Accurate moment tensor inversion of acoustic emissions and its application to Brazilian splitting test
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F21%3A00542815" target="_blank" >RIV/67985530:_____/21:00542815 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S1365160921000939" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1365160921000939</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijrmms.2021.104707" target="_blank" >10.1016/j.ijrmms.2021.104707</a>
Alternative languages
Result language
angličtina
Original language name
Accurate moment tensor inversion of acoustic emissions and its application to Brazilian splitting test
Original language description
The efficiency of three inversions for accurate moment tensors: (1) the standard least-squares inversion, (2) the weighted least-squares inversion, and (3) the shear-tensile-compressive (STC) source inversion, is tested on acoustic emissions (AEs) produced during the Brazilian splitting test. A comparison of plots of the P/T axes of the focal mechanisms reveals that the double-couple part of the moment tensors is well constrained for all three inversions. By contrast, diamond source-type plots show that the non-double-couple components of the retrieved moment tensors are more sensitive to errors due to neglecting inhomogeneities and anisotropy in the rock sample, near-field terms and other wave phenomena effects. The weighted inversion and the STC inversion work better than the standard least-squares method and yield less scattered results. If moment tensors of AEs contain significant non-double-couple components of moment tensors produced by non-shear fracturing, the STC inversion proved to be most accurate. The retrieved moment tensors are well consistent with the expected fracture mechanism of AEs in the Brazilian splitting specimen and provide a further guidance for studying rock fracture processes.
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
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Journal of Rock Mechanics and Mining Sciences
ISSN
1365-1609
e-ISSN
1873-4545
Volume of the periodical
141
Issue of the periodical within the volume
May
Country of publishing house
GB - UNITED KINGDOM
Number of pages
9
Pages from-to
104707
UT code for WoS article
000643671300002
EID of the result in the Scopus database
2-s2.0-85103308585