Results 21 to 30 of about 40,059 (253)

Bathymetry reconstruction via a time-dependent intrinsic shallow water model [PDF]

open access: yes, 2022
In this thesis, we firstly give a presentation of the state of the art of the bathymetry reconstruction problem. Secondly we introduce, in a geometrical setting, the Shallow water model, known for its many applications (dynamics of the athmosphere ...
Donà, Leonardo
core  

Gravity-derived Antarctic bathymetry using the Tomofast-x open-source code: a case study of Vincennes Bay [PDF]

open access: yesThe Cryosphere
Vincennes Bay is a region of East Antarctica that is vulnerable to sub-ice-shelf basal melting from warm ocean water intrusions. The sub-ice-shelf bathymetry in this region is largely unknown despite its importance for ocean dynamics within ice shelf ...
L. A. Bird   +12 more
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

A VGGNet-Based Method for Refined Bathymetry from Satellite Altimetry to Reduce Errors

open access: yesRemote Sensing, 2022
Only approximately 20% of the global seafloor topography has been finely modeled. The rest either lacks data or its data are not accurate enough to meet practical requirements.
Xiaolun Chen   +7 more
doaj   +1 more source

Multibeam bathymetry raw data (Kongsberg EM 122 entire dataset) of RV SONNE during cruise SO241

open access: yes, 2021
Multibeam bathymetry raw data was recorded in the Pacific during cruise SO241 that took place between 2015-06-23 and 2015-07-24. The data was collected using the ship's own Kongsberg EM 120.
Berndt, Christian, Böttner, Christoph
core   +1 more source

Gravity inversion for sub-ice shelf bathymetry: strengths, limitations, and insights from synthetic modeling [PDF]

open access: yesThe Cryosphere
Sub-ice-shelf bathymetry strongly influences ice shelf stability by guiding melt-inducing water masses and through pinning points that resist the flow of the overriding ice.
M. D. Tankersley   +7 more
doaj   +1 more source

Evaluating ACOMP, FLAASH and QUAC on Worldview-3 for satellite derived bathymetry (SDB) in shallow water

open access: yesGeodesy and Cartography, 2020
Bathymetry map is instrumental for monitoring marine ecosystem and supporting marine transportation. Optical satellite imagery has been widely utilised as an alternative method to derive bathymetry map in shallow water.
Abdul Basith, Ratna Prastyani
doaj   +1 more source

Sidescan Only Neural Bathymetry from Large-Scale Survey

open access: yesSensors, 2022
Sidescan sonar is a small and low-cost sensor that can be mounted on most unmanned underwater vehicles (UUVs) and unmanned surface vehicles (USVs).
Yiping Xie, Nils Bore, John Folkesson
doaj   +1 more source

Research on bathymetry estimation by Worldview-2 based with the semi-analytical model [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
South Sea Islands of China are far away from the mainland, the reefs takes more than 95% of south sea, and most reefs scatter over interested dispute sensitive area.
L. Sheng   +4 more
doaj   +1 more source

Generating synthetic fjord bathymetry for coastal Greenland [PDF]

open access: yesThe Cryosphere, 2017
Bed topography is a critical boundary for the numerical modelling of ice sheets and ice–ocean interactions. A persistent issue with existing topography products for the bed of the Greenland Ice Sheet and surrounding sea floor is the poor ...
C. N. Williams   +9 more
doaj   +1 more source

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