DOI: 10.1016/j.gloplacha.2013.04.009
论文题名: Dust and temperature influences on glaciofluvial sediment deposition in southwestern Tibet during the last millennium
作者: Conroy J.L. ; Overpeck J.T. ; Cole J.E. ; Liu K.-B. ; Wang L. ; Ducea M.N.
刊名: Global and Planetary Change
ISSN: 0921-8260
出版年: 2013
卷: 107 起始页码: 132
结束页码: 144
语种: 英语
英文关键词: Dust
; Himalayas
; Lake sediment
; Paleoclimate
; Temperature
; Tibet
Scopus关键词: Elemental abundance
; Himalayas
; Lake sediments
; Paleoclimates
; Sediment deposition
; Temperature impact
; Temperature influence
; Tibet
; Deposition
; Glacial geology
; Lakes
; Melting
; Sediment transport
; Sedimentology
; Stream flow
; Temperature
; Dust
; depositional environment
; dust
; glaciofluvial deposit
; hydrology
; lacustrine deposit
; paleoclimate
; proxy climate record
; streamflow
; temperature effect
; timescale
; China
; Himalayas
; Qinghai-Xizang Plateau
; Xizang
; Equus kiang
英文摘要: Dust over the Himalayas and southern Tibetan Plateau may influence high-elevation temperature and hydrology across Asia, but little is known about long-term dust variability and its relationship with regional climate over the last millennium. Here we have reconstructed a proxy record of past dust and temperature impacts on glacial streamflow and sediment deposition in Kiang Co, a small lake on the southwestern Tibetan Plateau. Terrigenous elemental variability in the Kiang Co sediment record, a proxy for glaciofluvial sediment deposition in the lake, covaries with the Dasuopu ice core dust record from the central Himalayas on centennial timescales. The relationship between the Kiang Co sediment record and Dasuopu indicates coherent dust forcing across the central Himalayas over much of the last millennium, and suggests that regional dustiness influences glacial streamflow and sediment transport on centennial timescales. In addition, the Kiang Co terrigenous elemental abundance record is positively correlated with May-September temperatures from the Tibetan Plateau to central India from 1870 to 2007. AD, highlighting the important influence of temperature on melting and streamflow in this region, as well as a relationship between dust and temperature on centennial timescales. These findings strengthen the likelihood of future dustiness with continued warming, along with further increases in melting and high-elevation streamflow in coming decades. © 2013 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878924480&doi=10.1016%2fj.gloplacha.2013.04.009&partnerID=40&md5=3f8aea248df4d29102813e5d0bf381f0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11166
Appears in Collections: 全球变化的国际研究计划
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作者单位: School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, United States
Recommended Citation:
Conroy J.L.,Overpeck J.T.,Cole J.E.,et al. Dust and temperature influences on glaciofluvial sediment deposition in southwestern Tibet during the last millennium[J]. Global and Planetary Change,2013-01-01,107.