| DOI: | 10.1002/2016GL068408
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| 论文题名: | Hydrothermal iron flux variability following rapid sea level changes |
| 作者: | Middleton J.L.; Langmuir C.H.; Mukhopadhyay S.; McManus J.F.; Mitrovica J.X.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9087
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| EISSN: | 1944-8818
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| 出版年: | 2016
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| 卷: | 43, 期:8 | | 起始页码: | 3848
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| 结束页码: | 3856
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| 语种: | 英语
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| 英文关键词: | hydrothermal
; iron
; Last Glacial Maximum
; mid-ocean ridge
; sea level
; TAG
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| Scopus关键词: | Climate change
; Earth (planet)
; Glacial geology
; Iron
; Structural geology
; Submarine geology
; Volcanoes
; Biogeochemical interactions
; Climate variability
; Hydrothermal
; Hydrothermal activity
; Hydrothermal circulation
; Last Glacial Maximum
; Mid-ocean ridges
; Pleistocene glacial
; Sea level
; biogeochemistry
; copper
; data acquisition
; deglaciation
; flux measurement
; historical record
; hydrothermal activity
; hydrothermal circulation
; iron
; mid-ocean ridge
; sea level change
; sediment core
; volcanic eruption
; Atlantic Ocean
; Mid-Atlantic Ridge
; Pacific Ocean
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| 英文摘要: | Sea level changes associated with Pleistocene glacial cycles have been hypothesized to modulate melt production and hydrothermal activity at ocean ridges, yet little is known about fluctuations in hydrothermal circulation on time scales longer than a few millennia. We present a high-resolution record of hydrothermal activity over the past 50 ka using elemental flux data from a new sediment core from the Mir zone of the TAG hydrothermal field at 26°N on the Mid-Atlantic Ridge. Mir sediments reveal sixfold to eightfold increases in hydrothermal iron and copper deposition during the Last Glacial Maximum, followed by a rapid decline during the sea level rise associated with deglaciation. Our results, along with previous observations from Pacific and Atlantic spreading centers, indicate that rapid sea level changes influence hydrothermal output on mid-ocean ridges. Thus, climate variability may discretize volcanic processing of the solid Earth on millennial time scales and subsequently stimulate variability in biogeochemical interactions with volcanic systems. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84992298484&doi=10.1002%2f2016GL068408&partnerID=40&md5=5b8f87b7c9636c8ca601bfe35cab5774
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/10050
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States
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| Recommended Citation: | |
Middleton J.L.,Langmuir C.H.,Mukhopadhyay S.,et al. Hydrothermal iron flux variability following rapid sea level changes[J]. Geophysical Research Letters,2016-01-01,43(8).
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