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Geomorphological response to an extreme flood: A case from southeast Spain
Author(s) -
Harvey A. M.
Publication year - 1984
Publication title -
earth surface processes and landforms
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.294
H-Index - 127
eISSN - 1096-9837
pISSN - 0197-9337
DOI - 10.1002/esp.3290090306
Subject(s) - flash flood , geology , flood myth , landform , storm , arid , alluvial fan , alluvium , hydrology (agriculture) , physical geography , channel (broadcasting) , geomorphology , geography , oceanography , archaeology , geotechnical engineering , paleontology , engineering , structural basin , electrical engineering
On 28–29 September 1980 an extreme storm of 150 mm of rain in c . 5 hours caused a flash flood near Tabernas in a semi‐arid area in southern Spain. With the rainfall total approximating the mean annual rainfall the recurrence interval is estimated to be 25–100 years. Flood peak discharges have been estimated from a mountain source area across an alluvial fan and the geomorphological response to the storm described. Channel adjustment differed between channels in the fanhead trench and those unconfined channels on the fan surface. The implications of the spatial pattern of erosional an depositional feaures for landform adjustment in semi‐arid regions are discussed.