Identifikasi lokasi untuk pengembangan budidaya keramba jaring apung (KJA) berdasarkan faktor lingkungan dan kualitas air di perairan pantai timur Bangka Tengah

Abstract. Waters of the east coast of Bangka Regency has higher potency for development of mariculture livelihood. The Geographic Information Systems (GIS) can be used to determine the suitable location for these activities. Spatial analysis on every measured parameters were conducted and then its overlay to determine the feasibility of locations. The suitability location was categorized into four levels i.e very suitable, moderately suitable, suitable with conditions, and not suitable. The results showed that there are at least 127,746 ha of areas have potency for mariculture location, of these 122,950 ha (96.25%) are very suitable and suitable, while 4796 ha (3.75%) are moderately suitable for fish farming. However, based on field verification, about 8.627 ha of areas are recommended for fish mariculture developement, this is situated at Pulau Ketawai Island, Pulau Panjang dan Pulau Bujur.Key Words : Geographic Information Systems, overlay, fish, mariculture, and cag

Ocean-atmosphere analysis of Super Typhoon Songda 2011 over Western North Pacific Ocean

The purpose of the research is to understand the influences of ocean and atmosphere to the formation of Super Typhoon Songda 2011. Daily SST from NOAA AVHRR with spatial resolution of 0.5° in latitude and longitude was used to study upper oceanic response to the formation of Typhoon Songda. Meanwhile, 3-hourly meteorological data from ARP model with spatial coverage of 0.5° Latitude x 0.5° Longitude cover 201 x 101 points from 25° N - 20° S and 70.0° E – 170.0° E as well as 13 levels of atmospheric columns was also used in the study. The study was also supported by  MT-SAT satellite images. The result showed that from early disturbances until reaching mature stage of Typhoon Songda, SST over WNP reached averages temperature of 30˚C. Warm ocean waters continuously produce heat and moisture to the air that are necessary to fuel the genesis, development, formation and intensification of Typhoon Songda. The study also proved that light vertical wind shear (850 – 200 hPa) at about 0 – 5 knot was observed in the early development of Songda at 1800 UTC on May 19th. For the time being, weak vertical wind shear extended to the northwestern of Pacific Ocean. Thus, it made the system to moved toward northwest and reached category Super Typhoon few days later on May 26th. The study also showed the present of Monsoon trough. Monsoon trough occurred where easterly wind met the reversal southerly wind. The region was stretched from southeast to northwest part of WNP Ocean and designated by an extended low pressure area at the surface as well as extended bands of thunderstorms as observed by satellite imagery. On the other hand, potential vorticity shown in the present paper is useful to obtain an understanding of atmospheric motions and development of the upper-level disturbance. Potential vorticity maximum characterize strong vorticity and upward motion. Conversely, weak vorticity with downward motion is demonstrated by mininum potential vorticity

Contribution of Heat Fluxes on Cyclone Narelle as Simulated by a Mesoscale Model

Abstract - Heat fluxes from oceanic evaporation particularly latent heat is important to drive the formation and intensification of Cyclone Narelle. The research was carried out by introducing a mesoscale model, namely Weather and Research Forecasting (WRF). One domain with spatial resolution at 10 km was utilized in the model. The model involved significant physical parameters, e.g., Kain-Fritsch in the cumulus scheme, Yonsei University in the Planetary Boundary Layer scheme, and WRF Single-Moment 3-class in the microphysics scheme. The analysis focused on January 8th to 14th upon all stages of Narelle. The result showed that Sea Surface Temperatures (SST) higher than 26°C was a favorable environment for Cylone Narelle to form. Surface sensible and latent heat fluxes have strong positive correlation with wind speed and SST. It can be concluded that these variables were highly correlated with surface heat flux that further lead to the formation and intensification of Cyclone Narelle in early January 2013 over South Indian Ocean. The tracks and stages of the model are nearly similar to the observations, the differences are found in late phases of Narelle.  Keywords: Latent heat; WRF; SST; Sensible heat; Wind spee

Studi klasterisasi industri galangan kapal kayu berdasarkan ukuran kapal perikanan di Banda Aceh dan Aceh Besar dengan menggunakan metode Analytical Hierarchy Process (AHP)

The abundant potential of fishery products in Aceh has encouraged ship growth to increase. Ship growth continued to increase by 8% over the past 5 years. So as to support the availability of a seaworthy and reliable fishing fleet, the availability and suitability of shipyards are needed at strategic locations. This study aims to determine the strategic location of shipyards for vessels size ≤ 10 GT, ≥ 10-20 GT, ≥ 30 GT in Banda Aceh and Aceh Besar. Data were collected by interview method and using a questionnaire. The data were accumulated, weighted, and analyzed by Analytical Hierarchy Process (AHP) method using Expert Choice 11. The results showed that the comparison between Peukan Bada Shipyard and Lampulo Shipyard obtained: Peukan Bada Shipyard is suitable for vessels size ≤ 10 GT, ≥ 10-20 GT, ≥ 30 GT, compared to Lampulo Shipyard which is not suitable to be used as a shipyard. The comparison of Peukan Bada Shipyard with Krueng Raya Shipyard obtained the following results: The Peukan Bada Shipyard is suitable for vessels size ≤ 10 GT and ≥ 30 GT, and the Krueng Raya Shipyard is suitable for vessels size ≥ 10–20 GT. Determination of shipyards suitable for the vessels size ≤ 10 GT, ≥ 10-20 GT, ≥ 30 GT through the consideration of several criteria including land area, human resources, sources of raw materials, and facilities owned by each shipyard.Keywords: Wooden shipyard, Analytical Hierarchy Prosess (AHP), Vessel sizeABSTRAKPotensi hasil perikanan yang melimpah di Aceh telah mendorong pertumbuhan kapal semakin meningkat. Pertumbuhan kapal terus mengalami kenaikan sebesar 8% selama 5 tahun terakhir. Sehingga untuk menunjang ketersediaan armada penangkapan yang laik laut dan handal, maka diperlukan ketersediaan dan kesesuaian galangan kapal pada lokasi yang strategis. Penelitian ini bertujuan untuk mengetahui letak lokasi galangan kapal yang strategis untuk kapal yang berukuran ≤ 10 GT, ≥ 10 – 20 GT, ≥ 30 GT di Banda Aceh dan Aceh Besar. Pengambilan data dilakukan dengan metode wawancara dan menggunakan kuesioner. Data diakumulasikan, diberikan bobot, dan dianalisis dengan metode Analytical Hierarchy Prosess (AHP) menggunakan Software Expert Choice 11.  Hasil penelitian menunjukkan bahwa dari perbandingan antara Galangan Peukan Bada dengan Galangan Lampulo diperoleh hasil,  Galangan Peukan Bada sesuai untuk kapal yang berukuran ≤ 10 GT, ≥ 10–20 GT, ≥ 30 GT dibandingkan dengan Galangan Lampulo yang tidak sesuai untuk dijadikan sebagai galangan kapal. Perbandingan Galangan Peukan Bada dengan Galangan Krueng Raya diperoleh hasil sebagai berikut. Galangan Peukan Bada sesuai untuk kapal ≤ 10 GT dan ≥ 30 GT, dan Galangan Krueng Raya sesuai untuk kapal ≥ 10–20 GT. Penentuan galangan kapal yang sesuai untuk ukuran kapal ≤ 10 GT, ≥ 10-20 GT, ≥ 30 GT melalui pertimbangan beberapa kriteria yang meliputi luas lahan, sumber daya manusia, sumber bahan baku, serta fasilitas yang dimiliki oleh masing-masing galangan.Kata kunci: Galangan kapal kayu, Analytical Hierarchy Prosess (AHP), Ukuran kapa

Contribution of Heat Fluxes on Cyclone Narelle as Simulated by a Mesoscale Model

- Heat fluxes from oceanic evaporation particularly latent heat is important to drive the formation and intensification of Cyclone Narelle. The research was carried out by introducing a mesoscale model, namely Weather and Research Forecasting (WRF). One domain with spatial resolution at 10 km was utilized in the model. The model involved significant physical parameters, e.g., Kain-Fritsch in the cumulus scheme, Yonsei University in the Planetary Boundary Layer scheme, and WRF Single-Moment 3-class in the microphysics scheme. The analysis focused on January 8th to 14th upon all stages of Narelle. The result showed that Sea Surface Temperatures (SST) higher than 26°C was a favorable environment for Cylone Narelle to form. Surface sensible and latent heat fluxes have strong positive correlation with wind speed and SST. It can be concluded that these variables were highly correlated with surface heat flux that further lead to the formation and intensification of Cyclone Narelle in early January 2013 over South Indian Ocean. The tracks and stages of the model are nearly similar to the observations, the differences are found in late phases of Narelle

