DOI: 10.1029/2012GL054118
论文题名: Direct ventilation of the North Pacific did not reach the deep ocean during the last deglaciation
作者: Jaccard S.L. ; Galbraith E.D.
刊名: Geophysical Research Letters
ISSN: 0094-9405
EISSN: 1944-9136
出版年: 2013
卷: 40, 期: 1 起始页码: 199
结束页码: 203
语种: 英语
Scopus关键词: Deglaciations
; Dense waters
; Intermediate depths
; Last deglaciation
; Local source
; North Pacific
; Redox sensitives
; Sediment core
; Stream flow
; Ventilation
; deep sea
; Heinrich event
; last deglaciation
; paleoceanography
; sediment core
; trace metal
; ventilation
; water depth
; Pacific Ocean
; Pacific Ocean (North)
英文摘要: Despite its tremendous size, the deep North Pacific has received relatively little attention by paleoceanographers. It was recently suggested that the deep North Pacific was directly ventilated by dense waters formed in the subarctic Pacific during Heinrich Stadial 1 (HS1) of the early deglaciation. Here we present new redox-sensitive trace metal data from a sediment core at 2393 m in the subarctic Pacific, in comparison with previously published data from elsewhere in the region. The combined picture shows no sign of ventilation during the early deglaciation in any available core from water depths of 2393 m and deeper, while the deepest core to display clear signs of enhanced ventilation during HS1 was raised from 1366m water depth. Thus, it appears likely that, although the North Pacific was well ventilated to intermediate depths during HS1, the deep ocean did not receive a significant input of dense waters from a local source, but remained isolated from the surface waters above. Sample unit level copyright. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874853982&doi=10.1029%2f2012GL054118&partnerID=40&md5=6a5aeab8ff1038ab7bca05eab009838e
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6669
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Geological Institute, ETHZ, Sonneggstr. 5, CH-8092 Zurich, Switzerland
Recommended Citation:
Jaccard S.L.,Galbraith E.D.. Direct ventilation of the North Pacific did not reach the deep ocean during the last deglaciation[J]. Geophysical Research Letters,2013-01-01,40(1).