Crustal deformation in the Baikal rift from GPS measurements

被引：78

作者：

Calais, E

Lesne, O

Deverchere, J

San'kov, V

Lukhnev, A

Miroshnitchenko, A

Buddo, V

Levi, K

Zalutzky, V

Bashkuev, Y

机构：

[1] UPMC, CNRS, UMR 6526, Geosci Azur, F-06560 Valbonne, France

[2] Russian Acad Sci, Inst Earth Crust, Siberian Branch, Irkutsk 664033, Russia

[3] VS NIIFTRI, Time & Frequency Serv Div, Irkutsk 664056, Russia

[4] Russian Acad Sci, Buryat Sci Ctr, Siberian Branch, Ulan Ude 670047, Russia

来源：

GEOPHYSICAL RESEARCH LETTERS | 1998年 / 25卷 / 21期

关键词：

D O I：

10.1029/1998GL900067

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Three years and four campaigns of Global Positioning System (GPS) measurements (1994-1997) in the Baikal rift zone, largest active continental rift system in Eurasia, show crustal extension at a rate of 4.5+/-1.2 mm/yr in a WNW-ESE direction. A comparison with moment release of-large historical earthquakes suggests that elastic strain is currently accumulating in the Baikal rift zone along active faults that currently have the potential for a M=7.5 earthquake. The GPS-derived extension rate. in the Baikal rift zone is at least two times greater than the prediction of most deformation models of Asia. This result could reflect the dynamic contribution of the Pacific-Eurasia subduction to intracontinental deformation in Asia, in addition to the effect of the India-Eurasia collision.

引用

页码：4003 / 4006

页数：4

共 30 条

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