000195952 001__ 195952
000195952 003__ CZ-ZdVUG
000195952 005__ 20191202142459.0
000195952 041__ $$aeng
000195952 040__ $$aABC039$$bcze
000195952 1001_ $$aKostelecký, Jan
000195952 24510 $$aOn the detection of the Wilkes Land impact crater
000195952 300__ $$a21 stran
000195952 5203_ $$aThe definitive existence of a giant impact crater, two times larger than the Chixulub crater in the Yucatan peninsula, from an extraterrestrial origin, 1.6 km beneath Wilkes Land, East Antarctica, remain controversial. Here, we use the latest high-resolution gravito-topographic geopotential (SatGravRET 2014) model over Antarctica to offer a plausible confirmation of its existence. SatGravRET 2014 has a spatial resolution between 1 and 10 km at most places and included contemporary space gravimetry and gradiometry data from GRACE and GOCE, and other data including Bedmap 2 bedrock topography. We computed the gravity disturbances, the Marussi tensor of the second derivatives of the disturbing potential, the gravity invariants and their specific ratio, the strike angles and the virtual deformations to quantify the detailed geophysical features for the Wilkes Land anomaly. This set of the gravitational parameters revealed enhanced and more detailed geophysical features on the Wilkes Land Crater than previously possible only with the traditional gravity anomalies. Our findings support prior studies stating that in the Wilkes Land there is a huge impact crater/basin with detectable gravity mascon which is mostly consistent with the characteristics of an impact crater.
000195952 655_4 $$ačlánek v odborném periodiku
000195952 7001_ $$aBezděk, Aleš
000195952 7001_ $$aKlokočník, Jaroslav
000195952 7730_ $$92018$$dSpojené království Velké Británie a Severního Irska, 2018.$$g70. (17.8.2018), s.$$tEarth, Planets and Space$$x1880-5981
000195952 8564_ $$uhttps://earth-planets-space.springeropen.com/articles/10.1186/s40623-018-0904-7
000195952 85642 $$ahttps://www.rvvi.cz/riv?s=rozsirene-vyhledavani&ss=detail&n=0&h=RIV%2F00025615%3A_____%2F18%3AN0000032%21RIV19-MSM-00025615
000195952 910__ $$aABC039
000195952 980__ $$aclanky_vugtk
000195952 985__ $$akosteleckyjan
000195952 985__ $$ariv
000195952 985__ $$autvar24