Literature review on shipyard productivity in Indonesia

The shipyard industry plays an important role in supporting fishing activities and efforts to fulfill animal protein for humans. It is an industry that has an orientation to produce a product in the form of a ship. There are two types of shipyards, which are offshore buildings and floating buildings - both are used to build new ships and repair old ships. Based on the level of technology used by the shipyard industry, it is divided into modern, traditional, and semi-modern shipyards. Its productivity can see the advantages and disadvantages of a shipyard to ensure this industry remains to exist. Several factors need to be taken into account to increase the shipyard productivity, including land or location, human resources, technology, and materials.Keywords:ProductivityShipyardTechnolog

Efektivitas penggunaan rumpon sebagai daerah penangkapan ikan di Perairan Pusong Kota Lhokseumawe

The existence of fish aggregating devices (FADs) in a waters is able to establish a new fishing ground that potential waters. FADs are able to attract the attention of the gathering of fishes and other aquayic organisms around it, increasing the density of fish around FADs can increase the chances of successful catching operation, and therefore the FADs has benefited significantly to increase the capture fishery production significantly. The purposes of the research were to evaluate the catching composition of purse seine production  using FADs and non FADs, and to examine the fectiveness of FADs. This research was conducted on February 1 - 28, 2018 located at Pusong Waters, Lhokseumawe City. The survey  method was used in this study. The direct sampling by following the fisherman in fishing activities was performed both the purse seine with FADs and no FADs. Total purse seine catches during the research were 4,320 kg consisting of Long Jawed Mackerel (Rastrelliger sp.) 1,280 kg (29.63%), Decapterus Fish ( Decapterus sp.) 350 kg (8,107%), skipjack tuna (Katsuwonus pelamis) 845 kg (19.56 %), tuna fish (Euthynnus affinis) 720 kg (16.67%), Torpedo scad (Megalaspis cordyla) 300 kg (6.94%), Queenfish 140 kg (3.24%), and starry triggerfish (Abalistes stellaris) 685 kg (15.86%). It was concluded that the purse seine used FADs is more effective  compared to the a purse seine that does not use FADs. Keberadaan rumpon di suatu perairan mampu menarik perhatian berkumpulnya ikan dan organisme lain disekitarnya, sehingga dapat meningkatkan hasil tangkapan ikan. Penelitian ini bertujuan untuk menganalisis komposisi hasil tangkapan purse seine yang menggunakan rumpon dan purse seine yang tidak menggunakan rumpon, dan menilai efektivitas rumpon dalam mengumpulkan ikan. Penelitian ini dilaksanakan pada 01 - 28 Februari 2018 bertempat di Perairan Pusong, Kota Lhokseumawe. Metode penelitian yang digunakan adalah metode survei, yaitu dengan mengikuti nelayan dalam kegiatan penangkapan ikan, baik nelayan purse seine yang menggunakan rumpon dan nelayan purse seine yang tidak menggunakan rumpon. Data ikan hasil tangkapan yang diperoleh dihitung jumlah ikan hasil tangkapan dan diidentifikasi spesies ikan dan selanjutnya dibandingkan dengan hasil tangkapan nelayan yang menggunakan rumpon dan ikan hasil tangkapan nelayan yang tidak menggunakan rumpon. Total hasil tangkapan purse seine selama penelitian sebanyak 4.320 kg terdiri dari kembung (Rastrelliger sp.) 1.280 kg (29,63%), layang (Decapterus sp.) 350 kg (8,107%), cakalang (Katsuwonus pelamis) 845 kg (19,56%), tongkol (Euthynnus affinis) 720 kg (16,67 %), tegang ekor/tetengkek (Megalaspis cordyla) 300 kg (6,94 %), talang/daun bamboo (Scomberoides lysan) 140 kg (3,24%), dan ayam-ayam (Abalistes stellaris) 685 kg (15,86 %).  Dari kedua jenis kegiatan penangkapan ikan tersebut, maka purse seine menggunakan rumpon lebih efektif dibandingkan purse seine yang tidak menggunakan rumpon sebagai daerah penangkapan ikan

