Antarctica A Keystone in a Changing World (2008) / Chapter Skim
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Antarctic Earth System Science in the International Polar Year 2007-2008--R. E. Bell
Antarctic Earth System Science in the International Polar Year 2007-2008--R. E. Bell
Pages 7-18
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From page 7... ...
While intuitively we all themes are to determine the polar regions' present environ- appreciate that planetary change happens, as the concept of mental status, quantify and understand past and present polar an international polar year emerged the evidence for rapid change, advance our understanding of the links between and dynamic planetary change was becoming omnipresent. polar regions and the globe, and investigate the polar fron- Early in 2002 an ice shelf that had been stable for at least tiers of science.
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From page 8... ...
They only furnish us processes, rather than geographic frontiers. The community with a picture of the extreme effects of the forces of Nature remains intensely motivated by Nansen's second restless in the Arctic regions, but leave us completely in the dark with quest, which is to seek knowledge "till every enigma has respect to their causes." been solved." While Nansen sought to understand the circu- Weyprecht believed that the systematic successful study lation in the Arctic Ocean, today we see major opportunities of the polar regions and large-scale polar phenomena by a for scientific discovery in Antarctic Earth science.
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From page 9... ...
It is for us to explore The third IPY expanded beyond the polar regions, the remaining frontiers using the cutting-edge technologies quickly becoming global. This polar year was renamed the available to us today: jet aircraft, ships, satellites, lasers, the International Geophysical Year (IGY)
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From page 10... ...
ICSU approved the proposal and the Planning versary of the International Polar Year." One year later the Committee met for the first time in August 2003. The plandiscussions were still on the margins, with a short note in ning had moved past a celebration to setting a science agenda the report from the SCAR executive meeting, under the title for a major international interdisciplinary effort (Figure 4)
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From page 11... ...
These frontiers in Earth science are intensive polar observation and analysis. This current year primarily beneath the ice sheet or beneath the ocean floor is just the beginning.
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From page 12... ...
MAJOR INTERNATIONAL POLAR YEAR EARTH AGAP/PANDA projects, which target the origin, evolution, SCIENCE PROJECTS and setting of subglacial lakes and the Gamburtsev subgla cial highlands and the structure of the Dome A region, are The principal IPY 2007-2008 Antarctic Earth science proj both clear examples of the New Frontiers theme. As the ects address change and all its components and exploration POLENET observatories will include components capable of of new frontiers.
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From page 13... ...
Geological Survey: Integrated Research 54 ACE Antarctic Climate Evolution 97 ICECAP Investigating the Cryospheric Evolution of the Antarctic Plate 33 ANTPAS Antarctic Permafrost and Soils 313 PANDA The Prydz Bay, Amery Ice Shelf, and Dome-A Observatories 42 SALE-UNITED Subglacial Antarctic Lake Environments-Unified International Team for Exploration and Discovery FIGURE 6 Left: Location of planned POLENET sites in Antarctica. Stars = New stations.
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From page 14... ...
. As part of the global overall glacial and interglacial history for the region, includ- ocean circulation, water masses move through these pasing documentation of sea-ice coverage, sea level, terrestrial sageways, and major shifts in the ocean gateways produce vegetation, and meltwater discharge events.
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From page 15... ...
The PANDA unexplored since they were discovered during the IGY in transect from Prydz Bay-Amery Ice Shelf-Lambert Glacier 1958. The Gamburtsev Subglacial Mountains are a 400-km- Basin-Dome A covers an interconnected ocean, ice-shelf, and wide elevated massif rising 2000-3000 m above the regional ice-sheet system, which plays a very important role in East topography and resting beneath the ice divide at Dome A, the Antarctica mass balance, sea level, and climate change.
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From page 16... ...
Together they illustrate the breadth of the Antarca major advance in the study of subglacial lakes. The suc tic Earth science programs for the IPY 2007-2008.
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From page 17... ...
TABLE 2 Five Major Antarctic Geophysical Events Targeted by IPY 2007-2008 Programs Uplift of the Origin, History, Status, Major Formation of East Breakup of Extension of the Transantarctic Stability of Antarctic Ice Event Antarctic Craton Gondwana Ross Sea Mountains Sheets IPY AGAP, Plates and Gates ANDRILL, ANDRILL, AGAP, PANDA, 2007-2008 PANDA POLENET Plates and Gates ANDRILL, Programs Plates and Gates, POLENET, SALE-UNITED
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From page 18... ...
is eroding West Antarctic ice sheet. Geophysical Research Letters Allison, I
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