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Runoff generation in a sandy area—the nizzana sands, Western Negev, Israel
Author(s) -
Yair A.
Publication year - 1990
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.3290150703
Subject(s) - surface runoff , topsoil , geology , infiltration (hvac) , hydrology (agriculture) , storm , sedimentary rock , geomorphology , environmental science , soil science , soil water , geochemistry , geotechnical engineering , geography , ecology , oceanography , biology , meteorology
This paper presents the results of sprinkling experiments conducted over the lower part of vegetated and crusted linear dunes as well as over flat playa surfaces that appear in the interdune corridors. Data obtained show that these two surface units respond quickly to rainstorms. Runoff generation can be expected for any storm exceeding 2‐3 mm and runoff coefficients are high. When the topsoil algal crust, 1 to 2 mm thick, is removed from the surface of the dune, infiltration increases drastically and eliminates any possibility of runoff generation under present‐day rainfall conditions. This data may be of great help in the understanding of the geomorphology and sedimentary sequence of the corridors separting linear dunes.