HR: 0800h
AN: T21B-0467    [Abstracts]
TI: Fault Loading Variations From Repeating Earthquakes Along the San Andreas and Calaveras Faults
AU: * Templeton, D
EM: dennise@seismo.berkeley.edu
AF: Berkeley Seismological Laboratory, 215 McCone Hall, MC4760, Berkeley, CA 94720-4760 United States
AU: Traer, M
EM: mtraer@seismo.berkeley.edu
AF: Berkeley Seismological Laboratory, 215 McCone Hall, MC4760, Berkeley, CA 94720-4760 United States
AU: Nadeau, R
EM: nadeau@seismo.berkeley.edu
AF: Berkeley Seismological Laboratory, 215 McCone Hall, MC4760, Berkeley, CA 94720-4760 United States
AU: Burgmann, R
EM: burgmann@seismo.berkeley.edu
AF: Berkeley Seismological Laboratory, 215 McCone Hall, MC4760, Berkeley, CA 94720-4760 United States
AB: We identify characteristically repeating earthquake sequences along the San Andreas and Calaveras Faults up to and including the Sargent Fault to the north and the Paicines Fault to the south to better understand fault zone loading variations at individual sequence locations. We investigate the time evolution of repeating earthquake sequences to determine the affects of nearby and distant large earthquakes on recurrence intervals between events in individual sequences. Using relocated seismicity we are also able to identify how larger earthquakes and apparent slow earthquakes relate spatially to the repeating earthquake sequences. Additionally, we study moment variations in space and time for repeating earthquakes. Assuming that characteristically repeating earthquakes are asperities surrounded by an actively creeping fault patch, we determine the minimum amount of creep necessary during the observation period to produce the observed repeating earthquake sequences using an empirically derived relationship between moment and cumulative slip at the sequence location.
DE: 7223 Earthquake interaction, forecasting, and prediction (1217, 1242)
DE: 7250 Transform faults
DE: 7299 General or miscellaneous
SC: Tectonophysics [T]
MN: Fall Meeting 2005