Results 31 to 40 of about 28,768 (293)

Automatic Processing of High-Rate, High-Density Multibeam Echosounder Data [PDF]

open access: yes, 2003
Multibeam echosounders (MBES) are currently the best way to determine the bathymetry of large regions of the seabed with high accuracy. They are becoming the standard instrument for hydrographic surveying and are also used in geological studies, mineral ...
Calder, Brian R., Mayer, Larry A.
core   +2 more sources

Bathymetry Estimation From Single-Frame Images of Nearshore Waves [PDF]

open access: yesIEEE Transactions on Geoscience and Remote Sensing, 2009
Existing methods for determining bathymetry from remotely sensed images of nearshore waves exploit only information on the magnitude of wavenumber (k = 2pi/L), ignoring spatial changes in wave direction thetas that can provide information about bathymetry gradients.
Kristen D. Splinter, Robert A. Holman
openaire   +2 more sources

Magnetic, electrical, and GPR waterborne surveys of moraine deposits beneath a lake: A case history from Turin, Italy [PDF]

open access: yes, 2011
Bathymetry and bottom sediment types of inland water basins provide meaningful information to estimate water reserves and possible connections between surface and groundwater.
Cesare Comina   +6 more
core   +1 more source

UBathy (v2.0): A Software to Obtain the Bathymetry from Video Imagery

open access: yesRemote Sensing, 2022
UBathy is an open source software developed for bathymetry estimation from video images. The proposed scheme is based on extracting the wave modes from videos of the nearshore surface wave propagation.
Gonzalo Simarro, Daniel Calvete
doaj   +1 more source

Satellite Derived Bathymetry Using Machine Learning and Multi-Temporal Satellite Images

open access: yesRemote Sensing, 2019
Shallow water bathymetry is important for nautical navigation to avoid stranding, as well as for the scientific simulation of high tide and high waves in coastal areas.
Tatsuyuki Sagawa   +3 more
doaj   +1 more source

Estimasi Volume Sedimentasi Waduk Sermo Menggunakan Metode RUSLE, Batimetri dan Angkutan Sedimen

open access: yesJournal of Geospatial Information Science and Engineering, 2020
Sermo Reservoir is a reservoir which was built by Indonesian Government and supported by Asian Development Bank in program Integrated Irrigation Sector Project (IISP) in 1996. Sermo Reservoir functions as a flood control, raw water source and irrigation.
Annisa Wulandari, Bambang Kun Cahyono
doaj   +1 more source

Variational assimilation of surface wave data for bathymetry reconstruction. Part I: algorithm and test cases

open access: yesTellus: Series A, Dynamic Meteorology and Oceanography, 2021
Accurate mapping of ocean bathymetry is needed for effective modelling of ocean dynamics, such as tsunami prediction. Available bathymetry data does not always provide the resolution to model such nonlinear waves accurately, and collection of accurate ...
R. A. Khan, N. K.-R. Kevlahan
doaj   +1 more source

Dimension reduction for Gaussian process emulation: an application to the influence of bathymetry on tsunami heights [PDF]

open access: yes, 2016
High accuracy complex computer models, or simulators, require large resources in time and memory to produce realistic results. Statistical emulators are computationally cheap approximations of such simulators.
Guillas, Serge, Liu, Xiaoyu
core   +2 more sources

Bathymetry Estimation from Satellite Altimeter-Derived Gravity Data

open access: yes, 2023
Bathymetry underpins all marine and ocean research. It is common knowledge that there is a global deficit of high-resolution bathymetry based on modern acoustic techniques. Satellite altimetry enabled modeling of the global seafloor topography and revealed new morphological features in the unmapped areas of the oceans and seas.
Vrdoljak, Ljerka, Bašić, Tomislav
openaire   +2 more sources

Differential Phase Estimation with the SeaMARC II Bathymetric Sidescan Sonar System [PDF]

open access: yes, 1992
A maximum-likelihood estimator is used to extract differential phase measurements from noisy seafloor echoes received at pairs of transducers mounted on either side of the SeaMARC II bathymetricsidescan sonar system. Carrier frequencies for each side are
Cervenka, Pierre   +3 more
core   +2 more sources

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