Determination of locations of local and regional earthquakes by grid search methods
PAMUKKALE UNIVERSITY JOURNAL OF ENGINEERING SCIENCES-PAMUKKALE UNIVERSITESI MUHENDISLIK BILIMLERI DERGISI, vol.27, no.3, pp.394-410, 2021 (ESCI, TRDizin)
- Publication Type: Article / Article
- Volume: 27 Issue: 3
- Publication Date: 2021
- Doi Number: 10.5505/pajes.2020.69922
- Journal Name: PAMUKKALE UNIVERSITY JOURNAL OF ENGINEERING SCIENCES-PAMUKKALE UNIVERSITESI MUHENDISLIK BILIMLERI DERGISI
- Journal Indexes: Emerging Sources Citation Index (ESCI), TR DİZİN (ULAKBİM)
- Page Numbers: pp.394-410
- Keywords: Grid search method, Hyposantr, Epicenter, Earthquake Location problem, Eastern black sea Earthquakes, HYPOCENTER
- Open Archive Collection: AVESIS Open Access Collection
- Karadeniz Technical University Affiliated: No
Abstract
In this study, "Grid Search method" has been examined for both its efficiency and capability in solving earthquake location problems even if various situations. For this reason, three simulated (or artificial) seismic networks that pose different station geometries have been investigated effects of the network geometry on the solution. Three cases in which earthquakes occurred in, near. and far from the networks have been also considered in this study. In addition, the effectiveness of the method has been examined in cases where the seismic velocity is incorrect, origin time is misdetermined and data is contained errors. The method has been applied on 54 real earthquakes, which both Pg and Sg phase readings are available, that occurred near the coast of the Eastern Black Sea and have been previously located by the Seismological Centers and obtained results have been compared with the previous results. It has been found that the most earthquake hypocenters determined by this method were close to the locations determined by the classic methods.