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Title (Primary) High accuracy measurements of water storage change in Mining Lake 111, Germany
Author Boehrer, B.; Kastner, S.; Ollesch, G.;
Journal Limnologica
Year 2010
Department SEEFO; BOPHY;
Volume 40
Issue 2
Language englisch;
Keywords Limnology; Precipitation; Evaporation; Lake; Water storage; Mining Lake 111
Abstract Several pressure sensors were deployed in a small lake to determine its storage change. It could be shown that a deep enough deployment and an averaging over a time interval of 1 hour and 5 measuring points allowed for a measurement of 1 or 2 kg/m2 (i.e. 2 mm of water column) of changes in the storage on the scale of the lake size. This accuracy for the lake storage could not be achieved by other methods, especially if conditions were difficult, e.g. snowfall, or in cases when precipitation was small. Finally, the pressure measurement - originally intended to roughly determine the water level - turned out to be a direct measurement of water mass in the lake, which was the proper magnitude for exchanges between atmosphere and lake. Hence the measurement of lake storage could become an interesting approach even for meteorological measurements, such as precipitation and evaporation on a water surface.
ID 9809
Persistent UFZ Identifier http://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=9809
Boehrer, B., Kastner, S., Ollesch, G. (2010):
High accuracy measurements of water storage change in Mining Lake 111, Germany
Limnologica 40 (2), 156 - 160