Spectral Reflectance Signatures of Case Ii Waters
نویسندگان
چکیده
Sea-truth water sampling campaigns were carried out in the Johore Strait, Singapore from Dec 1996 to Dec 1998, partially funded by NASDA-ESCAP for utilization of ADEOS OCTS data. Water leaving radiance and reflectance data were collected together with coincidental measurements of water quality parameters, including the total suspended solid (TSS) and the chlorophyl-a (Chl-a) loadings. Results of spectral analysis show that, it is possible to distinguish case II waters of different TSS and Chl-a loadings as well as different phytoplankton bloom types using the reflectance spectra. Implications for remote sensing monitoring of algal blooms and retrieval of water quality parameters are discussed.
منابع مشابه
Bottom Reflectance in Ocean Color Satellite Remote Sensing for Coral Reef Environments
Most ocean color algorithms are designed for optically deep waters, where the seafloor has little or no effect on remote sensing reflectance. This can lead to inaccurate retrievals of inherent optical properties (IOPs) in optically shallow water environments. Here, we investigate in situ hyperspectral bottom reflectance signatures and their separability for coral reef waters, when observed at t...
متن کاملUsing Spectral Descriptive Signatures for Industrial Plume Detection
This paper presents a novel approach for anomaly detection base on computing and utilizing descriptive spectral signatures. The goal of the work is to distinguish between contaminated and normal water areas within a region of investigation. A site-independent approach was developed by considering descriptive spectral signatures characterising normal sweat lake water as reference spectral featur...
متن کاملMapping optical parameters of coastal sea waters using the Hyperion imaging spectrometer
The Hyperion instrument on-board the EO1 satellite is an imaging spectrometer capable of acquiring hyperspectral data with over 200 contiguous spectral bands of about 10 nm bandwidth. The instrument is not designed for ocean observation. Nevertheless, case 2 water near the coastal regions with high sediment loading usually has higher reflectance in the visible wavelength region than the clear c...
متن کاملSuspended Particulate Matter (SPM) mapping from MERIS imagery. Calibration of a regional algorithm for the Belgian coastal waters
A hydro-optical algorithm based on reflectance at 555nm has been used in the past for suspended particulate matter concentrations (SPM) retrieval from SeaWiFS over the Belgian coastal (case II) waters in Southern North Sea. The extra spectral resolution of MERIS offers the possibility of improvements, though necessitates algorithm recalibration. This study presents the calibration of the hydro-...
متن کاملRemote chlorophyll-a retrieval in turbid, productive estuaries: Chesapeake Bay case study
Accurate remote assessment of phytoplankton chlorophyll a (chla) concentration is particularly challenging in turbid, productive waters. Recently a conceptual model containing reflectance in three spectral bands in the red and near infra-red range of the spectrum was suggested for retrieving chla concentrations in turbid productive waters; it was calibrated and validated in lakes and reservoirs...
متن کامل