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Jurnal Kelautan : Indonesian Journal of Marine Science and Technology
Published by Universitas Trunojoyo Madura
ISSN : 19079931     EISSN : 24769991     DOI : -
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This journal encompasses original research articles, review articles, and short communications, including: Marine and fisheries ecology and biology, Marine fisheries, Marine technology, biotechnology, Mariculture, Marine processes and dynamics, Marine conservation, Marine pollution, Marine and coastal resource management, Marine and fisheries processing technology, Salt technology, Marine geology, physical and chemical oceanography.
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Articles 10 Documents
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ANALYSIS OF SEA WATER POLLUTION IN COASTAL MARINE DISTRICT TUBAN TO THE QUALITY STANDARDS OF SEA WATER WITH USING STORET METHOD Perdana Ixbal Spanton; Abdul Aziz Saputra
Jurnal Kelautan Vol 10, No 1 (2017)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v10i1.2671

Abstract

The sea water is a component that interacts with the terrestrial environment, where sewage from the land will lead to the sea. Waste containing these pollutants will enter into coastal waters and marine ecosystems. Partially soluble in water, partially sinks to the bottom and was concentrated sediment, and partly into the body tissues of marine organisms. This study was conducted to determine the level of pollution of sea water on the coast in the district of Tuban. This research was conducted in the Coastal Water Tuban, East Java. The main material used in research on Analysis of Water Pollution in Coastal Sea on Tuban. The method used in this research is using storet method and compared to the quality standards of the Environment Decree No. 51 in 2004. Based on the analysis of testing at five sampling point’s seawater around Bodies Tuban, obtained by sea water quality measurement results either in physics, chemistry, and microbiology varied. The level of pollution of sea water around Coastal Tuban obtained by using Storet Method average value of analysis is -4.2 included in class B are lightly blackened, while using values obtained Pollution Index average pollution index of 3.60 is included in the category lightly blackened. Keywords: Analysis of the pollution level of seawater on the coast in Tuban, Quality Standards of Sea Water, Storet Method.
BIODIVERSITAS IKAN KARANG DI WILAYAH BENTANG LAUT LESSER SUNDA BANDA (KAB. FLORES TIMUR, ALOR DAN MALUKU BARAT DAYA), INDONESIA Fakhrizal Setiawan; Muttaqin Azhar; E Estradivari; Efin Muttaqin; Sukmaraharja A Tarigan; Tutus Wijanarko; K Khaifin; Nara Wisesa; Aditano Y Retrawimbi; M Muhidin; Hedra Akhrari; Sanca Sadewa
Jurnal Kelautan Vol 10, No 1 (2017)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v10i1.1349

