气候变化领域集成服务门户(CCPortal): Exploring Sea Country through high-resolution 3D seismic imaging of Australia's NW shelf: Resolving early coastal landscapes and preservation of underwater cultural heritage

CCPortal

DOI	10.1016/j.quascirev.2020.106353
	Exploring Sea Country through high-resolution 3D seismic imaging of Australia's NW shelf: Resolving early coastal landscapes and preservation of underwater cultural heritage
	O'Leary M.J.; Paumard V.; Ward I.
发表日期	2020
ISSN	0277-3791
卷号	239
英文摘要	Almost 2 million square km of Australia's continental shelf was flooded following the termination of the last glacial maximum, and with it the cultural heritage of the first arrival and coastal occupation of Australia beginning some 65,000 years ago. In order to prospect for this missing cultural record, we must first identify submerged coastal landscapes and landforms that likely provided favourable environments for occupation and resource use. However, this task is challenged by the sheer size of the Australian continental margin. To help address this, we use industry 3D seismic datasets, that cover vast areas of Australia's continental shelf, to map seafloor bathymetry at high resolution (10–25 m). Our study focuses an area of 6500 square km on the mid/outer shelf regions proximal to Barrow Island. The 3D seismic bathymetry revealed a highly complex and geomorphically mature coastal landscape preserved at depths of 70–75 m below sea level, including coastal barrier dunes, lagoonal systems, tidal flats and estuarine channels. Based on the depth of the submerged shorelines and reconstructed sea level curves, the age range of these coastal landforms is constrained to Marine Isotope Stage 3 (57–29 ka), which overlaps with the known onset of occupation at Barrow Island and the wider Carnarvon bioregion and the adjacent Pilbara. Such feature preservation has significant geoheritage value, but also allows for human behavioural ecology modelling and provides targets for future dating and site survey. © 2020 Elsevier Ltd
语种	英语
scopus关键词	Bathymetry; Behavioral research; Ecology; Employment; Geomorphology; Historic preservation; Sea level; Seismology; Underwater imaging; 3D seismic imaging; Coastal landscapes; Continental shelves; Cultural heritages; Feature preservation; Last Glacial Maximum; Marine isotope stages; Seafloor bathymetry; Landforms; bathymetry; continental margin; continental shelf; cultural heritage; data set; exploration; imaging method; landscape change; Last Glacial Maximum; occupation; reconstruction; resource use; seafloor; spatial distribution; three-dimensional modeling; Australia; Barrow Island; Pilbara; Western Australia
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151451
作者单位	Centre for Energy Geoscience, School of Earth Sciences, The University of Western Australia, Perth, WA 6009, Australia; UWA Oceans Institute, The University of Western Australia, Perth, WA 6009, Australia; School of Social Sciences, The University of Western Australia, Perth, WA 6009, Australia
推荐引用方式 GB/T 7714	O'Leary M.J.,Paumard V.,Ward I.. Exploring Sea Country through high-resolution 3D seismic imaging of Australia's NW shelf: Resolving early coastal landscapes and preservation of underwater cultural heritage[J],2020,239.
APA	O'Leary M.J.,Paumard V.,&Ward I..(2020).Exploring Sea Country through high-resolution 3D seismic imaging of Australia's NW shelf: Resolving early coastal landscapes and preservation of underwater cultural heritage.Quaternary Science Reviews,239.
MLA	O'Leary M.J.,et al."Exploring Sea Country through high-resolution 3D seismic imaging of Australia's NW shelf: Resolving early coastal landscapes and preservation of underwater cultural heritage".Quaternary Science Reviews 239(2020).