Results 41 to 50 of about 28,768 (293)

River discharge and bathymetry estimation from SWOT altimetry measurements

open access: yesInverse Problems in Science and Engineering, 2020
An inverse method to estimate the discharge of rivers observed by satellite altimetry is developed and assessed.
Larnier, Kévin   +3 more
openaire   +2 more sources

Video Sensing of Nearshore Bathymetry Evolution with Error Estimate

open access: yesJournal of Marine Science and Engineering, 2019
Although coastal morphology results essentially from underwater sediment transports, the evolution of underwater beach profiles along the diverse coastlines of the world is still poorly documented. Bathymetry inversion from shore-based video cameras set forth a more systematic evaluation and is becoming more commonly used.
Duong Hai Thuan   +3 more
openaire   +4 more sources

Dynamical ocean forcing of the Madden-Julian Oscillation at lead times of up to five months [PDF]

open access: yes, 2011
We show that a simple three-dimensional ocean model linearised about a resting basic state can accurately simulate the dynamical ocean response to wind forcing by the Madden-Julian Oscillation (MJO).
Heywood, KJ   +3 more
core   +1 more source

Assessment of different models for bathymetry calculation using SPOT multispectral images in a high-turbidity area: the mouth of the Guadiana Estuary [PDF]

open access: yes, 2013
Periodic calculation of coastal bathymetries can show the evolution of geomorpholo- gical features in active areas such as mesotidal estuary mouths.
Ojeda Zújar, José
core   +1 more source

Data Assimilation for Bathymetry Estimation at a Tidal Inlet

open access: yesJournal of Atmospheric and Oceanic Technology, 2016
AbstractThis study involved developing and testing a data assimilation framework that accommodates different types of geophysical ocean data (i.e., surface velocity and wave information) and provides an estimation of the bathymetry of a mixed-energy tidal inlet.
S. Moghimi   +3 more
openaire   +1 more source

Neural Network Normal Estimation and Bathymetry Reconstruction From Sidescan Sonar

open access: yesIEEE Journal of Oceanic Engineering, 2023
Sidescan sonar intensity encodes information about the changes of surface normal of the seabed. However, other factors such as seabed geometry as well as its material composition also affect the return intensity. One can model these intensity changes in a forward direction from the surface normals from bathymetric map and physical properties to the ...
Yiping Xie, Nils Bore, John Folkesson
openaire   +2 more sources

Maximum A Posteriori Resampling of Noisy, Spatially Correlated Data [PDF]

open access: yes, 2006
In any geologic application, noisy data are sources of consternation for researchers, inhibiting interpretability and marring images with unsightly and unrealistic artifacts. Filtering is the typical solution to dealing with noisy data.
Calder, Brian R.   +2 more
core   +2 more sources

An Improved Physics-Based Dual-Band Model for Satellite-Derived Bathymetry Using SuperDove Imagery

open access: yesRemote Sensing
Shallow water bathymetry is critical for environmental monitoring and maritime security. Current widely used statistical models based on passive optical satellite remote sensing often rely on prior bathymetric data, limiting their application to regions ...
Chunlong He, Qigang Jiang, Peng Wang
doaj   +1 more source

Assessment of Empirical Algorithms for Shallow Water Bathymetry Using Multi-Spectral Imagery of Pearl River Delta Coast, China

open access: yesRemote Sensing, 2021
Pearl River Delta (PRD), as one of the most densely populated regions in the world, is facing both natural changes (e.g., sea level rise) and human-induced changes (e.g., dredging for navigation and land reclamation).
Chunzhu Wei   +3 more
doaj   +1 more source

Hypsometry and Volume of the Arctic Ocean and Its Constituent Seas [PDF]

open access: yes, 2002
This paper presents an analysis of the Arctic Ocean and its constituent seas for seafloor area distribution versus depth and ocean volume. The bathymetry from the International Bathymetric Chart of the Arctic Ocean (IBCAO) is used together with limits ...
Aagard   +22 more
core   +2 more sources

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