• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Taylor Francis Open Select >Measurement of water colour using AVIRIS imagery to assess the potential for an operational monitoring capability in the Pamlico Sound Estuary USA
【2h】

Measurement of water colour using AVIRIS imagery to assess the potential for an operational monitoring capability in the Pamlico Sound Estuary USA

机译：使用AVIRIS影像对水彩进行测量以评估在美国帕姆利科桑德河口的运行监控能力的潜力

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The monitoring of water colour parameters can provide an important diagnostic tool for the assessment of aquatic ecosystem condition. Remote sensing has long been used to effectively monitor chlorophyll concentrations in open ocean systems; however, operational monitoring in coastal and estuarine areas has been limited because of the inherent complexities of coastal systems, and the coarse spectral and spatial resolutions of available satellite systems. Data were collected using the National Aeronautics and Space Administration (NASA) Advanced Visible-Infrared Imaging Spectrometer (AVIRIS) flown at an altitude of approximately 20000 m to provide hyperspectral imagery and simulate both MEdium Resolution Imaging Spectrometer (MERIS) and Moderate Resolution Imaging Spectrometer (MODIS) data. AVIRIS data were atmospherically corrected using a radiative transfer modelling approach and analysed using band ratio and linear regression models. Regression analysis was performed with simultaneous field measurements data in the Neuse River Estuary (NRE) and Pamlico Sound on 15 May 2002. Chlorophyll a (Chl a) concentrations were optimally estimated using AVIRIS bands (9.5 nm) centred at 673.6 and 692.7 nm, resulting in a coefficient of determination (R2) of 0.98. Concentrations of Chromophoric Dissolved Organic Matter (CDOM), Total Suspended Solids (TSS) and Fixed Suspended Solids (FSS) were also estimated, resulting in coefficients of determination of R2=0.90, 0.59 and 0.64, respectively. Ratios of AVIRIS bands centred at or near those corresponding to the MERIS and MODIS sensors indicated that relatively good satellite-based estimates could potentially be derived for water colour constituents at a spatial resolution of 300 and 500 m, respectively.
机译：监测水颜色参数可以为评估水生生态系统状况提供重要的诊断工具。长期以来，遥感技术一直被用来有效监测海洋系统中叶绿素的浓度。然而，由于沿海系统的内在复杂性以及现有卫星系统的频谱和空间分辨率较粗糙，沿海和河口地区的业务监测受到限制。使用美国国家航空航天局（NASA）先进的可见红外成像光谱仪（AVIRIS）在大约20000 m的高度上飞行收集数据，以提供高光谱成像并模拟中分辨率成像光谱仪（MERIS）和中分辨率成像光谱仪（ MODIS）数据。 AVIRIS数据使用辐射转移建模方法进行了大气校正，并使用谱带比和线性回归模型进行了分析。于2002年5月15日在Neuse河口（NRE）和Pamlico Sound中进行了同时野外测量数据的回归分析。使用以673.6和692.7 nm为中心的AVIRIS波段（9.5 nm）对叶绿素a（Chl a）浓度进行了最佳估计。确定系数（R 2 ）为0.98。还估算了发色溶解有机物（CDOM），总悬浮固体（TSS）和固定悬浮固体（FSS）的浓度，得出的测定系数分别为R 2 = 0.90、0.59和0.64。 。以AVIRIS波段为中心或接近与MERIS和MODIS传感器相对应的波段的比率表明，可以分别以300和500 m的空间分辨率对水彩成分得出相对较好的基于卫星的估计。

著录项

相似文献

  • 外文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号