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Articles 1 - 8 of 8
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Satellite Remote Sensing Of Glaciers And Ice Caps In Svalbard, Eurasian High Arctic, Gordon S. Hamilton
Satellite Remote Sensing Of Glaciers And Ice Caps In Svalbard, Eurasian High Arctic, Gordon S. Hamilton
University of Maine Office of Research Administration: Grant Reports
Recent compilations of climate-related observations show that important changes are now underway in the High Arctic, probably as a response to anthropogenic greenhouse gas emissions over the last approximately 250 years. These changes include warming of the troposphere, reductions in sea ice cover, decreases in snow cover area, warming of tundra permafrost, and negative mass balances of glaciers and ice caps. In many instances, observations of change are relatively short in duration or sparse in spatial extent. The Principal Investigators will study glacier and ice cap variations over the approximately last 80 years and at a large scale on Svalbard. …
Collaborative Research: Millennial-Scale Fluctuations Of Dry Valleys Lakes: Implications For Regional Climate Variability And The Interhemispheric (A)Synchrony Of Climate Change, Brenda Hall, Glenn Berger
Collaborative Research: Millennial-Scale Fluctuations Of Dry Valleys Lakes: Implications For Regional Climate Variability And The Interhemispheric (A)Synchrony Of Climate Change, Brenda Hall, Glenn Berger
University of Maine Office of Research Administration: Grant Reports
This award supports a project to add to the understanding of what drives glacial cycles. Most researchers agree that Milankovitch seasonal forcing paces the ice ages but how these insolation changes are leveraged into abrupt global climate change remains unknown. A current popular view is that the climate of Antarctica and the Southern Ocean leads that of the rest of the world by a couple thousand years at Termination I and by even greater margins during previous terminations. This project will integrate the geomorphological record of glacial history with a series of cores taken from the lake bottoms in the …
Collaborative Research: A Glaciochemical Record Of Natural And Anthropengic Environmental Change In The Northwestern North American Arctic, Karl J. Kreutz
Collaborative Research: A Glaciochemical Record Of Natural And Anthropengic Environmental Change In The Northwestern North American Arctic, Karl J. Kreutz
University of Maine Office of Research Administration: Grant Reports
This is a collaborative proposal between the Universities of New Hampshire and Maine and the Geological Survey of Canada. This Office of International Science and Engineering is contributing to this award. The Principal Investigators will recover two ice cores the Eclipse Icefield (3100 meters) in the St. Elias
Mountains, Yukon Territory, Canada in cooperation with the Geological Survey of Canada in 2002. The core will be analyzed for stable isotopes, major ions, trace elements, rare earth elements and persistent organic pollutants. The Eclipse record will provide, for the first time, detailed depositional histories of a wide variety of pollutants during …
Collaborative Research: A 700-Year Tephrochronology Of The Law Dome Ice Core, East Antarctica, Gregory A. Zielinski
Collaborative Research: A 700-Year Tephrochronology Of The Law Dome Ice Core, East Antarctica, Gregory A. Zielinski
University of Maine Office of Research Administration: Grant Reports
This award supports a project to analyze samples from the Law Dome ice core for volcanic tephra. The Law Dome ice core is the best-dated ice core from East Antarctica and contains a detailed record of climate and atmospheric chemistry over at least the last 700 years. Several global volcanic eruptions appear to be recorded in the Law Dome core, including the well known Tambora 1815 and Unknown 1809 events, as well as the Huaynaputina 1600 and Ruiz 1595 events. To verify the source eruptions responsible for these signals, as well as to differentiate between local Antarctic and southern hemisphere …
Highly Detailed Reconstructions Of New England Weather Over The Past Few Centuries And Their Climatic Implications, Gregory A. Zielinski
Highly Detailed Reconstructions Of New England Weather Over The Past Few Centuries And Their Climatic Implications, Gregory A. Zielinski
University of Maine Office of Research Administration: Grant Reports
This award will enable researchers to reconstruct daily weather conditions for New England over the past 300 years by compiling and analyzing written archives such as diaries, journals, agricultural records, and marine logs. These archives will be used to reconstruct daily weather maps that will be compared with recent climatic conditions. New England has a large number of lengthy weather archives and is a region sensitive to changing climatic conditions. The region is influenced by storm tracks and upper-air disturbances that impact the Canadian High, Icelandic Low and the Bermuda-Azores High from year-to-year.
Obtaining highly detailed and lengthy records of …
A New Mt. Logan Ice Core Record - Change In Climate And Chemistry Of The Atmosphere For The North Pacific, Paul Andrew Mayewski, Gregory Zielinski, Karl J. Kreutz, Andrei V. Kurbatov
A New Mt. Logan Ice Core Record - Change In Climate And Chemistry Of The Atmosphere For The North Pacific, Paul Andrew Mayewski, Gregory Zielinski, Karl J. Kreutz, Andrei V. Kurbatov
University of Maine Office of Research Administration: Grant Reports
Mt. Logan, in the St. Elias Range, southeast Alaska, offers a unique opportunity for monitoring climate change and change in the atmospheric chemistry of the Gulf of Alaska and the North Pacific. In 1980, a 103-meter (M) ice core was recovered from Mt. Logan which spanned AD 1689-1980. It revealed well-defined annual layers, calibrated through the identification of radioactive bomb and volcanic horizons, allowing continuous, sub-seasonal sampling for stable isotopes and ion chemistry. The -29 degree C mean annual temperature at the site assures that the soluble, insoluble, and isotopic components of the core are well preserved.
In 2001 and …
Glaciology Of Blue Ice Areas In Antarctica, Gordon Hamilton
Glaciology Of Blue Ice Areas In Antarctica, Gordon Hamilton
University of Maine Office of Research Administration: Grant Reports
A 'horizontal ice core' was collected at the Mount Moulton blue ice field in West Antarctica and preliminary analyses of the sample material suggests that a ~500 kyr climate record is preserved in the ice at this site. This award will contribute to the understanding of the Mt Moulton record by assessing the potential for ice-flow induced deformation of the stratigraphic profile. In addition, this award builds on the recognition of blue ice areas as archives of long climate records by conducting reconnaissance studies for a potential horizontal ice core location at the Allan Hills in East Antarctica. The objectives …
A Science Management Office For The U. S. Component Of The International Trans Antarctic Expedition (Us Itase Smo)Ûa Collaborative Pgrm Of Research From S. Pole To N. Victoria Land, Paul A. Mayewski, Gordon S. Hamilton
A Science Management Office For The U. S. Component Of The International Trans Antarctic Expedition (Us Itase Smo)Ûa Collaborative Pgrm Of Research From S. Pole To N. Victoria Land, Paul A. Mayewski, Gordon S. Hamilton
University of Maine Office of Research Administration: Grant Reports
This award supports a science management office for a pilot ice-core drilling and analysis program to test the feasibility of obtaining well-dated, high-resolution isotope and chemistry records from East Antarctica. Shallow ice cores will be obtained from two locations: 1) ~100 km from South Pole towards the Pole of Inaccessibility, as an extension of the Byrd Station-to-South Pole ITASE traverse [International Trans Antarctic Scientific Expedition]; 2) at Taylor Dome, near the original deep coring site, and (3) possibly at AGO 3 and AGO 4 as part of a logistics traverse to these sites. All of the cores collected will be …