Non-volcanic tremor associated with the March 2010 Gisborne slow slip event at the Hikurangi subduction margin, New Zealand

In October 2002, a surface displacement episode of 20-30 mm magnitude was observed over a ∼10 day period on two continuous Global Positioning System (GPS) instruments near Gisborne, North Island, New Zealand. We interpret this to result from slow slip on the northern Hikurangi subduction interface. Using ten years of regional campaign GPS (1995-2004) and recent continuous GPS data, we estimate the recurrence interval for similar events to be 2-3 yrs. In November 2004, a similar slow slip event occurred within this recurrence period. The 2002 event can be modeled by ∼18 cm of slow slip near the down-dip end of the seismogenic zone on the subduction interface offshore of Gisborne. The campaign GPS data show that the 2002 slow slip event had little effect on regional strain patterns. Copyright 2005 by the American Geophysical Union.

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Simultaneous long-term and short-term slow slip events at the Hikurangi subduction margin, New Zealand: Implications for processes that control slow slip event occurrence, duration, and migration

Journal of Geophysical Research Atmospheres ◽

10.1029/2012jb009489 ◽

2012 ◽

Vol 117 (B11) ◽

pp. n/a-n/a ◽

Cited By ~ 98

Author(s):

Laura M. Wallace ◽

John Beavan ◽

Stephen Bannister ◽

Charles Williams

Keyword(s):

New Zealand ◽

Slow Slip ◽

Short Term ◽

Slow Slip Events ◽

Slow Slip Event ◽

Slip Event ◽

And Migration ◽

Event Occurrence

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Slow slip on the northern Hikurangi subduction interface, New Zealand

10.26686/wgtn.13819082.v1 ◽

2021 ◽

Author(s):

A Douglas ◽

J Beavan ◽

L Wallace ◽

John Townend

Keyword(s):

New Zealand ◽

Surface Displacement ◽

Seismogenic Zone ◽

Gps Data ◽

Slow Slip ◽

Slow Slip Event ◽

Slip Event ◽

American Geophysical ◽

Continuous Gps ◽

American Geophysical Union

In October 2002, a surface displacement episode of 20-30 mm magnitude was observed over a ∼10 day period on two continuous Global Positioning System (GPS) instruments near Gisborne, North Island, New Zealand. We interpret this to result from slow slip on the northern Hikurangi subduction interface. Using ten years of regional campaign GPS (1995-2004) and recent continuous GPS data, we estimate the recurrence interval for similar events to be 2-3 yrs. In November 2004, a similar slow slip event occurred within this recurrence period. The 2002 event can be modeled by ∼18 cm of slow slip near the down-dip end of the seismogenic zone on the subduction interface offshore of Gisborne. The campaign GPS data show that the 2002 slow slip event had little effect on regional strain patterns. Copyright 2005 by the American Geophysical Union.

Download Full-text