United States Antarctic Activities 2003-2004
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University Microfilms, Inc., Ann Arbor, Michigan GEOLOGY of the SCOTT GLACIER and WISCONSIN RANGE AREAS, CENTRAL TRANSANTARCTIC MOUNTAINS, ANTARCTICA
This dissertation has been /»OOAOO m icrofilm ed exactly as received MINSHEW, Jr., Velon Haywood, 1939- GEOLOGY OF THE SCOTT GLACIER AND WISCONSIN RANGE AREAS, CENTRAL TRANSANTARCTIC MOUNTAINS, ANTARCTICA. The Ohio State University, Ph.D., 1967 Geology University Microfilms, Inc., Ann Arbor, Michigan GEOLOGY OF THE SCOTT GLACIER AND WISCONSIN RANGE AREAS, CENTRAL TRANSANTARCTIC MOUNTAINS, ANTARCTICA DISSERTATION Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio State University by Velon Haywood Minshew, Jr. B.S., M.S, The Ohio State University 1967 Approved by -Adviser Department of Geology ACKNOWLEDGMENTS This report covers two field seasons in the central Trans- antarctic Mountains, During this time, the Mt, Weaver field party consisted of: George Doumani, leader and paleontologist; Larry Lackey, field assistant; Courtney Skinner, field assistant. The Wisconsin Range party was composed of: Gunter Faure, leader and geochronologist; John Mercer, glacial geologist; John Murtaugh, igneous petrclogist; James Teller, field assistant; Courtney Skinner, field assistant; Harry Gair, visiting strati- grapher. The author served as a stratigrapher with both expedi tions . Various members of the staff of the Department of Geology, The Ohio State University, as well as some specialists from the outside were consulted in the laboratory studies for the pre paration of this report. Dr. George E. Moore supervised the petrographic work and critically reviewed the manuscript. Dr. J. M. Schopf examined the coal and plant fossils, and provided information concerning their age and environmental significance. Drs. Richard P. Goldthwait and Colin B. B. Bull spent time with the author discussing the late Paleozoic glacial deposits, and reviewed portions of the manuscript. -
Concentrations, Particle-Size Distributions, and Dry Deposition fluxes of Aerosol Trace Elements Over the Antarctic Peninsula in Austral Summer
Atmos. Chem. Phys., 21, 2105–2124, 2021 https://doi.org/10.5194/acp-21-2105-2021 © Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License. Concentrations, particle-size distributions, and dry deposition fluxes of aerosol trace elements over the Antarctic Peninsula in austral summer Songyun Fan1, Yuan Gao1, Robert M. Sherrell2, Shun Yu1, and Kaixuan Bu2 1Department of Earth and Environmental Sciences, Rutgers University, Newark, NJ 07102, USA 2Department of Marine and Coastal Sciences, Rutgers University, New Brunswick, NJ 08901, USA Correspondence: Yuan Gao ([email protected]) Received: 1 July 2020 – Discussion started: 26 August 2020 Revised: 3 December 2020 – Accepted: 8 December 2020 – Published: 12 February 2021 Abstract. Size-segregated particulate air samples were col- sition processes may play a minor role in determining trace lected during the austral summer of 2016–2017 at Palmer element concentrations in surface seawater over the conti- Station on Anvers Island, western Antarctic Peninsula, to nental shelf of the western Antarctic Peninsula. characterize trace elements in aerosols. Trace elements in aerosol samples – including Al, P, Ca, Ti, V, Mn, Ni, Cu, Zn, Ce, and Pb – were determined by total digestion and a 1 Introduction sector field inductively coupled plasma mass spectrometer (SF-ICP-MS). The crustal enrichment factors (EFcrust) and Aerosols affect the climate through direct and indirect ra- k-means clustering results of particle-size distributions show diative forcing (Kaufman et al., 2002). The extent of such that these elements are derived primarily from three sources: forcing depends on both physical and chemical properties (1) regional crustal emissions, including possible resuspen- of aerosols, including particle size and chemical composi- sion of soils containing biogenic P, (2) long-range transport, tion (Pilinis et al., 1995). -
South Georgia and Antarctic Odyssey
