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New approaches to the modelling of lake basin morphometry
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Air and Water Science. (Miljöanalys)
2007 (English)In: Environmental Modelling and Assessment, ISSN 1420-2026, E-ISSN 1573-2967, Vol. 12, no 3, 213-228 p.Article in journal (Refereed) Published
Abstract [en]

In lake modelling, a general and useful method of describing variations in area and volume with depth is of fundamental importance to describe processes and properties that change vertically within a given lake. In this work, two mathematical approaches to describe the shape of a lake basin are introduced and tested against empirical data. The two methods require only three easily available input parameters: maximum depth, surface area and volume. The first method is based on a traditional morphometric parameter, the volume development (V d), and the second method on the new hypsographic development parameter (H d). Both methods give area and volume at any depth of a lake and can furthermore be used to estimate lake bottom slopes. Comparisons with empirical area–depth and volume–depth distribution curves from 105 lakes that cover a wide range of lake morphometric characteristics have revealed that the two methods give very satisfactory results. The V d-model yields r 2-values of 0.924 and 0.907 for area and volume description with lake depth, respectively. The corresponding r 2-values for the H d-model are 0.988 and 0.996, respectively. Using the H d-model, an approach has also been developed to test when and by how much it is necessary to correct the empirical volume of a lake given the number of measured strata and basin shape.

Place, publisher, year, edition, pages
2007. Vol. 12, no 3, 213-228 p.
Keyword [en]
hypsographic curve, hypsographic development parameter, lake area, morphometry, volume, volume development parameter, water level fluctuations
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:uu:diva-13612DOI: 10.1007/s10666-006-9069-zISI: 000248000700005OAI: oai:DiVA.org:uu-13612DiVA: diva2:41382
Available from: 2008-01-24 Created: 2008-01-24 Last updated: 2017-12-11Bibliographically approved

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Håkanson, Lars

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