Two regions of seafloor deformation generated the tsunami for the 13 November 2016, Kaikoura, New Zealand earthquake
Abstract The 13 November 2016 Kaikoura, New Zealand, Mw 7.8 earthquake ruptured multiple crustal faults in the transpressional Marlborough and North Canterbury tectonic domains of northeastern South Island. The Hikurangi trench and underthrust Pacific slab terminate in the region south of Kaikoura,...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2017-07-01
|
| Series: | Geophysical Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/2017GL073717 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849725371286552576 |
|---|---|
| author | Yefei Bai Thorne Lay Kwok Fai Cheung Lingling Ye |
| author_facet | Yefei Bai Thorne Lay Kwok Fai Cheung Lingling Ye |
| author_sort | Yefei Bai |
| collection | DOAJ |
| description | Abstract The 13 November 2016 Kaikoura, New Zealand, Mw 7.8 earthquake ruptured multiple crustal faults in the transpressional Marlborough and North Canterbury tectonic domains of northeastern South Island. The Hikurangi trench and underthrust Pacific slab terminate in the region south of Kaikoura, as the subdution zone transitions to the Alpine fault strike‐slip regime. It is difficult to establish whether any coseismic slip occurred on the megathrust from on‐land observations. The rupture generated a tsunami well recorded at tide gauges along the eastern coasts and in Chatham Islands, including a ~4 m crest‐to‐trough signal at Kaikoura where coastal uplift was about 1 m, and at multiple gauges in Wellington Harbor. Iterative modeling of teleseismic body waves and the regional water‐level recordings establishes that two regions of seafloor motion produced the tsunami, including an Mw ~7.6 rupture on the megathrust below Kaikoura and comparable size transpressional crustal faulting extending offshore near Cook Strait. |
| format | Article |
| id | doaj-art-e647200b63b8419ca77bdec4ea704382 |
| institution | DOAJ |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2017-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-e647200b63b8419ca77bdec4ea7043822025-08-20T03:10:28ZengWileyGeophysical Research Letters0094-82761944-80072017-07-0144136597660610.1002/2017GL073717Two regions of seafloor deformation generated the tsunami for the 13 November 2016, Kaikoura, New Zealand earthquakeYefei Bai0Thorne Lay1Kwok Fai Cheung2Lingling Ye3Department of Ocean and Resources Engineering University of Hawaii at Manoa Honolulu Hawaii USADepartment of Earth and Planetary Sciences University of California Santa Cruz Santa Cruz California USADepartment of Ocean and Resources Engineering University of Hawaii at Manoa Honolulu Hawaii USASeismological Laboratory, California Institute of Technology Pasadena California USAAbstract The 13 November 2016 Kaikoura, New Zealand, Mw 7.8 earthquake ruptured multiple crustal faults in the transpressional Marlborough and North Canterbury tectonic domains of northeastern South Island. The Hikurangi trench and underthrust Pacific slab terminate in the region south of Kaikoura, as the subdution zone transitions to the Alpine fault strike‐slip regime. It is difficult to establish whether any coseismic slip occurred on the megathrust from on‐land observations. The rupture generated a tsunami well recorded at tide gauges along the eastern coasts and in Chatham Islands, including a ~4 m crest‐to‐trough signal at Kaikoura where coastal uplift was about 1 m, and at multiple gauges in Wellington Harbor. Iterative modeling of teleseismic body waves and the regional water‐level recordings establishes that two regions of seafloor motion produced the tsunami, including an Mw ~7.6 rupture on the megathrust below Kaikoura and comparable size transpressional crustal faulting extending offshore near Cook Strait.https://doi.org/10.1002/2017GL073717EarthquakeTsunamiHikurangi subduction zone |
| spellingShingle | Yefei Bai Thorne Lay Kwok Fai Cheung Lingling Ye Two regions of seafloor deformation generated the tsunami for the 13 November 2016, Kaikoura, New Zealand earthquake Geophysical Research Letters Earthquake Tsunami Hikurangi subduction zone |
| title | Two regions of seafloor deformation generated the tsunami for the 13 November 2016, Kaikoura, New Zealand earthquake |
| title_full | Two regions of seafloor deformation generated the tsunami for the 13 November 2016, Kaikoura, New Zealand earthquake |
| title_fullStr | Two regions of seafloor deformation generated the tsunami for the 13 November 2016, Kaikoura, New Zealand earthquake |
| title_full_unstemmed | Two regions of seafloor deformation generated the tsunami for the 13 November 2016, Kaikoura, New Zealand earthquake |
| title_short | Two regions of seafloor deformation generated the tsunami for the 13 November 2016, Kaikoura, New Zealand earthquake |
| title_sort | two regions of seafloor deformation generated the tsunami for the 13 november 2016 kaikoura new zealand earthquake |
| topic | Earthquake Tsunami Hikurangi subduction zone |
| url | https://doi.org/10.1002/2017GL073717 |
| work_keys_str_mv | AT yefeibai tworegionsofseafloordeformationgeneratedthetsunamiforthe13november2016kaikouranewzealandearthquake AT thornelay tworegionsofseafloordeformationgeneratedthetsunamiforthe13november2016kaikouranewzealandearthquake AT kwokfaicheung tworegionsofseafloordeformationgeneratedthetsunamiforthe13november2016kaikouranewzealandearthquake AT linglingye tworegionsofseafloordeformationgeneratedthetsunamiforthe13november2016kaikouranewzealandearthquake |