Data/hora: 12/06/2024 13:30:42

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 14/04/1999
Data da última atualização: | 14/04/1999
Autoria: | SIDLE, R. C.; CAMPBELL, A. J.
Título: | Patterns of suspended sediment transport in a coastal Alaska stream.
Ano de publicação: | 1985
Fonte/Imprenta: | Water Resources Bulletin, v.21, n.6, p.909-917, Dec. 1985.
Idioma: | Inglês
Conteúdo: | Suspended sediment data from a 154 ha watershed on northeast Chichagof Island, Alaska, were collected over three fall storm seasons from 1980 to 1982. Sediment rating curves for nine pooled storms explained less than 34 percent of the variation in total suspended solids (TSS). Significantly higher concentrations of suspended sediment occurred during the rising limb of storm hydrographs than for similar flows on the falling limb, accounting for hysteresis loops in TSS versus streamflow plots for individual storms. These hysteresis loops were wider during early season storms, indicating that easily transportable fine sediment may have been flushed from the upper portion of channel banks and from behind large organic debris during early season peak flows. Regression relationships (TSS versus Q) developed for the highest stormflows (> 1 m3/s) had steeper slopes than the lower stormflows (< 1 m3/s). Turbidity correlated well (r=0.94) with TSS for all stormflow data combined. Organic matter constituted an average of 35 percent (by weight) of TSS for all water quality samples.
Palavras-Chave: | Baia de armadilha; Escombro organico grande; Fluxo de tempestade; Large organic debris; Organic transport; Seasonal sedimentation trends; Sediment hysteresis loop; Solido suspendido volatil; Stormflows; Tendencia de sedimentacao sazonal; Transporte organico; Trap Bay; Turvacao; Volatile suspended solids.
Thesagro: | Sedimento.
Thesaurus Nal: | total suspended solids; turbidity.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (38189-1) - ADC - SP - -- - SP4626 -  - 4626 - DIS