Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8908691 | Tectonophysics | 2018 | 30 Pages |
Abstract
We apply a back-projection analysis to determine the locations and timing of the sources of short-period (0.5 to 2â¯s) energy generated by the 13 November 2016 Mw 7.8 Kaikoura, New Zealand earthquake using data from Australian and Southeast Asia. The sources of strong short-period energy are distributed northeast of the epicenter at distances of 70 to 80â¯km during the time period of 70 to 80â¯s after the initiation. The locations of sources of long-period energy derived from global seismic and local GPS data are close to the northeastern edge of the source area, and complementary to the areas of short-period energy which occur in the converging region of the Upper Kowhal, Papatea, and Jordan Thrust faults. The obvious frequency dependence might be attributed to complexities in fault geometry, possible rupture in the subduction interface, or varying focal mechanisms during the earthquake.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Earth-Surface Processes
Authors
Dun Wang, Yunguo Chen, Qi Wang, Jim Mori,