Transient fault slip in Guerrero, southern Mexico

被引:157
作者
Lowry, AR [1 ]
Larson, KM
Kostoglodov, V
Bilham, R
机构
[1] Univ Colorado, Dept Phys, Boulder, CO 80309 USA
[2] Univ Colorado, Dept Geol Sci, Boulder, CO 80309 USA
[3] Univ Colorado, Dept Aerosp Engn, Boulder, CO 80309 USA
[4] Natl Autonomous Univ Mexico, Inst Geofis, Mexico City 04510, DF, Mexico
关键词
D O I
10.1029/2001GL013238
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
The Guerrero region of southern Mexico has accumulated more than 5 m of relative plate motion since the last major earthquake. In early 1998, a continuous CPS site in Guerrero recorded a transient displacement. Modeling indicates that anomalous fault slip propagated from east to west along-strike of the subduction megathrust. Campaign GPS and leveling data corroborate the model. The moment release was equivalent to an M(w)greater than or equal to6.5 earthquake. No M >5 earthquakes accompanied the event, indicating the frictional regime is velocity-strengthening at the location of slip.
引用
收藏
页码:3753 / 3756
页数:4
相关论文
共 15 条
  • [1] BOUCHER C, 1999, 27 IERS
  • [2] EFFECT OF RECENT REVISIONS TO THE GEOMAGNETIC REVERSAL TIME-SCALE ON ESTIMATES OF CURRENT PLATE MOTIONS
    DEMETS, C
    GORDON, RG
    ARGUS, DF
    STEIN, S
    [J]. GEOPHYSICAL RESEARCH LETTERS, 1994, 21 (20) : 2191 - 2194
  • [3] A silent slip event on the deeper Cascadia subduction interface
    Dragert, H
    Wang, KL
    James, TS
    [J]. SCIENCE, 2001, 292 (5521) : 1525 - 1528
  • [4] GORDEEV E, 2000, EOS T AGU, V81, pF331
  • [5] HUTTON W, 2001, IN PRESS GEOPHYS J I
  • [6] Gravity and seismicity over the Guerrero seismic gap, Mexico
    Kostoglodov, V
    Bandy, W
    Dominguez, J
    Mena, M
    [J]. GEOPHYSICAL RESEARCH LETTERS, 1996, 23 (23) : 3385 - 3388
  • [7] RELATIONSHIP BETWEEN SUBDUCTION AND SEISMICITY IN THE MEXICAN PART OF THE MIDDLE AMERICA TRENCH
    KOSTOGLODOV, V
    PONCE, L
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 1994, 99 (B1) : 729 - 742
  • [8] Elastodynamic analysis for slow tectonic loading with spontaneous rupture episodes on faults with rate- and state-dependent friction
    Lapusta, N
    Rice, JR
    Ben-Zion, Y
    Zheng, GT
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 2000, 105 (B10) : 23765 - 23789
  • [9] STRATEGIES FOR HIGH-PRECISION GLOBAL POSITIONING SYSTEM ORBIT DETERMINATION
    LICHTEN, SM
    BORDER, JS
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS, 1987, 92 (B12): : 12751 - 12762
  • [10] A slow earthquake sequence on the San Andreas fault
    Linde, AT
    Gladwin, MT
    Johnston, MJS
    Gwyther, RL
    Bilham, RG
    [J]. NATURE, 1996, 383 (6595) : 65 - 68