Aseismic slip and fault interaction from repeating earthquakes in the Loma Prieta aftershock zone

摘要: [1] Along creeping sections of the San Andreas and other faults, small asperities in fault zone load fail characteristic repeating earthquake sequences which can be used as subsurface creepmeters. Here, we use these virtual creepmeters to examine compare deep slip rates on both northwestern end section Fault near Juan Bautista nearby subparallel Sargent Fault. While creep increased dramatically due static stress changes response 1989 Loma Prieta earthquake, showed very little immediate response, consistent with finite models that put this a region less than 3 bar Coulomb increase. After about 10 years, rate fell back close interseismic rate, variations became coherent time Sargent, indicating mutual driving force system.