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INDONESIA
Jurnal Segara
Published by Kementerian Kelautan dan Perikanan RI
ISSN : 19070659     EISSN : 24611166     DOI : -
Core Subject : Science, Social,
Earth & Planetary Sciences Environmental Science Materials Science & Nanotechnology
Jurnal SEGARA (p-ISSN: 1907-0659, e-ISSN: 2461-1166) adalah Jurnal yang diasuh oleh Pusat Riset Kelautan, Badan Riset dan Sumber Daya Manusia Kelautan dan Perikanan (BRSDMKP), Kementerian Kelautan dan Perikanan – KKP, dengan nomenklatur baru Pusat Riset Kelautan, Badan Riset dan Sumber Daya Manusia Kelautan dan Perikanan, KKP dengan tujuan menyebarluaskan informasi tentang perkembangan ilmiah bidang kelautan di Indonesia, seperti: oseanografi, akustik dan instrumentasi, inderaja,kewilayahan sumberdaya nonhayati, energi, arkeologi bawah air dan lingkungan.
Arjuna Subject : -
Articles 146 Documents
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The Suitability Of Coastal Area Development Based On Minawisata Concept in Pacitan District Syahrial Nur Amri; Taslim Arifin
Jurnal Segara Vol 13, No 2 (2017): Agustus
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2724.505 KB) | DOI: 10.15578/segara.v13i2.6441

Abstract

Minawisata concept is the implementation and integration of efforts to optimize the utilization of marine and coastal resources with action to maintain the sustainability and value of sustainability. This study aimed to determine the suitability of the coastal land development in Pacitan District based on the potential of marine and coastal areas in accordance to the minawisata concept. Study area covered seven districts along the coastline of Pacitan District, East Java Province, namely Donorejo, Pringkuku, Pacitan, Kebonagung, Tulakan, Ngadirejo, and Sudimoro District. The methodology used in this study is a combination of Geographic Information Systems analysis, satellite imagery interpretation, and field data processing. This study is limited to the identification of the potential of marine and coastal area, the suitability of land use, and the suitability of coastal area development based on the minawisata concept. The results show that there are three dominant utilizations of marine and coastal areas in Pacitan District, including: Marine Aquaculture, Capture Fisheries, and Beach Tourism. Based on the analysis on suitability of the marine and coastal area, seven districts in Pacitan are suitable for fisheries and beach tourism, while only two districts were suitable for marine aquaculture with several conditions, namely Pacitan District and Ngadirejo District. The implementation of minawisata concept for coastal area suitability based on the analysis of seven identified districts is feasible for further development.
MODELING TIDAL CURRENT OF BANTEN BAY DURING TRANSITIONAL MONSOONS 2015-2016 Ahmad Bayhaqi; Ulung Jantama Wisha; Dewi Surinati
Jurnal Segara Vol 14, No 2 (2018): Agustus
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2025.811 KB) | DOI: 10.15578/segara.v14i2.6452

Abstract

Hydrodynamic condition of Java sea as a part of Indian-Pacific throughflow system influenced by monsoon will affect the condition of Banten Bay such as tidal current. Bordered by Java Sea makes Banten Bay preoccupied with fisheries and shipping activities, so the information regarding current pattern that is tidal current is very necessary. This study aims to simulate the tidal current pattern using flow model fm as a numerical approach. Two-dimensional hydrodynamic model was employed to perform the simulation of tidal current. Model was validated by using current and tidal observation data which was taken on September 2015 and April 2016. The result shows that the current moves southwestern toward the land during high neap and high spring tidal conditions ranged 0 - 0.142 m/s at the first transitional monsoon and 0 - 0.153 m/s at the second transitional monsoon respectively. During low spring tidal condition for both transitional monsoons, the current flowed northwestward on west side and northeastward on east side within the bay ranged 0 - 0.137 m/s and 0 - 0.127 m/s respectively. The hydrodynamic conditions of Banten Bay are slightly different between 2 transitional seasons, especially for the current speed and direction. Those conditions induce a different transport mechanism, resulting in unstable accretion and abrasion along Banten Bay coast.
THE ANALYSIS OF TIDAL CURRENT IN SURAMADU BRIDGE PIER FOR MARINE POWER GENERATION TEST SITE R. Bambang Adhitya Nugraha; Erwandi Erwandi; Hendry Syahputra; La Ode Nurman Mbay
Jurnal Segara Vol 14, No 2 (2018): Agustus
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1834.009 KB) | DOI: 10.15578/segara.v14i2.6644

