Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL076368 |
A Fluid Pulse on the Hikurangi Subduction Margin: Evidence From a Heat Flux Transect Across the Upper Limit of Gas Hydrate Stability | |
Pecher, I. A.1; Villinger, H.2; Kaul, N.3; Crutchley, G. J.4; Mountjoy, J. J.5; Huhn, K.3; Kukowski, N.6; Henrys, S. A.4; Rose, P. S.7; Coffin, R. B.7 | |
2017-12-28 | |
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:24 |
文章类型 | Article |
语种 | 英语 |
国家 | New Zealand; Germany; USA |
英文摘要 | A transect of seafloor heat probe measurements on the Hikurangi Margin shows a significant increase of thermal gradients upslope of the updip limit of gas hydrate stability at the seafloor. We interpret these anomalously high thermal gradients as evidence for a fluid pulse leading to advective heat flux, while endothermic cooling from gas hydrate dissociation depresses temperatures in the hydrate stability field. Previous studies predict a seamount on the subducting Pacific Plate to cause significant overpressure beneath our study area, which may be the source of the fluid pulse. Double-bottom simulating reflections are present in our study area and likely caused by uplift based on gas hydrate phase boundary considerations, although we cannot exclude a thermogenic origin. We suggest that uplift may be associated with the leading edge of the subducting seamount. Our results provide further evidence for the transient nature of fluid expulsion in subduction zones. |
英文关键词 | gas and hydrate systems heat flow (benthic) marine seismics subduction zone processes |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000422954700054 |
WOS关键词 | BOTTOM-SIMULATING REFLECTORS ; NEW-ZEALAND ; METHANE SEEPAGE ; FAULT-ZONE ; FLOW ; SEA ; CONDUCTIVITY ; EARTHQUAKE ; VELOCITY ; BUDGETS |
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/27769 |
专题 | 气候变化 |
作者单位 | 1.Univ Auckland, Sch Environm, Auckland, New Zealand; 2.Univ Bremen, Dept Geosci, Bremen, Germany; 3.Univ Bremen, MARUM, Bremen, Germany; 4.GNS Sci, Wellington, New Zealand; 5.NIWA, Wellington, New Zealand; 6.Univ Jena, Jena, Germany; 7.Texas A&M Univ, Corpus Christi, TX USA |
推荐引用方式 GB/T 7714 | Pecher, I. A.,Villinger, H.,Kaul, N.,et al. A Fluid Pulse on the Hikurangi Subduction Margin: Evidence From a Heat Flux Transect Across the Upper Limit of Gas Hydrate Stability[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(24). |
APA | Pecher, I. A..,Villinger, H..,Kaul, N..,Crutchley, G. J..,Mountjoy, J. J..,...&Coffin, R. B..(2017).A Fluid Pulse on the Hikurangi Subduction Margin: Evidence From a Heat Flux Transect Across the Upper Limit of Gas Hydrate Stability.GEOPHYSICAL RESEARCH LETTERS,44(24). |
MLA | Pecher, I. A.,et al."A Fluid Pulse on the Hikurangi Subduction Margin: Evidence From a Heat Flux Transect Across the Upper Limit of Gas Hydrate Stability".GEOPHYSICAL RESEARCH LETTERS 44.24(2017). |
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