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      Zonasi geomorfologi dan koreksi kolom air untuk pemetaan substrat dasar menggunakan citra quickbird

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      Jurnal Teknologi Perikanan dan Kelautan - Dr. Vincent hal. 17-25b.pdf (292.8Kb)
      Date
      2012-05
      Author
      Selamat, Muhammad Banda
      Jaya, Indra
      Siregar, Vincentius Paulus
      Hestirianoto, Totok
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      Abstract
      ABSTRACT Bias mqy oemr on al/enuation (O~[jhieill ralio estimated/rom waler (olumll corredion method. ThiJ biaJ then contribute to themati( aa1iraq ~/bottom JUbJ1rale ima..ges. This Jiudy used geomorpholoc~i( spatial zonation to improve thematic accuracy 0/ bottom Jubstrate maps that producedfrom water (ollimn corredion method. Quickbird pixel values were (onverted to the lap 0/ atmosphere radiance andlal/owed by waler column «Jrredion to make bollom JUbJtrate map with Ihree themes i.e. Jand. set{gmsJ and (oml reef Field data were ,grouped wing Bray CurtiJ metbod and become baJiJ' 0/image redass[ji'YJlion. Geomorpliological profile was e~'dractedlrom green and red composite ima..ges. re/er 10 a bathymetric' survry. This combined metbod was signiji,rmtly rearb the themali" accura,J' up 10 more !bafl 80%. Keywords: Quickbird, bottom subtratc, thematic accuracy ABSTRAK Salah satu kekmahan metodc koreksl kolom air adalah dapat mcmunculkan bias dalam estimasi rasio kocfisicn atenuasi. Bias ini herkontnhusi pada nilai akurasi tcmauk peta substrat dasar. Studi ini menggunakan pcmkkatan zonasi gcomorfologi untuk meningkatkan akurasi temauk peta substrat yang dihasilkan dan metode korcksi kolom air. Nilai piksel citra QUlckbird dikom•ersi kc radiansi dan dilanjlltkan dengan koreksl kolom air untuk mcnghasilkan peta substrat dasar dcngan tiga tema: substrat dominan pasir, lamun dan karang. Data lapangan dikelompokkan menggunakan mctode Bray curtis dan menjadi dasar bagi reklasifikasi, Profil geomorfologi dicitra disadap dan gabungan kanal hijau dan menIh, mengacu pada hasd survci batimetri. "\kurasi tematik metodc kombll1asi ini tlapat mcncapai Icbih dan 800/0. Kata kunci: Quickhird, suhstrat dasar, akurasi ternatik
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      http://repository.ipb.ac.id/handle/123456789/59037
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      • Faculty of Fisheries and Marine Science [336]

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