South Georgia and Antarctic Odyssey 30 November – 18 December 2019 | Greg Mortimer About Us Aurora Expeditions embodies the spirit of adventure, travelling to some of the most wild opportunity for adventure and discovery. Our highly experienced expedition team of and remote places on our planet. With over 28 years’ experience, our small group voyages naturalists, historians and destination specialists are passionate and knowledgeable – they allow for a truly intimate experience with nature. are the secret to a fulfilling and successful voyage. Our expeditions push the boundaries with flexible and innovative itineraries, exciting Whilst we are dedicated to providing a ‘trip of a lifetime’, we are also deeply committed to wildlife experiences and fascinating lectures. You’ll share your adventure with a group education and preservation of the environment. Our aim is to travel respectfully, creating of like-minded souls in a relaxed, casual atmosphere while making the most of every lifelong ambassadors for the protection of our destinations. DAY 1 | Saturday 30 November 2019 Ushuaia, Beagle Channel Position: 20:00 hours Course: 83° Wind Speed: 20 knots Barometer: 991 hPa & steady Latitude: 54°49’ S Wind Direction: W Air Temp: 6° C Longitude: 68°18’ W Sea Temp: 5° C Explore. Dream. Discover. —Mark Twain in the soft afternoon light. The wildlife bonanza was off to a good start with a plethora of seabirds circling the ship as we departed. Finally we are here on the Beagle Channel aboard our sparkling new ice-strengthened vessel. This afternoon in the wharf in Ushuaia we were treated to a true polar welcome, with On our port side stretched the beech forested slopes of Argentina, while Chile, its mountain an invigorating breeze sweeping the cobwebs of travel away. -
Office of Polar Programs
DEVELOPMENT AND IMPLEMENTATION OF SURFACE TRAVERSE CAPABILITIES IN ANTARCTICA COMPREHENSIVE ENVIRONMENTAL EVALUATION DRAFT (15 January 2004) FINAL (30 August 2004) National Science Foundation 4201 Wilson Boulevard Arlington, Virginia 22230 DEVELOPMENT AND IMPLEMENTATION OF SURFACE TRAVERSE CAPABILITIES IN ANTARCTICA FINAL COMPREHENSIVE ENVIRONMENTAL EVALUATION TABLE OF CONTENTS 1.0 INTRODUCTION....................................................................................................................1-1 1.1 Purpose.......................................................................................................................................1-1 1.2 Comprehensive Environmental Evaluation (CEE) Process .......................................................1-1 1.3 Document Organization .............................................................................................................1-2 2.0 BACKGROUND OF SURFACE TRAVERSES IN ANTARCTICA..................................2-1 2.1 Introduction ................................................................................................................................2-1 2.2 Re-supply Traverses...................................................................................................................2-1 2.3 Scientific Traverses and Surface-Based Surveys .......................................................................2-5 3.0 ALTERNATIVES ....................................................................................................................3-1 -
Amazing Antarctica – Lesson 6
Year 8 GEOGRAPHY – Ecosystems – Amazing Antarctica – Lesson 6 Title: Ecosystems – Amazing Antarctica TASK 1: write down the following WOW words. As you go through the information, write the definition for each word (you might find some of the definitions as you work through the booklet). • Precipitation = • Albedo = • Ice sheet = • Glaciers = • Food chain = TASK 2: where is Antarctica? Use the following sentence starters and complete them to explain where Antarctica is located around the world. • Antarctica is located at the _________________ pole. • Antarctica is a country/continent/city. • Nearby countries include ______________________. • The oceans that surround Antarctica are __________________________. TASK 3: watch the video and write down facts about Antarctica https://www.youtube.com/watch?v=X3uT89xoKuc Antarctica TASK 4: what is the climate like in Antarctica? Read through the information below and answer the questions in red. Climate of Antarctica Antarctica can be called a desert because of its low levels of precipitation, which is mainly snow. In coastal regions, about 200 mm can fall annually. In mountainous regions and on the East Antarctica plateau, the amount is less than 50 mm annually. Evaporation is not as high as other desert regions because it is so cold, so the snow gradually builds up year after year. There are also strong winds, with recordings of up to 200 mph being made. Antarctica's seasons are opposite to the seasons that we're familiar with in the UK. Antarctic summers happen at the same time as UK winters. This is because Antarctica is in the Southern Hemisphere, which faces the Sun during our winter time. -
