Results 1 to 10 of about 129,723 (113)

4SM: A Novel Self-Calibrated Algebraic Ratio Method for Satellite-Derived Bathymetry and Water Column Correction [PDF]

open access: yesSensors, 2017
All empirical water column correction methods have consistently been reported to require existing depth sounding data for the purpose of calibrating a simple depth retrieval model; they yield poor results over very bright or very dark bottoms.
Yann G. Morel, Fabio Favoretto
doaj   +4 more sources

Water Column Correction for Coral Reef Studies by Remote Sensing [PDF]

open access: yesSensors, 2014
Human activity and natural climate trends constitute a major threat to coral reefs worldwide. Models predict a significant reduction in reef spatial extension together with a decline in biodiversity in the relatively near future.
Maria Laura Zoffoli   +2 more
doaj   +4 more sources

Seagrass mapping using high resolution multispectral satellite imagery: A comparison of water column correction models

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2022
Satellite remote sensing is an efficient and economical technique for studying coastal bottoms in clear and shallow waters. Accordingly, the main objective of this study is the generation of benthic maps using high spatial resolution multispectral images
A. Mederos-Barrera   +3 more
doaj   +3 more sources

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

open access: yesRemote 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   +3 more sources

High-resolution benthic habitat mapping from machine learning on PlanetScope imagery and ICESat-2 data

open access: yesGeocarto International, 2023
This study proposed a comprehensive approach that utilized PlanetScope imagery for classifying tropical-marine benthic habitats after retrieving bathymetry from ICESat-2 data and water-column correction for areas around Lyson Islands, Vietnam.
Nguyen Van An   +3 more
doaj   +1 more source

Sentinel-2 mapping of a turbid intertidal seagrass meadow in Southern Vietnam

open access: yesGeocarto International, 2023
Seagrass ecosystems are crucial to the carbon cycle, biodiversity, fisheries, and erosion prevention. However, there are gaps in mapping seagrass in tropical coastal waters due to turbidity and constantly changing tidal dynamics.
Xuan Truong Trinh   +2 more
doaj   +1 more source

Mapping Substrate Types and Compositions in Shallow Streams

open access: yesRemote Sensing, 2019
Remote sensing of riverbed compositions could enable advances in hydro-morphological and habitat modeling. Substrate mapping in fluvial systems has not received as much attention as in nearshore, optically shallow inland, and coastal waters.
Milad Niroumand-Jadidi   +2 more
doaj   +1 more source

Correction: Century-Long Warming Trends in the Upper Water Column of Lake Tanganyika. [PDF]

open access: yesPLoS ONE, 2015
[This corrects the article DOI: 10.1371/journal.pone.0132490.].
PLOS ONE Staff
doaj   +1 more source

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

open access: yesIEEE 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 ...
Chaoyu Yang, Dingtian Yang
doaj   +1 more source

Change Detection of Benthic Habitat Communities using Landsat Imageries in Wakatobi Islands from 1990 to 2017

open access: yesIndonesian Journal of Geography, 2021
Currently, coral reef and seagrass ecosystems in Wakatobi Islands are categorized as 'poor' because the coverage of the healthy coral is less than 50%.
Muhammad Hafizt   +5 more
doaj   +1 more source

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