Moho depth determination from waveforms of microearthquakes in the West Bohemia/Vogtland swarm area

0390919 - GFÚ 2014 RIV US eng J - Journal Article
Hrubcová, Pavla - Vavryčuk, Václav - Boušková, Alena - Horálek, Josef
Moho depth determination from waveforms of microearthquakes in the West Bohemia/Vogtland swarm area.
Journal of Geophysical Research-Solid Earth. Roč. 118, č. 1 (2013), s. 120-137. ISSN 2169-9313. E-ISSN 2169-9356
R&D Projects: GA ČR GAP210/10/2063; GA AV ČR IAA300120801; GA MŠMT LM2010008
Institutional support: RVO:67985530
Keywords : microseismicity * Bohemian Massif * crustal structure
Subject RIV: DC - Siesmology, Volcanology, Earth Structure
Impact factor: 3.440, year: 2013

The West Bohemia/Vogtland area is known for its increased geodynamic activity with reoccurrence of intraplate earthquake swarms. Previous geophysical studies, namely active and passive seismic investigations, revealed a high velocity lower crust in this area with increased reflectivity. To refine this result and retrieve a more detailed structure of the deep crust and the Moho discontinuity, we analyzed waveforms of local microearthquakes that occurred in this area during the 2008 swarm. The waveforms of earthquakes were grouped into clusters with similar focal mechanisms, and the clusters were processed separately. We developed a new multiazimuthal approach in data processing to increase resolution of Moho phases in the waveforms.
Permanent Link: http://hdl.handle.net/11104/0219782