Seismological evidence for a multifault network at the subduction interface.

ABSTRACT: Subduction zones generate the largest earthquakes on Earth, yet their detailed structure, and its influence on seismic and aseismic slip, remains poorly understood. Geological studies of fossil subduction zones characterize the seismogenic interface as a 100 m-1 km thick zone^1-3 in which deformation occurs mostly on metres-thick faults^1,3-6. Conversely, seismological studies, with their larger spatial coverage and temporal resolution but lower spatial resolution, often image the seismogenic interface as a kilometres-wide band of seismicity⁷. Thus, how and when these metre-scale structures are active at the seismic-cycle timescale, and what influence they have on deformation is not known. Here we detect these metres-thick faults with seismicity and show thei

SUBMITTER: Chalumeau C 

PROVIDER: S-EPMC11023936 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature