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Shelf sand supply determined by glacial-age sea-level modes, submerged coastlines and wave climate
Ribó, M.; Goodwin, I.D.; O'Brien, P.; Mortlock, T. (2020). Shelf sand supply determined by glacial-age sea-level modes, submerged coastlines and wave climate. NPG Scientific Reports 10(1): 10 pp. https://dx.doi.org/10.1038/s41598-019-57049-8
In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322; e-ISSN 2045-2322, more
Peer reviewed article  

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  • Ribó, M.
  • Goodwin, I.D.
  • O'Brien, P.
  • Mortlock, T.

Abstract
    Submerged paloeshorelines preserved on the continental shelf indicate the depths of the most frequent (modal) low sea-levels within the glacial stages of the Late Quaternary. Here we have determined the south-east Australian shelf configuration when sea level was 40 m and 60 m below present-day sea-level (depths of the most persistent paleoshorelines within the last 120 ka), and we resolve the wave climate variations influencing the sediment transport pathways over this period. We present evidence demonstrating that the combination of shelf morphological evolution, changes in sea-level and variations in wave climate is responsible for latitudinal changes in sediment transport and deposition during the interglacial states. The paleoshoreline and shelf evolution is key to understanding the distribution of present-day shelf sand deposits and the contemporary sand budget response to future wave climate changes.

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