Abstract

Recently, the interest in renewable ocean energy has been
growing rapidly among the ocean researchers in Indonesia. In
this paper, the pattern of tidal current in Madura Strait was analyzed and it is used as First
we present the general information of the structure of
Suramadu Bridge and explain the purpose of installing tidal current turbine between its piers. Second, we develop the numerical model of Madura Strait. The bottom topography of Madura Strait is digitized from bathymetry map produced by Indonesian Navy. A nested hydrodynamic model has been developed to refine the specific area of interest around the piles of the Suramadu Bridge. MIKE-21 program is then employed to simulate the tidal current that passes between the piles of the bridge. Next, we validate the model by conducting the field measurement of the speed of tidal current between pile no. 56 and pile no. 57. We deployed ADCP and measured the current speed for 15 days. The obtained data is then compared with the numerical model. The results show that the simulated currents has similar pattern with the measured data. We also discuss the characteristics of the simulated tidal current comparing with the ADCP results. Finally we estimate the possible produced power produced from the kinetic energy of the predicted tidal current of hydrodynamic.
Characteristics of Marine Litters in the West Coast of Bali Semeidi Husrin; Ulung Jantama Wisha; Rahmadi Prasetyo; Aprizon Putra; Adli Attamimi
Jurnal Segara Vol 13, No 2 (2017): Agustus
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1720.714 KB) | DOI: 10.15578/segara.v13i2.6449

Abstract

Kuta beach in Bali is a world-famous tourist destination has been suffering from marine litters (or debris) disaster almost every year. Mitigation efforts have been carried out by the local government started from educating the people as well as continuing mass cleaning campaigns for the stranded litters in the beach. The research has an objective to understand the physical processes of marine debris characteristics in Kuta such as its propagation and distribution along the coastline and in the water columns during the two different seasons (West Monsoon and Transitional seasons). A hydrodynamic model was developed to investigate the transport of marine litters from their sources by considering the tide-driven surface currents and wind. Field surveys were also conducted to assess marine litter’s characteristics in the surface and in the sea beds for both plastic and wood types of litters. Hydrodynamic simulation shows that the surface current ranging from 0.05 – 1.75 m/s is capable of transporting marine surface debris from Bali Straits and other sources in the South of Bali to Kuta during West Monsoon season. The collected litters during the West Monsoon season were four times larger in quantity. The concentration of litters in the seabed and in the water column is larger near to the coastline than further offshore. In the meantime, during Transitional season, Kuta was completely free from marine litters. Results from surveys also showed that the most effective measures for marine litters in Kuta is self-awareness of the people to keep the environment clean.
Pengaruh Anomali Iklim (Enso Dan Iod) Terhadap Sebaran Ikan Pedang (Xiphias Gladius) Di Samudera Hindia Bagian Timur Bram Setyadji; Khairul Amri
Jurnal Segara Vol 13, No 1 (2017): April
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1497.566 KB) | DOI: 10.15578/segara.v13i1.6422

