The Coastal Platform Morphodynamics Characteristics Belang Bay, North Sulawesi Province
Abstract
Abstract. Coastal dynamics represent change from time to time, could be the form of coastal presenting effect ofsedimentation and earn also in the form of coastal backing effect of erosion.This research of coastalmorphodynamics on Belang Bay, will study by some aspect that is: beach morphology, grain size sediment andhydrodynamics activity. The purpose of this study is to see how far the influence of the morphodynamics of thecoastal damage and sensitivity (susceptibility) coastal sea water due to the influence of hydrodynamics. Methodof data collection and analysis, two main parameters were measured wave energy and beach characteristics.Knowledge on the morphodynamic behaviour of beaches was obtained from a topographic measurementsof 15 beach transects normal to the coastline. Widely used morphodynamic parameters, like the SurfSimilarity and the Surf Scaling parameters, were applied to the data, resulting in a general morphodynamiccharacterization of beaches, represented in a map of beach type distribution. In molompar beach identified bysediment material vary between finesand up to coarse sand which is distribution in each coastal circulationcell of Molompar beach.
Keywords: hydrodynamics, morphodynamic, surf, similarity, coastal
References
Anfuso, G.; Gracia, F.J.; Andres, L.; SNCHEZ, F.; DELR O, L., and L"PEZ-AGUAYO, F, 2000. Depth of disturbance in mesotidal beaches during a single tidal cycle. Journal of Coastal Research, 16 (2), 446-457.
Balsillie, J.H, 1986. Beach and coast erosion due to extreme event impact. Shore and Beach, 54 (4), 22-37.
Battjes, J.A., 1974. Surf similarity. Proceedings of the 14th International Conference onCoastal Engineering, ASCE, pp. 446-480.
Benavante, J.; Gracia, F.J., and L"PEZ-AGUAYO, F, 2000. Empirical model of orphodynamic beachface behaviour for low-energy mesotidal environments. Marine Geology, 167, 375-390.
Dean, R.G, 1973. Heuristic models of sand transport in the surf zone. Proceedings of Conference on Engineering Dynamics in the Surf Zone (Sydney, Australia), pp. 208- 214.
Iribarren, R. and Nogales, C, 1949. Protection desports. Proceedings of the 17th International Naval Congress (Lisboa), Sec. II-4, pp. 31-82.
Duxbury, A.B.; A.C. Duxbury dan K.A. Sverdrup, 2002. Fundamental of Ocenography, Fourth Edition. Mc Greaw-Hill, Boston.
Lawrence, P.L, 1994. Natural hazards of shoreline bluff erosion: a case study of Horizon View, Lake Huron. In: Morisawa, M. (ed.), Geomorphology and Natural Hazards. Geomorphology, 10, 65-81.
PT. Sapta Adhi Pratama, 2006. Master Plan Pengelolaan Sumber Daya Alam Wilayah Sungai Molibagu-Belang di Kabupaten Bolaang Mongondow. Laporan Interim. Dinas Sumberdaya Air Provinsi Sulawesi Utara. Bagian Pelaksana Kegiatan Pembinaan dan Perencanaan. Manado.
Pusat Penelitian Geologi Kelautan, 1996. Survei Tematik Kelautan Terintegrasi Inventarisasi Sumberdaya Geologi dan Geofisika Kelautan Di Wilayah MCMA Manado dan Sekitarnya, Sulawesi Utara. Pusat Pengembangan Geologi Kelautan (PPGK). Bandung.
Ritter, D.F., R.C. Kochel, dan J.R. Miller, 1995. Process Geomorphology. Third Edition. Wm.C.Brown Publ. Dubuque.
Wright, L.D.; Short, A.D., and Green, M.O, 1985. Short-term changes in the morphodynamic states of beaches and surf zones: an empirical predictive model. Marine Geology, 62, 339-364