典型文献
Geodetic Analysis inside the South Korean Peninsula and Impact of the 2011 Tohoku–Oki (TO) Earthquake
文献摘要：
The most powerful Tohoku–Oki (TO) earthquake that occurred in Japan on 11 March 2011 affected Japan as well as South Korea. In the current study, we investigated contemporary geodetic deformation inside South Korea before and after the TO earthquake using Global Navigation Satellite System (GNSS) measurements from 01 January 2008 to 31 December 2017. Measured velocities of GNSS sites are modeled by Auto-regressive moving average (ARMA) method to analyze the long-term GNSS time-series variation and to investigate the secular tectonic crustal deformation. We found that the maximum co-seismic displacements during the TO earthquake reached up to 36.82 ± 0.21 mm in the east and 5.90 ± 0.08 mm in the north directions. The geometric model of the co-seismic thrust surface was characterized by a rectangular plane with a dip of 12.0° and strike 200°. The thrust is situated at 25 km hypocenter depth, with an area roughly ～470 km long and ～120 km wide. The seismicity pattern after the earthquake indicated that the compressional strain started to be replaced by the extensional strain during the post TO earthquake period from 2011 to 2014. Further, the strain became predominantly extensional during the period 2015 to 2017, revealing an effective rotational change that occurred inside the Korean Peninsula.
文献关键词：
中图分类号：
作者姓名：
Kutubuddin ANSARI;Kwan-Dong PARK
作者机构：
Integrated Geoinformation (IntGeo) Solution Private Limited,New Delhi 110025,India;Department of Geoinformatic Engineering,Inha University,100 Inha-ro,Incheon 22212,Korea
文献出处：
引用格式：
[1]Kutubuddin ANSARI;Kwan-Dong PARK-.Geodetic Analysis inside the South Korean Peninsula and Impact of the 2011 Tohoku–Oki (TO) Earthquake)[J].地质学报（英文版）,2022(02):631-647
A类：
Oki
B类：
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AB值：
0.572431
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