Komparasi Finansial Hasil Tangkapan Pertahun di Pantai – Barat Selatan dan Pantai Timur – Utara Provinsi Aceh

This study was aimed to compare the wild capturein the south-west coast with the north-east coast of Aceh. This study was conducted in May 2016 using the data of 2014. The respondents were determined by purpose sampling method to understand the fixed and variable costs, and the wild capture data was analyzed by the comparative financial analysis method. The amount of wild in the South-West coast was 27,905 ton/year while for the North-East coast was 28,015.5 ton/year. The financial comparison showed that the revenue in the South-West coast of Aceh is lower (IDR 623,206,269,840) than the North-East coast of Aceh (IDR 625,678,566,150)

Penentuan Daerah Penangkapan Ikan Tongkol (Euthynnus Affinis) Berdasarkan Sebaran Suhu Permukaan Laut Di Perairan Idi Rayeuk Kabupaten Aceh Timur

This study aimed to determine the potential fishing ground for tuna by remote sensing based on sea surface temperature in the waters of Idi Rayeuk, East Aceh regency. The Collection of field data in such as the number of catches and the coordinates of the fishing conducted from March to April 2016. Sea surface temperature downloadable on the site http://oceancolorgsfc.nasa.gov. Then processed using the device Seadas 7.3. The result showed that the distribution of sea surface temperatures in the waters of Idi Rayeuk from March to April 2016 ranges from 28°C to 30°C with the average of sea surface temperature was 29°C. There were two potential fishing ground identified during the study in East Aceh regency District of Idi Rayeuk, e.i 1) at the coordinates 5°04'88"N-98°23'51"E by the number of catches amounting to 13.293 kg and the sea surface temperature of 29°C 2) potential fishing ground at coordinates 5°29'46"N-98°28'09"E by the number of catches amounting to 13.310 kg with sea surface temperature of 30°C. Penelitian ini bertujuan untuk menentukan daerah penangkapan yang potensial untuk ikan tongkol dengan penginderaan jarak jauh berdasarkan suhu permukaan laut di perairan Idi Rayeuk Kabupaten Aceh Timur. Pengambilan data seperti jumlah hasil tangkapan dan koordinat daerah penangkapan ikan dilaksanakan pada bulan Maret sampai April 2016. Suhu permukaan laut diunduh pada situs http://oceancolorgsfc.nasa.gov. Selanjutnya diolah menggunakan perangkat SeaDas 7.3. Hasil penelitian diperoleh bahwa sebaran suhu permukaan laut di perairan Idi Rayeuk pada bulan Maret sampai April 2016 berkisar antara 28°C sampai 30°C dengan suhu permukaan laut rata-rata adalah 29°C. Dua daerah penangkapan yang potensial diindetifikasi selama penelitian di perairan Kabupaten Aceh Timur Kecamatan Idi Rayeuk, yaitu 1) pada daerah penangkapan dengan koordinat 5°04'88"LU-98°23'51"BT dengan jumlah hasil tangkapan sebesar 13.293 kg serta suhu permukaan laut 29°C dan 2) pada koordinat 5°29'462"LU-98°28'09"BT dengan jumlah hasil tangkapan sebesar 13.310 kg dengan suhu permukaan laut 30°C

Penentuan Daerah Penangkapan Potensial Ikan Tuna Mata Besar Dengan Menggunakan Citra Satelit Di Perairan Lhokseumawe

