Publication Date:
2018-01-27
Description:
The oblique-thrust Kaikoura earthquake of Mw 7.8 that struck New Zealand on 13 November 2016 at 11:02:56 UTC (local time at 00:02:56 AM on 14 November 2016), was one of the most geometrically and tectonically complex earthquakes recorded over land in modern seismology. The event ruptured in the region of multi-segmented faults and propagated unilaterally northeastward for more than 170 km from the epicenter. The GPS derived co-seismic surface displacements reveal a larger widespread horizontal and vertical co-seismic surface offsets of ~6m and ~2m respectively with two distinct tectonic thrust zones. We characterize the seismic induced ionospheric perturbations based on non-tectonic forcing mechanisms and demonstrate that these acoustic wave originated perturbations are mainly linked to the demarcated two distinct surface thrust directions with horizontal reinforcement trending the rupture rather than only to the displacements oriented in the rupture propagation.
Print ISSN:
0148-0227
Topics:
Geosciences
,
Physics
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