Hydrodynamics Features and Coastal Vulnerability of Sayung Sub-District, Demak, Central Java, Indonesia

  • Koko Ondara Research Institute for Costal Resources and Vulnerability - Ministry of Marine Affairs and Fisheries
  • Ruzana Dhiauddin Research Institute for Coastal Resources and Vulnerability - Ministry of Marine Affairs and Fisheries
  • Ulung Jantama Wisha Research Institute for Coastal Resources and Vulnerability - Ministry of Marine Affairs and Fisheries
  • Guntur Adhi Rahmawan Research Institute for Coastal Resources and Vulnerability - Ministry of Marine Affairs and Fisheries
Keywords: hydrodynamics, abrasion, sedimentation, coastal vulnerability


The Sayung sub-district is an abrasion area in Demak Regency that is mostly affected by sea level rise. The purpose of this research is to determine the features of hydrodynamics and coastal dynamics occurrence in the sub-district of Sayung. Collecting field data/information and modeling approach (tides, waves, currents, weather and coastline changes) have been done in Sayung, Demak. The wave height in the eastern coast is the highest. The significant wave height in 2004 was greater than March 2016 showing that in 2004 the wind energy transfers were larger than 2016. The refraction coefficient in 2016 for all directions was the greatest from the west at the depth of 8 m and the smallest one was identified in the south. The refraction coefficient in 2004 for any direction yielded the largest value in the southwest at the depth of 2 m and the smallest one was identified the south as well. During a cycle of tidal fluctuation, it occurs twice flood and ebb events. The maximum depth is 6.5 m located about 3.8 km from the coastline. The sediment thickness reached 564,886.39 m3. Coastline changes occurred in 2003 and started to gain sedimentation in 2015. Data and information produced can be useful as a basis for further developments to mitigate abrasion and to create policy-brief in managing coastline affected abrasion even though some improvement efforts have been made.


Download data is not yet available.


Cummins, S.J., Silvester, T.B., Cleary, P.W., 2012. Three-dimensional wave impact on a rigid structure using smoothed particle hydrodynamics. Int. J. Numer. Methods Fluids. https://doi.org/10.1002/fld.2539

Desmawan, B.T., Sukamdi, S., 2012. Adaptasi Masyarakat Kawasan Pesisir Terhadap Banjir Rob Di Kecamatan Sayung, Kabupaten Demak, Jawa Tengah. J. Bumi Indones.

Dewi, R.S., Bijker, W., Stein, A., Marfai, M.A., 2016. Fuzzy classification for shoreline change monitoring in a part of the Northern coastal area of Java, Indonesia. Remote Sens. https://doi.org/10.3390/rs8030190

Gao, J., Lan, X., Fan, Y., Chang, J., Wang, G., Lu, C., Xu, C., 2009. CFD modeling and validation of the turbulent fluidized bed of FCC particles. AIChE J. https://doi.org/10.1002/aic.11824

Garrett, C., Kunze, E., 2007. Internal Tide Generation in the Deep Ocean. Annu. Rev. Fluid Mech. https://doi.org/10.1146/annurev.fluid.39.050905.110227

Marfai, M.A., 2012. Preliminary assessment of coastal erosion and local community adaptation in sayung coastal area, central java -indonesia. Quaest. Geogr. https://doi.org/10.2478/v10117-012-0028-2

Pribadi, K., Diposaptono, S., Agung, F., 2010. Climate change and coastal zone management in Indonesia: example of adaptation at Demak Coast, Java Island, Indonesia. Res. Publ. Serv. 1, 185–200.

Wahyudi, S.I., Ni’am, M.F., Le Bras Gilbert, 2012. Problems, Causes and Handling Analysis of Tidal Flood, Erosion and Sedimentation in Northern Coast of Central Java: Review and Recommendation. Int. J. Civ. Environ. Eng.

Wisha, U.J., Heriati, A., 2017. Bathymetry and Hydrodynamics in Pare Bay Waters During Transitional Seasons (SeptemberOctober). Omni-Akuatika. https://doi.org/10.20884/1.oa.2016.12.2.98

Wisha, U.J., Husrin, S., Prasetyo, G.S., 2016. Hydrodynamics of Bontang Seawaters: Its Effects on the Distribution of Water Quality Parameters. ILMU Kelaut. Indones. J. Mar. Sci. https://doi.org/10.14710/ik.ijms.21.3.123-134

Wisha, U.J., Husrin, S., Prihantono, J., 2015. Hydrodynamics Banten Bay During Transitional Seasons (August-September) (Hidrodinamika Perairan Teluk Banten Pada Musim Peralihan (Agustus–September)). ILMU Kelaut. Indones. J. Mar. Sci. https://doi.org/10.14710/ik.ijms.20.2.101-112

Abstract viewed = 17 times
Download PDF downloaded = 12 times