Educator's Guide
SOUTH POLE Amundsen’s Route Scott’s Route Roald Amundsen EDUCATOR’S GUIDE amnh.org/education/race Robert Falcon Scott INSIDE: • Suggestions to Help You Come Prepared • Essential Questions for Student Inquiry • Strategies for Teaching in the Exhibition • Map of the Exhibition • Online Resources for the Classroom • Correlation to Standards • Glossary ESSENTIAL QUESTIONS Who would be fi rst to set foot at the South Pole, Norwegian explorer Roald Amundsen or British Naval offi cer Robert Falcon Scott? Tracing their heroic journeys, this exhibition portrays the harsh environment and scientifi c importance of the last continent to be explored. Use the Essential Questions below to connect the exhibition’s themes to your curriculum. What do explorers need to survive during What is Antarctica? Antarctica is Earth’s southernmost continent. About the size of the polar expeditions? United States and Mexico combined, it’s almost entirely covered Exploring Antarc- by a thick ice sheet that gives it the highest average elevation of tica involved great any continent. This ice sheet contains 90% of the world’s land ice, danger and un- which represents 70% of its fresh water. Antarctica is the coldest imaginable physical place on Earth, and an encircling polar ocean current keeps it hardship. Hazards that way. Winds blowing out of the continent’s core can reach included snow over 320 kilometers per hour (200 mph), making it the windiest. blindness, malnu- Since most of Antarctica receives no precipitation at all, it’s also trition, frostbite, the driest place on Earth. Its landforms include high plateaus and crevasses, and active volcanoes. -
A NEWS BULLETIN Published Quarterly by the NEW ZEALAND ANTARCTIC SOCIETY (INC)
A NEWS BULLETIN published quarterly by the NEW ZEALAND ANTARCTIC SOCIETY (INC) An English-born Post Office technician, Robin Hodgson, wearing a borrowed kilt, plays his pipes to huskies on the sea ice below Scott Base. So far he has had a cool response to his music from his New Zealand colleagues, and a noisy reception f r o m a l l 2 0 h u s k i e s . , „ _ . Antarctic Division photo Registered at Post Ollice Headquarters. Wellington. New Zealand, as a magazine. II '1.7 ^ I -!^I*"JTr -.*><\\>! »7^7 mm SOUTH GEORGIA, SOUTH SANDWICH Is- . C I R C L E / SOUTH ORKNEY Is x \ /o Orcadas arg Sanae s a Noydiazarevskaya ussr FALKLAND Is /6Signyl.uK , .60"W / SOUTH AMERICA tf Borga / S A A - S O U T H « A WEDDELL SHETLAND^fU / I s / Halley Bav3 MINING MAU0 LAN0 ENOERBY J /SEA uk'/COATS Ld / LAND T> ANTARCTIC ••?l\W Dr^hnaya^^General Belgrano arg / V ^ M a w s o n \ MAC ROBERTSON LAND\ '■ aust \ /PENINSULA' *\4- (see map betowi jrV^ Sobldl ARG 90-w {■ — Siple USA j. Amundsen-Scott / queen MARY LAND {Mirny ELLSWORTH" LAND 1, 1 1 °Vostok ussr MARIE BYRD L LAND WILKES LAND ouiiiv_. , ROSS|NZJ Y/lnda^Z / SEA I#V/VICTORIA .TERRE , **•»./ LAND \ /"AOELIE-V Leningradskaya .V USSR,-'' \ --- — -"'BALLENYIj ANTARCTIC PENINSULA 1 Tenitnte Matianzo arg 2 Esptrarua arg 3 Almirarrta Brown arc 4PttrtlAHG 5 Otcipcion arg 6 Vtcecomodoro Marambio arg * ANTARCTICA 7 Arturo Prat chile 8 Bernardo O'Higgins chile 1000 Miles 9 Prasid«fTtB Frei chile s 1000 Kilometres 10 Stonington I. -
Reevaluation of the Timing and Extent of Late Paleozoic Glaciation in Gondwana: Role of the Transantarctic Mountains
