjamín Fontvelia - 2003.10.01) Rafael Kubelik/Audite Rafael Kubelik/Audite Full review text restrained for copyright reasons. -
PDF-TITEL-AA-CHILE-EMPEORSADVENTURE Kopie.Pages
Antarktis Flug-Expeditionen EMPEROR PENGUINS Besuch der Kaiserpinguin-Kolonie in der Gould-Bucht ex Punta Arenas / Chile via Basecamp Union Glaciar POLARADVENTURES Schiffs- und Flug-Expeditionen in Arktis und Antarktis Reiseagentur Heinrich-Böll-Str. 40 * D-21335 Lüneburg * Deutschland Tel +49-4131- 223474 Fax +49-4131-54255 [email protected] www.polaradventures.de Saison 2021/22 Veranstalter Direkt-Angebote ab-bis Punta Arenas (Chile) für individuelle Planungen alle Abfahrten der Saison inkl. englischsprachiger Termine POLARADVENTURES Schiffs- und Flug-Expeditionen in Arktis und Antarktis Reiseagentur * Heinrich-Böll-Str. 40 * D-21335 Lüneburg * Deutschland Tel +49-4131- 223474 Fax +49-4131-54255 [email protected] www.polaradventures.de EMPEROR PENGUINS A PHOTOGRAPHER’S PARADISE Immerse yourself in the sights and sounds of the Gould Bay Emperor Penguin Colony on the remote coast of the Weddell Sea. Camp on the same sea ice where thousands of birds come to raise and feed their young. Photograph majestic emperors and their chicks against a spectacular backdrop of ice cliffs, pressure ridges, and icebergs. Spot petrels and seals amongst the endless white expanse. Fall asleep to a chorus of trumpeting calls and wake to find curious penguins outside your tent. Our remote field camp offers you unparalleled access to the emperors as you witness their amazing adaptations to the Antarctic environment alongside our expert guides. ITINERARY Arrival Day Punta Arenas, Chile Pre-departure Day Luggage Pick-Up & Briefing Day 1 Fly to Antarctica Day 2 Explore Union Glacier Day 3 Fly to Emperor Colony Day 4-6 Live with the Emperors Day 7 Return to Union Glacier Day 8 Explore Union Glacier Day 9 Return to Chile Flexible Departure Day Fly Home *Subject to change based on weather and flight conditions. -
The Geological Society Books
The Geological Society Books Chapter 4.1a Antarctic Peninsula I. Volcanology --Manuscript Draft-- Manuscript Number: GSLBooks18-059 Full Title: Chapter 4.1a Antarctic Peninsula I. Volcanology Article Type: Chapter Corresponding Author: John Laidlaw Smellie University of Leicester Leicester, Leicestershire UNITED KINGDOM Other Authors: Malcolm Hole Section/Category: Volcanism in Antarctica: 200 Million Years of Subduction, Rifting and Continental Break-Up Abstract: The Antarctic Peninsula is distinguished by late Neogene volcanic activity related to a series of northerly-younging ridge crest—trench collisions and the progressive opening of ‘no-slab windows’ in the subjacent mantle. The outcrops were amongst the last to be discovered in the region, with many occurrences not visited until the 1970’s and 1980’s. The volcanism consists of several monogenetic volcanic fields and small isolated centres. It is sodic alkaline to tholeiitic in composition and ranges in age between 7.7 Ma and present. No eruptions have been observed (with the possible, but dubious, exception of Seal Nunataks in 1893), but very young isotopic ages for some outcrops suggest that future eruptions are a possibility. The eruptions were overwhelmingly glaciovolcanic and the outcrops have been a major source of information on glaciovolcano construction. They have also been highly instrumental in advancing our understanding of the configuration of the Plio-Pleistocene Antarctic Peninsula Ice Sheet. However, our knowledge is hindered by a paucity of modern, precise isotopic ages. In particular, there is no obvious relationship between the age of ridge crest—trench collisions and the timing of slab-window volcanism, a puzzle that may only be resolved by new dating. -
Glacio-Lacustrine Aragonite Deposition, Meltwater Evolution And
Antarctic Science 19 (3), 365–372 (2007) & Antarctic Science Ltd 2007 Printed in the UK DOI: 10.1017/S0954102007000466 Glacio-lacustrine aragonite deposition, meltwater evolution and glacial history during isotope stage 3 at Radok Lake, Amery Oasis, northern Prince Charles Mountains, East Antarctica IAN D. GOODWIN1 and JOHN HELLSTROM2 1Environmental and Climate Change Research Group, School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW 2308, Australia 2School of Earth Sciences, University of Melbourne, Parkville, VIC 3010, Australia [email protected] Abstract: The late Quaternary glacial history of the Amery Oasis, and Prince Charles Mountains is of significant interest because about 10% of the total modern Antarctic ice outflow is discharged via the adjacent Lambert Glacier system. A glacial thrust moraine sequence deposited along the northern shoreline of Radok Lake between 20–10 ka BP, overlies a layer of thin, aragonite crusts which provide important constraints on the glacial history of the Amery Oasis. The modern Radok Lake is fed by the terminal meltwaters of the alpine Battye Glacier. The aragonite crusts were deposited in shallow water of ancestral Radok Lake 53 ka BP,during the A3 warm event in Isotope Stage 3. Oxygen isotope (d18O) analysis of the last glacial-age aragonite crusts 18 indicates that they precipitated from freshwater with a d OSMOW composition of -36%, which is 8% more depleted than the present water (-28%) in Radok Lake. A regional oxygen isotope (d18O) and elevation relationship for snow is used to determine the source of meltwater and glacial ice in Radok Lake during the A3 warm event. -