Abstract

Anomali iklim seperti ENSO dan Dipole Mode mempengaruhi dinamika massa air di bagian timur Samudera Hindia serta berdampak terhadap pola sebaran dan hasil tangkapan ikan. Ikan pedang yang tertangkap di bagian timur Samudera Hindia merupakan hasil tangkap sampingan (by catch) rawai tuna. Meskipun mempunyai nilai ekonomis yang tinggi, penelitian mengenai keterkaitan faktor lingkungan dengan hasil tangkapan dan sebaran ikan pedang, masih belum banyak dilakukan. Tulisan ini membahas pengaruh anomali iklim (ENSO dan Dipole Mode) terhadap sebaran hasil tangkapan dan sebaran spasial-temporal ikan pedang di bagian timur Samudera Hindia. Data paremeter lingkungan yang digunakan berupa sebaran suhu permukaan laut (SPL) atau Sea Surface Temperature(SST) dan klorfil-a permukaan (SSC=Sea Surface Chlorophyll) hasil pengukuran sensor Satelit Aqua MODIS (Moderate Resolution Imaging Spectroradiometer) L-2 dengan format bulanan. Data ikan pedang merupakan data kombinasi hasil pendaratan di Pelabuhan Benoa 2002–2014 dan data pemantauan ilmiah Loka Penelitian Perikanan Tuna  2005–2014. Hasil penelitian menunjukkan bahwa ada anomali iklim yang mempengaruhi hasil tangkapan per upaya (Catch per Unit Effort/CPUE) dan diduga juga mempengaruhi recruitment ikan pedang. Nilai CPUE tahunan tertinggi (0,16 ikan/100 pancing) terjadi pada event El-Nino moderate (2009) dimana terjadi peningkatan produktivitas primer, sebaliknya CPUE tahunan terendah (0,08 ikan/100 pancing) pada event IOD negatif moderate (2005) yang dampaknya sama dengan La-Nina, yakni penurunan produktivitas primer. Indikasi ini diperkuat dengan hasil pengamatan bulanan dimana nilai CPUE tertinggi pada Juni (periode berlangsungnya upwelling di selatan Jawa), sebaliknya pada bulan Desember CPUE rendah (ketika kesuburan perairan menurun). Dominansi hasil tangkapan ikan muda periode 2007-2011, diduga merupakan generasi baru recruitment dari keberhasilan pemijahan sebelumnya, saat terjadi event consecutive IOD positif (tiga tahun berturut-turut: 2006-2007-2008) meningkatkan produktivitas primer secara signifikan akibat intensitas upwelling yang tinggi.
PENGELOLAAN WILAYAH GAMBUT MELALUI PEMBERDAYAAN MASYARAKAT DESA PESISIR DI KAWASAN HIDROLOGIS GAMBUT SUNGAI KATINGAN DAN SUNGAI MENTAYA PROVINSI KALIMANTAN TENGAH Muhammad Ramdhan; Zaenal Arifin Siregar
Jurnal Segara Vol 14, No 3 (2018): Desember
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1026.768 KB) | DOI: 10.15578/segara.v14i3.6416

Abstract

Area gambut yang ada di wilayah pesisir memiliki peran ekologis yang penting sebagai penyimpan karbon, penyimpan air, konservasi biodiversitas dan aktivitas ekonomi masyarakat. Pengelolaan wilayah gambut dilakukan dengan memperhatikan keseimbangan faktor sosial, ekonomi dan juga lingkungan fisik. Makalah ini memaparkan usaha pengelolaan wilayah gambut di kawasan hidrologis gambut Sungai Katingan - Sungai Mentaya seluas 254.522 hektar yang ada di Provinsi Kalimantan Tengah. Metode kuantitatif-kualitatif melalui teknik GIS dan survey lapangan dilakukan untuk mendapat parameter terkait pengelolaan lahan gambut di lokasi studi. Upaya restorasi yang dilakukan oleh pemerintah ada tiga jenis yaitu melakukan rewetting di areal gambut yang berkanal dan pernah terjadi kebakaran, revegetasi bagi wilayah gambut yang tutupan vegetasinya sudah < 25% dan pembentukan desa-desa peduli gambut yang dilakukan melalui suatu pendekatan sosial pada masyarakat sekitar yang beraktivitas sehari-hari di kawasan gambut tersebut.
STUDI AWAL RAJA AMPAT SEBAGAI MARINE ECO ARCHEO PARK: ANALISIS KUALITAS PERAIRAN DI KAWASAN SELAT DAMPIR Agustin Rustam; Ira Dillenia; Rainer A Troa; Dietriech G Bengen
Jurnal Segara Vol 14, No 1 (2018): April
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1308.575 KB) | DOI: 10.15578/segara.v14i1.6786

