Landscapes of the Lake Eyre Basin: the catchment-scale context that creates fluvial diversity
نویسندگان
چکیده
Lake Eyre Basin (LEB) rivers are important but under-researched. This study integrates published and new information into a systematic geomorphological overview, subdividing the LEB nine landscape zones: basin-margin Uplands with relatively high-energy rivers; Rocky Fringe, piedmont short floodouts; Western Rivers, notable for neotectonism stream capture; low-relief Northern Plains drainages Central dunefield; Channel Country-Vertic Downs, cracking-clay interfluves valley macrochannels; Country-Stony Domes, rocky or sandy complex Lakes & Dunes maintained by saline groundwater; playas in Mega-lakes. Zone boundary GIS datasets available. shown to be diverse distinctive, indicating need locally relevant knowledge management monitoring. Fluvial landform suites include sand-bed rivers, macrochannels hosting coexisting anabranching anastomosing systems vertic floodplains, floodouts, low-angle alluvial fans, three types of waterhole. Channels may discontinuous not present; floodplains can dominate flow transmission. Contributing hillslopes heterogenous their capacity generate runoff, while drainage networks have low high degrees integration. Management implications importance in-river terrestrial ecosystems “patchy” networks, inapplicability some morphometric practices.
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ژورنال
عنوان ژورنال: Transactions of The Royal Society of South Australia
سال: 2022
ISSN: ['0372-1426', '2204-0293']
DOI: https://doi.org/10.1080/03721426.2021.2003514