The study to determine a potential fishing ground of big-eye tuna using satellite images in the Lhokseumawe's waters was conducted in February until April 2016 at Fish Landing Areas (TPI) located in the Pusong Village, Lhokseumawe City. Methods of data collection used in this study were obtained through the primary and secondary data. Determining the location of the catching by seeing the spread of chlorophyll-a in a processing map of satellite image and conducted the data collection of the catch in the field. Data were analyzed by analysis of chlorophyll-a and temperature, analysis of the relationship between chlorophyll-a, temperature, and the catching crop, the determination of potential areas of big-eye tuna, and mapping by using Arc Map and Seadas applications.The spread of chlorophyll-a in the waters of Lhokseumawe in February until April ranged between 0.012 mg m-3 to 0.566 mg m-3.The highest temperature in the waters of Lhokseumawe in February by an average was 29°C and the lowest temperature in March with an average temperature was 28°C. The lowest catching of big-eye tuna in February was an amount of 223.4 tons, the highest catching in March was an amount of 513.8 tons, and the catching in April was an amount of 317.5 tons. The potential fishing ground in February was located at coordinates 96°17'30''E–5°14'30''N and the potentialfishing ground was located at coordinates 96°42'30''E–6°24'30''N. In March, the potentialfishing ground was located at coordinates 96°21'30''E–5°43'30''N and the potentialfishing ground was located at coordinates 95°23'30''E–6°33'30''N. The position of potentialfishing groundin April was located at coordinates 96°31'30'' E– 5°43'30'' N. Penelitian penentuan daerah penangkapan potensial ikan tuna mata besar dengan menggunakan citra satelit di perairan Lhokseumawe telah dilakukan pada bulan Februari sampai April 2016 di Tempat Pendaratan Ikan (TPI) yang berada di Desa Pusong Kota Lhokseumawe. Metode pengumpulan data yang digunakan dengan memperoleh data primer (mengikuti langsung operasi penangkapan) dan data sekunder (data dari dinas terkait). Metode analisis data menggunakan analisis klorofil-a dan suhu, hubungan antara klorofil-a, suhu, dan hasil tangkapan, penentuan daerah potensial ikan tuna mata besar, dan pemetaan menggunakan aplikasi Arc map dan Seadas.Penyebaran kandungan klorofil-a di Perairan Lhokseumawe pada bulan Februari sampai April berkisar antara 0,012 mg m-3 sampai 0,566 mg m-3. Suhu di Perairan Lhokseumawe tertinggi pada bulan Februari dengan rata-rata 29°C dan suhu terendah pada bulan Maret dengan suhu rata-rata 28°C. Hasil tangkapan ikan tuna mata besar terendah pada bulan Februari sebesar 223,4 ton, hasil tangkapan tertinggi pada bulan Maret sebesar 513,8 ton, dan hasil tangkapan pada bulan April sebesar 317,5 ton. DPI potensial pada bulan Februari terletak di koordinat 96°17' BT dan 5°14' LU dan DPI kurang potensial terletak di koordinat 96°42' BT dan 6,01°24' LU. Pada bulan Maret DPI potensial terletak di koordinat96°21' BT dan 5°43' LU dan DPI kurang potensial terletak di koordinat 95°23' BT dan 6°33' LU. Posisi DPI potensial pada bulan April terletak dikoordinat96°31' BT dan 5°43' LU

Penentuan Daerah Potensial Penangkapan Ikan Cakalang (Katsuwonus Pelamis) Menggunakan Citra Satelit di Perairan Jayapura Selatan Kota Jayapura

Tujuan dari penelitian ini adalah untuk menentukan daerah penangkapan ikan cakalang yang potensial dengan menggunakan citra satelit di perairan Jayapura Selatan Kota Jayapura. Pengambilan data jumlah hasil tangkapan dan koordinat daerah penangkapan ikan dilaksanakan pada bulan Maret sampai April 2016. Data suhu permukaan laut dan klorofil-a diunduh pada situs http://oceancolorgsfc.nasa.gov.. Hasil penelitian diperoleh bahwa sebaran klorofil-a di perairan Jayapura Selatan pada bulan Maret sampai April 2016 berkisar antara 0,24 mg/m³ sampai 0,31 mg/m³ dengan sebaran klorofil-a rata-rata adalah 0,29 mg/m³. Daerah penangkapan yang potensial diidentifikasi selama penelitian diperairan Jayapura Selatan ada dua, yaitu 1) pada daerah penangkapan dengan koordinat 01⁰09\u27511"LU-140⁰07\u27107"BT dengan jumlah hasil tangkapan sebesar 6.325 kg serta klorofil-a 0,29 mg/m³ dan 2) pada koordinat 01⁰09\u27511"LU-140⁰07\u27107"BT dengan jumlah hasil tangkapan 15.250 kg dengan sebaran klorofil-a 0,31 mg/m³. The aim of this study was to determine the potential fishing area of skipjack tuna using satellite imagery in the waters of South Jayapura, Jayapura City. The collection of data such as the number of catches and the coordinates of the fishing ground was held from March to April 2016. The sea surface temperature and chlorophyll-a were obtained from http://oceancolorgsfc. nasa.gov. The results showed that the distribution of temperature range between 28.67°C-31°C and distribution of chlorophyll-a range between 0.24 mg/m³-0.31 mg/m³ in the waters of South Jayapura from March to April 2016 with the average distribution of sea surface temperature were 29⁰C and the average distribution of chlorophyll-a was 0.29 mg/m³. There are two potential fishing areas identified during the study in the waters of South Jayapura, i.e. 1) in the fishing area with coordinate 01⁰09\u27511"N-140⁰07\u27107"E with catches of 6,325 kg and chlorophyll-a 0.29 mg/m³ and 2) at the coordinates 01⁰09\u27511" N-140⁰07\u27107"E with catches of 15,250 kg and distribution of chlorophyll-a 0.31 mg/m³