Abstract

Selat Dampir yang berada di daerah Raja Ampat merupakan salah satu gugusan pulau-pulau kecil yang berada di ujung kepala burung pulau Papua bagian dari kawasan Coral Triangle Initiative (CTI) yang memiliki biodiversitas tinggi. Selain itu di lokasi ini terdapat situs arkeologi maritim, sehingga kawasan ini merupakan kawasan yang cocok sebagai kawasan marine eco archeo park. Perlu dilakukan penelitian awal keberadaan lokasi ini seperti kualitas perairan yang dilakukan pada tanggal 7 – 13  Mei 2014. Pengambilan data kualitas perairan dilakukan secara purposive sampling dengan menggunakan alat multiparameter secara in situ dan analisis sampel air di laboratorium. Parameter yang diukur yaitu salinitas, pH, turbiditas, padatan tersuspensi (TSS), Biological Oxygen Demand (BOD5), nitrat, tembaga dan nikel. Analisis data dilakukan secara deskriptif dan menggunakan analisis PCA (Principal Component Analysis). Hasil yang didapat untuk semua parameter masih sesuai dengan KMNLH no 51 tahun 2004, hanya nilai tembaga pada saat pengukuran tidak sesuai, walaupun secara keseluruhan perairan Selat  Dampir pada saat pengukuran masih dalam kondisi baik sebagai daerah taman nasional dan wisata bahari. Berdasarkan analisis PCA didapatkan parameter yang berperan kuat di lokasi adalah BOD5, pH, TSS dan kecerahan. Diperlukan penelitian lebih lanjut terkait lokasi penelitian sebagi situs maritim dan daerah wisata bahari di daerah konservasi dalam mewujudkan marine eco archeo park berbasis ekosistem lestari.
Kondisi Hidrooseanografi Perairan dan Hubungannya dengan Kelimpahan Fitoplankton di Perairan Sedanau dan Pulau Tiga, Kabupaten Natuna, Kepulauan Riau I Nyoman Radiarta; Erlania -; Joni Haryadi
Jurnal Segara Vol 13, No 3 (2017): Desember
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1577.521 KB) | DOI: 10.15578/segara.v13i3.6544

Abstract

Penelitian ini bertujuan untuk mengkaji kondisi kualitas perairan dan hubungannya dengan kondisi fitoplankton di perairan Pulau Sedanau dan Pulau Tiga Kabupaten Natuna, Kepulauan Riau. Kondisi kualitas perairan dianalisis secara statistik dengan pendekatan klaster analisis dan indek kualitas air/WQI (Water Quality Index), dengan melibatkan  seluruh parameter dan berdasarkan parameter kunci biota perairan.  Hasil analisis klaster membagi kawasan perairan menjadi tiga klaster di masing-masing lokasi penelitian. Klaster ini membagi kawasan perairan berdasarkan kedekatan dengan daratan dan tingkat keterbukaan (keterlindungan) kawasan. Pembagian kawasan ini dapat digunakan sebagai acuan lokasi pengembangan budidaya laut. Analisa indek kualitas air menunjukkan bahwa perairan Pulau Sedanau dan Pulau Tiga masih dalam kategori baik dengan nilai indek berkisar antara 71-90. Terdapat hubungan yang signifikan (90%) antara klaster kawasan dengan kondisi fitoplankton, sedangkan hubungannya dengan WQI umumnya tidak signifikan. Hasil penelitian ini menunjukkan bahwa karaktersitik perairan di Pulau Sedanau dan Pulau Tiga cukup berbeda, namun masih sangat baik untuk mendukung pengembangan budidaya laut.
Progress on Coastal Ecosystems: Corals and Mangroves Recovery 12 Years Later after March 2005 Earthquake in North Nias, North Sumatera. Suyarso .; Bayu Prayuda; Praditya Avianto
Jurnal Segara Vol 13, No 2 (2017): Agustus
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1494.353 KB) | DOI: 10.15578/segara.v13i2.6444

