New Magnetic Anomaly Map of the Antarctic
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Geophysical Research Letters
Dronning maud landRegional aeromagnetic dataPine Island glaciereast antartica
Golynsky, A. V., Ferraccioli, F., Hong, J. K., Golynsky, D. A., Frese, R. R. B., Young, D. A., et al. ( 2018). New magnetic anomaly map of the Antarctic. Geophysical Research Letters, 45, 6437– 6449.
SponsorshipKorea Polar Research Institute (KOPRI) programs, PM15040 and PE17050; Germany's AWI/Helmholtz Center for Polar and Marine Research; Federal Institute for Geosciences and Natural Resources; British Antarctic Survey/Natural Environmental Research Council; Italian Antarctic Research Programme; Russian Ministry of Natural Resources; U.S. National Science Foundation and National Space and Aeronautics Administration; Australian Antarctic Division and Antarctic Climate & Ecosystem Cooperative Research Centre; French Polar Institute; Global geomagnetic observatories network (INTERMAGNET)
The second generation Antarctic magnetic anomaly compilation for the region south of 60 degrees S includes some 3.5 million line-km of aeromagnetic and marine magnetic data that more than doubles the initial map's near-surface database. For the new compilation, the magnetic data sets were corrected for the International Geomagnetic Reference Field, diurnal effects, and high-frequency errors and leveled, gridded, and stitched together. The new magnetic data further constrain the crustal architecture and geological evolution of the Antarctic Peninsula and the West Antarctic Rift System in West Antarctica, as well as Dronning Maud Land, the Gamburtsev Subglacial Mountains, the Prince Charles Mountains, Princess Elizabeth Land, and Wilkes Land in East Antarctica and the circumjacent oceanic margins. Overall, the magnetic anomaly compilation helps unify disparate regional geologic and geophysical studies by providing new constraints on major tectonic and magmatic processes that affected the Antarctic from Precambrian to Cenozoic times.