Results 61 to 70 of about 46,415 (246)

Geometric and Radiometric Correction of Multibeam Backscatter Derived from Reson 8101 Systems [PDF]

, 2002
A common by-product of multibeam surveys is a measure of the backscattered acoustic intensity from the seafloor. These data are of immense interest to geologists and geoscientists since maps of the acoustic backscatter strength can be used to infer ...
Beaudoin, Jonathan, Clarke, J.E. Hughes, Gardner, James V., Van den Ameele, Edward J   +3 more
core   +1 more source

Nationwide 8m Hydrologically Conditioned Digital Elevation and Hydraulic Roughness Maps for Aotearoa New Zealand

Geoscience Data Journal, Volume 13, Issue 2, April 2026.
We introduce an 8m Aotearoa New Zealand wide hydrologically conditioned DEMs and roughness generated in April 2025, which is publicly available on ZENODO European Union Open Research Repository (https://zenodo.org/records/16734446) with the DOI 10.5281/zenodo.16734446. This dataset is ideal for flood modelling and other topologically driven analyses in
R. Pearson, A. Harang, C. Bosserelle, S. Dean, C. Cattoën, T. Carey‐Smith, R. Srinivasan, H. Shiona, M. Wilkins, G. Smart, S. Wadhwa, G. Reeves, E. M. Lane   +12 more
wiley   +1 more source

Multibeam 3D Underwater SLAM with Probabilistic Registration

Sensors, 2016
This paper describes a pose-based underwater 3D Simultaneous Localization and Mapping (SLAM) using a multibeam echosounder to produce high consistency underwater maps.
Albert Palomer, Pere Ridao, David Ribas
doaj   +1 more source

Geomorphology and substrate of Galway Bay, Western Ireland

Journal of Maps, 2020
A combination of multibeam bathymetry and backscatter, LiDAR altimetry and bathymetry, satellite images, and hydrodynamic model outputs were used to map the seafloor and coastline of Galway Bay (western Ireland).
Denise McCullagh, Sara Benetti, Ruth Plets, Fabio Sacchetti, Eimear O’Keeffe, Kieran Lyons   +5 more
doaj   +1 more source

Evaluating the Risk of Collision of Seals Swimming Within Metres of Operating Tidal Turbines

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 2, February 2026.
ABSTRACT We used imaging sonar to continuously monitor wildlife at an operational tidal turbine in the Pentland Firth, Scotland, between May 2022 and June 2023. Of 704 detected seal tracks, 347 occurred during turbine operation and 122 of these were detected directly upstream of the rotating blades in the horizontal plane.
Jessica Montabaranom, Douglas Gillespie, Carol Sparling, Emma Longden, Gordon Hastie   +4 more
wiley   +1 more source

Improving the Accuracy of Optical Satellite-Derived Bathymetry Through High Spatial, Spectral, and Temporal Resolutions

Remote Sensing
Accurate nearshore bathymetry is essential for various marine applications, including navigation, resource management, and the protection of coastal ecosystems and the services they provide.
Giovanni Andrea Nocera, Valeria Lo Presti, Attilio Sulli, Antonino Maltese   +3 more
doaj   +1 more source

Quantifying offshore fore-arc deformation and splay-fault slip using drowned Pleistocene shorelines, Arauco Bay, Chile [PDF]

, 2017
Indexación: Web of Science; Scopus.Most of the deformation associated with the seismic cycle in subduction zones occurs offshore and has been therefore difficult to quantify with direct observations at millennial timescales.
Argandoña, B., González, J., Jara-Muñoz, J., Melnick, D., Rietbrock, A., Strecker, M.R., Zambrano, P.   +6 more
core   +1 more source

Multibeam Bathymetry and CTD-Measurements in two fjord systems in Southeast Greenland [PDF]

Earth System Science Data, 2017
Abstract. We present bathymetry and hydrological observations collected in the summer of 2014 from two fjord systems in Southeast Greenland, using SS Activ with a multibeam system temporally installed over the side of the ship. Our results provide a detailed bathymetric map of the fjord complex around Skjoldungen Island and the outer part of ...
K. K. Kjeldsen, K. K. Kjeldsen, K. K. Kjeldsen, R. W. Weinrebe, J. Bendtsen, J. Bendtsen, A. A. Bjørk, A. A. Bjørk, A. A. Bjørk, K. H. Kjær   +9 more
openaire   +8 more sources

Leveraging Commercial High-Resolution Multispectral Satellite and Multibeam Sonar Data to Estimate Bathymetry: The Case Study of the Caribbean Sea

Remote Sensing, 2019
The global coastal seascape offers a multitude of ecosystem functions and services to the natural and human-induced ecosystems. However, the current anthropogenic global warming above pre-industrial levels is inducing the degradation of seascape health ...
Samuel Pike, Dimosthenis Traganos, D. Poursanidis, Jamie Williams, K. Medcalf, P. Reinartz, N. Chrysoulakis   +6 more
semanticscholar   +1 more source

Scour hole behaviour: A field study of the Dutch Rhine Delta

Earth Surface Processes and Landforms, Volume 51, Issue 2, February 2026.
Scour hole behaviour can be divided into dynamic and stable. Dynamic scour holes grow in area, depth and volume during seasonal discharge variations and are typically located in discharge‐dominated river reaches. Stable scour holes are found in tidal rivers with heterogeneous riverbeds and show nearly fixed dimensions.
Marthe Oldenhof, Jord J. Warmink, Koen Blanckaert, Suzanne J. M. H. Hulscher   +3 more
wiley   +1 more source