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INDONESIA
Jurnal Kelautan : Indonesian Journal of Marine Science and Technology
Published by Universitas Trunojoyo Madura
ISSN : 19079931     EISSN : 24769991     DOI : -
Core Subject :
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.
Arjuna Subject : -
Articles 394 Documents
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APPLICATION OF GIS FOR ASSESSING PRAWN FARM DEVELOPMENT IN TULLY-CARDWELL, NORTH QUEENSLAND Zainul Hidayah
Jurnal Kelautan Vol 5, No 1: April (2012)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v5i1.933

Abstract

In recent years, Geographical Information Systems (GIS) has been employed for various studies in aquaculture where geographical factors, natural resources and human activities are involved This study is intended to become a preliminary investigation for the development of prawn farm in Tully-Cardwell region of North Queensland. The aim of this research is to ident suitable sites for development of prawn farming using GIS multi-based criteria based on the basic requirements for prawn farming. Further analysis explains that 36,006.67 Ha of area which consists of 52 polygons are identified as suitable for the development of prawn farm in the region.Keywords: GIS, prawn farm, Queensland
KUALITAS AIR LAUT UNTUK MENDUKUNG WISATA BAHARI DAN KEHIDUPAN BIOTA LAUT (Studi Kasus: Sekitar Kapal Tenggelam Sophie Rickmers, Perairan Prialaot Sabang) Try Al Tanto; Nia Naelul HR; I Ilham
Jurnal Kelautan Vol 11, No 2 (2018)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v11i2.4276

Abstract

Perairan Prialaot-Sabang direncanakan sebagai lokasi kegiatan wisata bahari. Di perairan ini terdapat kapal tenggelam MS Sophie Rickmers, merupakan salah satu tujuan wisata bawah air yang banyak diminati. Perlu dilakukan kajian kualitas perairan, merupakan parameter penting suatu perairan laut terutama bagi kehidupan biota laut yang tidak terpisahkan dari aktivitas wisata bahari. Tujuannya adalah untuk mengetahui kondisi terkini beberapa parameter kualitas perairan. Pengukuran kualitas perairan dilakukan secara in-situ dan pengujian di laboratorium. Hasil yang diperoleh, yaitu nilai kecerahan perairan (8-11 m atau 80-100%), kekeruhan (rataan 0,08 NTU), pH (rataan 8,27), TDS (rataan 51,26 mg/L), salinitas (rataan 31,27‰), suhu (rataan 29,22°C), BOD.5 (rataan 0,78 mg/L), nitrit (rataan 0,0075 mg/L), amoniak (rataan 0,05 mg/L), dan logam berat (Zn, Pb, Cu, dan Cd, tidak terdeteksi dalam pengujian). Sedikit catatan untuk parameter DO, nutrien (phospat dan nitrat), dan TSS perairan. Secara umum, nilai DO (rataan 4,53 mg/L) tidak berpengaruh signifikan terhadap biota laut, namun masih kurang dari baku mutu (5 mg/L). Kondisi nutrien (phospat dan nitrat) masih bernilai tinggi (rata-rata 0,08 mg/L dan 1,17 mg/L) dan berada di atas baku mutu air laut. Untuk nilai parameter TSS perairan, memiliki nilai yang juga cukup tinggi dengan rata-rata sebesar 21,83 mg/L. Kondisi kualitas air laut sekitar kapal tenggelam MS Sophie Rickmers perairan Prialaot Sabang masih dalam kondisi yang baik untuk keperluan wisata bahari dan kehidupan biota laut. Kata kunci: kualitas air laut, wisata bahari, biota laut, kapal tenggelam sophie rickmers, SabangABSTRACTPrialaot Sabang Water is planned as marine tourism area. There is Shipwreck Site MS Sophie Rickmers. The site is which one underwater tourism that very much interested. Quality water studies is done because which one the parameter of important especially for marine life that is inseparable from marine tourism. The goal are to known the condition more water quality parameters in Shipwreck around. Measurements of water quality is done directly and testing in a labotatory also. The results are paramater as visibility (8-11 m or 80-100%), turbinity (mean 0,08 NTU), pH (mean 8,27), TDS (mean 51,25 mg/L), salinity (mean 31,27‰), temperature (mean 29,22°C), BOD.5 (mean 0,78 mg/L), nitrite (mean 0.0075 mg/L), ammonia (mean 0.05 mg/L), and heavy metals (Zn, Pb, Cu, and Cd, not detected on checking). Some other parameters must to protected as DO, nutrient (phospate and nitrate), and TSS. Generally, DO value is 4,53 mg/L not significant effect for life of sea organism, but still up down from quality standards (5 mg/L). Means of Phospate 0,08 mg/L and nitrite 1,17 mg/L are high from quality standard than life of sea organism dan marine tourism.TSS parameter has high value also is mean of 21,83 mg/L. The condition of water quality still good for life organism and marine tourism there.Key words: sea water quality, marine tourism, marine life, sophie rickmers, Sabang
PENGARUH PEMBERIAN BAKTERI Bacillus pumilus PADA RUMEN SAPI SEBAGAI PUPUK TERHADAP PERTUMBUHAN Dunaliela salina Endang Dewi Masithah; Nova Ariesma; Yudi Cahyoko
Jurnal Kelautan Vol 4, No 1: April (2011)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v4i1.892

Abstract

Dunaliella salina is one type of natural food that can be used in the hatchery business. The growth of natural food can be supported with an abundance of macro and micro nutrients. The purpose of this study to is to know pngaruh and best dose that can be used to enhance growth Dunaliella salina with cow rumen difermntasi mnggunakan Bacillus pumilus as organic fertilizer. Design research is Lengkap randomized design (CRD) followed by Duncan's Range Test. Treatment research Dunaliella salina was cultured at 3 different dose treatment, 2sebagai control (without fertilizer walne and rumen fermentation) and with 4 replications.The treatment dose of the bacteria Bacillus pumilus given are A (7.5%), B (10%), C (12.5%) as a control D (Fertilizer Walne) and E (rumen without fermentation). Results study to show that the addition of the bacteria Bacillus pumilus in rumen of cattle, mmbrikan significant effect trhadap Dunaliella salina growth. The addition of the bacteria Bacillus pumilus by 10% to mningkatkan growth of Dunaliella salina kpadatan 875,000 and is the culmination of the third day. Keyword : Dunaliella salina, Cow Rumen, Bacillus pumilus
ARAHAN PEMANFAATAN RUANG WILAYAH PESISIR UNTUK PARIWISATA DENGAN MEMANFAATAN CITRA SATELIT DAN SISTEM INFORMASI GEOGRAFIS DI SEBAGIAN BALI SELATAN Firman Farid Muhsoni
Jurnal Kelautan Vol 2, No 2: Oktober (2009)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v2i2.861

Abstract

Citra satelit dan SIG dapat dipergunakan untuk perencanaan pemanfaatan ruang wilayah pesisir. Tujuan penelitian ini adalah menginventarisasi  parameter fisik lahan  dan mengevaluasi kesesuaian lahan untuk menyusun arahan pemanfaatan ruang sebagain wilayah pesisir pantai selatan Pulau Bali. Metode yang dipergunakan adalah metode site selection, dengan memberikan skor pada masing-masing variabel. Hasil penelitian menunjukkan Citra Landsat ETM+ dapat digunakan untuk inventarisasi tipe ekosistem pesisir dengan tingkat ketelitian 64,3%. Kesesuaian lahan untuk pariwisata menunjukkan daerah yang sangat sesuai 5,23%, sesuai 46,81% dan  tidak sesuai sebanyak 47,96%. Arahan pemanfaatan lahan daerah darat yang paling dominan untuk pemanfaatan lahan sesuai untuk pemukiman dan tidak sesuai untuk pariwisata seluas 34,13%. Kata kunci : SIG, penginderaan jauh, pemilihan lokasi.
PENGARUH PASANG SURUT TERHADAP DINAMIKA PERUBAHAN HUTAN MANGROVE DI KAWASAN TELUK BANTEN Wenang Anurogo; Muhammad Zainuddin Lubis; Nurul Khakhim; Wikan Jaya Prihantarto; Lingga Renggana Cannagia
Jurnal Kelautan Vol 11, No 2 (2018)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v11i2.3804