Abstract

Sebanyak 62 titik penyelaman dilakukan untuk memberi gambaran mengenai ikan karang yang terdapat di wilayah perbatasan Propinsi NTT dan Maluku di Indonesia. Tutupan karang hidup menunjukan umumnya kondisi tutupan karang berada pada kategori baik dengan nilai rata-rata 62,51%. Ikan karang yang ditemukan dalam survei ini terdiri dari 468 spesies dalam 47 Famili ikan karang dimana biomassa ikan karang tertinggi terdapat Kab. MBD (Rata-rata 12.476,32 Kg/Ha) sedangkan yang terendah terdapat di Kab. Flores Timur (rata-rata 652,83 Kg/Ha). Nilai Kelimpahan ikan karang tertinggi terdapat di Kab. MBD (rata-rata 13.308 Ind/Ha) dan yang terendah terdapat di Kab. Flores Timur (rata-rata 1.502.23 Ind/Ha). Struktur komunitas ikan karang berdasarkan indeks shanon-weinner (H’) berada kategori sedang, nilai indeks keseragaman (E) masuk kategori labil dan nilai dominansi (C) masuk dominansi rendah sehingga ekosistem masih dalam kondisi baik. Kesamaan spesies ikan karang menggunakan hasil cluster analysis pada taraf penskalaan 66,37 % dan MDS (Multi Dimensional Scalling) mengelompokkan ikan karang kedalam 2 grup yaitu ikan karang di wilayah Kab. Alor dan Flores Timur dan Kabupaten Maluku Barat Daya di kolompok lainnya. Hasil dari analisis klatser dan MDS memperlihatkan Kab. Alor dan Flores timur di Provinsi NTT yang masuk wilayah geografis Lesser Sunda memiliki perbedaan ikan karang dengan Kab. Maluku Barat Daya di Provinsi Maluku yang secara geografis masuk area Banda seascapes. Secara keseluruhan ikan karang di Kab. MBD memiliki potensi yang sangat tinggi dilihat dari kelimpahan, biomasa dan nilai ekologi lainnya. Lokasi ini bisa dikembangkan menjadi sumber protein hewani yang potensial bagi masyarakat disana maupun tingkat nasional.Kata kunci: Ikan karang, Biomassa, kelimpahan, Lesser sunda, Flores Timur, Alor, Maluku Barat Daya. REEF FISHES BIODIVERSITY OF LESSER SUNDA-BANDA SEASCAPE (EAST FLORES, ALOR AND SOUTH WEST MALUKU DISTRICT) IN INDONESIAABSTRACT A total of 62 dive sites were made to provide an overview of reef fish found in the border region of the Province of NTT and Maluku in Indonesia. Live coral cover shows the general condition of the coral cover is in good category with an average value of 62.51%. Reef fish found in this survey consists of 468 species in 47 Famili reef fish reef where fish biomass is highest Kab. MBD (average 12.476,32 kg.ha-1), while the lowest was in the district. East Flores (an average of 652,83 kg.ha-1). The value of reef fish abundance is highest in the district MBD (average 13.308 ind.ha-1) and the lowest was in the district East Flores (average 1.502,23 ind.ha-1). Reef fish community structure based-weinner Shannon index (H') was the medium category, evenness indice value (E) in the category volatile and the value of dominance (C) enters a low dominance so that the ecosystem is still in good condition. The similarity of species of reef fish using cluster analysis results at the level of scaling 66.37% and MDS (Multi Dimensional Scaling) breaks down into two groups of reef fish that reef fish in the district Alor and East Florest and district of Southwest Maluku in other group. Results of the cluster analysis and MDS showed Alor and East Flores regency in NTT Prvince incoming Lesser Sunda seascapes have different reef fish by the District of Southwest Maluku in Maluku Province incoming Sunda Banda seascapes. Overall reef fish in the district. MBD has a very high potential views of abundance, biomass and other ecological values. This location can be developed into a potential source of animal protein for the people there as well as national level. Keywords: Reef fishes, biomass, abundance, Lesser Sunda, sunda banda seascape
KARAKTERISTIK HIDRODINAMIKA DI PERAIRAN TELUK AMBON UNTUK MENDUKUNG WISATA SELAM Koko Ondara; Guntur Adhi Rahmawan; Ulung Jantama Wisha
Jurnal Kelautan Vol 10, No 1 (2017)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v10i1.2170