Comparison of Geodetic and Glaciological Mass Budgets for White Glacier, Axel Heiberg Island, Canada
Journal of Glaciology (2016), Page 1 of 12 doi: 10.1017/jog.2016.112 © The Author(s) 2016. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons. org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited. Comparison of geodetic and glaciological mass budgets for White Glacier, Axel Heiberg Island, Canada LAURA I. THOMSON,1 MICHAEL ZEMP,2 LUKE COPLAND,1 J. GRAHAM COGLEY,3 MILES A. ECCLESTONE3 1Department of Geography, Environment and Geomatics, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada 2Department of Geography, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, CH, Switzerland 3Department of Geography, Trent University, Peterborough, Ontario, K9J 7B8, Canada Correspondence: Laura I. Thomson <[email protected]> ABSTRACT. This study presents the first reanalysis of a long-term glacier mass-balance record in the Canadian Arctic. The reanalysis is accomplished through comparison of the 1960–2014 glaciological mass-balance record of White Glacier, Axel Heiberg Island, Nunavut, with a geodetically derived mass change over the same period. The corrections applied to homogenize the two datasets, including adjusting for changes in hypsometry over the period of record and the generic differences between methods, are discussed along with the associated systematic and random errors of the two forms of mass-balance measurement. Statistical comparison of the two datasets reveals that within the error margin there is no significant difference between the average annual glaciological balance (–213 ± 28 − − mm w.e. a 1) and geodetic balance (–178 ± 16 mm w.e. -
Flow of the Amery Ice Shelf and Its Tributary Glaciers
18th Australasian Fluid Mechanics Conference Launceston, Australia 3-7 December 2012 Flow of the Amery Ice Shelf and its Tributary Glaciers M. L. Pittard1 2 , J. L. Roberts3 2, R. C. Warner3 2, B.K Galton-Fenzi2, C.S. Watson4 and R. Coleman1 1Institute for Marine and Antarctic Studies University of Tasmania, Private Bag 129, Hobart, Tasmania 7001, Australia 2Antarctic Climate & Ecosystems Cooperative Research Centre University of Tasmania, Private Bag 80, Hobart, Tasmania 7001, Australia 3Department of Sustainability, Environment, Water, Population and Communities, Australian Antarctic Division Hobart, Tasmania, Australia 4 School of Geography and Environmental Studies University of Tasmania, Private Bag 76, Hobart, Tasmania 7001, Australia Abstract thickness across the grounding zone to provide information on ice discharge. Strain rates and vorticity can be used to investi- The Amery Ice Shelf (AIS) is a major ice shelf that drains ap- gate the dynamics of the flow. The longitudinal strain rate gives proximately 16% of the East Antarctic Ice Sheet [1]. Here we insight into the way the velocity changes along the flow and use a sequence of visible spectrum Landsat7 satellite images may reflect influences of features beneath the ice. The shear to track persistent surface features over the southern portion of component of the strain rate highlights the localisation of shear the AIS and its three major tributary glaciers. A spatially in- stresses at the margin of the flow. Vorticity displays a combina- complete velocity field is calculated by comparing the distances tion of rotation in flow direction and strong shear deformations. features have moved between image pairs. Key features of the flow field including the vorticity and strain rate distributions are The AIS is one of the largest ice shelves bordering the East discussed. -
Post-Subduction Alkaline Volcanism Along the Antarctic Peninsula
