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Fracture network imaging on rock slope instabilities using resonance mode analysis

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F19%3A00508142" target="_blank" >RIV/67985530:_____/19:00508142 - isvavai.cz</a>

  • Result on the web

    <a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019GL083201" target="_blank" >https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019GL083201</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1029/2019GL083201" target="_blank" >10.1029/2019GL083201</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Fracture network imaging on rock slope instabilities using resonance mode analysis

  • Original language description

    We performed modal analysis using frequency domain decomposition of ambient seismic vibration data collected on large rock slope instabilities. This technique enables a robust detection of resonance frequencies and provides the corresponding mode shape vectors. We applied the technique to synthetic and field data sets acquired by seismometer arrays on two rock instabilities in Switzerland. We found that, at the fundamental mode, the entire instability vibrates in-phase with the dominant mode shape vector oriented perpendicular to dominant fracture systems. At higher frequencies, different compartments of the instability resonate antiphase. Therefore, delineating the zero crossings between the phases allows dominant fractures to be efficiently mapped. Approximately 1 hr of ambient vibration data suffices to apply the method successfully. The method also potentially detects hidden fractures that cannot be observed by geological field mapping. In addition, this approach combines classic amplification and polarization analysis into one technique, simplifying data processing efforts.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10507 - Volcanology

Result continuities

  • Project

  • 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

  • Volume of the periodical

    46

  • Issue of the periodical within the volume

    12

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    10

  • Pages from-to

    6497-6506

  • UT code for WoS article

    000477616300039

  • EID of the result in the Scopus database

    2-s2.0-85068388879