Anatomy of sand beach ridges: evidence from severe Tropical Cyclone Yasi and its predecessors, northeast Queensland, Australia

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dc.contributor.authorNott, Jen_AU
dc.contributor.authorChagué-Goff, Cen_AU
dc.contributor.authorGoff, JRen_AU
dc.contributor.authorSloss, CRen_AU
dc.contributor.authorRiggs, Nen_AU
dc.date.accessioned2014-01-06T05:54:16Zen_AU
dc.date.available2014-01-06T05:54:16Zen_AU
dc.date.issued2013-09-01en_AU
dc.date.statistics2014-01-06en_AU
dc.description.abstractFour well-identified tropical cyclones over the past century have been responsible for depositing distinct units of predominantly quartzose sand and gravel to form the most seaward beach ridge at several locations along the wet tropical coast of northeast Queensland, Australia. These units deposited by tropical cyclones display a key sedimentary signature characterized by a sharp basal erosional contact, a coarser grain size than the underlying facies and a coarse-skewed trend toward the base. Coarse-skewed distributions with minimal change in mean grain size also characterize the upper levels of the high-energy deposited units at locations within the zone of maximum onshore winds during the tropical cyclone. These same coarse skew distributions are not apparent in sediments deposited at locations where predominantly offshore winds occurred during the cyclone, which in the case of northeast Australia is north of the eye-crossing location. These sedimentary signatures, along with the geochemical indicators and the degraded nature of the microfossil assemblages, have proven to be useful proxies to identify storm-deposited units within the study site and can also provide useful proxies in older beach ridges where advanced pedogenesis has obscured visual stratigraphic markers. As a consequence, more detailed long-term histories of storms and tropical cyclones can now be developed.© 2013, American Geophysical Union.en_AU
dc.identifier.citationNott, J., Chagué-Goff, C., Goff., J., Sloss, c., & Riggs, N. (2013). Anatomy of sand beach ridges: evidence from severe Tropical Cyclone Yasi and its predecessors, northeast Queensland, Australia. Journal of Geophysical Research: Earth Surface, 118 (3), 1710-1719. doi:10.1002/jgrf.20122en_AU
dc.identifier.govdoc5302en_AU
dc.identifier.issn2169-9003en_AU
dc.identifier.issue3en_AU
dc.identifier.journaltitleJournal of Geophysical Research: Earth Surfaceen_AU
dc.identifier.pagination1710-1719en_AU
dc.identifier.urihttp://dx.doi.org/10.1002/jgrf.20122en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/5118en_AU
dc.identifier.volume118en_AU
dc.language.isoenen_AU
dc.publisherAmerican Geophysical Union.en_AU
dc.subjectShoresen_AU
dc.subjectErosionen_AU
dc.subjectGrain sizeen_AU
dc.subjectZonesen_AU
dc.subjectSanden_AU
dc.subjectOriginen_AU
dc.titleAnatomy of sand beach ridges: evidence from severe Tropical Cyclone Yasi and its predecessors, northeast Queensland, Australiaen_AU
dc.typeJournal Articleen_AU
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