Fennoscandian earthquakes: Whole crustal rupturing related to postglacial rebound

被引:149
作者
Arvidsson, R [1 ]
机构
[1] UNIV UPPSALA, SEISMOL DEPT, S-75002 UPPSALA, SWEDEN
关键词
D O I
10.1126/science.274.5288.744
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Local and regional earthquake locations provide seismic evidence that large shield earthquakes have occurred in northern Fennoscandia. These paleoearthquakes, with fault lengths of up to 160 kilometers and average displacements of up to 15 meters, were triggered by nonisostatic compressive stresses caused by the removal of the ice at the end of the last deglaciation, The Fennoscandian faults were probably formed by single events that ruptured through most of the crust, The largest event, moment magnitude M(W) approximate to 8.2, was larger than other known stable continent earthquakes outside failed rifts or extended crust.
引用
收藏
页码:744 / 746
页数:3
相关论文
共 32 条
[1]   EARTHQUAKES IN NORTHERN EUROPE IN 1375-1989 [J].
AHJOS, T ;
USKI, M .
TECTONOPHYSICS, 1992, 207 (1-2) :1-23
[2]   SEISMODYNAMICS OF SWEDEN DEDUCED FROM EARTHQUAKE FOCAL MECHANISMS [J].
ARVIDSSON, R ;
KULHANEK, O .
GEOPHYSICAL JOURNAL INTERNATIONAL, 1994, 116 (02) :377-392
[3]  
ARVIDSSON R, 1993, 9313 SWED NUCL FUEL
[4]  
ARVIDSSON R, 1991, THESIS UPPSALA U UPP
[5]   HEAT-FLOW AND THERMAL STRUCTURE OF THE LITHOSPHERE ACROSS THE BALTIC SHIELD AND NORTHERN TORNQUIST ZONE [J].
BALLING, N .
TECTONOPHYSICS, 1995, 244 (1-3) :13-50
[6]   SEISMICITY AND SEISMOTECTONICS OF NORWAY AND NEARBY CONTINENTAL-SHELF AREAS [J].
BUNGUM, H ;
ALSAKER, A ;
KVAMME, LB ;
HANSEN, RA .
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS, 1991, 96 (B2) :2249-2265
[7]  
Chen W.-P., 1988, Seismological Research Letters, V59, P263
[8]   WHY LARGE EARTHQUAKES DO NOT NUCLEATE AT SHALLOW DEPTHS [J].
DAS, S ;
SCHOLZ, CH .
NATURE, 1983, 305 (5935) :621-623
[9]  
DEWEY JW, 1989, MEM GEOL SOC AM, V172, P541
[10]  
HENKEL H, 1988, 8807 SWED NUCL FUEL