Results 41 to 50 of about 975,462 (135)

Remote sensing of optically shallow, vertically inhomogeneous waters: A mathematical model [PDF]

open access: yes, 1981
A multiple-layer radiative transfer model of a vertically inhomogeneous, optically shallow water mass is briefly described. This model is directed toward use in remote sensing properties.
Philpot, W. D., Ackleson, S. G.
core  

Ground-Independent UAV Quantitative Mapping and In Situ Experimental Validation for Coral Reef Habitats

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Optically shallow waters, which host ecosystems like coral reefs, are characterized by complex radiative transfer pathways. Surface reflectance derived from remote sensing in optically shallow waters is influenced by water depth, water quality, and ...
Enze Wang   +6 more
doaj   +1 more source

A Spectral Decomposition Algorithm for Estimating Chlorophyll-a Concentrations in Lake Taihu, China

open access: yesRemote Sensing, 2014
The complex interactions among optically active substances in Case II waters make it difficult to associate the variability in spectral radiance (or reflectance) to any single component.
Yuchao Zhang   +4 more
doaj   +1 more source

Estimation of phytoplankton concentration from downwelling irradiance measurements in water [PDF]

open access: yes, 2012
The downwelling irradiance spectrum is so far not used directly for the determination of water constituents, mainly due to the large and unpredictable fluctuations of the underwater light field induced by the water surface.
Gege, Peter
core   +1 more source

Physics-Based Satellite-Derived Bathymetry (SDB) Using Landsat OLI Images

open access: yesRemote Sensing
The estimation of depth in optically shallow waters using satellite imagery can be efficient and cost-effective. Active sensors measure the distance traveled by an emitted laser pulse propagating through the water with high precision and accuracy if the ...
Minsu Kim   +3 more
doaj   +1 more source

Comparative Analysis of SBES Bathymetry and Machine Learning-Based Satellite-Derived Bathymetry from Sentinel-2 in the Coastal Waters of Dubibir, Situbondo

open access: yesJFMR-Journal of Fisheries and Marine Research
Accurate Bathymetryc information in shallow coastal waters is critical for marine navigation, coastal zone management, habitat assessment, and environmental monitoring.
M. Arif Zainul Fuad   +3 more
doaj   +1 more source

The Empirical Models to Correct Water Column Effects for Optically Shallow Water

open access: yes, 2016
Seagrass as one of the blue carbon sinks plays an important role in environment, and it can be tracked remotely in the optically shallow water. Usually the signals of seagrass are weak which can be confused with the water column. The chapter will offer a model to simulate the propagation of light.
openaire   +2 more sources

WASI-AI: Synergistic Integration of AI and Physics for Retrieving Water Quality and Benthic Parameters from Multi- and Hyperspectral Images

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Artificial intelligence (AI) has spurred significant progress in the remote sensing of water constituents through physical models that rely on a predefined database of simulations, e.g., Case-2 Regional/Coast Color processor.
Milad Niroumand-Jadidi, Peter Gege
doaj   +1 more source

Monitoring Water Transparency in Shallow and Eutrophic Lake Waters Based on GOCI Observations

open access: yesRemote Sensing, 2020
Water transparency represented by the Secchi disk depth (Zsd) plays an important role in understanding water ecology environment variations, especially for optically complex and shallow lake waters.
Shuying Bai   +3 more
doaj   +1 more source

Confidence Measure of the Shallow-Water Bathymetry Map Obtained through the Fusion of Lidar and Multiband Image Data

open access: yesJournal of Remote Sensing, 2021
With the advancement of Lidar technology, bottom depth (H) of optically shallow waters (OSW) can be measured accurately with an airborne or space-borne Lidar system (HLidar hereafter), but this data product consists of a line format, rather than the ...
Zhongping Lee   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy