Shallow coseismic slip deficit due to large (M7) strike-slip earthquakes
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| Published in: | Геофизический журнал |
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| Date: | 2010 |
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| Format: | Article |
| Language: | English |
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Інститут геофізики ім. С.I. Субботіна НАН України
2010
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/101317 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Shallow coseismic slip deficit due to large (M7) strike-slip earthquakes / Y. Fialko // Геофизический журнал. — 2010. — Т. 32, № 4. — С. 47-48. — Бібліогр.: 7 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1860111898235633664 |
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| author | Fialko, Y. |
| author_facet | Fialko, Y. |
| citation_txt | Shallow coseismic slip deficit due to large (M7) strike-slip earthquakes / Y. Fialko // Геофизический журнал. — 2010. — Т. 32, № 4. — С. 47-48. — Бібліогр.: 7 назв. — англ. |
| collection | DSpace DC |
| container_title | Геофизический журнал |
| first_indexed | 2025-12-07T17:34:20Z |
| format | Article |
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Fig. 1. Coseismic slip model of the El Mayor earthquake derived from inversion of InSAR and GPS Figure data. Colors denote
the slip magnitude and arrows denote the sense of slip on the west side of the fault. Black circles denote precisely relocated
hypocenters of aftershocks from the time period of 2 months following the mainshock (courtesy of Egill Hauksson).
Fig. 2. Along-fault averaged distribution of slip for several large strike-slip earthquakes well constrained by the space
geodetic data [Fialko et al., 2005]. The slip distribution from the El Mayor earthquake (magenta curve) follows the general
pattern, with slip maximum in the middle of the seismogenic layer and shallow coseismic slip deficit.
Inversions of space geodetic data (in particular,
Interferometric Synthetic Aperture Radar and Glo-
bal Positioning System) from several large (moment
magnitude ~7) strike-slip earthquakes indicate that
coseismic slip in the middle of the seismogenic layer
(at depth of 4—5 km) is systematically larger than
slip at the Earth’s surface. Fig. 1 shows an exam-
ple of slip inversion from the April 4, 2010, M7.2 El
Mayor (Mexico) earthquake, and Fig. 2 shows a
compilation of slip inversions from severa well-do-
cumented events [Fialko et al., 2005], including our
recent results for the El Mayor earthquake.
Shallow coseismic slip deficit due to large (M7)
strike-slip earthquakes
Y. Fialko, 2010
Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography,
University of California San Diego, La Jolla, USA
yfialko@ucsd.edu
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Fialko Y., Sandwell D., Simons M., Rosen P. Three-
dimensional deformation caused by the Bam, Iran,
earthquake and the origin of shallow slip deficit //
Nature. — 2005. — 435. — P. 295—299.
Fielding E. J., Lundgren P. R., Burgmann R.,
Funning G. J. Shallow fault-zone dilatancy recovery
after the 2003 bam earthquake in iran // Nature. —
2009. — 458. — P. 64—68.
Jacobs A., Sandwell D., Fialko Y., Sichoix L. The
1999 (Mw 7.1) Hector Mine, California, earthquake:
Near-field postseismic deformation from ERS in-
terferometry // Bull. Seism. Soc. Amer. — 2002. —
92. — P. 1433—1442.
Marone C. Laboratory-derived friction laws and their
application to seismic faulting // Ann. Rev. Earth
Planet. Sci. — 1998. — 26. — P. 643—696.
Scholz C. H. Earthquakes and friction laws // Nature.
— 1998. — 391. — P. 37—42.
Fialko Y. Evidence of fluid-filled upper crust from ob-
servations of post-seismic deformation due to the
References
1992 Mw 7.3 Landers earthquake // J. Geophys.
Res. — 2004. — 109. — P. B08,401.
This decrease in slip toward the surface, termed
“shallow slip deficit”, appears to be consistent with the
idea that the uppermost brittle layer is velocity-
strengthening, as suggested by experimental data
[Marone, 1998; Scholz, 1998], there remain a ques-tion
of how the coseismic slip deficit is accomфmo-dated
throughout the earthquake cycle [Fialko et al., 2005]. To
the best of our knowledge, events in-cluded in Fig. 2
were not associated with either
shallow interseismic creep or robust shallow after-slip
(in the amount sufficient to remove the coseis-mic slip
deficit in the shallow crust) [Jacobs et al., 2002; Fialko,
2004; Fialko et al., 2005; Fielding et al., 2009]. We
explore a possibility that the shallow slip deficit is
associated with immature and/or infre-quently slipping
faults and is caused by the bulk inelastic yielding of
the host rocks in the shallow part of the brittle crust.
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| id | nasplib_isofts_kiev_ua-123456789-101317 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0203-3100 |
| language | English |
| last_indexed | 2025-12-07T17:34:20Z |
| publishDate | 2010 |
| publisher | Інститут геофізики ім. С.I. Субботіна НАН України |
| record_format | dspace |
| spelling | Fialko, Y. 2016-06-02T14:26:12Z 2016-06-02T14:26:12Z 2010 Shallow coseismic slip deficit due to large (M7) strike-slip earthquakes / Y. Fialko // Геофизический журнал. — 2010. — Т. 32, № 4. — С. 47-48. — Бібліогр.: 7 назв. — англ. 0203-3100 https://nasplib.isofts.kiev.ua/handle/123456789/101317 en Інститут геофізики ім. С.I. Субботіна НАН України Геофизический журнал Shallow coseismic slip deficit due to large (M7) strike-slip earthquakes Article published earlier |
| spellingShingle | Shallow coseismic slip deficit due to large (M7) strike-slip earthquakes Fialko, Y. |
| title | Shallow coseismic slip deficit due to large (M7) strike-slip earthquakes |
| title_full | Shallow coseismic slip deficit due to large (M7) strike-slip earthquakes |
| title_fullStr | Shallow coseismic slip deficit due to large (M7) strike-slip earthquakes |
| title_full_unstemmed | Shallow coseismic slip deficit due to large (M7) strike-slip earthquakes |
| title_short | Shallow coseismic slip deficit due to large (M7) strike-slip earthquakes |
| title_sort | shallow coseismic slip deficit due to large (m7) strike-slip earthquakes |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/101317 |
| work_keys_str_mv | AT fialkoy shallowcoseismicslipdeficitduetolargem7strikeslipearthquakes |