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Modeling Sea Bottom Hyperspectral Reflectance [PDF]

Applied Sciences (Switzerland), 2018
Over the near-ultraviolet (UV) and visible spectrum the reflectance from mineral compounds and vegetation is predominantly due to absorption and scattering in the bulk material. Except for a factor of scale, the radiative transfer mechanism is similar to
Georges Fournier
exaly   +4 more sources

An Exponential Algorithm for Bottom Reflectance Retrieval in Clear Optically Shallow Waters from Multispectral Imagery without Ground Data

Remote Sensing, 2021
Bottom reflectance is a significant parameter characterizing the bottom types for clear optically shallow waters, typically in oceanic islands and reefs.
Xiaorun Li, Yunhan Ma, Wenting Cao
exaly   +3 more sources

Coastal Ecosystem Investigations with LiDAR (Light Detection and Ranging) and Bottom Reflectance: Lake Superior Reef Threatened by Migrating Tailings

Remote Sensing, 2019
Where light penetration is excellent, the combination of LiDAR (Light Detection And Ranging) and passive bottom reflectance (multispectral, hyperspectral) greatly aids environmental studies.
Sarah A Green, Foad Yousef, W Charles Kerfoot   +2 more
exaly   +3 more sources

Satellite retrieval of bottom reflectance from high-spatial-resolution multispectral imagery in shallow coral reef waters

International Journal of Applied Earth Observation and Geoinformation
Under anthropogenic disturbances and global warming, coral reef ecosystems are degrading, and there is growing concern about the changes in benthic habitats in shallow coral reef waters.
Mingsen Lin, Yanming Yang
exaly   +3 more sources

An Improved Empirical Model for Retrieving Bottom Reflectance in Optically Shallow Water

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2015
Satellite remote sensing has become an essential observing system to obtain comprehensive information on the status of coastal habitats. However, a significant challenge in remote sensing of optically shallow water is to correct the effects of the water ...
Yang Dingtian
exaly   +3 more sources

Global Chlorophyll Concentration Distribution and Effects on Bottom Reflectance of Coral Reefs

Oceans
Despite the limited coverage of coral reefs in the world’s oceans, they play a crucial role in global marine biodiversity and providing essential ecosystem services.
Gregory P Asner, Ana Gabriela Bonelli, Asner Gregory P   +2 more
exaly   +3 more sources

Remote Sensing of the Water Quality Parameters for a Shallow Dam Reservoir

Applied Sciences, 2022
This study examines the chlorophyll a content and turbidity in the shallow dam reservoir of Lake Dobczyce. The analysis of satellite images for thirteen wavelength ranges enabled the selection of wavelengths applicable for a remote determination of ...
Andrzej Bielski, Cezary Toś
doaj   +1 more source

Resonances in Acoustic Bottom Reflection and Their Relation to the Ocean Bottom Properties [PDF]

IEEE Transactions on Geoscience and Remote Sensing, 1980
The acoustic reflection coefficient of the ocean bottom plotted versus frequency or angle often exhibits a complicated structure of peaks and dips. Features as these may be attributed to resonance phenomena, and the resonance structure, i.e., the distribution and the widths of the resonances, is found to contain essentially all relevant information ...
A. Nagl, H. Überall, W. R. Hoover
openaire   +1 more source

Reflectivity of Deep Sedimentary Bottoms [PDF]

The Journal of the Acoustical Society of America, 1964
A model for bottom-reflectivity loss has been developed in connection with bottom-reflection experiments made with explosive sources in the Mediterranean Sea. The bottom is considered as a fluid medium with attenuation losses. This model has been found to be a good approximation of variations of the reflection coefficient versus frequency and angle of ...
Bruno Lallement, Paul Stangerup
openaire   +1 more source

Performance and Applicability of Water Column Correction Models in Optically Complex Coastal Waters

Remote Sensing, 2020
Maps of submerged aquatic vegetation (SAV) are of primary importance for the sustainable management of coastal areas and serve as a basis for fundamental ecological studies.
Ele Vahtmäe, Tiit Kutser, Birgot Paavel
doaj   +1 more source