Abstract

Twelve years ago 9.3 Mw earthquake in the Andaman Islands, on December 26, 2004 accompanied by the tsunami in Aceh led to extraordinary losses, unprecedented for human life in coastal areas of Indonesia and neighboring countries. A few months later, on March 28, 2005  an earthquake 8.7 Mw has occured around Nias, hundreds of hectares of coral reef ecosystems lifted into the terrestrial, many corals die of drought and collapse due to earthquake vibration. Similarly, most of the mangrove moved away from the coastline due to land lifting. The purpose of this study is to determine the development of coastal ecosystems, especially coral reefs have been damaged by the earthquake and mangrove due to changes in the environment. The method used in this study is remote sensing technique through the data acquired from landsat imageries, measurements of coastal profile, coral reef health monitoring data collected in each year at six permanent stations. The field research conducted in August 2005, December 2014 and December 2015, the last two activities are under research collaboration between the Marine Agency of North Nias Regency and Research Center for Oceanography LIPI. The results showed in the period 2007-2010 live coral coverage is likely to increase in the range between 2.23% to 48%. Instead since 2014 showed a significant decrease in almost all stations. Twice earthquakes with 33the magnitude 8.2 Mw and  8.6 Mw occurred almost simultaneously on April 11, 2012 at 400 km southwest of Aceh is thought to play a role in tear down the developing corals. Similarly, the existence of mangrove that has moved away from the coastline due to the land lifting in 2005, species of  Rhyzophora desiccated  and died slowly but other species such as Aegiceras, Dolichandrone, Xylocarpus and Cheriops  appear stayed on  the dry land condition and seemed to be growing normally
PENGARUH PENAMBANGAN PASIR LAUT TERHADAP KEKERUHAN PERAIRAN TELUK BANTEN SERANG Zuleha Ernas; M. Hasroel Thayib; Widodo S Pranowo
Jurnal Segara Vol 14, No 1 (2018): April
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (580.381 KB) | DOI: 10.15578/segara.v14i1.7149

Abstract

Pesatnya pertumbuhan ekonomi dan penduduk di daerah pesisir menjadikan kebutuhan akan ruang yang lebih luas sehingga reklamasi kawasan pesisir menjadi pilihan utama yang banyak ditempuh. Pemanfaatan pasir laut yang berlebihan dan tidak terkendali dapat merusak daya dukungnya. Penelitian ini bertujuan untuk mengkaji gangguan pada kekeruhan perairan Teluk Banten Kabupaten Serang yang disebabkan kegiatan penambangan pasir laut pada periode 2004-2015. Penelitian ini menggunakan metode analisis korelasi dan regresi polinomial orde 2. Penambangan pasir laut oleh sebuah perusahan swasta dilakukan di Teluk Banten pada perairan Desa Lontar Kecamatan Tirtayasa Kabupaten Serang dan Desa Pulo Panjang Kecamatan Pulo Ampel Kabupaten Serang. Penambangan dilakukan mulai tahun 2004 hingga 2015, dengan total produksi hingga Januari 2015 adalah 11.513.972 m3.Hasil penelitian menunjukkan hubungan yang kuat (r = 0,9835) antara penambangan pasir laut dengan peningkatan kekeruhan perairan Teluk Banten dengan persamaan regresi, y(x)= 90,8494 + 9,2392.10-3 x - 1,3059.10-7 x2.  Disarankan aktivitas penambangan pasir laut dapat dipertimbangkan untuk dihentikan sementara karena telah meningkatkan TSS perairan Teluk Banten hingga melampaui ambang batas baku mutu lingkungan.

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