Abstract

Luas hutan mangrove Indonesia menurun sekitar 4,5 juta ha menjadi 1,9 juta ha. Penurunan luas hutan mangrove paling dominan disebabkan oleh faktor manusia. Pemantauan tingkat kerusakan hutan mangrove dengan menggunakan metode konvensional memakan waktu lama dan mahal. Pemantauan tingkat kerusakan ini sangat penting bagi para stakeholder dalam mengelola kawasan hutan mangrove. Pemanfaatan data spasial dapat memudahkan dan mempercepat interaksi dengan benda-benda di permukaan bumi. Tahapan dalam penelitian ini meliputi tiga bagian, yaitu tahap pre-field, field dan post-field. Tahap pre-field termasuk pengumpulan data, pengolahan gambar, dan identifikasi tutupan lahan di daerah penelitian untuk setiap tahunnya. Data tutupan ekstraksi dari data citra penginderaan jauh di setiap tahun kemudian dipisahkan dari data tutupan lahan mangrove. Data tutupan lahan mangrove untuk tahun pencatatan 2017 digunakan sebagai unit analisis yang digunakan sebagai basis referensi untuk pengambilan informasi di lapangan. Tahap post-field dimaksudkan untuk memproses data yang dikumpulkan, analisis statistik, menguji keakuratan hasil perubahan dan menilai kemampuan gambar penginderaan jauh dalam mengidentifikasi hutan mangrove dan transfer fungsi utilitas mereka. Luas hutan mangrove di Kabupaten Banten sekitar 681,86 Ha. Penyebaran hutan mangrove terbesar adalah di kecamatan Tirtayasa dan Pontang. Kedua kawasan tersebut memiliki nilai persentase 29,75% dan 28,46% dari total luas hutan mangrove di Teluk Banten. Tingkat distribusi terkecil adalah Kabupaten Kramatwatu yang hanya sekitar 3,11% atau 21,19 Ha dari total luas hutan mangrove di Teluk Banten.Kata kunci: Mangrove, Dinamika perubahan mangrove, Data Spasial, Pasang SurutABSTRACTThe extent of Indonesia's mangrove forest declines from the initial area of about 4.5 million ha to 1.9 million ha. The decline in the area of mangrove forest is most dominant due to the damage caused by human factors. Monitoring the extent of mangrove forest destruction by using conventional methods takes a long time and is expensive. Monitoring this level of damage is very important for the stakeholders in managing the mangrove forest area. Utilization of spatial data can facilitate and accelerate in interacting with objects found on the surface of the earth. Stages in this research outline include three parts, namely pre-field stage, field stage and post-field stage. The pre-field stage includes data collection to be used, image processing, and land cover identification in the research area for each year of image recording. The cover data of the extraction from remote sensing image data in each recording year is then separated from mangrove land cover data. The mangrove land cover data for the recording year 2017 is then used as the unit of analysis used as the reference base for information retrieval in the field by using the sample. The post-field stage is intended to process the data collected, statistical analysis, test the accuracy of the results of changes and assess the capabilities of remote sensing images in identifying mangrove forests and transfer of their utility functions. The mangrove forest in Banten regency is about 681.86 Ha. The largest spread of mangrove forest is in Tirtayasa and Pontang sub-districts. The two sub-districts have a percentage value of 29.75% and 28.46% of the total mangrove forest area in Banten Bay. The smallest extent of distribution is in Kramatwatu District which is only about 3.11% or 21.19 Ha of the total area of mangrove forest in Banten Bay.Keywords: Mangrove, Dynamics of mangrove changes, Spatial Data, Tidal
POTENSI DAN TINGKAT PEMAFAATAN IKAN SEBAGAI DASAR PENGEMBANGAN SEKTOR PERIKANAN DI SELATAN JAWA TIMUR Nurul Rosana; Viv Djanat Prasita
Jurnal Kelautan Vol 8, No 2: Oktober (2015)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v8i2.815

