Generating High-Fidelity Reflection Images Directly From Full-Waveform Inversion: Hikurangi Subduction Zone Case Study

Article Geochemistry & Geophysics

The many double BSRs across the northern Hikurangi margin and their implications for subduction processes

Shuoshuo Han et al.

Summary: The study presents observations of double bottom simulating reflections (BSRs) along the northern Hikurangi subduction margin in New Zealand, suggesting potential formation mechanisms including rapid sedimentation, tectonic uplift, and overpressure/heat advection caused by fluid migration.

EARTH AND PLANETARY SCIENCE LETTERS (2021)

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Article Geosciences, Multidisciplinary

Physical conditions and frictional properties in the source region of a slow-slip event

Adrien F. Arnulf et al.

Summary: Seismic imaging and data-constrained modelling reveal lateral variability in elastic properties and pore pressure, as well as near-velocity-neutral frictional properties in a shallow slow-slip source region along the Hikurangi subduction margin. The study suggests that fluid flow along thrust faults plays a crucial role in influencing mechanical properties and frictional stability along the subduction fault. This research also indicates that shallow subduction fault rocks must exhibit nearly velocity-neutral properties to generate shallow frictional slow slip events.

NATURE GEOSCIENCE (2021)

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Article Multidisciplinary Sciences