SAHKE experiment reveals seismic-reflection character of the source region of deep slow slip events, Hikurangi subduction zone, New Zealand
Abstract
Active-source seismic-reflection data collected using an 8 km streamer and a network of onshore stations and ocean-bottom seismometers reveal a packet of strong reflections from the region of the subduction interface that slipped during the 2008 Kapiti slow-slip event. Reflections originate from a region of down-dip transition from the locked interface beneath Wellington (<30 km) to an inferred slipping region at depths >40 km. We present a preliminary analysis of observations and note similarities to reflective packages found at shallow depths (10-20 km) farther north at the Hikurangi margin, where locking is inferred to be much shallower (<15 km).
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2010
- Bibcode:
- 2010AGUFM.T51D2079S
- Keywords:
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- 8170 TECTONOPHYSICS / Subduction zone processes