Shear and tensile earthquakes caused by fluid injection
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F11%3A10106075" target="_blank" >RIV/00216208:11310/11:10106075 - isvavai.cz</a>
Result on the web
<a href="http://www.agu.org/pubs/crossref/2011/2010GL045447.shtml" target="_blank" >http://www.agu.org/pubs/crossref/2011/2010GL045447.shtml</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1029/2010GL045447" target="_blank" >10.1029/2010GL045447</a>
Alternative languages
Result language
angličtina
Original language name
Shear and tensile earthquakes caused by fluid injection
Original language description
We apply rock mechanics concepts to the seismological observations in order to explain why during hydraulic injection some events display tensile and some shear deformation. The presence of non-shear components depends on the differential stress and thefracture orientation with respect to the s1 direction. Provided the slip vector is parallel to the traction we define four types of earthquakes according to the ratio of the shear and tensile components. Assuming a Griffith failure envelope, hybrid events containing both shear and tensile components can occur for fractures striking within 22.5o of s1. We argue that pure tensile fractures striking parallel to s1 are unlikely in the presence of natural fractures. The low shear traction of tensile events also implies their small stress drops. By applying the analysis to two different data sets, Soultzsous- Forets and Cotton Valley, we show that different orientations of natural fractures and differential stress in the targeted formations m
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
<a href="/en/project/IAA300120905" target="_blank" >IAA300120905: Dynamics of crustal fluids in the western part of the Bohemian Massif as a probe of the stress changes</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2011
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 Letteres
ISSN
0094-8276
e-ISSN
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Volume of the periodical
38
Issue of the periodical within the volume
113
Country of publishing house
US - UNITED STATES
Number of pages
4
Pages from-to
"L05307", 1-4
UT code for WoS article
000288327900001
EID of the result in the Scopus database
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