Abstract

Teluk Ambon terbagi oleh dua ambang yaitu Teluk Ambon Dalam dan Teluk Ambon Luar. Teluk Ambon kaya akan potensi baharinya baik dari keunikan ikan, terumbu karang maupun benda-benda seperti kapal tenggelam yang bisa dikembangkan potensinya sebagai wisata bahari. Penelitian kali ini bertujuan untuk mengetahui karakteristik gelombang dan pasang surut yang ada di perairan Teluk Ambon dengan menggunakan simulasi numerik. Metode yang digunakan adalah metode purposive kuantitatif, data primer terdiri dari batimetri, pasang surut dan angin, sedangkan data sekunder terdiri dari data peramalan pasang surut menggunakan MIKE 21, Flow Model FM Hydrodynamic Module digunakan untuk mensimulasikan pola pasang surut dan arus yang kemudian dijadikan sebagai input dalam modul spectral wave MIKE 21. Dari data pengolahan pasut didapatkan tipe pasut Teluk Ambon adalah condong harian ganda dengan nilai F= 0.602, Mean Sea Level sebesar 124.76 cm, Zo 148.72 cm dan nilai Chart Datum -23.96 cm. Kecepatan arus rata-rata 0.009-1.463 m/s sedangkan tinggi gelombang signifikan 0-0.00279 m. Kondisi hidrodinamika Teluk Ambon sangat mendukung dalam kegiatan wisata bahari minat khusus salah satunya adalah SS.Aquila. Kata Kunci:Hydrodinamika, SS.Aquila, Gelombang, Arus, Pasang SurutHYDRODYNAMIC CHARACTERISTICS IN AMBON BAY WATERS TO SUPPORT MARINE DIVING TOURISM Ambon Bay is divided by two thresholds, namely Teluk Ambon Dalam and Teluk Ambon Luar. Ambon bay is rich in marine potential both the unique of fisheries and coral reefs as well as the objects such as shipwreck that could be developed as a maritime tourism potential. The aim of this study is to investigate the characteristics of waves and tides in the waters of Ambon Bay (inner and outer of Ambon Bay) by using numerical simulation. The method is using purposive quantitative, the primary data are consisted of Bathymetry, Tide, and wind, while the secondary data is consisted of tide forecasting by MIKE 21, Flow Model FM Hydrodynamic Module is used to simulate tidal and current patterns that are used as input in the wave spectral module MIKE 21. From the data obtained, the tidal type of Ambon Bay waters is mixed tide prevailing semidiurnal based on Formzahl value 0. 0602 which obtained from the diurnal and semidiurnal major tide component calculation, Mean Sea Level is 124.76 cm, Zo is 148.72 cm and the value of Chart Datum is -23.96 cm. Current speed ranged from 0009-1463 m/s while the significant wave height ranged from 0-0.00279 m. Ambon Bay hydrodynamic conditions are calm and not too volatile, fortunately supportive in marine tourism activities of SS.Aquila site. Keywords: Currents, Hydrodynamics, SS. Aquila, Tides
VARIAN GENETIK Sardinella lemuru DI PERAIRAN SELAT BALI Gde Raka Angga Kartika; Aida Sartimbul; W Widodo
Jurnal Kelautan Vol 10, No 1 (2017)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v10i1.1615

Abstract

Sardinella lemuru merupakan salah satu spesies ikan yang mendominasi di perairan Selat Bali. Identifikasi Sardinella lemuru dengan sardinella lain di perairan Selat Bali hanya dibedakan berdasarkan secara morfologi, sedangkan identifikasi genetik belum pernah dilakukan dan variasi gentetik juga belum diketahui. Penelitian ini bertujuan memastikan jenis Sardinella lemuru di perairan Selat Bali dan mengetahui variasi genetik dan kekerabatannya berdasarkan  gen Cythocrome oxidase sub unit 1 (COI). Metode yang dilakukan adalah dengan mengisolasi DNA dari organ tubuh ikan lemuru dan hasilnya diamplifikasi dengan gen COI, kemudian dilakukan skuensing untuk mendapatkan sekuen data ikan  lemuru perairan Selat Bali dan urutan basa hasil skuensing dianalisis menggunakan program MEGA 5.2. Hasil menunjukan bahwa ikan lemuru di Selat Bali termasuk kedalam spesies Sardinella lemuru dengan tingkat kesamaan analisis BLAST adalah sebesar 98-100%. 11 sampel skuen ikan lemuru membentuk 2 kelompok besar. Hasil penelitian juga menunjukkan bahwa spesies Sardinella lemuru dan Sardinella longiceps merupakan speies ikan yang berbeda dengan jarak genetik 0,019Kata Kunci: COI, Sardinella lemuru, Selat BaliGENETIC VARIANCE OF Sardinela lemuru IN THE BALI STRAIT WATERSSardinella lemuru is one of the fish species that dominate in the Bali Strait. identification Sardinella lemuru with the others Sardinella in the Strait of Bali is based on morphological characteristics, whereas genetic identification of Sardinella lemuru in bali strait has not been done and variations genetic also unknown. This research aims to ascertain the type of sardinella lemuru in the bali strait and Determine genetic variation and kinship based on cytochrome oxidase subunit  (COI)  gene. The method is performed by isolating DNA from fish organs and the results are amplified by the COI gene skuensing then performed to obtain the data sequence of Sardinella lemuru Bali Strait and analyzed using the program MEGA 5.2. Results showed that lemuru in Bali Strait is sardinella lemuru species with the degree of similarity BLAST analysis of 98-100%. 11 samples skuen lemuru forming two large clad. The results also showed that the species Sardinella lemuru and Sardinella longiceps  different speies with genetic distance 0,019.Keywords: COI, Sardinella lemuru, Bali Straits
POLA SEBARAN SEDIMEN DASAR BERDASARKAN KARAKTERISTIK MORFOLOGI DAN HIDRO-OSEANOGRAFI MENGGUNAKAN MODEL INTERPOLASI DAN SIMULASI NUMERIK DI PERAIRAN UTARA PULAU SIMEULUECUT Ulung Jantama Wisha; Wisnu Arya Gemilang; Guntur Adhi Rahmawan; Gunardi Kusumah
Jurnal Kelautan Vol 10, No 1 (2017)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v10i1.1618

