Modern depositional processes in a confined bedrock setting: benches of the Shoalhaven river

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dc.contributor.authorKermode, SJen_AU
dc.contributor.authorCohen, TCen_AU
dc.contributor.authorReinfelds, IVen_AU
dc.contributor.authorNanson, GCen_AU
dc.contributor.authorJones, BJen_AU
dc.date.accessioned2015-12-28T02:07:58Zen_AU
dc.date.available2015-12-28T02:07:58Zen_AU
dc.date.issued2013-08-27en_AU
dc.date.statistics2015-11-27en_AU
dc.description.abstractThe lower Shoalhaven River provides an opportunity to examine bench processes in a confined setting. Stratigraphic analysis of trenches and augur holes, ground penetrating radar, Hec-RAS modelling and geochronological techniques combine to identify that benches of multiple levels along Bull Reach are composed of coarse material and have been extensively eroded and reworked by modern events. Kermode et al. (2012) established the long-term polycyclical nature of the higher alluvial surfaces (up to 193 ka in age), and this is contrasted with the youth of the lower inset alluvial surfaces, which are shown to be less than 270 years in age. This study evaluates the relative significance of both flood regime and effects of European settlement on the geomorphic effectiveness of high magnitude events and investigates the characteristics of bench formation in this confined setting. It characterises the nature of depositional events and the relationship between facies at an event scale. Using Hec-RAS modelling, events of different recurrence intervals are compared to explore the relative impact of varying flood magnitudes. The results bring into question the theory that inundation frequencies of these surfaces are constant, or associated with formative processes. © Authorsen_AU
dc.identifier.citationKermode, S. J., Cohen, T. C., Reinfelds, I. V., Nanson, G. C., & Jones, B. G. (2013). Modern depositional processes in a confined bedrock setting: Benches of the Shoalhaven River. Paper presented at the 8th International conference (AIG) on Geomorphology, Paris - 2013, 27-31 August.en_AU
dc.identifier.conferenceenddate31 August 2013en_AU
dc.identifier.conferencename8th International conference (AIG) on Geomorphologyen_AU
dc.identifier.conferenceplaceParis, Franceen_AU
dc.identifier.conferencestartdate27 August 2013en_AU
dc.identifier.govdoc6323en_AU
dc.identifier.urihttp://irangeomorphology.ir/files/site1/pages/Conference%20poster/abstracts_book_iag_paris_2013-1_part1.pdfen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/6493en_AU
dc.language.isoenen_AU
dc.publisherInternational Association of Geomorphologistsen_AU
dc.subjectMeetingsen_AU
dc.subjectAustraliaen_AU
dc.subjectNew South Walesen_AU
dc.subjectDepositionen_AU
dc.subjectRiversen_AU
dc.subjectFloodsen_AU
dc.subjectAlluvial depositsen_AU
dc.titleModern depositional processes in a confined bedrock setting: benches of the Shoalhaven riveren_AU
dc.typeConference Abstracten_AU
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