DOI: 10.1016/j.quascirev.2016.02.002
Scopus记录号: 2-s2.0-84957590771
论文题名: Modelling sea level data from China and Malay-Thailand to estimate Holocene ice-volume equivalent sea level change
作者: Bradley S.L. ; Milne G.A. ; Horton B.P. ; Zong Y.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
卷: 137 起始页码: 54
结束页码: 68
语种: 英语
英文关键词: Adjustment modelling
; Antarctic ice sheet glacial isostatic
; Eustatic sea level
; Holocene sea level
Scopus关键词: Glacial geology
; Glaciers
; Ice
; Melting
; Tectonics
; Viscosity
; Antarctic ice sheets
; Eustatic sea level
; Glacial isostatic adjustment
; Holocene sea level
; Laurentide ice sheets
; Relative sea level
; Temporal variation
; Viscosity modeling
; Sea level
英文摘要: This study presents a new model of Holocene ice-volume equivalent sea level (ESL), extending a previously published global ice sheet model (Bassett et al., 2005), which was unconstrained from 10 kyr BP to present. This new model was developed by comparing relative sea level (RSL) predictions from a glacial isostatic adjustment (GIA) model to a suite of Holocene sea level index points from China and Malay-Thailand. Three consistent data-model misfits were found using the Bassett et al. (2005) model: an over-prediction in the height of maximum sea level, the timing of this maximum, and the temporal variation of sea level from the time of the highstand to present.The data-model misfits were examined for a large suite of ESL scenarios and a range of earth model parameters to determine an optimum model of Holocene ESL. This model is characterised by a slowdown in melting at ~7 kyr BP, associated with the final deglaciation of the Laurentide Ice Sheet, followed by a continued rise in ESL until ~1 kyr BP of ~5.8 m associated with melting from the Antarctic Ice Sheet. It was not possible to identify an earth viscosity model that provided good fits for both regions; with the China data preferring viscosity values in the upper mantle of less than 1.5 × 1020 Pa s and the Malay-Thailand data preferring greater values. We suggest that this inference of a very weak upper mantle for the China data originates from the nearby subduction zone and Hainan Plume. The low viscosity values may also account for the lack of a well-defined highstand at the China sites. © 2016 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59651
Appears in Collections: 过去全球变化的重建
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作者单位: Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Utrecht, Netherlands; Department of Earth and Environmental Sciences, University of Ottawa, Ottawa, Canada; Sea Level Research, Department of Marine and Coastal Sciences, Rutgers University, New Brunswick, NJ, United States; Institute of Earth, Ocean and Atmospheric Sciences, Rutgers University, New Brunswick, NJ, United States; Earth Observatory of Singapore and Asian School of the Environment, Nanyang Technological University, Singapore; Department of Earth Sciences, The University of Hong Kong, Hong Kong
Recommended Citation:
Bradley S.L.,Milne G.A.,Horton B.P.,et al. Modelling sea level data from China and Malay-Thailand to estimate Holocene ice-volume equivalent sea level change[J]. Quaternary Science Reviews,2016-01-01,137