Abstract

Pulau Simeulue Cut merupakan kawasan Konservasi yang nantinya akan diarahkan untuk Daerah Perlindungan Laut (DPL) dan Taman Wisata Bahari (TWB), sehingga diperlukan Managemen Plan Kawasan Konservasi Laut Daerah. Tujuan dari penelitian ini adalah untuk mengetahui sebaran sedimen cross-shore di pesisir Pulau Simeulue cut berdasarkan kajian batimetri dan arus pasang surut. Metode penelitian yang digunakan adalah metode studi kasus untuk mengetahui kedalaman, pola sebaran sedimen permukaan dasar laut dan kondisi oseanografi fisika di perairan Simeuluecut secara kualitatif. Hasil pemeruman dianalisis secara spasial dengan menggunakan software Surfer 10 dan ArcGIS 10, Pengukuran arus dan pasang surut dengan menggunakan alat ADCP dan simulasi numerik hidrodinamika dengan menggunakan software MIKE 21 dan pengolahan data pasang surut dengan metode admiralty. Kedalaman perairan berkisar antara 0 - 26 meter dan kelerengan berkisar antara 10% - 15%, sedimen permukaan dasar diperoleh tiga satuan sedimen yaitu pasir kasar, satuan pasir sedang dan satuan pasir halus lanauan (silty sand), verifikasi hasil permodelan didapatkan RMSE sebesar 11,7 %. Kecepatan arus berkisar antara 0 - 0,02 m.s-1pada saat surut menuju pasang dan berkisar antara 0-0,006 m.s-1 pada saat pasang menuju surut, untuk kecepatan arus longshore berkisar antara 0,006 - 0,027 m.s-1 pada kondisi surut menuju pasang dan berkisar antara 0,001 - 0,006 m.s-1 pada kondisi pasang menuju surut, hasil pasang surut didapatkan nilai MSL sebesar 12,53 meter dan tidal range sebesar 2,2 meter, Kondisi oseanografi mempengaruhi distribusi sedimen cross-shore di bibir pantai dan secara langsung mempengaruhi kondisi batimetri di perairan Simeuluecut.Kata Kunci: Batimetri, hidrodinamika, sedimen, Simeuluecut, spatial analisis DISTRIBUTION PATTERNS OF BOTTOM SEDIMENT BASED FROM MORPHOLOGICAL AND HYDRO-OCEANOGRAPHY CHARACTERISTICS USING INTERPOLATION AND NUMERICAL SIMULATION MODEL IN SIMEULUECUT ISLAND NORTHERN WATERS Simeuluecut Island is a conservation area which will be directed as Marine Protected Areas and Wildlife Marine Tourism, it needs to manage the plan of Regional Marine Conservation Area. The purpose of this study was to determine the distribution of bed sediment in the Simeuluecut coastal area based on the study of the bathymetry and the tidal current condition. The method employed is case study method to determine the depth, the distribution pattern of the seabed sediment and physical oceanographic conditions in the Simeuluecut waters qualitatively. The sounding results of bathymetry survey are analyzed spatially, the hydrodynamic condition is simulated by using flow model fm and tide data is analyzed by admiralty method. The depth of the water ranged from 0-26 meters and slope ranged from 10%-15%, obtained three units of surface bed sediment, that are coarse sand, medium sand, and silty sand. Current velocity ranged from 0 to 0,02 m.s-1 at low tide towards the high tide condition and ranged from 0-0,006 m.s-1 at high tide towards low tide condition, the longshore current velocity ranged from 0.006-0,027 m.s-1 at the high tide and ranged from 0,001-0,006 m.s-1 at low tide condition, the MSL value obtained 12,53 m and the tidal range reach 2,2 m, oceanographic conditions has an influence on the  bed sediment distribution in the nearshore area and directly affect to the morphology change occurrence in the Simeuluecut waters. Keywords: Bathymetry, hydrodynamic, Sediment, Simeuluecut, Spatial analysis
IDENTIFIKASI PROFIL DASAR LAUT MENGGUNAKAN INSTRUMEN SIDE SCAN SONAR DENGAN METODE BEAM PATTERN DISCRETE-EQUI-SPACED UNSHADED LINE ARRAY Muhammad Zainuddin Lubis; Wenang Anurogo
Jurnal Kelautan Vol 10, No 1 (2017)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v10i1.2563

