A group velocity of seismic love surface wave and lithosphere structure in Antarctic Peninsula

This paper is based on the surface wave seismogram of South Sandwich Island earthquake (Ms = 6.4) recorded by Antarctic General Bernardo O'Higgins Station. We computed a group velocity dispersion of Love surface wave and obtained lithosphere structure by using the method of the matched-filter f...

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Bibliographic Details
Main Authors: Peiyi, Shu, Jiafu, Hu, Jiwen, Teng, Zhongjie, Zhang, Chengmin, Jiao
Format: Article in Journal/Newspaper
Language:English
Published: Polar Research Institute of China - PRIC 1997
Subjects:
Antarctic
Antarctic Peninsula
O'Higgins Station
General Bernardo O'Higgins
Bernardo O'Higgins Station
Advances in Polar Science
Antarc*
Polar Science
Online Access:http://library.arcticportal.org/2135/
http://library.arcticportal.org/2135/1/A702.002.pdf
Description
Summary:This paper is based on the surface wave seismogram of South Sandwich Island earthquake (Ms = 6.4) recorded by Antarctic General Bernardo O'Higgins Station. We computed a group velocity dispersion of Love surface wave and obtained lithosphere structure by using the method of the matched-filter frequency-time analysis and grid dispersion inversion. Our result shows that crust structure below Antarctic Peninsula may be divided into three layers and their thickness are respectively 5km, 8km and 10km. Upper mantle velocity is 5.32 km/s and gradually changes into 5.11 - 4.9 km/s below 53 km. The minimum velocity is 4.8 km/s. It can be referred that Antarctic mantle is also of layered structure.

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