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首页> 外文会议>International Workshop on Marine Remote Sensing in Northwest Pacific Region; 20041011-12; Beijing(CN) >Detection of HAB Using Satellite Data and HABAS Program
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Detection of HAB Using Satellite Data and HABAS Program

机译：使用卫星数据和HABAS程序检测HAB

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In the Korean waters, the outbreaks of Harmful Algal Blooms(HABs) were sporadic until 1980s, but became frequent and widespread during the 1990s. They were generally observed from late spring to autumn, with peak in late summer season (from July to September). Since 1995, HABs (the dinoflagellate bloom of Cochlodinium polykrikoides) became more frequent and widespread in whole coastal area of the South sea and East sea, persisted nearly two months. Therefore, an early HAB warning system is very necessary to mitigate the economical loss of aquaculture industries. HAB monitoring wrer carried out by vessel cruising, patrolling coastal waterfront, aircraft observation and remote sensing. We had collected the dispersion area of HAB using vessel cruising and aircraft observation. A biological and chemical parameters of coastal water environment are monitored, including phytoplankton abundance, density, chlorophyll concentration, nutrients and physical parameters such as temperature, salinity, pH, water transparency and tidal currents. Meteorological data such as wind, precipitation, sun light intensity were analyzed for the dispersion of HABs. However, we need to more organized HAB information system for construction of HAB database system and to develop the detection algorithm using satellite data. In this study, I would like to introduce the HABAS(Harmful Algal Blooms Analysis System), which is developed by visual basic and Map object. HABAS program shows the dispersion area, species and density of daily algal bloom from 1995 to 2004 in Korean waters. Satellite data such as Landsat, SPOT, OCM, MODIS were used for detection of HAB and compared with in-situ data collected by vessel cruising. Long filamentary structures of algal blooms are detectable in the Landsat imagery, which means that the filaments are wider than 30 m. These satellite images of HAB were displayed with HABAS program.
机译：在朝鲜水域，有害藻华（HABs）的爆发直到1980年代都是零星的，但在1990年代却变得频繁和广泛。通常在春季末到秋季观察到它们，在夏季末期（从七月到九月）达到峰值。自1995年以来，HAB（Cochlodinium polykrikoides的鞭毛藻）在南海和东海的整个沿海地区变得更加频繁和广泛，持续了近两个月。因此，早期的HAB预警系统对于减轻水产养殖业的经济损失非常必要。民航局的监测工作是通过船只巡游，沿海沿岸巡逻，飞机观察和遥感进行的。我们使用船只巡游和飞机观察收集了HAB的分散区域。监测沿海水环境的生物和化学参数，包括浮游植物的丰度，密度，叶绿素浓度，养分和物理参数，例如温度，盐度，pH，水透明度和潮流。分析了诸如风，降水，太阳光强度等气象数据对HABs的分散性。但是，我们需要更加组织化的HAB信息系统来构建HAB数据库系统，并开发使用卫星数据的检测算法。在这项研究中，我想介绍HABAS（有害藻华分析系统），它是由Visual Basic和Map对象开发的。 HABAS程序显示了1995年至2004年韩国水域中每天藻华的分布面积，种类和密度。卫星数据（例如Landsat，SPOT，OCM，MODIS）用于检测HAB，并与船只巡游收集的现场数据进行比较。在Landsat影像中可以检测到藻华的长丝状结构，这意味着丝状体的宽度大于30 m。这些HAB的卫星图像通过HABAS程序显示。

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