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
收藏
页码：4003 / 4006
页数：4
相关论文
共 30 条
[21]   Present-day kinematics of Asia derived from geologic fault rates [J].
Peltzer, G ;
Saucier, F .
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 1996, 101 (B12) :27943-27956
[22]   Present-day stress field changes along the Baikal rift and tectonic implications [J].
Petit, C ;
Deverchere, J ;
Houdry, F ;
Sankov, VA ;
Melnikova, VI ;
Delvaux, D .
TECTONICS, 1996, 15 (06) :1171-1191
[23]   On the structure and mechanical behaviour of the extending lithosphere in the Baikal rift from gravity modelling [J].
Petit, C ;
Burov, E ;
Deverchere, J .
EARTH AND PLANETARY SCIENCE LETTERS, 1997, 149 (1-4) :29-42
[24]  
PETIT C, 1998, IN PRESS TECTONOPHYS
[25]  
Solonenko V. P., 1977, SEISMIC ZONING E SIB
[26]   ACTIVE FAULTING AND CENOZOIC TECTONICS OF THE TIEN SHAN, MONGOLIA, AND BAYKAL REGIONS [J].
TAPPONNIER, P ;
MOLNAR, P .
JOURNAL OF GEOPHYSICAL RESEARCH, 1979, 84 (NB7) :3425-&
[27]   Plank uplift and topography at the central Baikal Rift (SE Siberia): A test of kinematic models for continental extension [J].
vanderBeek, P .
TECTONICS, 1997, 16 (01) :122-136
[28]  
WELLS DL, 1994, B SEISMOL SOC AM, V84, P974
[29]   Extension in the graben systems around the Ordos (China), and its contribution to the extrusion tectonics of south China with respect to Gobi-Mongolia [J].
Zhang, YQ ;
Mercier, JL ;
Vergely, P .
TECTONOPHYSICS, 1998, 285 (1-2) :41-75
[30]   THE BAIKAL RIFT - AN EXAMPLE OF THE INTRUSION OF ASTHENOSPHERIC MATERIAL INTO THE LITHOSPHERE AS THE CAUSE OF DISRUPTION OF LITHOSPHERIC PLATES [J].
ZORIN, YA .
TECTONOPHYSICS, 1981, 73 (1-3) :91-104
123