Evaluation of TWI calculation, based on field observations
نویسندگان
چکیده
On the calculation of the topographic wetness index: evaluation of different methods based on field observations R. Sørensen, U. Zinko, and J. Seibert Department of Environmental Assessment, Swedish University of Agricultural Sciences, P.O. Box 7050, 75007 Uppsala, Sweden Department of Ecology and Environmental Science, Umeå University, Uminova Science Park, 90187 Umeå, Sweden Department of Physical Geography and Quaternary Geology, Stockholm University, 10691 Stockholm, Sweden Received: 14 July 2005 – Accepted: 16 August 2005 – Published: 31 August 2005 Correspondence to: R. Sørensen ([email protected]) © 2005 Author(s). This work is licensed under a Creative Commons License.
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On the calculation of the topographic wetness index: evaluation of different methods based on field observations
The topographic wetness index (TWI, ln(a/tanβ)), which combines local upslope contributing area and slope, is commonly used to quantify topographic control on hydrological processes. Methods of computing this index differ primarily in the way the upslope contributing area is calculated. In this study we compared a number of calculation methods for TWI and evaluated them in terms of their correl...
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