Record details

Title
    Moho depth retrieval from waveforms of microearthquakes in the West Bohemia/Vogtland seismoactive area
Author
    Boušková, Alena
    Horálek, Josef
    Hrubcová, Pavla
    Vavryčuk, Václav
Conference
    EAGE Conference & exhibition incorporationg SPE EUROPEC 2010 (74. : 04.06.2012-07.06.2012 : Copenhagen, Dánsko)
Language
    anglicky
Publication type
    konferenční příspěvek (zahraniční konference)
Source title - monograph
    74th EAGE conference & exhibition incorporating SPE EUROPEC 2012
Pages
    P256/1-P256/5
Notes
    Projekt: GAP210/10/2063, GA ČR3cav_un_auth*0263306
    Projekt: LM2010008, GA MŠk3cav_un_auth*0273783
    Rozsah: 5 s. : C
Subject category
    Moho depth
    waveform modelling
    West Bohemia/Vogtland
Keyword
    Area
    Bohemia/Vogtland
    Depth
    Microearthquakes
    Moho
    Retrieval
    Seismoactive
    Waveforms
    West
Abstract (in english)
   West Bohemia/Vogtland is the area of an increased geodynamic activity manifested by numerous mineral springs and CO2 emissions located at intersection of faults. The seismicity is characterized by reoccurrence of intraplate earthquake swarms with local magnitude mostly less than 4. Knowledge of a detailed crustal structure is essential for all advanced studies of seismicity and focal parameters of the micro-earthquakes. We concentrate on velocity model and Moho depth retrieval using waveforms of local micro-earthquakes that occurred during the 2008 swarm and were observed at the WEBNET seismic network stations. The waveforms typically display dominant direct P and S waves followed by converted and reflected waves secondarily generated at shallow and deep subsurface structure. Apart from velocity structure and source-receiver geometry the waveforms are significantly affected by focal mechanisms of the earthquakes.
   Therefore, the waveforms are processed separately for clusters of earthquakes with similar mechanism.
Contributor
    AV ČR Brno, Geofyzikální ústav
Contributor code
    AV ČR, GFÚ
Source format
    U
Import date
    9. 12. 2013