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多重衛星影像於漁場形成機制探討及漁海況速預報之應用

  • 日期:95-05-30
  • 年度:2005
  • 領域:漁業領域
  • 主持人:曾振德
  • 研究人員:陳世欽、林俊辰、黃朝盛、黃繼興

本計畫將利用多重衛星影像,推演海面水溫及水色彩色影像及其等值線圖,並發展冷水渦及鋒面(潮境)等重要水文特徵之空間自動偵測及統計分析技術,發佈近即時漁場資訊速報,並配合漁海況資料蒐集,研究烏魚漁場形成機制及魚群迴之游時空動態變化。由於衛星遙測具有廣景覽要及重複觀測等優異特性,配合漁海況資料蒐集,利用地理資訊系統進行時空動態整合分析,藉以剖析漁場形成機制及表層水文動態變化,再以速預報模式提供漁民業者參考利用,藉以提升漁撈作業效率,減少油耗降低作業成本。此外,近年來由於全球溫室效應影響海況因素及烏魚漁汛期初漁期中國大陸漁民即使用中層拖網撈捕烏魚,因而烏魚漁獲量並不穩定,因此本計畫將對於鯔魚每年來游量多寡、分佈與洄游、年齡組成大小、漁海況資料及鯔魚資源結構等進行資料蒐集與分析,俾能掌握鯔魚魚群動態與監測。

研究報告摘要(英)


In this study, the semi-automatic detection and geostatistical technology will bedeveloped to apply for hydrographic features (i.e. cold & warm eddy, fronts) extractionin multi-satellite images, which include the pseudo-color sea surface temperature images,ocean color images and their contour maps. The value-added satellite images nowcastwill be announced to the fisherman to supply more helpful and serviceful fishing groundinformation, especially in the mullet fishery industry.Integrated the multi-satellite images and in-situ hydrographic data by geographicinformation system (GIS) will expect to help decrease the coast of waste oil and promotethe efficiency of fishing operation. In addition, the instable mullet-fishing production hadbeen caused by the global warming and the inappropriate fishing method from theChina's fisherman. This study will analyze the yearly migration and distribution, age andsize structure dynamics and fishery-oceanographic data of the mullet to understand thefish population spatial-temporal distribution and the mechanism of the fishing groundformation.