Results 81 to 90 of about 32,153 (173)

Advanced Mid-Water Tools for 4D Marine Data Fusion and Visualization [PDF]

open access: yes, 2009
Mapping and charting of the seafloor underwent a revolution approximately 20 years ago with the introduction of multibeam sonars -- sonars that provided complete, high-resolution coverage of the seafloor rather than sparse measurements. The initial focus
Arsenault, Roland J.   +6 more
core   +1 more source

Internal Lee Waves Control Deep Ocean Turbulent Mixing in the Antarctic Circumpolar Current at 50°E

open access: yesGeophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract Full‐depth (Surface‐to‐bottom) turbulent kinetic energy dissipation (TKED) observed with fast‐response thermistors across the Antarctic Circumpolar Current (ACC) at 50° $\mathit{{}^{\circ}}$E is compared with the energy flux of bottom‐generated internal waves estimated with high‐resolution multibeam bathymetry.
Yusuke Sasaki, Ichiro Yasuda
wiley   +1 more source

Interdisciplinary Methodology to Extend Technology Readiness Levels in SONAR Simulation from Laboratory Validation to Hydrography Demonstrator

open access: yesJournal of Marine Science and Engineering, 2019
This paper extends underwater SONAR simulation from laboratory prototype to real-world demonstrator. It presents the interdisciplinary methodology to advance the state of the art from level four to level seven on the technology readiness level (TRL ...
James Riordan   +4 more
doaj   +1 more source

Seafloor mapping in the Arctic: support for a potential U.S. extended continental shelf [PDF]

open access: yes, 2010
For the United States, the greatest opportunity for an extended continental shelf under UNCLOS is in the ice-covered regions of the Arctic north of Alaska.
Armstrong, Andy   +3 more
core   +2 more sources

Environmental DNA Reveals Diverse and Depth‐Stratified Biodiversity in East Indian Ocean Submarine Canyons

open access: yesEnvironmental DNA, Volume 8, Issue 2, March/April 2026.
Environmental DNA metabarcoding reveals diverse animal communities across Cape Range and Cloates submarine canyons off Western Australia. Two assays detected 234 species spanning 125 families across 11 phyla, highlighting canyon‐specific assemblages and demonstrating the value of eDNA for establishing biodiversity baselines in remote and poorly ...
Georgia M. Nester   +7 more
wiley   +1 more source

Multispectral backscatter-based characterization of seafloor sediments using calibrated multibeam and tilted single-beam echosounders

open access: yesFrontiers in Remote Sensing
This study presents a detailed analysis of Angular Response Curves (ARC) extracted from a multi-spectral seabed backscatter dataset utilizing both calibrated single-beam (SBES) and multibeam echosounders (MBES).
Ridha Fezzani   +3 more
doaj   +1 more source

Morphological instability in restored intertidal flats: How anthropogenic structures drive early‐stage evolution

open access: yesEarth Surface Processes and Landforms, Volume 51, Issue 3, March 2026.
The study focusses on the morphological evolution of worldwide restored intertidal flats. These intertidal flats initially experience high sedimentation rates after the opening of the connection with open waters. The anthropogenic structures cause high morphological instability and are eroded, leading to a self‐cannibalisation of the system.
Riccardo Brunetta   +4 more
wiley   +1 more source

Variable Bandwidth Filter for Multibeam Echo-sounding Bottom Detection [PDF]

open access: yes, 2004
The accuracy of a seafloor map derived from multibeam swath bathymetry depends first and foremost on the quality of the bottom detection process that yields estimates of the arrival time and angle of bottom echoes received in each beam. Filtering of each
de Moustier, Christian   +1 more
core   +1 more source

Interaction of internal waves with the seafloor on the Namibian shelf (SE Atlantic Ocean): Implications for seafloor geomorphology

open access: yesEarth Surface Processes and Landforms, Volume 51, Issue 3, March 2026.
Over geological timescales, internal waves play a significant role in shaping the seafloor morphology. They generate nepheloid layers, slope‐parallel channels and escarpments with erosional surfaces. Abstract The long‐term impact of internal waves on sedimentation and seafloor geomorphology remains poorly constrained.
Elda Miramontes   +13 more
wiley   +1 more source

Design of a Ka-band Wideband Multibeam Phased Array

open access: yesGuangtongxin yanjiu
【Objective】The world has entered the era of 5th Generation Mobile Communication Technology (5G) and satellite Internet, and the demand for communication speed and capacity in various fields has surged, while the application of traditional parabolic and ...
GUAN Jin   +4 more
doaj  

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