- Tytuł:
-
Spatial and temporal variations of sedimentation rate in the Timah Tasoh Water Reservoir, Perlis, Malaysia
Analiza przestrzenna i czasowa zmiennosci ilosci sedymentu w zbiorniku Timah Tasoh, Perlis w Malezji - Autorzy:
-
Rahaman, Z A
Ismail, W.R. - Powiązania:
- https://bibliotekanauki.pl/articles/81815.pdf
- Data publikacji:
- 2010
- Wydawca:
- Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
- Tematy:
-
spatial analysis
temporal analysis
variation
sedimentation rate
sediment discharge
Timah Tasoh Reservoir
Perlis
Malaysia - Opis:
-
Human activities such
as logging, land conservation, road construction
and other disturbances in watersheds will increase
erosion rate and thus the amount of sediment
transported into the river that reaches lakes, reservoirs
and sea. Accelerated sedimentation rate in
the reservoir can signifi cantly reduce a reservoir’s
surface area, eliminating wetland area surrounding
the reservoir and shallow the areas near the shore
of the reservoir. A study of sedimentation rate in
the Timah Tasoh water reservoir was carried out
from May 2001 to April 2002 by means of sediment
traps. The aim of this study is to determine
the spatial and temporal pattern of sedimentation
rates in the reservoir. The sediment traps were
installed at five different locations in the reservoir
and replaced every month. Gross sedimentation
rates measured in the sediment traps vary
from about an average of 1.4 kg/m2/month or
16.3 kg/m2/yr in the deepest part of the reservoir
to about 79.2 kg/m2/yr (monthly average of 6.6
kg/m2/month) and 47.1 kg/m2/yr (monthly average
of 3.9 kg/m2/month) near the inlet of the
Pelarit River and the Tasoh River respectively. The
sedimentation rate near the Pelarit River and the
Tasoh River inflow is correlated with the water and
suspended sediment discharge in the river, owing
to its proximity to the rivers and the fl ooding effect,
mainly during the wet season. The sedimentation
rate decreases southward along the reservoir, as a
result of increasing distance from the river mouth.
The total suspended sediment load of the Upper
Pelarit River and the Jarum River flowing into the
reservoir is 11.4 × 103 ton/year and 5.41 × 103 ton/
/year respectively.
Na podstawie szczegółowych łapaczkowych pomiarów terenowych przedstawiono zmiany przestrzenne i czasowe (2001–2002) ilości sedymentu w zbiorniku wodnym Timah Tasoh w Malezji. Łapaczki umieszczone w pięciu punktach zbiornika opróżniano co 5 miesięcy. Zmiany ilości sedymentu wykazano liczbowo na tle ilości dostarczanego rumowiska do zbiornika z rzek Pelarit oraz Jarum. - Źródło:
-
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation; 2010, 42, 1; 127-138
0208-5771 - Pojawia się w:
- Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation
- Dostawca treści:
- Biblioteka Nauki
Artykuł