Abstract

Jawa Timur (Jatim) adalah salah satu propinsi yang memiliki potensi sumberdaya perikanan laut yang terdiri dari ikan pelagis dan ikan demersal. Wilayah pengelolaan perikanan laut di Jawa Timur bagian selatan memiliki potensi yang sangat besar karena berhadapan langsung dengan samudera Hindia dan memiliki potensi ikan khususnya kelompok pelagis besar seperti tuna (Thunnus sp) dan cakalang (Katsuwonus pelamis). Untuk mengetahui informasi tentang potensi dan tingkat pemanfaatan perikanan laut di Jatim perlu dianalisis data yang ada, sehingga dapat digunakan sebagai acuan dalam mengembangkan sektor perikanan laut kedepannya dengan memperhatikan kelestarian sumberdayanya. Tujuan penelitian adalah mengetahui potensi dan tingkat pemanfaatan ikan di wilayah Selatan Jatim. Metode penelitian yang digunakan adalah metode survey dengan analisa data menggunakan metode Maximum Sustainable Yield (MSY). MSY atau potensi lestari ikan adalah besarnya jumlah stok ikan tertinggi yang yang dapat ditangkap secara terus menerus dari suatu sumberdaya tanpa mempengaruhi kelestarian stok ikan tersebut. Dengan menggunakan metode surplus produksi, potensi lestari ikan (MSY) di wilayah Selatan Jatim periode 2009-2013 adalah sebesar 219.189,453 ton. Tingkat pemanfaatan ikan di perairan Selatan Jatim tahun 2009-2013 nilai rata-ratanya sebesar 49,48% yang berarti masih dibawah nilai jumlah tangkapan yang diperbolahkan (JTB sebesar 80%). Dari nilai tingkat pemanfaatan selama 5 (lima) tahun tersebut dapat dikatakan perairan Selatan Jatim masih dalam kondisi underfishing karena tingkat pemanfaatannya masih dibawah nilai JTB (kurang dari 80%). Rata-rata nilai upaya penangkapan sebesar 577.764 trip dengan upaya optimum sebesar 523.437 trip, maka dapat disimpulkan bahwa upaya optimum lebih rendah dibandingkan dengan nilai rata-rata upaya penangkapan selama 5 (lima) tahun.Kata Kunci: CPUE, MSY, potensi, tingkat pemanfaatan, upaya UTILIZATION POTENTIAL AND LEVEL OF FISH AS A BASIS FOR DEVELOPMENT SECTOR FISHERIES IN SOUTH EAST JAVAABSTRACTJawa Timur (East Java) is one of the provinces that have the potential of marine fishery resources consisting of pelagic and demersal fish. Marine fisheries management area in the southern part of East Java has a huge potential for dealing directly with the Indian Ocean and has the potential of large pelagic fish, especially groups such as tuna (Thunnus sp) and skipjack (Katsuwonus pelamis). To find out information about the potential and the level of utilization of marine fisheries in East Java needs to be analyzed existing data, so it can be used as a reference in developing the marine fisheries sector in the future by taking into account the preservation of resources. The research objective was to determine the potential and the utilization rate of the fish in the southern region of East Java. The method used is survey method with data analysis using the Maximum Sustainable Yield (MSY). MSY or the potential for sustainable fish is the large number of fish stocks highest that can be captured continuously from a resource without affecting the sustainability of fish stocks. By using surplus production, the potential for sustainable fish (MSY) in the southern region of East Java 2009-2013 period amounted to 219,189.453 tonnes. The utilization rate of the fish in the waters of South East Java in 2009-2013 the average score of 49.48%, which means it is still below the value of the catch volume be allowed (JTB by 80%). Of the value of the utilization rate for five (5) years could be said Southern waters Java is still in a state of underfishing because the level of utilization is still below the value JTB (less than 80%). The average value of 577 764 trips fishing effort with optimum effort amounted to 523 437 trips, it can be concluded that the optimum effort lower than the average value of fishing effort for five (5) years.Keywords: CPUE, MSY, the effort, the potential, the utilization rate
ANALISIS JULAT PASANG SURUT (TIDAL RANGE) DAN PENGARUHNYA TERHADAP SEBARAN TOTAL SEDIMEN TERSUSPENSI (TSS) DI PERAIRAN TELUK PARE Ulung Jantama Wisha; Aida Heriati
Jurnal Kelautan Vol 9, No 1: April (2016)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v9i1.1066

