globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2017.05.023
Scopus记录号: 2-s2.0-85020165277
论文题名:
Chronostratigraphy and geomorphology of washover fans in the Exmouth Gulf (NW Australia) – A record of tropical cyclone activity during the late Holocene
作者: May S.M.; Brill D.; Leopold M.; Callow J.N.; Engel M.; Scheffers A.; Opitz S.; Norpoth M.; Brückner H.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2017
卷: 169
起始页码: 65
结束页码: 84
语种: 英语
英文关键词: Late Holocene tropical cyclones ; Optically stimulated luminescence (OSL) ; Palaeotempestology ; Storm deposits ; Washover fans ; Western Australia
Scopus关键词: Atmospheric pressure ; Atmospheric temperature ; Climatology ; Floods ; Geological surveys ; Geomorphology ; Geophysical prospecting ; Ground penetrating radar systems ; Hurricanes ; Landforms ; Luminescence ; Ocean currents ; Oceanography ; Storms ; Surface waters ; Tropics ; Unmanned aerial vehicles (UAV) ; Optically stimulated luminescence ; Palaeotempestology ; Storm deposits ; Tropical cyclone ; Washover ; Western Australia ; Deposition ; Anthozoa
英文摘要: Washover fans typically form due to barrier overwash or breaching and coastal inundation and generally represent geomorphological and depositional evidence of intense storms. Few studies have investigated the chronostratigraphy of washover fans in order to infer magnitude/frequency patterns of extreme-wave events over longer time scales. Here we present new data on the chronostratigraphy of late Holocene washover fans in the Exmouth Gulf (Western Australia) by using ground penetrating radar and unmanned aerial vehicle (UAV) survey techniques, as well as geomorphological, sedimentological and chronological investigations. This study aims to (i) provide a detailed characterization of the washover fans' geomorphology and stratigraphical architecture; (ii) document depositional processes involved in their formation; (iii) establish a chronostratigraphy based on optically stimulated luminescence (OSL); and (iv) understand the significance of the washover fans for recording past tropical cyclone (TC) activity. The fans consist of multiple sequences of sand, shell debris and coral rubble comprising depositional units related to TC-induced inundation. The units are separated by palaeosurfaces with incipient soil formation, formed during periods of reduced depositional activity. In combination with the interpretation of a UAV-based high-resolution digital surface model, multiple phases of reactivation are inferred. OSL results allow the establishment of a local long-term TC record and suggest storm-induced deposition at ∼170, ∼360, ∼850 and ∼1300 years ago. Further units were dated to ∼1950, ∼2300, and ∼2850 years ago. The chronology of TC events is consistent with other work relating TC activity with El Niño Southern Oscillation (ENSO) and sea surface temperature (SST) patterns, corroborating the regional palaeotempestological relevance of this unique geomorphological record. © 2017 Elsevier Ltd
资助项目: Funding by Deutsche Forschungsgemeinschaft (DFG, MA 5768/1-1) and Australian Research Council (ARC, Future Fellowship FT0990910) is gratefully acknowledged. Henrik Gelhausen, Nina Szemkus, Nicole Birk, and Anita Lanners assisted field and lab work. The GPR was kindly provided by UWA School of Earth and Environment, Centre for Energy Geoscience. The research was kindly permitted and supported by Ann Preest, the local elders and aboriginal communities of Exmouth, the landowner and managers of Exmouth Gulf station, the Department of Environment and Conservation (DEC) and, later, of the Department of Parks and Wildlife (DoPW ; Perth, Exmouth). Finally, we thank P. Costa and one further anonymous reviewer for the detailed comments and corrections during the review process.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59163
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作者单位: Institute of Geography, University of Cologne, Albertus-Magnus-Platz, Cologne, Germany; School of Agriculture and Environment, The University of Western Australia, 35 Stirling Highway, Crawley, WA, Australia; Southern Cross GeoScience, Southern Cross University, PO Box 157, Lismore, NSW, Australia

Recommended Citation:
May S.M.,Brill D.,Leopold M.,et al. Chronostratigraphy and geomorphology of washover fans in the Exmouth Gulf (NW Australia) – A record of tropical cyclone activity during the late Holocene[J]. Quaternary Science Reviews,2017-01-01,169
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