Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL074641 |
Mapping subduction interface coupling using magnetotellurics: Hikurangi margin, New Zealand | |
Heise, W.1; Caldwell, T. G.1; Bannister, S.1; Bertrand, E. A.1; Ogawa, Y.2; Bennie, S. L.1; Ichihara, H.3,4 | |
2017-09-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:18 |
文章类型 | Article |
语种 | 英语 |
国家 | New Zealand; Japan |
英文摘要 | The observation of slow-slip, seismic tremor, and low-frequency earthquakes at subduction margins has provided new insight into the mechanisms by which stress accumulates between large subduction (megathrust) earthquakes. However, the relationship between the physical properties of the subduction interface and the nature of the controls on interplate seismic coupling is not fully understood. Using magnetotelluric data, we show in situ that an electrically resistive patch on the Hikurangi subduction interface corresponds with an area of increased coupling inferred from geodetic data. This resistive patch must reflect a decrease in the fluid or sediment content of the interface shear zone. Together, the magnetotelluric and geodetic data suggest that the frictional coupling of this part on the Hikurangi margin may be controlled by the interface fluid and sediment content: the resistive patch marking a fluid- and sediment-starved area with an increased density of small, seismogenic-asperities, and therefore a greater likelihood of subduction earthquake nucleation. |
英文关键词 | magnetotellurics slow slip subduction plate coupling |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000413148100018 |
WOS关键词 | SLOW EARTHQUAKES ; NORTH-ISLAND ; SILENT SLIP ; ZONE ; CASCADIA ; RESISTIVITY ; PRESSURE ; FLUIDS ; TREMOR |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/26580 |
专题 | 气候变化 |
作者单位 | 1.GNS Sci, Lower Hutt, New Zealand; 2.Tokyo Inst Technol, Volcan Fluid Res Ctr, Tokyo, Japan; 3.Japan Agcy Marine Earth Sci & Technol, Inst Res Earth Evolut, Yokosuka, Kanagawa, Japan; 4.Nagoya Univ, Grad Sch Environm Studies, Earthquake & Volcano Res Ctr, Nagoya, Aichi, Japan |
推荐引用方式 GB/T 7714 | Heise, W.,Caldwell, T. G.,Bannister, S.,et al. Mapping subduction interface coupling using magnetotellurics: Hikurangi margin, New Zealand[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(18). |
APA | Heise, W..,Caldwell, T. G..,Bannister, S..,Bertrand, E. A..,Ogawa, Y..,...&Ichihara, H..(2017).Mapping subduction interface coupling using magnetotellurics: Hikurangi margin, New Zealand.GEOPHYSICAL RESEARCH LETTERS,44(18). |
MLA | Heise, W.,et al."Mapping subduction interface coupling using magnetotellurics: Hikurangi margin, New Zealand".GEOPHYSICAL RESEARCH LETTERS 44.18(2017). |
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