Reevaluation of the timing and extent of late Paleozoic glaciation in Gondwana: Role of the Transantarctic Mountains John L. Isbell Department of Geosciences, University of Wisconsin, Milwaukee, Wisconsin 53201, USA Paul A. Lenaker Rosemary A. Askin Byrd Polar Research Center, Ohio State University, Columbus, Ohio 43210, USA Molly F. Miller Department of Earth and Environmental Science, Vanderbilt University, Nashville, Tennessee 37235, USA Loren E. Babcock Department of Geological Sciences and Byrd Polar Research Center, Ohio State University, Columbus, Ohio 43210, USA ABSTRACT Evidence from Antarctica indicates that a 2000-km-long section of the Transantarctic MountainsÐincluding Victoria Land, the Darwin Glacier region, and the central Transantarctic MountainsÐwas not located near the center of an enormous Car- boniferous to Early Permian ice sheet, as depicted in many paleo- Figure 1. Carboniferous and geographic reconstructions. Weathering pro®les and soft-sediment Permian paleogeographic map deformation immediately below the preglacial (pre-Permian) un- of Gondwana (after Powell and Li, 1994), showing several hy- conformity suggest an absence of ice cover during the Carbonif- pothetical ice sheets. erous; otherwise, multiple glacial cycles would have destroyed these features. The occurrence of glaciotectonite, massive and strat- i®ed diamictite, thrust sheets, sandstones containing dewatering structures, and lonestone-bearing shales in southern Victoria Land and the Darwin Glacier region indicate that Permian sedimenta- tion occurred in ice-marginal, periglacial, and/or glaciomarine set- tings. No evidence was found that indicates the Transantarctic Mountains were near a glacial spreading center during the late Paleozoic. Although these ®ndings do not negate Carboniferous Powell, 1987; Ziegler et al., 1997; Scotese, 1997; Scotese et al., 1999; glaciation in Antarctica, they do indicate that Gondwanan glacia- Veevers, 2000, 2001). -
Species Status Assessment Emperor Penguin (Aptenodytes Fosteri)
SPECIES STATUS ASSESSMENT EMPEROR PENGUIN (APTENODYTES FOSTERI) Emperor penguin chicks being socialized by male parents at Auster Rookery, 2008. Photo Credit: Gary Miller, Australian Antarctic Program. Version 1.0 December 2020 U.S. Fish and Wildlife Service, Ecological Services Program Branch of Delisting and Foreign Species Falls Church, Virginia Acknowledgements: EXECUTIVE SUMMARY Penguins are flightless birds that are highly adapted for the marine environment. The emperor penguin (Aptenodytes forsteri) is the tallest and heaviest of all living penguin species. Emperors are near the top of the Southern Ocean’s food chain and primarily consume Antarctic silverfish, Antarctic krill, and squid. They are excellent swimmers and can dive to great depths. The average life span of emperor penguin in the wild is 15 to 20 years. Emperor penguins currently breed at 61 colonies located around Antarctica, with the largest colonies in the Ross Sea and Weddell Sea. The total population size is estimated at approximately 270,000–280,000 breeding pairs or 625,000–650,000 total birds. Emperor penguin depends upon stable fast ice throughout their 8–9 month breeding season to complete the rearing of its single chick. They are the only warm-blooded Antarctic species that breeds during the austral winter and therefore uniquely adapted to its environment. Breeding colonies mainly occur on fast ice, close to the coast or closely offshore, and amongst closely packed grounded icebergs that prevent ice breaking out during the breeding season and provide shelter from the wind. Sea ice extent in the Southern Ocean has undergone considerable inter-annual variability over the last 40 years, although with much greater inter-annual variability in the five sectors than for the Southern Ocean as a whole. -
Hnitflrcitilc
HNiTflRCiTilC A NEWS BULLETIN published quarterly by the NEW ZEALAND ANTARCTIC SOCIETY (INC) ,m — i * Halley, the British Antarctic Survey's station on the Brunt Ice Shelf, Coats Land,, was rebuilt last season for the third time since 1956-57. This picture taken in March shows one of the four wooden tubes, each of which houses a two-storey building, under construction in a pre-shaped and compacted snow hollow. BAS Copyngh! Registered at Post Office Headquarters, Vol. 10, No. 2 Wellington, New Zealand, as a magazine. SOUTH GEORGIA -.. SOUTH SANDWICH Is «C*2K SOUTH ORKNEY Is x \ 6SignyluK //o Orcadas arg SOUTH AMERICA / /\ ^ Borga T"^00Molodezhnaya \^' 4 south , * /weooEii \ ft SA ' r-\ *r\USSR --A if SHETLAND ,J£ / / ^^Jf ORONMIIDROWNING MAUD LAND' E N D E R B Y \ ] > * \ /' _ "iV**VlX" JN- S VDruzhnaya/General /SfA/ S f Auk/COATS ' " y C O A TBelirano SLd L d l arg L A N D p r \ ' — V&^y D««hjiaya/cenera.1 Beld ANTARCTIC •^W^fCN, uSS- fi?