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Air and shipborne magnetic surveys of the Antarctic into the 21st century

Alexander V. Golynsky; Robin E. Bell; Donald D. Blankenship; Detlef Damaske; Fausto Ferraccioli; Carol A. Finn; D. A. Golynsky; Sergey V. Ivanov; Wilfried Jokat; Valery N. Masolov; Sven Riedel; Ralph R. B. von Frese; Duncan Young

Title:
Air and shipborne magnetic surveys of the Antarctic into the 21st century
Author(s):
Golynsky, Alexander V.
Bell, Robin E.
Blankenship, Donald D.
Damaske, Detlef
Ferraccioli, Fausto
Finn, Carol A.
Golynsky, D. A.
Ivanov, Sergey V.
Jokat, Wilfried
Masolov, Valery N.
Riedel, Sven
Frese, Ralph R. B. von
Young, Duncan
Date:
Type:
Articles
Department:
Lamont-Doherty Earth Observatory
Permanent URL:
Book/Journal Title:
Tectonophysics
Abstract:
The Antarctic geomagnetics' community remains very active in crustal anomaly mapping. More than 1.5 million line-km of new air- and shipborne data have been acquired over the past decade by the international community in Antarctica. These new data together with surveys that previously were not in the public domain significantly upgrade the ADMAP compilation. Aeromagnetic flights over East Antarctica have been concentrated in the Transantarctic Mountains, the Prince Charles Mountains – Lambert Glacier area, and western Dronning Maud Land (DML) — Coats Land. Additionally, surveys were conducted over Lake Vostok and the western part of Marie Byrd Land by the US Support Office for Aerogeophysical Research projects and over the Amundsen Sea Embayment during the austral summer of 2004/2005 by a collaborative US/UK aerogeophysical campaign. New aeromagnetic data over the Gamburtsev Subglacial Mountains (120,000 line-km), acquired within the IPY Antarctica's Gamburtsev Province project reveal fundamental geologic features beneath the East Antarctic Ice sheet critical to understanding Precambrian continental growth processes. Roughly 100,000 line-km of magnetic data obtained within the International Collaboration for Exploration of the Cryosphere through Aerogeophysical Profiling promises to shed light on subglacial lithology and identify crustal boundaries for the central Antarctic Plate. Since the 1996/97 season, the Alfred Wegener Institute has collected 90,000 km of aeromagnetic data along a 1200 km long segment of the East Antarctic coast over western DML. Recent cruises by Australian, German, Japanese, Russian, British, and American researchers have contributed to long-standing studies of the Antarctic continental margin. Along the continental margin of East Antarctica west of Maud Rise to the George V Coast of Victoria Land, the Russian Polar Marine Geological Research Expedition and Geoscience Australia obtained 80,000 and 20,000 line-km, respectively, of integrated seismic, gravity and magnetic data. Additionally, US expeditions collected 128,000 line-km of shipborne magnetic data in the Ross Sea sector.
Subject(s):
Geophysics
Publisher DOI:
http://dx.doi.org/10.1016/j.tecto.2012.02.017
Item views:
191
Metadata:
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