- Title
- Landslide impacts on suspended sediment sources following an extreme event in the Magela Creek catchment, northern Australia
- Creator
- Erskine, Wayne D.; Saynor, Michael J.
- Relation
- IAHS ICCE International Symposium on Erosion Yields in the Changing Environment (ICCE'2012). Erosion and Sediment Yields in the Changing Environment: Proceedings of an IAHS International Commission on Continental Erosion Syposium (Chengdu, China 11-15 October, 2012) p. 138-145
- Relation
- http://www.irtces.org/isi/WebNews_View-en2.asp?WebNewsID=966
- Publisher
- International Association of Hydrological Sciences
- Resource Type
- conference paper
- Date
- 2012
- Description
- Record rainfall of up to 784 mm occurred between 17:00 h 27 February and 17:00 h 2 March 2007 in the Magela Creek catchment, northern Australia. Maximum return periods for 48 and 72 h durations exceeded 1:1000 years. The 24-hour maximum (398.4 mm) is the largest recorded in the region and the 2007 storm exceeded all previous 48 and 72 h recorded rainfall in the Northern Territory but was only one-third of Probable Maximum Precipitation. Sixteen landslides (0.3 km²) were triggered over a small area where sandstone had been stripped to reveal dolerite. The Munse ll® soil colour of the <63 μ1111 fraction of suspended sediment showed that in 2008 a series of "red" flood pulses on Magela Creek at stations up- and downstream of Ranger mine were sourced from the landslides by localised storms. Active fluvial sediment sources were restricted to a very small area for short periods of time during specific hydrological events.
- Subject
- sediment colour; suspended sediment sources; sediment fingerprinting; "red" flood pulses
- Identifier
- http://hdl.handle.net/1959.13/1307957
- Identifier
- uon:21574
- Identifier
- ISBN:9781907161339
- Language
- eng
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