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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

  • Czech description

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

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

  • 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