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Remote Triggering of Microearthquakes and Tremor in New Zealand following the 2016 Mw 7.8 Kaikōura Earthquake

2018; Seismological Society of America; Volume: 108; Issue: 3B Linguagem: Inglês

10.1785/0120170327

1943-3573

Zhigang Peng, Bill Fry, Kevin Chao, Dongdong Yao, Xiaofeng Meng, A. D. Jolly,

High-pressure geophysics and materials

Research Article| May 22, 2018 Remote Triggering of Microearthquakes and Tremor in New Zealand following the 2016 Mw 7.8 Kaikōura Earthquake Zhigang Peng; Zhigang Peng aSchool of Earth and Atmospheric Sciences, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, Georgia 30338, zpeng@gatech.edu Search for other works by this author on: GSW Google Scholar Bill Fry; Bill Fry bGNS Sciences, 1 Fairway Drive, Avalon 5010, PO Box 30‐368, Lower Hutt 5040, New Zealand Search for other works by this author on: GSW Google Scholar Kevin Chao; Kevin Chao cDepartment of Earth and Planetary Sciences, 2145 Sheridan Road, Room F374, Evanston, Illinois 60208 Search for other works by this author on: GSW Google Scholar Dongdong Yao; Dongdong Yao aSchool of Earth and Atmospheric Sciences, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, Georgia 30338, zpeng@gatech.edu Search for other works by this author on: GSW Google Scholar Xiaofeng Meng; Xiaofeng Meng dDepartment of Earth Sciences, University of Southern California, 3651 Trousdale Parkway , Los Angeles, California 90089 Search for other works by this author on: GSW Google Scholar Art Jolly Art Jolly bGNS Sciences, 1 Fairway Drive, Avalon 5010, PO Box 30‐368, Lower Hutt 5040, New Zealand Search for other works by this author on: GSW Google Scholar Author and Article Information Zhigang Peng aSchool of Earth and Atmospheric Sciences, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, Georgia 30338, zpeng@gatech.edu Bill Fry bGNS Sciences, 1 Fairway Drive, Avalon 5010, PO Box 30‐368, Lower Hutt 5040, New Zealand Kevin Chao cDepartment of Earth and Planetary Sciences, 2145 Sheridan Road, Room F374, Evanston, Illinois 60208 Dongdong Yao aSchool of Earth and Atmospheric Sciences, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, Georgia 30338, zpeng@gatech.edu Xiaofeng Meng dDepartment of Earth Sciences, University of Southern California, 3651 Trousdale Parkway , Los Angeles, California 90089 Art Jolly bGNS Sciences, 1 Fairway Drive, Avalon 5010, PO Box 30‐368, Lower Hutt 5040, New Zealand Publisher: Seismological Society of America First Online: 22 May 2018 Online Issn: 1943-3573 Print Issn: 0037-1106 © Seismological Society of America Bulletin of the Seismological Society of America (2018) 108 (3B): 1784–1793. https://doi.org/10.1785/0120170327 Article history First Online: 22 May 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Zhigang Peng, Bill Fry, Kevin Chao, Dongdong Yao, Xiaofeng Meng, Art Jolly; Remote Triggering of Microearthquakes and Tremor in New Zealand following the 2016 Mw 7.8 Kaikōura Earthquake. Bulletin of the Seismological Society of America 2018;; 108 (3B): 1784–1793. doi: https://doi.org/10.1785/0120170327 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyBulletin of the Seismological Society of America Search Advanced Search Abstract We conduct a systematic search for remotely triggered seismicity in New Zealand following the 2016 Mw 7.8 Kaikōura earthquake. We first examine seismicity rates obtained from the GeoNet catalog one month before and after the Kaikōura mainshock. We find a clear increase of microseismicity following the mainshock in the North Island, mostly along the shallow portion of the Hikurangi subduction zone, as well as surrounding and to the east of the Taupo volcanic zone (TVZ). We then examine high‐frequency seismic signals during and immediately following the large‐amplitude surface waves and identify instantaneously triggered events at several new sites. These include long‐duration tremor‐like signals in low‐strain‐rate regions around Auckland, near the source region of the 2009 Mw 7.9 Dusky Sound earthquake in the southern South Island and at several sites within and south of the TVZ. Triggered signals along the TVZ likely originated from multiple sources. A common feature of these instantaneous triggering sites is their close proximity to hot springs or elevated subsurface temperatures associated with active volcanoes or fault structures, suggesting that they may provide necessary conditions for remote dynamic triggering. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.