| タイトル | GRACE Gravity Data Target Possible Mega-impact in North Central Wilkes Land, Antarctica |
| 本文（外部サイト） | http://hdl.handle.net/2060/20050180397 |
| 著者（英） | Kim, Jeong Woo; Wells, Stuart B.; Golynsky, Alexander V.; Hwang, Jong Sun; Gaya-Pique, Luis R.; Hernandez, Orlando; Kim, Hyung Rae; Taylor, Patrick T.; vonFrese, Ralph R. B.; Potts. Laramie V. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2005-01-01 |
| 言語 | eng |
| 内容記述 | A prominent positive GRACE satellite-measured free-air gravity anomaly over regionally depressed subglacial topography may identify a mascon centered on (70 deg S, 120 deg E) between the Gamburtsev and Transantarctic Mountains of East Antarctica. Being more than twice the size of the Chicxulub crater, the inferred Wilkes Land impact crater is a strong candidate for a Gondwana source of the greatest extinction of life at the end of the Permian. Its ring structure intersects the coastline and thus may have strongly influenced the Cenozoic rifting of East Antarctica from Australia that resulted in the enigmatic lack of crustal thinning on the conjugate Australian block. |
| NASA分類 | Geophysics |
| 権利 | Copyright, Distribution under U.S. Government purpose rights |
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