Abstract

Laut Punggur merupakan laut yang terletak di Batam, Kepulauan Riau yang mempunyai beragam habitat objek,dan bentuk struktur bawah laut yang memiliki dinamika laut yang sangat tinggi. Side scan sonar (SSS) merupakan instrumen pengembangan sistem sonar yang mampu menunjukkan dalam gambar dua dimensional permukaan dasar laut dengan kondisi kontur, topografi, dan target secara bersamaan. Metode Beam Pattern Discrete-Equi-Spaced Unshaded Line Array digunakan untuk menghitung beam pattern dua dimensi yang tergantung pada sudut dari gelombang suara yang masuk dari sumbu array yang diterima tergantung pada sudut di mana sinar suara pada array. Penelitian ini dilakukan pada Desember 2016 di laut Punggur,Batam, Kepulauan Riau-Indonesia, dengan koordinat 104 ° 08,7102 E dan 1° 03,2448 N sampai 1 ° 03.3977 N dan 104 ° 08,8133 E, menggunakan instrumen Side Scan Sonar C-Max CM2 Tow fish dengan frekuensi 325 kHz. Hasil yang diperoleh dari perekaman terdapat 7 target, dan Beam pattern dari metode Beam Discrete-Equi-Spaced Unshaded Line Array target 4 memiliki nilai tertinggi pada directivity Pattern yaitu 21.08 dB. Hasil model beam pattern ini memiliki nilai pusat pada incidence angle (o) terhadap Directivity pattern (dB) tidak berada di nilai 0 ataupun pada pusat beam pattern yang dihasilkan pada target 6 dengan nilai incident angle -1.5 o dan 1.5o mengalami penurunan hingga -40 dB. Karakteristik sedimen dasar perairan di laut punggur ditemukan lebih banyak pasir. Hasil metode Beam Discrete-Equi-Spaced Unshaded Line Array ditemukan bangkai kapal tenggelam.Kata Kunci: Side Scan Sonar, Beam Pattern Discrete-Equi-Spaced Unshaded Line Array, Incidence angle, Directivity pattern IDENTIFICATION OF SEABED PROFILE USING SIDE SCAN SONAR INSTRUMENT WITH PATTERN DISCRETE-EQUI-SPACED UNSHADED LINE ARRAY METHODRiau Islands is an island that has a variety of habitat objects, and forms of submarine structures that have a very high ocean dynamics, Punggur Sea is the sea which was a sea of Riau Island in Indonesia. Side scan sonar (SSS) is an instrument based on sonar system wich capable of showing the image of two-dimensional surface of the seabed with contour conditions, topography, and the underwater target simultaneously. Beam Pattern Discrete-equispaced unshaded Line Array Method is used to compute the two-dimensional beam pattern which depends on the angle of the incoming sound waves from the axis of the array are acceptable depending on the angle at which the sound beam array. This research was conducted in December 2016 in the sea Punggur, Batam, Riau Islands-Indonesia, with coordinate system  104 ° 08,7102 E and 1° 03,2448 N until 1 ° 03.3977N and 104 ° 08,8133 E,  using Side Scan Sonar Tow C-Max CM2 fish instruments with a frequency of 325 kHz. The Results obtained from the recording there are 7 targets, and Beam pattern of Discrete-Beam method Equi-Spaced unshaded Line Array in targets 4 have the highest value in the Pattern is 21:08 dB directivity. The results of the model's beam pattern have anaxis value at the incidence angle (o) of the directivity pattern (dB) are not on the value 0 or the central beam pattern generated on the target 6 with incident angle -1.5 o and 1.5o have declined by -40 dB. Characteristics of bottom sediment in the sea waters Punggur found more sand.Discrete-method result Beam Equi-Spaced unshaded Line Array discovered the sunken wreck. Keywords: Side Scan Sonar, Beam Pattern Discrete-Equi-Spaced Unshaded Line Array, Incidence angle, Directivity pattern
KONDISI HIDRO-OSEANOGRAFI PERAIRAN PULAU BINTAN (STUDI KASUS PERAIRAN TELUK SASAH) Sudra Irawan
Jurnal Kelautan Vol 10, No 1 (2017)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v10i1.2145

