Sediment transport, delta growth and sedimentation in Lake Nigardsvatn, Norway

Climate change and variability. Special issue

Auteurs :
ØSTREM, G.
HAAKENSEN, N.
OLSEN, H.C.
SÄLLSKAPET, S.

Description :
The lake, Nigardsvatn, has been studied since 1968 in order to obtain data on solid material carried by the meltwater stream from the glacier, both in suspension and as bottom load. Between 70 and 85% of the suspended sediment has been deposited on the lake bottom, forming annual varves. The coarse material has been deposited in a delta, the formation of which started in 1968. Its growth, and hence the volume of total annual bottom load, has been surveyed annually for the past 36 years. In 1969 the entire bottom load was collected by building a fence-like net across the river. If conditions remain constant, the lake will be completely filled in about 500 years.


Type de document :
Article de monographie

Source :
Geografiska annaler. Series A. Physical geography, issn : 0435-3676, 2005, vol. 87, n°. 1, p. 243-258, nombre de pages : 16, Collation : Illustration, Références bibliographiques : 39 ref.

Date :
2005

Editeur :
Pays édition : Suede, Stockholm, Svenska sällskapet för antropologi och geografi