Sandbar Formation in the Mesjid River Estuary, Rupat Strait, Riau Province, Indonesia

https://doi.org/10.22146/ijg.12536

Rifardi Rifardi(1*), Yeeri Badrun(2)

(1) Department of Marine Science, Faculty of Fisheries and Marine Sciences, Riau University
(2) Department of Biology, Faculty of Mathemathic and Natural Scienc-es, Muhammadyah University, Pekanbaru, Riau
(*) Corresponding Author

Abstract


At the aim to clarify the relationship between the sandbar  formation and lithogeneous sediment discharges, the sedimentological aspects of the Mesjid River Estuary are revealed by various analysis. The samples of bottom surface sediments and the suspended sediment were collected at 50 stations in the estuary using grab and van dorm samplers. Oceanographic observation were also carried out  at the stations. The Mesjid River Estuary receives lithogeneous sediments mainly from the Mesjid River’s drainage areas which play important role on the formation of sandbar which is shown by  a belt-like area (0.5-1.0 m depth) in the area off the river mouth. The sandbar might become a sandbank in 20 to 40 years later. High suspended sediment up to 354.61 mg/l indicates the river mouth receives lithogeneous sediments. Total of 926  ton/day of the sediments supplied by the river are deposited 0.024 m/year into the area.

Keywords


bottom surface sediment; suspended sedimentation; sediment discharge; sedimentation rates; bottom character

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References

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DOI: https://doi.org/10.22146/ijg.12536

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