Global ETD Search

1	Microseismic event location and passive seismic imaging of crustal structures Hassani, Hossein 08 August 2019 (has links) This research is aimed to develop a migration-based earthquake location algorithm and a passive seismic imaging approach to investigate microseismicity and image steep crustal structures in the mining area Schlema-Alberoda. The dataset includes single-component records of several microseismic events which occurred between 1998 and 2012 in the area. Through some tests and comparisons, the accuracy of the localization algorithm is proved. An expected extension of pre-existing faults within the granitic body and the connection between some of the structures is comfirmed by the location results. The passive imaging procedure is conducted using only P-wave secondary arrivals from the relocated events and by applying 3-D coherency migration. The reliability of the passive imaging results is verified by comparing the final image with the results of a 3-D active reflection seismic survey in the same area. In addition, the passive image complements the 3-D active image and reveals new structures that have not been imaged previously. Microseismicity, Passive Seismic Imaging Mikroseismizität info:eu-repo/classification/ddc/550 ddc:550 Erzgebirge Erdbebenbelastung Induzierte Seismizität Kristallin Messstellennetz Mikroseismik Erzgebirge <West> Schlema Erdkruste Geologie Kristallines Gestein Granit Tektonik Seismologie