Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL090206 |
Space imaging geodesy reveals near circular, coseismic block rotation during the 2016 Mw7.8 Kaikōura earthquake, New Zealand | |
Teng Wang; Liqing Jiao; Paul Tapponnier; Xuhua Shi; Shengji Wei | |
2020-11-09 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | Large earthquakes usually rupture plate boundary faults, releasing the accumulated stress as displacements localized along smooth, narrow faults. However, certain earthquakes initiate off main faults, rupturing adjacent, secondary faults. The mechanisms of such atypical stress release remain enigmatic, partly due to a lack of detailed geodetic evidence. Here, using the 3D coseismic displacement field derived from space imaging geodesy, we detect ten‐kilometer‐scale, nearly‐circular coseismic block rotation during the 2016 Mw 7.8 Kaikōura earthquake in New Zealand. Together, geodetic observations, longer‐term local paleo‐magnetic data, analytical and discrete element modeling imply that localized block rotation occurred south of the Hope fault along weak, steep, bedding‐parallel boundaries within a narrow, ~20‐kilometer‐wide dextral shear zone. That stress along plate boundary faults can be partially released in zones of distributed ruptures absorbing coseismic rotation may retard rupture along main faults. Our observations also suggest that coseismic rotation may help adjust plate boundary propagation. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/303960 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Teng Wang,Liqing Jiao,Paul Tapponnier,et al. Space imaging geodesy reveals near circular, coseismic block rotation during the 2016 Mw7.8 Kaikōura earthquake, New Zealand[J]. Geophysical Research Letters,2020. |
APA | Teng Wang,Liqing Jiao,Paul Tapponnier,Xuhua Shi,&Shengji Wei.(2020).Space imaging geodesy reveals near circular, coseismic block rotation during the 2016 Mw7.8 Kaikōura earthquake, New Zealand.Geophysical Research Letters. |
MLA | Teng Wang,et al."Space imaging geodesy reveals near circular, coseismic block rotation during the 2016 Mw7.8 Kaikōura earthquake, New Zealand".Geophysical Research Letters (2020). |
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