Abstract

Pada perairan Teluk Sasah, Kecamatan Seri Kuala Lobam, Kabupaten Bintan rencananya akan dibangun pelabuhan oleh pemerintah, termasuk pengembangan sektor kepariwisataan. Dalam perencanaan pembangunan tersebut membutuhkan kajian tentang kondisi topografi pesisir disekitar lokasi, tinggi gelombang, pasang surut, pola arus, dan batimetri (kedalaman). Berdasarkan hasil penelitian diperoleh topografi pesisir wilayah Teluk Sasah relatif datar dengan ketinggian rata-rata 4-5 meter diatas permukaan laut. Pada peta topografi terebut terlihat terdapat detil-detil yang diambil seperi ada tumbukan pasir memiliki dengan ketinggian 6 sampai 7 meter diatas pemukaan laut. Ada juga detil topografi berupa rawa yang memiliki ketinggian 3 sampai 4 meter dari permukaan laut. Gelombang tinggi terjadi pada bulan Nopember sampai Januari sekitar 1,9 meter dan gelombang rendah sekitar bulan Mei sampai Agustus sekitar 1,6 meter. Gelombang tertinggi terjadi pada bulan Desember mencapai 3,3 meter. Pasang surut perairan di lokasi kegiatan yaitu mixed tide prevailing semidiurnal). Arus laut umumnya dipengaruhi oleh pasang surut air laut. Arus laut arus bergerak dari barat laut menuju ke arah tenggara dengan kecepatan sekitar 0,02 m/s sampai 0,32 m/s atau 2 cm/s sampai 32 cm/s. Kedalaman bervariasi dari 2 meter sampai 19 meter dengan ketinggian air pada saat pemeruman sekitar 2,9 meter dari pengamatan pasang surut. Bentuk dasar laut, semakin jauh dari garis pantai maka akan semakin dalam hingga mencapai kedalaman 19 meter, dilihat dari garis kontur batimetri perubahan kedalaman cukup signifikan.Kata Kunci: Pulau Bintan, topografi, gelombang, pasang surut, pola arus, batimetri.HYDRO-OCEANOGRAPHY CONDITION OF BINTAN ISLAND WATERS (CASE STUDY OF SASAH STRAIT WATERS)In the planning of port development requires the study of hydro-oceanographic conditions such as wave, tidal, current patterns, bathymetry and topography. Based on the results obtained by coastal topography is relatively flat Sasah Gulf region with an average height of 4-5 meters above sea level. Terebut visible on topographic maps are details that are taken are like no sandbank has a height of 6 to 7 meters above sea level. Terrain beaches also swamp which has a height of 3 to 4 meters above sea level. High waves occur from November to January was 1.9 meters high and low wave around May to August of about 1.6 meters. The highest wave occurred in December reached 3.3 meters. Character tide of the study sites prevailing type of mixed semidiurnal tide). Ocean currents are generally influenced by the tide. Ocean currents flow moving from the northwest toward the southeast at a speed of about 0.02 m / s to 0.32 m / s or 2 cm / s to 32 cm / s. Varies in depth from 2 meters to 19 meters with a height of water at pemeruman approximately 2.9 meters of tide observations. The basic shape of the ocean, the farther away from the coastline it will be deepened until it reaches a depth of 19 meters, seen from bathymetric contour line depth changes significantly. Keyword: Bintan Island, topography, wave, tidal, current patterns, bathymetry.
SCREENING OF TOXIC MARINE NITZSCHIA SPECIES (BACILLARIOPHYCEAE) IN MALAYSIA Suriyanti Su Nyun Pau; Dzulhelmi Muhammad Nasir; Gires Usup
Jurnal Kelautan Vol 10, No 1 (2017)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v10i1.2635

