Alluvial fan
An alluvial fan is a fan-shaped deposit of soil and rocks. It forms where a fast-flowing river spreads out over a flat plain. They are usually found in between mountain ranges that are crumbling away. If it rains a lot, the fan area will usually flood.[1][2]
Alluvial plain
An alluvial plain is a mostly flat landform where sediment is deposited over time. The cause is the same: one or more rivers coming from highland regions. A floodplain is the smaller area over which the rivers flood at a particular period of time, and the alluvial plain is the larger area, where floodplains have shifted over geological time.
Alluvial Fan Media
Alluvial fan in Death Valley
Large alluvial fan in Death Valley showing a "toe-trimmed" profile
Topographic map of an alluvial fan near Rawa Danau Caldera, West Java, Indonesia
Pebble bed in the New Red Sandstone
Large alluvial fan at the base of the rim of Gale crater, Mars
Related pages
References
- ↑ Cazanacli, Dan. Experimental Steep, Braided Flow: Application to Flooding Risk on Fans. Journal of Hydraulic Engineering 128 (3) (2002). p. 322. doi:10.1061/(ASCE)0733-9429(2002)128:3(322).
- ↑ Committee on Alluvial Fan Flooding, Water Science and Technology Board, Commission on Geosciences, Environment, and Resources, National Research Council.. Alluvial fan flooding (1996). Washington, D.C.: National Academy Press. ISBN 0-309-05542-3.
Other websites
- Howard, J.M.. Large alluvial fans on Mars. Journal of Geophysical Research 110 (2005). p. E04005. doi:10.1029/2004JE002352. Retrieved 2012-03-14.
- Irrigation in the alluvial fan of Punata, Bolivia
- Irrigation in the alluvial fan of Garmsar, Iran
- Flood recession cropping in the alluvial fan of Okavango, Botswana
- Irrigation in alluvial fans in Baluchistan
- Irrigation of alluvial fans Archived 2012-02-23 at the Wayback Machine