^^ /K\ Mawson \ MAC ROBERTSON LAN0\ \ *usi \ /PENINSULA' ^V^/^CRp^e J ^Vf (set mjp Mow) C^j V^^W^gSobralARG - Davis aust L Siple USA Amundsen-Scon OUEEN MARY LAND flMimy ELLSWORTH , U S A / ^ U S S R ') LAND °Vos1okussR/ r». / f c i i \ \ MARIE BYRO fee Shelf V\ . IAND WILKES LAND Scon ROSS|N2i? SEA jp>r/VICTORIAIj^V .TERRE ,; ' v / I ALAND n n \ \^S/ »ADEUL. n f i i f / / GEORGE V Ld .m^t Dumom d'Urville iranu Leningradskayra V' USSR,.'' \ -------"'•BAlLENYIs^ ANTARCTIC PENINSULA 1 Teniente Matienzo arc 2 Esperanza arg 3 Almirante Brown arg 4 Petrel arg 5 Decepcion arg 6 Vicecomodoro Marambio arg ' ANTARCTICA 7 Ariuro Prat chile 500 1000 Miles 8 Bernardo O'Higgms chile 9 Presidente Frei chile - • 1000 Kilomnre 10 Stonington I. -
Mount Harding, Grove Mountains, East Antarctica
MEASURE 2 - ANNEX Management Plan for Antarctic Specially Protected Area No 168 MOUNT HARDING, GROVE MOUNTAINS, EAST ANTARCTICA 1. Introduction The Grove Mountains (72o20’-73o10’S, 73o50’-75o40’E) are located approximately 400km inland (south) of the Larsemann Hills in Princess Elizabeth Land, East Antarctica, on the eastern bank of the Lambert Rift(Map A). Mount Harding (72°512 -72°572 S, 74°532 -75°122 E) is the largest mount around Grove Mountains region, and located in the core area of the Grove Mountains that presents a ridge-valley physiognomies consisting of nunataks, trending NNE-SSW and is 200m above the surface of blue ice (Map B). The primary reason for designation of the Area as an Antarctic Specially Protected Area is to protect the unique geomorphological features of the area for scientific research on the evolutionary history of East Antarctic Ice Sheet (EAIS), while widening the category in the Antarctic protected areas system. Research on the evolutionary history of EAIS plays an important role in reconstructing the past climatic evolution in global scale. Up to now, a key constraint on the understanding of the EAIS behaviour remains the lack of direct evidence of ice sheet surface levels for constraining ice sheet models during known glacial maxima and minima in the post-14 Ma period. The remains of the fluctuation of ice sheet surface preserved around Mount Harding, will most probably provide the precious direct evidences for reconstructing the EAIS behaviour. There are glacial erosion and wind-erosion physiognomies which are rare in nature and extremely vulnerable, such as the ice-core pyramid, the ventifact, etc. -
Antarctica's Drygalski Ice Tongue
Antarctica’s Drygalski Ice Tongue 1988 2002 Tongue Growth, 1988–2002 The 20-kilometer wide floating slab, known as the Drygalski Ice Tongue, is being pushed into McMurdo Sound, fed by the David Glacier in East Antarctica. Although the sea eats away its ragged sides, the Tongue continues to grow, as shown in this image progression from 1988 (top) to 2002 (middle). Drygalski’s 10-kilometer growth over those 14 years is shown on the bottom picture (red line), and is one measure of how fast some of the Antarctic ice sheet is moving into the sea. www.nasa.gov Antarctica’s Drygalski Ice Tongue Goddard Space Flight Center A Giant Tongue of Ice To meet this critical need, data from over a thousand In these satellite images, the Drygalski Ice Tongue Landsat 7 satellite images like those featured here juts out from the icy land of Antarctica into McMurdo were joined into the most detailed, high-resolution Sound like a pier. Drygalski is a floating extension of natural-color map ever produced of Antarctica. The a land-based glacier. It is one of the largest floating Landsat Image Mosaic of Antarctica (LIMA) offers objects in the world, and contains ice that first fell views of the southernmost continent on Earth in ten as snow on the ice sheet thousands of years ago. times greater detail than previously possible. Some Change is the norm for all glaciers, even for a behemoth locations in LIMA have not even been mapped before! the size of Drygalski. Glacier creation begins when “This is like having a room aboard Landsat to see the more snow falls than melts, and gradually builds up whole ice sheet, yet being able to swoop down to over time.