气候变化领域集成服务门户(CCPortal): Upper Plate Heterogeneity Along the Southern Hikurangi Margin; New Zealand

CCPortal

DOI	10.1029/2019GL085511
	Upper Plate Heterogeneity Along the Southern Hikurangi Margin; New Zealand
	Henrys S.; Eberhart-Phillips D.; Bassett D.; Sutherland R.; Okaya D.; Savage M.; Evanzia D.; Stern T.; Sato H.; Mochizuki K.; Iwasaki T.; Kurashimo E.; Seward A.; Wech A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:4
英文摘要	Controlled and natural source seismic data are used to build a 3-D P wave model for southern North Island, New Zealand, where the Pacific Plate subducts beneath the Australian Plate at a rate of ~41 mm/year. Our analysis reveals an abrupt along-strike transition in overthrusting plate structure within Cook Strait. Contrasts in properties (Vp, Vp/Vs, and Qs) likely reflects the degree of deformation in the Australian Plate, where the Alpine-Wairau and Awatere Faults mark the northern boundary of a terrane that has undergone >50° of clockwise vertical-axis rotation since the early Miocene. Heterogeneity of the crustal transition is likely associated with changes in frictional and elastic properties that may impact elastic stress accumulation and inhibit southward propagation of megathrust earthquakes. Low connectivity of faults in Cook Strait is consistent with the heterogeneity we observe and may promote complex earthquake triggering by lateral stress loading during earthquakes or slow slip events. © 2020. The Authors.
英文关键词	Earthquakes; Plates (structural components); Seismic waves; Degree of deformations; Earthquake triggering; Elastic properties; Megathrust earthquakes; Natural sources; Plate structure; Slow slip events; Vertical-axis rotation; Fault slips; Australian plate; connectivity; deformation; earthquake trigger; elastic property; friction; heterogeneity; Miocene; P-wave; seismic data; slip; three-dimensional modeling; thrust; wave modeling; Cook Strait; Hikurangi Margin; New Zealand; North Island; Pacific Ocean
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170709
作者单位	GNS Science, Lower Hutt, New Zealand; School of Geography, Environment and Earth Sciences, Victoria University of Wellington, Wellington, New Zealand; Department of Earth sciences, University of Southern California, Los Angeles, CA, United States; Earthquake Research Institute, University of Tokyo, Tokyo, Japan; Volcano Science Center, U.S. Geological Survey, Anchorage, AK, United States
推荐引用方式 GB/T 7714	Henrys S.,Eberhart-Phillips D.,Bassett D.,et al. Upper Plate Heterogeneity Along the Southern Hikurangi Margin; New Zealand[J],2020,47(4).
APA	Henrys S..,Eberhart-Phillips D..,Bassett D..,Sutherland R..,Okaya D..,...&Wech A..(2020).Upper Plate Heterogeneity Along the Southern Hikurangi Margin; New Zealand.Geophysical Research Letters,47(4).
MLA	Henrys S.,et al."Upper Plate Heterogeneity Along the Southern Hikurangi Margin; New Zealand".Geophysical Research Letters 47.4(2020).