Journal of rhe Geological Society, London, Vol. 145, 1988, pp. 985-998, 14 figs, 2 tables. Printed in Northern Ireland Post-subduction alkaline volcanism along the Antarctic Peninsula M. J. HOLE British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge CB3 OET, UK Abstract: Following the cessation of subduction along the Antarctic Peninsula, there was a change in the character of the magmatism from calc-alkaline to alkaline. A Miocene-Pliocene suite of basanites, tephrites and alkali and olivine basalts from Alexander Island, south-west Antarctic Peninsula, was erupted between 18 and 30 Ma after the cessation of subduction. These basalts exhibit incompatible trace element characteristics similar to those reported for continental alkali basalts and OIB. Major and trace element variations are consistent with an origin by low butvariable degrees of partial melting of agarnet lherzolite source withresidual garnet f clinopyroxene, followed by limited fractional crystallization of olivine and clinopyroxene. Sr- and Nd-isotope compositions cover alimited range of 87Sr/ssSr 0.70275-0.70343 and 143Nd/144Nd0.51298-0.51286. These ratios are consistentwith the derivation of the basalts from a depleted source region broadly.similar to that of MORB and non-Dupal OIB. Correlated LILE/HFSE-isotope trends demonstrate that the olivine basalts are enriched in the LILEand 87Sr butdepleted in 143Nd relativeto other Alexander Island samples.The LILE- enrichment is attributed to the inheritance of a subduction component from mantle material which previously constituted the mantle wedge during Mesozoic subduction along the Antarctic Peninsula. The traceelement and isotopiccharacteristics of subduction- alkali basalts were generated and to establish the related magmatic rocks havebeen the subject of much relationship between ridge crest-trench collisions and attention in- the literature. -
Glaciomarine Sedimentation at the Continental Margin of Prydz Bay, East Antarctica: Implications on Palaeoenvironmental Changes During the Quaternary
Alfred-Wegener-Institut für Polar- und Meeresforschung Universität Potsdam, Institut für Erd- und Umweltwissenschaften Glaciomarine sedimentation at the continental margin of Prydz Bay, East Antarctica: implications on palaeoenvironmental changes during the Quaternary Dissertation zur Erlangung des akademischen Grades Doktor der Naturwissenschaften (Dr. rer. nat.) in der Wissenschaftsdisziplin “Geowissenschaften” eingereicht an der Mathematisch-Naturwissenschaftlichen Fakultät der Universität Potsdam von Andreas Borchers Potsdam, 30. November 2010 Das Höchste, wozu der Mensch gelangen kann, ist das Erstaunen. J. W. von Goethe Acknowledgements This dissertation would not have been possible without the support and help of numerous people to whom I would like to express my gratitude. First, I am highly indebted to PD Dr. Bernhard Diekmann for the possibility to conduct this work under his supervision and for his constant support, whenever discussion or advice was needed. I appreciated his vast expertise and knowledge of marine geology, sedimentology and Quaternary Science that he so enthusiastically shared with me, adding considerably to my experience. Besides being a full-hearted geologist, he is also a great guitarist, which I enjoyed during the past years, especially during the expeditions I had the chance to participate. I would also like to thank Prof. Dr. Hans-Wolfgang Hubberten for his general support and understanding, giving me the opportunity to broaden my knowledge of marine geology in the field. Using the infrastructure of the institute in Potsdam, Bremerhaven and on the world’s oceans has made a major contribution realizing this work. I am deeply grateful to Prof. Dr. Ulrike Herzschuh and Dr. Gerhard Kuhn who provided a large part of assistance by discussions, constructive advices and moral support. -
A Strategy for Monitoring Glaciers
COVER PHOTOGRAPH: Glaciers near Mount Shuksan and Nooksack Cirque, Washington. Photograph 86R1-054, taken on September 5, 1986, by the U.S. Geological Survey. A Strategy for Monitoring Glaciers By Andrew G. Fountain, Robert M. Krimme I, and Dennis C. Trabant U.S. GEOLOGICAL SURVEY CIRCULAR 1132 U.S. DEPARTMENT OF THE INTERIOR BRUCE BABBITT, Secretary U.S. GEOLOGICAL SURVEY Gordon P. Eaton, Director The use of firm, trade, and brand names in this report is for identification purposes only and does not constitute endorsement by the U.S. Government U.S. GOVERNMENT PRINTING OFFICE : 1997 Free on application to the U.S. Geological Survey Branch of Information Services Box 25286 Denver, CO 80225-0286 Library of Congress Cataloging-in-Publications Data Fountain, Andrew G. A strategy for monitoring glaciers / by Andrew G. Fountain, Robert M. Krimmel, and Dennis C. Trabant. P. cm. -- (U.S. Geological Survey circular ; 1132) Includes bibliographical references (p. - ). Supt. of Docs. no.: I 19.4/2: 1132 1. Glaciers--United States. I. Krimmel, Robert M. II. Trabant, Dennis. III. Title. IV. Series. GB2415.F68 1997 551.31’2 --dc21 96-51837 CIP ISBN 0-607-86638-l CONTENTS Abstract . ...*..... 1 Introduction . ...* . 1 Goals ...................................................................................................................................................................................... 3 Previous Efforts of the U.S. Geological Survey ...................................................................................................................