Abstract

Amnesic Shellfish Poisoning (ASP) is a type of intoxication caused by the neurotoxin domoic acid (DA). The diatom genus Nitzschia is capable of producing this toxin. Screening for the presence of toxic Nitzschia spp. was carried out at various estuaries in Malaysia. Nitzschia-like cells were isolated and established into clonal cultures. Late stationary phase of cultures were harvested and tested for toxin production using HPLC. Toxin production and compound was verified by LC-MS. From the analyses, at least three cultures were detected with DA, while the rest of the cultures did not show detectable amounts of DA. The localities of the toxic species are Johor and Sabah. Here we conclude that toxic Nitzschia species are present in Malaysian water.Keywords: diatom, estuary, intoxication, safety, toxic 
DISTRIBUSI SEDIMEN DASAR SEBAGAI IDENTIFIKASI EROSI PANTAI DI KECAMATAN BREBES MENGGUNAKAN ANALISIS GRANULOMETRI Wisnu Arya Gemilang; Ulung Jantama Wisha; Guntur Adhi Rahmawan
Jurnal Kelautan Vol 10, No 1 (2017)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v10i1.2156

Abstract

Dinamika kawasan pesisir Kecamatan Brebes berupa bencana abrasi dan akresi yang terjadi memiliki dampak besar terhadap kerusakan kawasan mangrove dan pesisir. Fenomena abrasi dan akresi yang terjadi dipengaruhi oleh parameter oseanografi yang dapat mempengaruhi sebaran sedimen di pesisir. Penelitian ini bertujuan untuk mengetahui karakteristik pembangkit fenomena abrasi dan akresi di pesisir Kecamatan Brebes serta bentuk mitigasi yang tepat untuk mengurangi bencana abrasi. Metode yang digunakan adalah descriptive kuantitatif dan analisis yang dilakukan adalah pengukuran arus, pengukuran pasang surut, pemetaan batimetri, analisis ukuran butir sedimen dan pemodelan hidrodinamika 2 dimensi. Sedimen berupa pasir, lanau, dan pasir lanauan dengan nilai rerata ukuran butir 5.00 phi – 8.00 phi. Kecepatan arus sepanjang pantai hasil model pada kondisi purnama berkisar 0-0,12 m.s-1 dan pada saat perbani berkisar antara 0-0,08 m.s-1, dengan dominasi arah arus menuju ke Timur dan Timur laut. Perlu dilakukan penataan ulang terhadap kawasan mangrove dan bangunan pelindung pantai serta melakukan pencodetan terhadap sungai – sungai utama yang merupakan sumber pembawa material sedimen sehingga dapat memberikan suplay endapan sedimen di bagian pesisir.Kata Kunci: Brebes, erosi, arus sepanjang pantai, mitigasi, sedimenBED SEDIMENT DISTRIBUTION FOR IDENTIFICATION OF THE COASTAL EROSION IN BREBES SUBDISTRICT USING GRANULOMETRI ANALYSISThe dynamics of erosion and accretion in the coastal area of Brebes Subdistrict have many impacts on mangrove destruction and coastal region. The erosion and accretion are influenced by oceanography parameters that can affect the distribution of coastal sediments. The aims of this research were to determine the characteristics of the phenomenon of erosion and accretion in coastal Brebes Subdistrict and shape appropriate mitigation to reduce the erosion. This research is done with the bed sediment sampling using grab sampler for 26 sampling point. Current and tide measurement are conducted wih ADCP deployment for 15 days’ measurement. Sediment characteristic analysis done with granulometri and statistic analysis. The average of sediment sorting is 1.21, skewness is 0.088 and the kurtosis is 3.76. Generally, bed surface sediment distribution pattern is dominated by clay to sand, the grand size distribution of sediments are sand, silt, sandy silt and silty sand. Longshore current speed ranged between 0-0.12 m.s-1 at the spring tide condition and ranged between 0-0.08 m.s-1at the neap tide condition, the domination of current direction towards to the East and Northeast. The mitigation is very needed to rearrange the mangrove areas, build the coastal protection and recover the main river line which is the sourceof the sediment materials, so that can be provide the supply of sediment deposition in the coastal area. Keywords: Brebes, Erosion, Longshore Current, Mitigation, Sediment
MODEL DINAMIK TINGKAT KERENTANAN PANTAI PULAU POTERAN DAN GILI LAWAK KABUPATEN SUMENEP MADURA Maulinna Kusumo Wardhani; Akhmad Farid
Jurnal Kelautan Vol 10, No 1 (2017)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v10i1.2427

