Results 61 to 70 of about 1,817,988 (202)

Seabed Classification Using Multibeam Echosounder Measurement Data

open access: yes, 2022
Multibeam Echosounder (MBES) utilizes acoustic waves emitted to the seafloor through a transmitter or transducer and records its reflective. The information obtained by MBES are depth data and the scattering value of the acoustic signal reflected by the ...
Cahyono, B.K., Nitriansyah, R.
core   +1 more source

Multi‐Platform Deployments of Low‐Cost Devices for Cetacean Passive Acoustic Monitoring

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Recent advances in affordable, user‐friendly devices offer new opportunities to overcome cost constraints of underwater passive acoustic monitoring (PAM) and expand acoustic data collection. In this study, we deployed low‐cost acoustic recorders and underwater cameras across a range of platforms in the Western Mediterranean, including fishing gear ...
Greta Jankauskaite   +8 more
wiley   +1 more source

An Automatic Target Detection Algorithm for Swath Sonar Backscatter Imagery, Using Image Texture and Independent Component Analysis

open access: yesRemote Sensing, 2016
In the present paper, a methodological scheme, bringing together common Acoustic Seabed Classification (ASC) systems and a powerful data decomposition approach, called Independent Component Analysis (ICA), is demonstrated regarding its suitability for ...
Elias Fakiris   +3 more
doaj   +1 more source

Discovery and Fine‐Scale Mapping of Hadal Xenophyophore Habitat in the Nova Canton Trough, Central Pacific Ocean

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Discovery and fine‐scale mapping of a hadal xenophyophore field: submersible video transects and photogrammetry enable semi‐automated delineation of xenophyophores, revealing their abundance, spatial organisation, structural complexity and contribution to habitat heterogeneity at ~8000 m depth.
Denise J. B. Swanborn   +5 more
wiley   +1 more source

Angular Range Analysis (ARA) and K-Means Clustering of Multibeam Echosounder Data for Determining Sediment Type

open access: yesIlmu Kelautan, 2016
Backscatter value was a key to determine seabed characteristic. Level of intensity or backscatter informed through seabed type. One approach was use to analyze seabed type based on the value of backscatter was Angular Range Analysis (ARA).
Fahrulian Fahrulian   +3 more
doaj   +1 more source

Wave-Induced Seabed Response around a Dumbbell Cofferdam in Non-Homogeneous Anisotropic Seabed

open access: yes, 2019
Cofferdams are frequently used to assist in the construction of offshore structures that are built on a natural non-homogeneous anisotropic seabed. In this study, a three-dimensional (3D) integrated numerical model consisting of a wave submodel and ...
Dong-Sheng Jeng   +7 more
core   +1 more source

Blue Economy Research (2011–2025): A Longitudinal Bibliometric Review and Its Alignment With Global Ocean Governance

open access: yesSustainable Development, EarlyView.
ABSTRACT The Blue Economy has emerged as a key framework for promoting sustainable development in marine and coastal systems. This study provides a longitudinal bibliometric review of peer‐reviewed Blue Economy research published between 2011 and 2025.
Álvaro J. Rojas‐Lamorena   +3 more
wiley   +1 more source

Multifrequency backscatter classification of seabed sediments using MBES: an integrated approach with ground-truth validation

open access: yesFrontiers in Marine Science
Accurate seabed sediment classification is essential for mapping marine geological features, assessing benthic habitat, and planning coastal infrastructure.
Moonsoo Lim   +5 more
doaj   +1 more source

A Novel Visual Classification Method of Seabed Sediments

open access: yes, 2014
This study aims at the autonomous seafloor surveillance by underwater vehicles based on computer vision techniques. A novel scheme of seabed image classification is proposed to identify three types of seabed sediments.
Zhu PQ(祝普强)   +4 more
core  

Toward Enhanced Safety Management in Wave Energy Power Plant Construction Projects: FMEA and HAZOP Combination

open access: yesSafety Science and Technology, EarlyView.
Consolidated FMEA–HAZOP safety management framework for WEC construction projects. ABSTRACT This study presents an advanced safety management framework for “Wave Energy Converter” (WEC) projects, addressing the inherent uncertainty, technological complexity, and environmental exposure of offshore renewable energy systems.
Panagiotis K. Marhavilas   +4 more
wiley   +1 more source

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