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首页> 外文会议>Remote sensing and modeling of ecosystems for sustainability VI >Monitoring the Algal Bloom Event in Lake Okeechobee, Florida, under Tropical Cyclone Fay Impacts Using MODIS/Terra images
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Monitoring the Algal Bloom Event in Lake Okeechobee, Florida, under Tropical Cyclone Fay Impacts Using MODIS/Terra images

机译：使用MODIS / Terra影像监测佛罗里达州奥基乔比湖的藻华事件

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Lake Okeechobee, Florida is the largest freshwater lake in the southeastern U.S. It is a key component in the hydrologic system of South Florida providing water supply for agriculture, the environment, and urban areas. Excessive phosphorus loads, from the Okeechobee watershed over the last few decades have led to increased eutrophication of this lake. Much of the excess phosphorus has been sequestered into the sediments. Sediment water interactions, including diffusive fluxes and sediment resuspension are a source of available phosphorus for phytoplankton. As a consequence, nutrient-enriched lake water has led to phytoplankton blooms from time to time. These blooms are often quantified by measurement of chlorophyll-a concentrations. While the in-situ water quality monitoring is time-consuming, sporadic, and costly, multispectral remote sensing sensors onboard satellites can detect chlorophyll-a contained in most phytoplankton efficiently. The objective of this study is to demonstrate the use of MODIS/Terra Surface Reflectance 1-Day images to capture the unique algal bloom event one week after the landfall of the hurricane Fay in mid-Sept. 2008. Use of the genetic programming model permits sound information retrieval for spatial mapping of chlorophyll-a concentrations, which help explain the mechanism as to why the algal bloom event occurred.
机译：佛罗里达州的奥基乔比湖是美国东南部最大的淡水湖。它是南佛罗里达州水文系统的重要组成部分，为农业，环境和城市地区提供水源。在过去的几十年里，奥基乔比（Okeechobee）流域的磷负荷过高，导致该湖富营养化增加。大量的过量磷已被隔离到沉积物中。沉积物与水的相互作用，包括扩散通量和沉积物的再悬浮，是浮游植物可用磷的来源。结果，营养丰富的湖水有时会导致浮游植物的开花。通常通过测量叶绿素-a的浓度来量化这些花。尽管原地水质监测非常耗时，零星且昂贵，但卫星上的多光谱遥感传感器可以有效地检测大多数浮游植物中所含的叶绿素-a。这项研究的目的是演示在9月中旬Fay飓风登陆一周后使用MODIS / Terra表面反射1天图像捕获独特的藻华事件。 2008年。使用基因编程模型可以进行声音信息检索，以绘制叶绿素a浓度的空间图，这有助于解释为何发生藻华事件。

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