DOI: 10.1016/j.quascirev.2014.08.002
Scopus记录号: 2-s2.0-84906343391
论文题名: Interpreting and modelling late Quaternary dune accumulation in the southern Arabian Peninsula
作者: Leighton C.L. ; Bailey R.M. ; Thomas D.S.G.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 102 起始页码: 1
结束页码: 13
语种: 英语
英文关键词: Aeolian dune stratigraphies
; Arabian Peninsula
; Modelling
; Net accumulation rate
; OSL dating
; Palaeoenvironmental change
Scopus关键词: Models
; Sediment transport
; Stratigraphy
; Models
; Random processes
; Sediment transport
; Stochastic systems
; Stratigraphy
; Accumulation rates
; Arabian Peninsula
; Environmental conditions
; Environmental forcing
; Late Pleistocene-Holocene
; OSL dating
; Palaeoenvironmental change
; Stratigraphic records
; Sediment availability
; Random processes
; Sediments
; bioaccumulation
; biostratigraphy
; depositional environment
; environmental conditions
; eolian deposit
; geochronology
; Holocene
; numerical model
; paleoenvironment
; Pleistocene
; Quaternary
; sediment transport
; accumulation rate
; dune
; eolian process
; erosion
; historical record
; humid environment
; Pleistocene-Holocene boundary
; reconstruction
; sedimentation
; Arabian Peninsula
; Rub al Khali
英文摘要: One of the fundamental questions in the reconstruction of Quaternary dryland environmental conditions is: what do dune OSL ages mean in terms of palaeoenvironmental change? This paper investigates the relationship between dune chronological records and external environmental forcing in the southern Arabian Peninsula during the last 30 ka. Aeolian records from the region are reviewed with reference to other regional palaeoenvironmental proxies, and these findings are related to a modelled assessment of dune response to the aeolian system state of the northeastern Rub' al Khali. The model replicates a range of features of the regional dune chronology when forced by three external parameters (sediment supply, sediment availability, and transport capacity), including extensive regional dune accumulation during the late Pleistocene-Holocene transition and reduced activity during the early Holocene humid period. Dune chronologies incorporate the influence of both external forcing parameters and localised short-term factors included as stochastic processes. Thick sedimentary units most likely represent external forcing conditions conducive to aeolian sediment transport and deposition, but at the same time these factors may be represented by periods of erosion of sediment at different sites. Confident interpretation of past environmental conditions is therefore not possible based on results from individual stratigraphic records. Sampling at multiple locations is needed in order to distinguish dune accumulation and preservation due to external forcing from stochastic processes of dune development. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60145
Appears in Collections: 过去全球变化的重建
There are no files associated with this item.
作者单位: School of Geography and the Environment, University of Oxford, South Parks Road, Oxford OX1 3QY, United Kingdom; Department of Environmental and Geographical Science, University of Cape Town, Rondebosch 7701, South Africa
Recommended Citation:
Leighton C.L.,Bailey R.M.,Thomas D.S.G.. Interpreting and modelling late Quaternary dune accumulation in the southern Arabian Peninsula[J]. Quaternary Science Reviews,2014-01-01,102