Fast Determination of Attenuation From Microseismicity for Large Datasets

0510926 - ÚSMH 2020 RIV CZ eng J - Článek v odborném periodiku
Wcislo, Milosz - Eisner, L.
Fast Determination of Attenuation From Microseismicity for Large Datasets.
Acta geodynamica et geomaterialia. Roč. 16, č. 3 (2019), s. 257-268. ISSN 1214-9705. E-ISSN 2336-4351
Institucionální podpora: RVO:67985891
Klíčová slova: Seismic attenuation * Body waves * Induced seismicity * Fourier analysis
Obor OECD: Geology
Impakt faktor: 1.227, rok: 2019
Způsob publikování: Open access
https://www.irsm.cas.cz/materialy/acta_content/2019_doi/Wcislo_AGG_2019_0022.pdf

We develop a robust and automatic determination of peak frequencies of direct wave arrivals from microseismic events using mirror image of the recorded signal. These peak frequencies can be then used to evaluate attenuation quality factor (Q). We propose to use procedure that consists of automatic determination of the peak frequencies in combination with matched filter to facilitate selection of suitable events. Using both natural and induced seismicity datasets, we show that matched filter detection along with automatic determination of the peak frequencies gives consistent values of quality factor when compared with manual processing. Proposed technique significantly reduces processing time making it a suitable tool in attenuation analysis of large datasets.
Trvalý link: http://hdl.handle.net/11104/0301287