Record details

Title
    Velocity ratio variations in the source region of earthquake swarms in NW Bohemia obtained from arrival time double-differences
Author
    Dahm, T.
    Fischer, Tomáš
Language
    anglicky
Publication type
    článek v odborném periodiku
Source title - serial
    Geophysical Journal International
Vol./nr.
    Roč. 196, č. 2
Pages
    s. 957-970
Year
    2014
Notes
    Rozsah: 14 s.
Subject category
    earthquake source observations
    tomography
    volcano seismology
Keyword
    Arrival
    Bohemia
    Double-differences
    Earthquake
    NW
    Obtained
    Ratio
    Region
    Source
    Swarms
    Time
    Variations
    Velocity
Abstract (in english)
   Crustal earthquake swarms are an expression of intensive cracking and rock damaging over periods of days, weeks or month in a small source region in the crust. They are caused by longer lasting stress changes in the source region. Often, the localized stressing of the crust is associated with fluid or gas migration, possibly in combination with pre-existing zones of weaknesses. However, verifying and quantifying localized fluid movement at depth remains difficult since the area affected is small and geophysical prospecting methods often cannot reach the required resolution.
Contributor
    AV ČR Brno, Geofyzikální ústav
Contributor code
    AV ČR, GFÚ
Source format
    U
Import date
    23. 10. 2014