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      Analisis daerah penangkapan ikan potensial di perairan selat bangka dan sekitarnya

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      Date
      2004
      Author
      Heriyansyah, Firman Agus
      Siregar, Vincentius P
      Manurung, Djisman
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      Abstract
      Suhu permukaan laut merupakan indikasi umum yang mudah diteliti dengan teknik penginderaan jauh yang dapat digunakan untuk mengetahui pola distribusi SPL secara horizontal, sehingga fenomena front dapat diketahui. Konsentrasi fitoplankton dapat diidentifikasi dari citra Sea WiFS, fitoplankton sangat menentukan besarnya produktivitas primer perairan. Fenomena oseanografi yang dapat diamati melalui teknologi penginderaan jauh antara lain thermal front karena merupakan perangkap bagi zat hara dari kedua massa air yang bertemu sehingga merupakan feeding ground bagi ikan pelagis dan merupakan fishing ground bagi nelayan. Suhu rata-rata bulan April 28,5�C, thermal front berada di sebelah barat bagian atas pulau Bangka dan thermal front juga terdapat di bagian timur pulau Bangka tetapi, suhu thermal front dibagian timur lebih rendah dari sebelah barat. Bulan Juli terdapat sedikit daerah thermal front jika dibandingkan dengan bulan-bulan sebelumnya dengan kisaran suhu 28-29�C yang menyebar secara merata. Bulan Agustus dengan kisaran suhu dominan 2930�C, SPL dibagian timur lebih dominan tinggi dari sebelah timurnya, sedangkan untuk bulan September suhu relatif rendah. Hasil tangkapan ikan menggunakan indikator alat tangkap gillnet.
       
      The objective of this research is to assess the potential fishing ground based on the oceanographic phenomena such as thermal front in Bangka waters and its surroundings by using NOAA/AVHRR data. To analyze the existences of Potential Fishing Ground, therebare five data categories, i.e: NOAA-16/AVHRR, Sea WIFS, Indonesian Current Map, Indonesian Wind Maps, Fishing Catch Data, that take into account. The location of this research, geographycallys, which is lay on 105-107 E and 1°20'-3'7' S. Sea surface temperature (SST) is estimated from NOAA-16/AVHRR data by using Mc.Milin and Crosby's algorithm. Isotherms of SST distribution maps is used to locate the upwelling and the thermal front area and by overlaying with location of fishing grounds and catchs maps the area potential fishing ground is assessed. The result of the research showed that the distribution pattern of sea surface temperature in Bangka waters is around 24°C -28,5°C. Furthermore, according to fishing activity from the fishermen during May and October indicated that the potential fishing ground through this period highly related to the temperature between 24°C-26°C and the current between 1-2 m/s. There is no indicatioan of occuance upwelling in area studied; the fotential fishing grounds are locate in the high leapsaline side of the thermal front; wich are most the cases also the water massurs of low salinity
       
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      http://repository.ipb.ac.id/handle/123456789/120105
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      • MT - Fisheries [3205]

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      Indonesia DSpace Group 
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