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http://dx.doi.org/10.3741/JKWRA.2003.36.6.1035

Test for the TOPMODEL′s Ability to Predict Water Table Depths of the Transient Saturation Zones which Are Formed on the Steep Hillslope  

An, Jung-Gi (농업기반공사 제주도본부 환경지질부)
Publication Information
Journal of Korea Water Resources Association / v.36, no.6, 2003 , pp. 1035-1046 More about this Journal
Abstract
In order to evaluate the TOPMODEL's prediction ability for spatial distribution of water table depths, two major assumptions and governing equation of water table depth are tested. For the test, data of hydrological observations are used and a soil survey is made in the steep hillslope with thin soils. Responses of water table and hydraulic properties of soil are coincident with two major assumptions of the TOPMODEL's such as water table gradient parallel to the local topographical slope and exponential decline in transmissivity with depths. Soil texture and the decline rate of transmissivity(f) we homogeneous in space at the 0∼0.3m depths of the soil of the hillslope, but they are heterogeneous in space below its 0.3m depths due to the vertical change of soil texture and the ‘f’. It is shown that the TOPMODEL's equation can be used for simulating distribution of water table depth at the depths with uniform values of the 'f'.
Keywords
TOPMODEL; water table depth; test of assumptions and governing equation; the decline rate of transmissivity; TOPMODEL;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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