Abstract

ANALYSIS OF TIDAL RANGE AND ITS EFFECT ON DISTRIBUTION OF TOTAL SUSPENDED SOLID (TSS) IN THE PARE BAY WATERSPare Bay conditions is closely related to the mechanism of circulation in Makasar Strait. One of the problems that occur in Pare Bay waters is increased turbidity and low dynamics of transport inside the bay, which caused silting in some parts of the bay. The aim of this study was to determine tidal range characteristics and the influence of suspended sediment distribution as analysis of the sedimentation process and siltation at Pare bay. Descriptive quantitative method was used and the survey location was based on purposive sampling method. Tidal type in Pare Bay water was mix mainly semidiurnal tides with Formzahl Value was 0.895. The value of the water level below the lowest tide (Z0) was 1036.44 cm. Mean sea level (MSL) value was 1107.97 cm. The vertical datum of MHHWS and MLLWS were 1143.47 cm and 1072.47 cm. Tidal range cycle in spring condition was 102-129,56 cm bigger than cycle in neap condition ranged from 55.53-82.47 cm. TSS concentrations ranged from 0-7.0 mg/L in the surface and ranged from 0- 10.0 mg/L in 5 meters depth. At high tide down, sediment was settling and at the time of high tide, sediment mixed back.Keywords: Pare Bay, suspended solid, tidal range, tide.ABSTRAKKondisi perairan di Teluk Pare sangat berkaitan dengan mekanisme sirkulasi di Selat Makasar, Permasalahan yang terjadi di Teluk Pare salah satunya adalah tingginya tingkat kekeruhan dan rendahnya dinamika transport didalam teluk yang menyebabkan pendangkalan di beberapa bagian teluk. Tujuan dari penelitian ini adalah mengetahui karakteristik julat pasang surut dan pengaruhnya terhadap sebaran sedimen tersuspensi sebagai analisis proses sedimentasi dan pendangkalan di perairan Teluk Pare. Metode penelitian yang digunakan adalah deskriptif kuantitatif, metode penentuan lokasi titik pengambilan sampel air yaitu metode purposive sampling. Tipe pasang surut Teluk Pare adalah campuran condong harian ganda dengan nilai bilangan formzahl sebesar 0,895. Nilai muka air dibawah surut terendah (Z0)  sebesar 1036,44 cm. Nilai mean sea level (MSL) sebesar 1107,97 cm. Datum vertikal MHHWS dan MLLWS memiliki nilai 1143, 47 cm dan 1072,47 cm. Julat pasang (tidal range) siklusan saat siklus pasang purnama yaitu 102–129,56 cm lebih besar daripada siklus pasang perbani yang berkisar 55,53-82,47 cm. Konsentrasi TSS berkisar antara 0-7,0 mg/L pada permukaan dan berkisar antara 0–10 mg/L pada kedalaman 5 meter, pada saat pasang turun sedimen sudah mulai mengendap dan pada saat pasang naik sedimen teraduk kembali.Kata kunci: julat pasang, pasang surut, sedimen tersuspensi, Teluk Pare.
LAJU PERTUMBUHAN Chaetoceros sp. PADA PEMELIHARAAN DENGAN PENGARUH WARNA CAHAYA LAMPU YANG BERBEDA Topan Sopian; Muhammad Junaidi; Fariq Azhar
Jurnal Kelautan Vol 12, No 1 (2019)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v12i1.4873

Abstract

Chaetoceros sp. merupakan pakan alami yang banyak digunakan pada unit-unit pembenihan ikan dan udang karena memiliki kandungan protein yang cukup tinggi. Salah satu masalah yang sering terjadi akhir-akhir ini adalah sulitnya memproduksi Chaetoceros sp. dalam jumlah besar karena ketidakstabilan produksi yang disebabkan oleh kualitas dan kuantitas Chaetoceros sp. yang tidak sama untuk setiap periode kultur. Penelitian ini bertujuan untuk mengetahui warna cahaya yang paling baik terhadap laju pertumbuhan Chaetoceros sp. Penelitian dilakukan dengan empat perlakuan cahaya lampu warna putih, warna hijau, warna merah, warna biru dan warna kuning yang setiap perlakuan diulang sebanyak tiga kali. Hasil penelitian menunjukkan bahwa perlakuan cahaya warna putih menghasilkan kepadatan populasi tertinggi sebesar 9,17 × sel/ml. selanjutnya perlakuan cahaya warna kuning sebesar 8,5 × sel/ml, kemudian perlakuan cahaya warna biru sebesar 5,33 × sel/ml, perlakuan cahaya warna merah sebesar 5 × sel/ml, dan terakhir perlakuan cahaya warna hijau yaitu sebesar 4,67 × sel/ml. Berdasarkan hasil penelitian ini, dianjurkan pada budidaya Chaetoceros sp. untuk meningkatkan laju pertumbuhan optimum adalah cahaya lampu warna putih.ABSTRACTChaetoceros sp. is a natural food that is widely used in fish and shrimp hatchery units because it has a fairly high protein content. One of the problems that often occurs lately is the difficulty of producing Chaetoceros sp. in large quantities due to production instability caused by the quality and quantity of Chaetoceros sp. which is not the same for each culture period. This study aims to determine the best color of light on the growth rate of Chaetoceros sp. The study was conducted with four white light, green, red, blue and yellow light treatments, each of which was repeated three times. The results showed that white light treatment produced the highest population density of 9,17 × cells / ml. then the yellow light treatment is 8,5 ×   cells / ml, then the blue light treatment is 5,33 × cells / ml, the red light treatment is 5 × cell / ml, and finally the light treatment of green is 4,67 × cells / ml. Based on the results of this study, it is recommended for the cultivation of Chaetoceros sp. to increase the optimum growth rate is white light. Keywords: Chaetoceros sp., Growth rate, natural feed, color of light
PENGAMATAN KADAR SENYAWA POLISIKLIK AROMATIK HIDROKARBON (PAH): (BENZO [a] PYREN, BENZO [a] ANTRASEN, BENZO [b] FLUORANTEN, DI-BENZO [a,h] ANTRASEN, DAN BENZO [g,h,i] PERYLEN) DALAM AIR LAUT DI TELUK JAKARTA E Edward
Jurnal Kelautan Vol 10, No 2 (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.v10i2.2703

