Sediment Characteristic of Pagai Strait, Mentawai
(1) Research Institute of Coastal Resources and Vulnerability. Ministry of Marine Affairs and Fisheries
(2) Civil Engineering Department Universitas Negeri Semarang
Abstract
Abstract. The marine sediment is important indicator of the seafloor. The characteristics of marine sediments can be seen from grain size, type and Total Dissolved Solid (TDS). Sediments derived from organic and non-organic particles are carried by the sea currents, waves, streams and tidal process in the coastal areas. At very high levels, sediments can cause pollution or vulnerability such as decreasing of dissolved oxygen, coral bleaching, and increased the eurotrification processes. Pagai Strait is located between North Pagai Island and South Pagai. This strait has enormous potential and it is used by the surrounding community for various activities such as port and sea transportation, fishery, marine aquaculture and tourism. This study aims to determine the characteristics of sediment in Pagai Strait. The field survey was conducted in September 2016 for waves, currents, water quality and sediment samples with purposive sampling method. The results showed that the average of sediments in Pagai Strait is D35 sized 0.155 mm; D50 sized 0.273 mm; and D90 sized 1.574 mm with specific gravity 2.665 gr/cm3 and dominated by sand 66.88%. TDS between 51.6 to 55.0 mg/L, appropriate for port and mangrove. Scale of sediment, A = 0.119 and sediment velocity is 0.002 m/s. Sediment transport approximately is 0.389 m3/day.
Keywords
Full Text:
PDFReferences
Coastal Engineering Manual (CEM). “Part III. Coastal Sediment Processesâ€. EM. 1110-2-1100.2002
Stull, T. “Physical Characteristics of Perth Beaches. Western Australiaâ€. The University of Western Australia. Crawley. West Australia. 2006
CERC. “Wave energy Utilization in Europe: Current Status and Perspectivesâ€. European Thematic Network on Wave Energy. Greece. 2002
Briggs, R.W., Sieh, K., Meltzner, A.J., Natawidjaja, D., Galetzka, J., Suwargadi, B., Hsu, Y.-j, Simons, M., Hananto, N., Suprihanto, I., Prayudi, D., Avouac, J.-P., Prawirodirdjo, L., Bock, Y. “Deformation and slip along the Sunda mega-thrust in The Great 2005 Nias-Simeulue Earthquakeâ€. Science 311,1897-1901. 2006
Konca, A.O., Avouac, J.-P., Sladen, A., Meltzner, A.J., Sieh, K., Fang, P., Li, Z., Galetzka, J., Genrich, J., Chlieh, M., Natawidjaja, D.H., Bock, Y., Fielding, E.J., Ji, C., Helmberger, D.V. “Partial Rupture of A Locked Patch of The Sumatra Megathrust During The 2007â€. Earthquake sequence. Nature456,631-635.http://dx.doi.org/10.1038/nature.07572. 2008
Shearer, P., Bürgmann, R. “Lessons learned from the 2004 Sumatra Andaman megathrust ruptureâ€. Annu.Rev.EarthPlanet.Sci.38,103-131.http://dx.doi.org/10.1146/annurev-earth-040809-152537. 2010
Hill, E.M., Borrero, J.C., Huang, Z., Qiu, Q., Banerjee, P., Natawidjaja, D.H., Elosegui, P., Fritz, H.M., Suwargadi, B.W., Pranantyo, I.R., Li, L., Macpherson, K.A., Skanavis, V., Synolakis, C.E., Sieh, K. “The 2010 MW 7.8 Mentawai Earthquake: Very Shallow Source of A Rare Tsunami Earthquake Determined from Tsunami Field Survey and Near-Field GPS Dataâ€. J.Geophys. Res. 117, B06402.http://dx.doi.org/10.1029/2012JB009159. 2012
Herdiana Mutmainah, Rizki Anggoro Adi, Aprizon Putra, Try Altanto, Ulung Jantama Wisha, Whisnu Arya Gumilang, Ilham Adnan, Mugiyanto, Prima Sahputra and Ilham Tanjung. “Final Report of Coastal Resources and Vulnerability Research at North Pagai Island Year 2016â€. Research Institute of Coastal Resources and Vulnerability (RICRV,MMAF). Padang.West Sumatera. 2016
USACE. “Coastal Engineering Manualâ€. Department of The Army Corps. Washington DC. 2000.
Refbacks
- There are currently no refbacks.
