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Full-Text Articles in Physical Sciences and Mathematics
Aquaculture-Based Calibration Of The M.Edulis Isotope Paleothermometer, Karl J. Kreutz, Harold Borns, Douglas Introne, Bruce Barber, Sven Funder
Aquaculture-Based Calibration Of The M.Edulis Isotope Paleothermometer, Karl J. Kreutz, Harold Borns, Douglas Introne, Bruce Barber, Sven Funder
University of Maine Office of Research Administration: Grant Reports
Oxygen isotopic analysis of marine carbonate shells (δ18Oc) is a standard paleoceanographic technique used to document the chronology of seawater temperature change. Shell δ18Oc depends not only upon seawater temperature, but also upon the isotopic composition of the seawater (δ18Ow; related to salinity) and any species-specific fractionation that occurs during biomineralization. In the past, the interpretation of shell δ18Oc has been based upon theoretical studies of chemical equilibrium and kinetics, or laboratory experiments involving the inorganic precipitation of CaCO3 from solution. Other methods have employed …
Glacial History Of The Amundsen Sea Shelf, Thomas B. Kellogg, Daniel Belknap, Davida Kellogg, Terence Hughes
Glacial History Of The Amundsen Sea Shelf, Thomas B. Kellogg, Daniel Belknap, Davida Kellogg, Terence Hughes
University of Maine Office of Research Administration: Grant Reports
This award, provided by the Antarctic Geology and Geophysics Program of the Office of Polar Programs, supports a marine geological investigation of the Amundsen Sea region toward a better understanding of the deglaciation history of the West Antarctic Ice Sheet (WAIS). The WAIS may be inherently unstable because it is the last marine-based ice sheet in the world. Unlike other embayments in West Antarctica, major ice streams draining into the Amundsen Sea from the interior of the WAIS lack buttressing ice shelves. Mass balance data for the distal portions of these ice streams (Pine Island and Thwaites glaciers) appear to …
Snow Chemistry Across Antarctica, Nancy Bertler, Paul Andrew Mayewski, Alberto Aristarain, P. Barrett, S. Becagli, Ronaldo Torma Bernardo, Xiao Cunde, M. Curran, Qin Dahe, Daniel Dixon, Francisco Adolfo Ferron, H. Fischer, Markus Frey, M. Frezzotti, F. Fundel, Christophe Genthon, R. Gragani, Gordon Hamilton, M. Handley, Sungmin Hong, E. Isaksson, Ren Jiawen, Kokichi Kamiyama, Satoru Kanamori, Eija Karkas, L. Karlöf, S. Kaspari, K. Kreutz, A. Kurbatov, E. Meyerson, Hideaki Motoyama, R. Mulvaney, Zhang Mingjun, H. Oerter, E. Osterberg, M. Proposito, A. Pyne, U. Ruth, Jefferson Cardia Simoes, B. Smith, S. Sneed, Kimmo Teinila, F. Traufetter, R. Udisti, Aki Virkkula, Okitsugu Watanabe, B. Williamson, E. Wolff, Li Zhongqin
Snow Chemistry Across Antarctica, Nancy Bertler, Paul Andrew Mayewski, Alberto Aristarain, P. Barrett, S. Becagli, Ronaldo Torma Bernardo, Xiao Cunde, M. Curran, Qin Dahe, Daniel Dixon, Francisco Adolfo Ferron, H. Fischer, Markus Frey, M. Frezzotti, F. Fundel, Christophe Genthon, R. Gragani, Gordon Hamilton, M. Handley, Sungmin Hong, E. Isaksson, Ren Jiawen, Kokichi Kamiyama, Satoru Kanamori, Eija Karkas, L. Karlöf, S. Kaspari, K. Kreutz, A. Kurbatov, E. Meyerson, Hideaki Motoyama, R. Mulvaney, Zhang Mingjun, H. Oerter, E. Osterberg, M. Proposito, A. Pyne, U. Ruth, Jefferson Cardia Simoes, B. Smith, S. Sneed, Kimmo Teinila, F. Traufetter, R. Udisti, Aki Virkkula, Okitsugu Watanabe, B. Williamson, E. Wolff, Li Zhongqin
Earth Science Faculty Scholarship
An updated compilation of published and new data of major-ion (Ca, Cl, K, Mg, Na, NO3, SO4) and methylsulfonate (MS) concentrations in snow from 520 Antarctic sites is provided by the national ITASE (International Trans-Antarctic Scientific Expedition) programmes of Australia, Brazil, China, Germany, Italy, Japan, Korea, New Zealand, Norway, the United Kingdom, the United States and the national Antarctic programme of Finland. The comparison shows that snow chemistry concentrations vary by up to four orders of magnitude across Antarctica and exhibit distinct geographical patterns. The Antarctic-wide comparison of glaciochemical records provides a unique opportunity to improve …
The International Trans-Arctic Scientific Expedition (Itase): An Overview, Paul Andrew Mayewski, Massimo Frezzotti, Nancy Bertler, Tas Van Ommen, Gordon S. Hamilton, Tim H. Jacka, Brian Welch, Markus Frey, Dahe Qin, Jiawen Ren, Jefferson Simões, Michel Fily, Hans Oerter, Fumihiko Nishio, Elisabeth Isaksson, Robert Mulvaney, Per Holmund, Volodya Lipenkov, Ian Goodwin
The International Trans-Arctic Scientific Expedition (Itase): An Overview, Paul Andrew Mayewski, Massimo Frezzotti, Nancy Bertler, Tas Van Ommen, Gordon S. Hamilton, Tim H. Jacka, Brian Welch, Markus Frey, Dahe Qin, Jiawen Ren, Jefferson Simões, Michel Fily, Hans Oerter, Fumihiko Nishio, Elisabeth Isaksson, Robert Mulvaney, Per Holmund, Volodya Lipenkov, Ian Goodwin
Earth Science Faculty Scholarship
From its original formulation in 1990 the International Trans-Antarctic Scientific Expedition (ITASE) has had as its primary aim the collection and interpretation of a continent-wide array of environmental parameters assembled through the coordinated efforts of scientists from several nations. ITASE offers the ground-based opportunities of traditional-style traverse travel coupled with the modern technology of GPS, crevasse detecting radar, satellite communications and multidisciplinary research. By operating predominantly in the mode of an oversnow traverse, ITASE offers scientists the opportunity to experience the dynamic range of the Antarctic environment. ITASE also offers an important interactive venue for research similar to that afforded …