Abstract

Pengukuran kadar senyawa polisiklik aromatik hidrokarbon (PAH): Benzo[a]Pyren, Benzo[a] Antrasen, Benzo[b]fluoranten, Di-benzo[a,h]Antrasen, dan Benzo[g,h,i]Perylen dalam air laut di Teluk Jakarta telah dilakukan pada bulan Maret, Mei 2013, Maret dan Juli 2011. Tujuannya adalah untuk menentukan tingkat pencemaran kelima senyawa PAH tersebut dalam air laut dalam kaitannya dengan perlindungan biota laut. Contoh air laut diambil dengan menggunakan alat pengambil contoh air (water sampler) di 12 stasiun penelitian. Posisi stasiun ditentukan dengan menggunakan GPS. Contoh dianalisis dengan menggunakan khromatografi gas. Hasil penelitian menunjukkan kadar ke lima senyawa tersebut pada bulan Maret lebih tinggi dibandingkan dengan Mei dan Juli. Kadar kelima senyawa tersebut telah melebihi nilai ambang batas yang aman untuk kehidupan biota laut. Keyword: Teluk Jakarta, air laut, polisiklik aromatik hidrokarbon, pengamatanABSTRACTMeasurement of polycyclic aromatic hydrocarbons (PAHs) compound concentration: Benzo[a] Pyrene, Benzo[a]Anthracene, Benzo[b]Fluoranthene, Di-Benzo[a,h]Anthracene, and Benzo [g,h,i] Perylene in seawater of Jakarta Bay were carried out in March, May 2013, March and April 2011. The purpose of this research was to determined the level of pollution  of the five PAH compound in seawater  in relation to the protection of marine organisms. Sea water samples  have taken by using a water sampler at 12 research stations. Station positions is determined by using Geographic Position System (GPS). All samples analyzed by using Gas Chromatography. The results of this research showed that the concentration of that fifth PAH compounds in seawater in March were higher compared to May and July. The content of that fifth compound has exceeded the safely threshold value for marine organism life. Keyword: Jakarta Bay,  seawater, polycyclic aromatic hydrocarbon, observation
Corrosion Behavior of Mild Steel in Seawater from Karangsong & Eretan of West Java Region, Indonesia Gadang Priyotomo; Lutviasari Nuraini; Siska Prifiharni; S Sundjono
Jurnal Kelautan Vol 11, No 2 (2018)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v11i2.4335

Abstract

The corrosion behavior of mild carbon steel, has been investigated using an immersion test and energy-dispersive X-ray spectroscopy in solutions from the sites of Karangsong and Eretan, Northern Coast of West Java Region, Indonesia. As reference, solutions of 3.5% and 5% NaCl were prepared. Salinity, conductivity, and total dissolved solids (TDS) were measured. It was found that uniform corrosion observed on mild steel during the immersion test. Corrosion resistance of alloys decreases with increasing exposure time in natural seawater solutions. Since magnitudes of conductivity, salinity and TDS of all test solutions are similar, it implied that chloride ion have primary role for inducing the corrosion risk of mild steel. That parameter hinders the formation of stable passive film on the surface of corroded mild steel.Key words: conductivity; immersion test; mild steel; salinity; seawater; total dissolved solids.

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