Abstract

Pulau Poteran dan Pulau Gili Lawak Kabupaten Sumenep merupakan pulau-pulau kecil yang berada di sebelah barat Pulau Madura dengan kawasan darat dan perairan yang cukup potensial. Tujuan dari penelitian ini adalah pembuatan model dinamik kerentanan pantai pulau-pulau kecil tersebut berdasarkan aspek ekologi, sosial dan ekonomi sebagai upaya awal menetukan perencanaan pengelolaan yang berkelanjutan dan memetakannya. Analisis yang akan dilakukan pada penelitian ini merupakan penetapan variabel-variabel indeks kerentanan pantai pulau-pulau kecil (PPK) dan memodelkan dinamika kerentanan pantai pulau-pulau tersebut. Variabel-variabel tersebut meliputi, (1) Keterpaparan (Exposure), (2) Kepekaan (Sensitivity) dan (3) Daya Adaptasi (Adaptive Capacity). Pengembangan model simulasi dinamis ini bertujuan untuk mempelajari tingkat kerentanan pantai di Pulau Poteran dan Gili Lawak Kecamatan Talango Kabupaten Sumenep didasarkan pada beberapa asumsi, yaitu: (1) model tersebut berada dalam kondisi tetap atau stabil (steady state), (2) model tersebut dianggap suatu sistem yang tertutup (closed system). Parameter kenaikan muka laut rata-rata tiap tahun, tingkat erosi dan kepadatan penduduk merupakan parameter dinamik yang menyebabkan nilai kerentanan tinggi di Pulau Poteran, sedangkan parameter lamun mengakibatkan dimensi daya adaptif diPulau Gili Lawak menjadi lebih tinggi dari dimensi yang lain.Tingkat kerentanan pantai Pulau Poteran dan Gili Lawak berada pada kategori sedang dan berdasarkan model dinamik yang dibuat kedua pulau tersebut akan berada pada tingkat kerentanan sangat tinggi pada tahun ke 3 jika tidak dilakukan peningkatan kapasitas adaptif habitat pesisir. Kata Kunci: Model Dinamik, Kerentanan, Pulau KecilDYNAMICS MODEL OF COASTAL VULNERABILITY OF POTERAN AND GILI LAWAK ISLAND, SUMENEP, MADURAPoteran and Gili Lawak Island Sumenep Regency is a small islands that located in the west of Madura with potential terrestrial and marine areas. The purpose of this research is the dynamic modeling of coastal vulnerability of small islands are based on ecological, social and economic as an initial effort determine the sustainable management planning and mapping. The analysis will be performed in this study is the determination of variables coastal vulnerability index for small islands and the dynamics models of the vulnerability for coastal islands. These variables include, (1) Exposure, (2) Sensitivity and (3) Adaptive Capacity. The development model of dynamic simulation was done to evaluate the beach vulnerability on the Poteran and Gili Lawak Island at Talango District Sumenep based on several assumptions, they are (1) the model was in a state of permanent or stable (steady state), (2) the model considered a closed system. Mean sea level rise per year, erosion rate and population density are dynamic parameters that causes high of vulnerability value in Pulau Poteran, while the sea-grass parameter on Gili Lawak Island causes the value of adaptive capasity demention is higher than other dimensions.The level of beach vulnerability of Poteran and Gili Lawak Island at middle category and was based on a dynamic model created two islands will be at a very high level of vulnerability in the third yearif not increase the adaptive capacity of coastal habitats. Keywords: Dynamic Model, Beach Vulnerability, Small Island

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