Recurrence of postseismic coastal uplift, Kuril subduction zone, Japan

Details Recurrence of postseismic coastal uplift, Kuril subduction zone, Japan Recurrence of postseismic coastal uplift, Kuril subduction zone, Japan

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3313315k&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 13, CiteID L13315

Physics

5

Geodesy And Gravity: Seismic Cycle Related Deformations (6924, 7209, 7223, 7230), Seismology: Paleoseismology (8036), Seismology: Subduction Zones (1207, 1219, 1240), Tectonophysics: Continental Margins: Convergent, Tectonophysics: Subduction Zone Processes (1031, 3060, 3613, 8413)

Scientific paper

Coastal stratigraphy of eastern Hokkaido indicates that decimeters of coastal uplift occurred repeatedly in the late Holocene. Employing radiocarbon dating and tephrochronology, we identify along a 100 km length of the Kuril subduction zone six uplift events since ~2,800 years B.P. Uplift events occur at the same frequency as unusually high tsunamis. Each coastal uplift event, which occurs on average every 500 years, is the product of decade-long post seismic deep slip on the down dip extension of the seismogenic plate boundary following an offshore multi-segment earthquake that generates unusually high tsunamis.

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