Nearby fault interaction within the double-vergence suture in eastern Taiwan during the 2022 Chihshang earthquake sequence

Abstract Nearby faults interact through stress changes induced by fault slip and viscoelastic flow. The process is, however, often elusive can be geometry-dependent time-variant. Here, we combine geodetic field observations to characterize the interaction of two head-to-head, conjugate in eastern Taiwan during 2022 Chihshang earthquake sequence. We map coseismic on Central Range dynamically-triggered shallow Longitudinal Valley fault, which has been creeping interseismically. Overlapping seismic aseismic suggests that is capable hosting a variety distinct behaviors. Moreover, substantial suppresses Coulomb vice versa, resulting bursts an out-of-phase pattern as seen hundred-year historical records. Such implies need for time-dependent hazard reassessment complex system.