globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2016.08.034
Scopus记录号: 2-s2.0-84988358574
论文题名:
Sensitivity of palaeotidal models of the northwest European shelf seas to glacial isostatic adjustment since the Last Glacial Maximum
作者: Ward S.L.; Neill S.P.; Scourse J.D.; Bradley S.L.; Uehara K.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
卷: 151
起始页码: 198
结束页码: 211
语种: 英语
英文关键词: Glacial isostatic adjustment ; Last Glacial Maximum ; Northwest European shelf seas ; Palaeotidal model ; ROMS
Scopus关键词: Dynamics ; ROM ; Sea level ; Sediment transport ; Sedimentation ; Tectonics ; Tidal power ; Tides ; European shelf ; Glacial isostatic adjustment ; Glacial Isostatic Adjustments ; Last Glacial Maximum ; Relative sea-level changes ; Sediment transport pathways ; Spatial and temporal changes ; Spatial and temporal distribution ; Glacial geology ; biogeochemistry ; deglaciation ; energy dissipation ; glacioisostasy ; Last Glacial Maximum ; mixed layer ; paleoenvironment ; sea level change ; sediment transport ; spatiotemporal analysis ; three-dimensional modeling ; tidal cycle ; wave modeling ; Atlantic Ocean ; Northwest European Shelf
英文摘要: The spatial and temporal distribution of relative sea-level change over the northwest European shelf seas has varied considerably since the Last Glacial Maximum, due to eustatic sea-level rise and a complex isostatic response to deglaciation of both near- and far-field ice sheets. Because of the complex pattern of relative sea level changes, the region is an ideal focus for modelling the impact of significant sea-level change on shelf sea tidal dynamics. Changes in tidal dynamics influence tidal range, the location of tidal mixing fronts, dissipation of tidal energy, shelf sea biogeochemistry and sediment transport pathways. Significant advancements in glacial isostatic adjustment (GIA) modelling of the region have been made in recent years, and earlier palaeotidal models of the northwest European shelf seas were developed using output from less well-constrained GIA models as input to generate palaeobathymetric grids. We use the most up-to-date and well-constrained GIA model for the region as palaeotopographic input for a new high resolution, three-dimensional tidal model (ROMS) of the northwest European shelf seas. With focus on model output for 1 ka time slices from the Last Glacial Maximum (taken as being 21 ka BP) to present day, we demonstrate that spatial and temporal changes in simulated tidal dynamics are very sensitive to relative sea-level distribution. The new high resolution palaeotidal model is considered a significant improvement on previous depth-averaged palaeotidal models, in particular where the outputs are to be used in sediment transport studies, where consideration of the near-bed stress is critical, and for constraining sea level index points. © 2016 The Authors
资助项目: Funding was provided by the Natural Environment Research Council through grant NE/I527853/1 (Ph.D. studentship to SLW). The author acknowledges modelling support from Patrick Timko and Reza Hashemi. The model simulations were undertaken on High Performance Computing (HPC) Wales, a collaboration between Welsh universities, the Welsh Government and Fujitsu Laboratories of Europe. The authors also thank one anonymous reviewer and Dayton Dove for their thoughtful comments, and thorough and constructive reviews.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59420
Appears in Collections:过去全球变化的重建

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作者单位: School of Ocean Sciences, Bangor University, Menai Bridge, Isle of Anglesey, United Kingdom; Institute of Marine and Atmospheric Research, Utrecht University, Princetonplein 5, CC Utrecht, Netherlands; Research Institute for Applied Mechanics, Kyushu University, Kasuga, Fukuoka, Japan

Recommended Citation:
Ward S.L.,Neill S.P.,Scourse J.D.,et al. Sensitivity of palaeotidal models of the northwest European shelf seas to glacial isostatic adjustment since the Last Glacial Maximum[J]. Quaternary Science Reviews,2016-01-01,151
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