Hubungan ukuran kapal, panjang jaring, tenaga mesin, dan material rumpon terhadap hasil tangkapan purse seine: Studi kasus di Pelabuhan Perikanan Nusantara (PPN) Idi Rayeuk, Kabupaten Aceh Timur

Abstract. Each region has different boat sizes, fishing gear sizes, engine power, and fish agregating device (FAD)material, allegedly having different catches. The relationship between the length of the net, engine power, fishing vessel size, usually influences the catch of the fish. This study aims to determine the effect of fishing vessel size, engine power, net length and FAD material on catches volume. The study was conducted using descriptive methods conducted on 14 February-14 March 2019 in Idie Rayeak, Aceh Timur, Aceh Province. Data were analyzed  by multiple linear regression analysis. The results showed that engine power, net length and FAD material had a significant effect on the catch volume, while the fishing vessel size had no significant effect on the catch volume.Keywords: fishing vessel size, length of net, engine power, FAD material Abstrak. Setiap daerah memiliki ukuran kapal, ukuran alat tangkap, tenaga mesin, serta material rumpon yang berbeda-beda, diduga memiliki hasil tangkapan yang berbeda pula. Hubungan antara panjang jaring, tenaga mesin, ukuran kapal, biasanya berpengaruh terhadap hasil tangkapan ikan. Penelitian ini bertujuan untuk mengetahui pengaruh ukuran kapal, tenaga mesin, panjang jaring dan material rumpon terhadap hasil tangkapan. Penelitian dilakukan dengan menggunakan metode deskriptif yang dilakukan pada bulan 14 Februari - 14 Maret 2019 di perairan Idi Rayeak Aceh Timur, Provinsi Aceh.  Data dianalisis  dengan analisis regresi linier berganda. Hasil penelitian menunjukkan bahwa tenaga mesin, panjang jaring dan material rumpon mempunyai pengaruh yang signifikan terhadap hasil tangkapan, sedangkan ukuran kapal tidak mempunyai pengaruh yang signifikan terhadap hasil tangkapan.Kata kunci: Ukuran kapal, panjang jaring, tenaga mesin, material rumpo

Perbedaan Hasil Tangkapan Pukat Pantai Dan Suhu Permukaan Laut Di Gampong Jawa Dan Alue Naga, Banda Aceh

Pada bulan Desember 2021, telah dilakukan penelitian selama 30 hari tentang perbedaan tangkapan pukat dan suhu permukaan laut antara pantai Gampong Jawa dan pantai Alue Naga di Banda Aceh. Tujuan dari penelitian ini adalah menganalisis komposisi hasil tangkapan pukat pantai dan merepresentasikan suhu permukaan laut di perairan Gampong Jawa dan Alue Naga. Penelitian ini menggunakan metode survei berupa pengamatan langsung dan pengumpulan data di lokasi penelitian, analisis data secara deskriptif dan penyajian dalam bentuk tabel atau grafik. Hasil penelitian menunjukkan bahwa hasil tangkapan primer sebesar 23,4 % ikan petek (Leiognathus equulus) pada pukat pantai di perairan Gampong Jawa serta 71,4 % ikan Layur (Trichiurus sp. A) pada pukat pantai di perairan Alue Naga. Pengukuran suhu rata-rata selama penelitian di Gampong Jawa 27°C dan di Alue Naga 28°C

Identifikasi Alat Bantu Penangkapan Ikan pada Bagan Apung di Perairan Krueng Raya

Lift-nets is one of the important fisheries sectors that become the source of coastal comunity livelihood in Krueng Raya, Aceh Besar. The operation of the fishing gear is always supported by the fishing tools that can assist the operation process, as well as the lift-nets that exist in the Krueng Raya area. The main fishing tools on the lift-nets in Krueng Raya are lights, generator and roller. The lack of data and information on the characteristics of fishing equipment becomes an obstacle to improve the development of lift-nets. This study aims to identify fishing equipment used in lift-nets at Krueng Raya. The data were collected by interviewed and directed field observation. Descriptive analysis showed the fishing equipment used in lift-nets in Krueng Raya used neon and mercury lamps, the generator capacity is 15000 watts and roller made of bayur wood (Pterospermum javanicum). The updates of the fishing equipment used in lift-nets at Krueng Rayacan still be made. Kata kunci: Krueng Raya, Lift Ne