Validasi Daerah Potensial Penangkapan Ikan Pelagis Kecil Menggunakan Purse Seinedengancitra Satelitdi Perairan Pidie Jaya

Determination of small pelagic fishing ground could be done by estimate the water condition where the fish habitat life occurred. The indicator that used to estimate the presence of the fish was to lookedat the sea surface temperature (SST) and chlorophyll-a. The aim of this study were to see the relation between chlorophyll-a and the catch of small pelagic fishes,and to determine the potential fishing ground of small pelagic fish in Pidie Jaya waters. The concentration of chlorophyll-aobtained from MODIS satellite by using SeaDas processing software. The data result of small pelagic fishes catches was obtained by observed the landed fish in PPI Meureudu, Pidie Jaya district. The total small pelagic fish catches on February and March 2016 reached 35.258 kg. Relation between the catches and chlorophyll-a showed the higher concentration of chlorophyll-a tends to increased the catch of small pelagic fish as it proved the phytoplankton play the important role as the main producer in ocean food chain. The potential fishing ground during February and March 2016 showed at point A, B and E, while potential fishing ground on February and March 2016 occured on point C and D, and less potential on point F. Penentuan daerah penangkapan ikan pelagis kecil dapat dilakukan dengan cara pendugaan kondisi perairan, yang menjadi habitat ikan tersebut. Salah satu indikator yang dapat digunakan untuk pendugaan keberadaan ikan tersebut di perairan adalah suhu permukaan laut (SPL) dan klorofill-a. Tujuan penelitian ini adalah untuk melihat hubungan klorofil-a dengan hasil tangkapan ikan,dan menentukan daerah potensial penangkapan ikan pelagis kecil di perairan Pidie Jaya. Konsentrasi klorofil-adiperoleh dari satelit MODIS dandiprosesdengansofware SeaDas. Hasil tangkapan ikan pelagis kecil diperoleh dari pendaratan ikan di PPI Meureudu kabupaten Pidie Jaya.Hubungan hasil tangkapan dengan klorofil-a menunjukkankecenderungan konsentrasi klorofil-a yang tinggiakanmeningkatkan hasil tangkapan ikan pelagis kecil.Daerah potensial untuk penangkapan ikan pelagis kecil selama periode bulan Februari dan Maret 2016 terdapat di wilayah penangkapan pada titik A, B, dan E, DPI yang sedang potensial pada bulan Februari dan Maret 2016 terjadi pada titik C dan D, dan yang kurang potensial terdapat pada titik F

3D photospheric velocity field of a Supergranular cell

We investigate the plasma flow properties inside a Supergranular (SG) cell, in particular its interaction with small scale magnetic field structures. The SG cell has been identified using the magnetic network (CaII wing brightness) as proxy, applying the Two-Level Structure Tracking (TST) to high spatial, spectral and temporal resolution observations obtained by IBIS. The full 3D velocity vector field for the SG has been reconstructed at two different photospheric heights. In order to strengthen our findings, we also computed the mean radial flow of the SG by means of cork tracing. We also studied the behaviour of the horizontal and Line of Sight plasma flow cospatial with cluster of bright CaII structures of magnetic origin to better understand the interaction between photospheric convection and small scale magnetic features. The SG cell we investigated seems to be organized with an almost radial flow from its centre to the border. The large scale divergence structure is probably created by a compact region of constant up-flow close to the cell centre. On the edge of the SG, isolated regions of strong convergent flow are nearby or cospatial with extended clusters of bright CaII wing features forming the knots of the magnetic network.Comment: 7 pages, submitted to A&A, referee's comments include