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- Keyword
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- Climate Change (2)
- Climate variability (2)
- Antarctic Glaciology (1)
- Antarctic Glaciology and Geophysics (1)
- Bi (1)
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- Cryology (1)
- East Rongbuk ice core (1)
- Geochemistry (1)
- Glaciochemistry (1)
- Glaciogeology (1)
- Glaciology (1)
- Ice core (1)
- Ice sheet model (1)
- Major soluble ions (1)
- Mt. Qomolangma (1)
- PDO. (1)
- Ross Sea Embayment Drainage System (1)
- Soluble dust (1)
- Tibetan Plateau (1)
- Volcanic events (1)
- Wilkes Land (1)
Articles 1 - 7 of 7
Full-Text Articles in Physical Sciences and Mathematics
Boron In Antarctic Granulite-Facies Rocks: Under What Conditions Is Boron Retained In The Middle Crust?, Edward S. Grew
Boron In Antarctic Granulite-Facies Rocks: Under What Conditions Is Boron Retained In The Middle Crust?, Edward S. Grew
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 project to investigate the role and fate of Boron in high-grade metamorphic rocks of the Larsemann Hills region of Antarctica. Trace elements provide valuable information on the changes sedimentary rocks undergo as temperature and pressure increase during burial. One such element, boron, is particularly sensitive to increasing temperature because of its affinity for aqueous fluids, which are lost as rocks are buried. Boron contents of unmetamorphosed pelitic sediments range from 20 to over 200 parts per million, but rarely exceed 5 parts …
The Science Behind Climate Change: A Journey To Reedy Glacier, Brenda L. Hall, Molly Schauffler
The Science Behind Climate Change: A Journey To Reedy Glacier, Brenda L. Hall, Molly Schauffler
University of Maine Office of Research Administration: Grant Reports
This Communicating Research to Public Audiences project focuses on the Reedy Glacier Antarctic research of Brenda Hall (OPP 0229034) and its relevance to the residents of and visitors to Maine. Collaborators include the University of Maine, the Maine Discovery Museum, the Acadia National Park and Cadillac Mountain Sports (an environmentally active retail company with several stores around the state). The primary deliverable is the development of an interactive software program that presents information and experiences in a two-tiered concept approach -- on the Reedy Glacier and its connection to Maine and on the process of science. The software is being …
Us Itase Glaciochemistry Phase 2: East Antarctica, Paul Mayewski
Us Itase Glaciochemistry Phase 2: East Antarctica, Paul Mayewski
University of Maine Office of Research Administration: Grant Reports
This award supports a project to undertake glaciochemical investigations of the Ross Sea Embayment Drainage System, and portions of Wilkes Land for purposes of understanding annual to multi-centennial scale climate variability. The glaciochemical data that will be collected will contribute to the U.S. component of the International Trans-Antarctic Scientific Expedition and will occur over a period of two years on an overland traverse that will begin at Taylor Dome in Northern Victoria Land and travel to the South Pole. This data, along with similar information collected on a series of earlier traverse in West Antarctica, will contribute to providing an …
Atmospheric Soluble Dust Records From A Tibetan Ice Core: Possible Climate Proxies And Teleconnection With The Pacific Decadal Oscillation, B. Grigholm, Paul A. Mayewski, Kang Shichang, Y. Zang, S. Kaspari, Sharon B. Sneed, Q. Zhang
Atmospheric Soluble Dust Records From A Tibetan Ice Core: Possible Climate Proxies And Teleconnection With The Pacific Decadal Oscillation, B. Grigholm, Paul A. Mayewski, Kang Shichang, Y. Zang, S. Kaspari, Sharon B. Sneed, Q. Zhang
Climate Change Institute Faculty Scholarship
In autumn 2005, a joint expedition between the University of Maine and the Institute of Tibetan Plateau Research recovered three ice cores from Guoqu Glacier (33°34′37.8″N, 91°10′35.3″E, 5720 m above sea level) on the northern side of Mt. Geladaindong, central Tibetan Plateau. Isotopes (δ18O), major soluble ions (Na+, K+, Mg2+, Ca2+, Cl−, NO3−, SO42−), and radionuclide (β-activity) measurements from one of the cores revealed a 70-year record (1935–2005). Statistical analysis of major ion time series suggests that atmospheric soluble …
Embedded Ice Sheet Model, James L. Fastook
Embedded Ice Sheet Model, James L. Fastook
University of Maine Office of Research Administration: Grant Reports
This award supports the development of an embedded ice sheet model, one where a section of the ice sheet (at a mesoscale) is modeled at higher resolution, but is driven by output from a lower-resolution model of the entire ice sheet (at a global scale). In addition to giving higher resolution results, it will be better able to capture the behavior of small-scale, but dynamically important, systems such as ice streams. It will also be possible with the new embedded model to include more complete physics (such as longitudinal stresses). This project will enable the continued development and application of …
Records Of Volcanic Events Since Ad 1800 In The East Rongbuk Ice Core From Mt. Qomolangma, Jian Zhong Xu, S. Kaspari, Shu Gui Hou, Shi Chang Kang, Da He Qin, Jia Wen Ren, Paul Andrew Mayewski
Records Of Volcanic Events Since Ad 1800 In The East Rongbuk Ice Core From Mt. Qomolangma, Jian Zhong Xu, S. Kaspari, Shu Gui Hou, Shi Chang Kang, Da He Qin, Jia Wen Ren, Paul Andrew Mayewski
Earth Science Faculty Scholarship
Continuous Bi profile of the East Rongbuk (ER) ice core near Mt. Qomolangma reveals nine major volcanic events since AD 1800. Compared with Volcanic Explosivity Index (VEI), it shows that the concentrations of Bi in the ER ice core can reflect the major volcanic events within the key areas. This provides a good horizon layer for ice core dating, as well as a basis for reconstructing a long sequence of volcanic records from the Qinghai-Xizang (Tibet) Plateau ice cores.
State Of The Antarctic And Southern Ocean Climate System, Paul Andrew Mayewski, M. P. Meredith, C. P. Summerhayes, J. Turner, A. Worby, P. J. Barrett, G. Casassa, Nancy Bertler, T. Bracegirdle, A. C. Naveira Garabato, D. Bromwich, H. Campbell, Gordon S. Hamilton, W. B. Lyons, Kirk A. Maasch, S. Aoki, C. Xiao, Tas Van Ommen
State Of The Antarctic And Southern Ocean Climate System, Paul Andrew Mayewski, M. P. Meredith, C. P. Summerhayes, J. Turner, A. Worby, P. J. Barrett, G. Casassa, Nancy Bertler, T. Bracegirdle, A. C. Naveira Garabato, D. Bromwich, H. Campbell, Gordon S. Hamilton, W. B. Lyons, Kirk A. Maasch, S. Aoki, C. Xiao, Tas Van Ommen
Earth Science Faculty Scholarship
This paper reviews developments in our understanding of the state of the Antarctic and Southern Ocean climate and its relation to the global climate system over the last few millennia. Climate over this and earlier periods has not been stable, as evidenced by the occurrence of abrupt changes in atmospheric circulation and temperature recorded in Antarctic ice core proxies for past climate. Two of the most prominent abrupt climate change events are characterized by intensification of the circumpolar westerlies (also known as the Southern Annular Mode) between ∼6000 and 5000 years ago and since 1200–1000 years ago. Following the last …