根据EIGEN 6C4的新重力数据及其他数据，对西伯利亚波皮盖附近一个疑似直径200公里的撞击坑科图扬斯卡亚进行研究。

A 200 km suspected impact crater Kotuykanskaya near Popigai, Siberia, in the light of new gravity aspects from EIGEN 6C4, and other data.

作者信息

Klokočník Jaroslav, Kostelecký Jan, Bezděk Aleš, Kletetschka Gunther, Staňková Hana

机构信息

Astronomical Institute, Czech Academy of Sciences, CZ 251 65 Ondřejov, Fričova 298, Czech Republic.

Research Institute of Geodesy, Topography and Cartography, CZ 250 66 Zdiby 98, Prague, Czech Republic.

出版信息

Sci Rep. 2020 Apr 8;10(1):6093. doi: 10.1038/s41598-020-62998-6.

DOI:10.1038/s41598-020-62998-6

PMID:32269264

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7142122/

Abstract

We provide arguments in favour of impact origin of a 200 km suspected impact crater Kotuykanskaya near Popigai, Siberia, Russia. We use the gravity aspects (gravity disturbances, the Marussi tensor of the second derivatives of the disturbing geopotential, the gravity invariants and their specific ratio, the strike angles and the virtual deformations), all derived from the combined static gravity field model EIGEN 6C4, with the ground resolution of about 10 km and a precision of about 10 milliGals. We also use the magnetic anomalies from the model EMAG2 and emphasize the evidence of much deeper sources in the suspected area, constraining the impact origin of this structure.

摘要

我们提供了支持俄罗斯西伯利亚波波盖附近一个疑似200公里撞击坑科图扬斯卡亚撞击起源的论据。我们使用了重力方面的数据（重力扰动、扰动位势二阶导数的马鲁西张量、重力不变量及其特定比值、走向角和虚拟变形），所有这些都来自联合静态重力场模型EIGEN 6C4，地面分辨率约为10公里，精度约为10毫伽。我们还使用了来自模型EMAG2的磁异常，并强调了疑似区域更深源的证据，从而确定了该结构的撞击起源。