Frequency-dependent moment tensors of induced microearthquakes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F19%3A00507597" target="_blank" >RIV/67985530:_____/19:00507597 - isvavai.cz</a>
Result on the web
<a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019GL082634" target="_blank" >https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019GL082634</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1029/2019GL082634" target="_blank" >10.1029/2019GL082634</a>
Alternative languages
Result language
angličtina
Original language name
Frequency-dependent moment tensors of induced microearthquakes
Original language description
Analysis of 984 induced microearthquakes from The Geysers geothermal reservoir in California reveals that the retrieved moment tensors depend on the frequency band of the inverted waveforms. The observed dependence is more significant for the percentages of the double-couple, compensated linear vector dipole, and isotropic (ISO) components than for the focal mechanisms. The average root-mean-square of the moment tensors obtained in different frequency bands is correlated with spectra of ambient noise. The percentages of double-couple and ISO components tend to decrease and increase with the upper cutoff frequency (f(u)), respectively. This suggests that shear rupture radiates energy preferentially in a lower frequency band and tensile rupture in a higher frequency band. Events displaying a strong increase of the ISO with f(u) are confined within the same depth interval as the injection points. This might be related to the strong thermoelastic effects in the vicinity of injection points that promote opening of small cracks adjacent to the main fractures.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10507 - Volcanology
Result continuities
Project
<a href="/en/project/GA19-06422S" target="_blank" >GA19-06422S: Joint inversion for seismic moment tensors and Green’s functions</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
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
46
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
6406-6414
UT code for WoS article
000477616300029
EID of the result in the Scopus database
2-s2.0-85068132059