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Broadband analysis of the 21 September, 1993 Klamath Falls Earthquake Sequence
Author(s) -
Dreger Douglas,
Ritsema Jeroen,
Pasyanos Michael
Publication year - 1995
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/95gl00566
Subject(s) - seismology , geology , seismogram , sequence (biology) , broadband , p wave , seismometer , geodesy , telecommunications , genetics , biology , medicine , computer science , cardiology , atrial fibrillation
The source characteristics of the Klamath Falls earthquake sequence were estimated from broadband seismograms recorded by the Berkeley Digital Seismic Network (BDSN), TERRAscope, and western United States IRIS stations. Solutions were obtained for events ranging in size from M w 3.8 to M w 6.0. An empirical Green's function inverse approach was used to estimate kinematic source parameters of the two M w 6.0 mainshocks. Both events were found to have ruptured northwest on adjacent segments of the Lake of the Woods system of normal faults. The two main‐shocks abut where there is a pronounced 10° to 20° clockwise rotation of strike which may have initially acted as a barrier to a through‐going M w 6.2 event.