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首页> 外文会议>International conference on remote sensing for marine and coastal environments >HYPSOGRAPHIC ANALYSIS OF COASTAL BAY ENVIRONMENTS USING INTEGRATED REMOTE SENSING TECHNIQUES. GREAT MACHIPONGO BAY. VIRGINIA. U.S.A
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HYPSOGRAPHIC ANALYSIS OF COASTAL BAY ENVIRONMENTS USING INTEGRATED REMOTE SENSING TECHNIQUES. GREAT MACHIPONGO BAY. VIRGINIA. U.S.A

机译：集成遥感技术沿海湾环境的次数分析。伟大的Machipongo湾。弗吉尼亚。美国

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Coastal bays provide protected environments for numerous species. The environmental quality of these environments is strongly dependent on the depth and exchange of water over different parts of the basin floor. It is known that the floors of most coastal bays and lagoons do not have uniform depths with smooth surfaces. Variations in depth are linked to the complex hypsographic characteristics of a relict antecedent surface. Some of the most productive benthic environments are shallow tidal and subtidal flats. Accurate surveys of these areas are generally not available for many of these areas since they are inaccessible for most survey boats and most surveys are conducted for providing aids for navigation. In coastal bays, most areas that are too shallow for navigation are described as tidal flats or changeable areas. However, subtle differences in depth often determine the light limitations for primary production. At larger scales, the relationship between water level and the hypsometry of a bay determines rates and patterns of flushing. A need for accurate surveys of shallow bays resulted in the development of a rapid technique that could produce horizontal accuracy of 5-10 meters and vertical accuracy of 0.33 meters. Differential GPS data provided the horizontal data requirements for display on Landsat imagery. Echosounding provided the vertical precision that could be accurately adjusted to a NAD 1927 USGS datum.
机译：沿海海湾为众多物种提供保护的环境。这些环境的环境质量非常依赖于盆地地板上不同部分水的深度和交换。众所周知，大多数沿海海湾和泻湖的地板没有均匀的深度，具有光滑的表面。深度的变化与依赖性前表面的复杂性幼地特性有关。一些最富有成效的底栖环境是浅潮汐和阴性单位。这些区域的准确调查通常不适用于许多这些领域，因为它们对于大多数调查船只无法访问，而且大多数调查是为了提供导航辅助手术。在沿海湾，大多数用于导航的区域都被描述为潮汐公寓或可变地区。然而，深度的微妙差异经常确定初级生产的光限制。在较大的尺度上，水位与海湾的低测定法之间的关系决定了冲洗的速率和模式。需要对浅滩的准确调查导致开发快速技术，可以产生水平精度为5-10米，垂直精度为0.33米。差分GPS数据提供了在Landsat图像上显示的水平数据要求。 echosounding提供了可以准确调整到NAD 1927 USGS数据的垂直精度。

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