Coastal vulnerability is a condition where there is an increased processes of damage in the coastal areas caused by a variety of factors such as human activity and natural factors such as impact of sea level rise, sea waves and longshore current which cause abrasion and sedimentation processes which is once indicator of pressure on coastal areas even though not always interpreted as the degradation of coastal areas. Coastal vulnerability analysis is very important to be done, by doing a study of the coastal areas condition in particular the study of the vulnerability of a coastal areas will ease in highlighted any sections of a coastal areas which judged having high level of vulnerability and what are the factors that result in the vulnerability of the coastal areas. The research of coastal vulnerability of east coast of Bintan Island was conducted in September-October 2015 with observing physical and oceanographic variables consisting of coastal geomorphology, beach slope, shoreline changes and annual average of sea wave height and tidal range. Coastal vulnerability analysis using coastal vulnerability index (CVI) method by giving a score to each of the variables used in accordance with the categories set by United States Geological Survey (USGS). The results of coastal vulnerability analysis showed coastal geomorphology and beach slope are a variables with a high to very high degree of vulnerability with the vulnerability score of each variables is 4.75 and 5 (score scale range from 1-5). Coastal vulnerability index of east coast of Bintan Island ranged from 3.16-3.54 with an average 3.33 which showed the level of vulnerability of east coast of Bintan Island is in low category.Keyword: coastal vulnerability index, coastal vulnerability, east coast of Bintan Island, Oceanographic ABSTRAKKerentanan pantai merupakan kondisi dimana terdapat peningkatan proses kerusakan di wilayah pantai yang diakibatkan oleh berbagai faktor seperti aktivitas manusia dan faktor alami seperti pengaruh kenaikan muka laut, gelombang laut serta arus menyusur pantai yang mengakibatkan terjadinya proses abrasi maupun sedimentasi yang merupakan salah satu indikator adanya tekanan terhadap suatu kawasan pantai walaupun bukan berarti sebagai degradasi kondisi kawasan pantai. Analisis kerentanan pantai sangat penting untuk dilakukan, dengan melakukan kajian kondisi suatu kawasan pantai khususnya kajian mengenai kerentanan suatu kawasan pantai akan memudahkan dalam menyoroti bagian-bagian mana saja dari suatu pantai yang dinilai memiliki tingkat kerentanan yang tinggi dan faktor-faktor apa saja yang mengakibatkan kerentanan kawasan pantai tersebut. Penelitian mengenai kerentanan pantai timur Pulau Bintan dilaksanakan pada Bulan September-Oktober 2015 dengan mengamati variabel fisik dan variabel oseanografi yang terdiri dari geomorfologi pantai, kemiringan pantai, perubahan garis pantai dan rata-rata tinggi gelombang laut serta rata-rata kisaran pasang surut per tahun. Analisis kerentanan pantai menggunakan metode coastal vulnerability...

No abstract

Corrected bathimetry data is highly required to improve the quality of sea floor map, for a range of purposes including coastal environmental monitoring and management. This research was aimed to know chart datum values used for correctting bathymetry data at Bar-cheeked coral trout grouper (Plectropomus maculates) fishing ground in Lepar and Pongok Island waters 02o57’00”S and 106o50’00”E and 02o53’00”S and 107o03’00”E, respectively, South Bangka Regency, Indonesia. The study was carried out from November 2016 to October 2017, tidal data used for 15 days from September 16–30, 2017 using simple random sampling technique with the total of 845 points of measurements. To calculate tyde harmonic constituents values this study employed admiralty method resulting 10 major components. Results of this research indicated that harmonic coefficient values of M2, M2, S2, N2, K1, O1, M4, MS4, K2, and P1, were 0.0345 m, 0.0608 m, 0.0276 m, 0.4262 m, 0.2060 m, 0.0119 m, 0.0082 m, 0.0164 m, and 0.1406 m, respectively. Values of mean sea level, chart datum, and F, were 0.9620 m, 0.0500 m, and 0.0664 m, respectively, with diurnal type (F= 6.64). Correcting bathymetry values of surveyed location results a deviation about 1.2 m in depth. The calculated chart datum as well as corrected bathymetry provides information that can be used as vertical refrerence datum for generating sea floor map for determining the fishing ground area of bar-cheeked coral trout grouper. Fishing depth usually ranges between 4.2 and 40.8 m. Average water depth in the fishing ground ranged from 14.7 to 22.5 m.

No abstract

No abstract