Sensitivity of stress inversion of focal mechanisms to pore pressure changes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F16%3A00463543" target="_blank" >RIV/67985530:_____/16:00463543 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1002/2016GL070145" target="_blank" >http://dx.doi.org/10.1002/2016GL070145</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/2016GL070145" target="_blank" >10.1002/2016GL070145</a>
Alternative languages
Result language
angličtina
Original language name
Sensitivity of stress inversion of focal mechanisms to pore pressure changes
Original language description
We investigate the sensitivity of stress inversion from focal mechanisms to pore pressure changes. Synthetic tests reveal that pore pressure variations can cause apparent changes in the retrieved stress ratio R relating the magnitude of the intermediate principal stress with respect to the maximum and minimum principal stresses. Pore pressure and retrieved R are negatively correlated when R is low (R<0.6). The spurious variations in retrieved R are suppressed when R>0.6. This observation is independent of faulting style, and it may be related to different performance of the fault plane selection criterion and variability in orientation of activated faults under different pore pressures. Our findings from synthetic data are supported by results obtained from induced seismicity at The Geysers geothermal field. Therefore, the retrieved stress ratio variations can be utilized for monitoring pore pressure changes at seismogenic depth in stress domains with overall low R.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DC - Seismology, volcanology and Earth structure
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Geophysical Research Letters
ISSN
0094-8276
e-ISSN
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Volume of the periodical
43
Issue of the periodical within the volume
16
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
8441-8450
UT code for WoS article
000384443800014
EID of the result in the Scopus database
2-s2.0-84983440063