Sustained reworking of hydraulic mining sediment in California: G.K. Gilbert's sediment wave model reconsidered

Geomorphology and geoecology. Fluvial geomorphology

Auteurs :
JAMES, L.A.
DOUGLAS, I.

Description :
Hydraulic gold mining in the Sierra Nevada generated large volumes of sediment in the 19th century. Topographic surveys document several meters of mining sediment erosion in the bassin following a 1986 flood. The continued storage and mobility of sediment in the bassin indicate increased sediment loads over pre-mining levels and call for reevaluation of Gilbert's symmetrical sediment wave model. In basins where channel storage is substantial, a sediment wave should be right-skewed in respect to time due to protracted sediment releases from easily eroded, unconsolidated deposits.


Type de document :
Congrès

Source :
Symposium. 2nd International Conference on geomorphology: geomorphology and geoecology, Frankfurt/Main, Allemagne, 1989-09-03, Zeitschrift für Geomorphologie. Supplementband, issn : 0044-2798, 1993, n°. 88, p. 49-66, Collation : Illustration, Références bibliographiques : 60 réf.

Date :
1993

Editeur :
Pays édition : Allemagne, Berlin ; Stuttgart, Borntraeger