Results 51 to 60 of about 40,358 (246)

Innovative Suction Anchor System (SAFL) with Extendable Fastening Legs: Design, Prototype Development, and Initial Field Testing in Soft Seabed Environments [PDF]

TransNav
The article introduces the innovative seabed anchor system SAFL (Suction Anchor with extendable Fastening Legs) and presents the results of the research team’s initial tests.
Grzegorz Rutkowski, Olga Jaskulska
doaj   +1 more source

Automatization of multistep sample preparation for microplastics monitoring in aquatic environments

Limnology and Oceanography: Methods, EarlyView.
Abstract Microplastics (MP) have been found in every environmental compartment in urban and remote areas. Although their ubiquity is widely recognized, the lack of harmonized protocols for sampling, sample preparation, and particle identification/quantification hinders comparability among studies.
Markus Sillanpää, Ilse Heiskanen, Outi Setälä, Yoshio Ikezawa   +3 more
wiley   +1 more source

Impact of Fiber Treatments on the Properties and Aging Behavior of a Bio‐Composite Characterized From Nano‐ to Macro‐Scale

Polymer Composites, EarlyView.
From Posidonia oceanica seagrass fibers to sustainable bio‐composites: the role of alkaline treatment in composite performance and durability. ABSTRACT The valorization of the abundant marine residue Posidonia oceanica (PO) fibers, as a filler in a bio‐based epoxy matrix was investigated.
Mahamat Saleh Elhadj Yacoub, Lénaïk Belec, Armand Fahs, Sophie Berlioz, Jean‐François Chailan   +4 more
wiley   +1 more source

Formation Control With Obstacle Avoidance of Underwater Swarms Based on Relative Visual Feedback

Journal of Field Robotics, EarlyView.
ABSTRACT Underwater multi‐robot and swarm systems require advanced methodologies for controlling collective behavior. Conventional single‐robot techniques, such as tethering, sonar imaging, and acoustic localization, are not scalable or effective for swarm applications.
Andrea Infanti, Saverio Iacoponi, Saif Alameri, Mohamed El Hanbaly, Mohammed Tarnini, Cesare Stefanini, Giulia De Masi, Federico Renda   +7 more
wiley   +1 more source

Mechanism of seabed scour and its critical condition estimation by considering seepage forces

Shui kexue jinzhan, 2014
The phenomena in the vicinity of seabed surface such as sediment movement are closely related to the wave-induced seepage in the seabed. In this study,the mechanism of seabed scour is investigated,and the estimation of critical conditions for the ...
WANG Hu, LIU Hongjun, WANG Xiuhai
doaj   +1 more source

The instantaneous seabed liquefaction around offshore pile-type foundation and seabed protection under combined wave and current loading

, 2022
The physical processes involved in the wave–seabed–mono-pile interactions are rather complex, and its upper and lower structures are affected by different loads.
Liang, Z, Jeng, DS
core   +1 more source

Dumpsite Seabed Characterization of the San Pedro Basin, CA, From Autonomous Vehicle Observations

Journal of Field Robotics, EarlyView.
ABSTRACT A wide‐area seabed survey was conducted using autonomous underwater vehicles (AUVs) in a known dumpsite off the coast of Southern California that has been found to have widespread sediment contamination from the chemical dichlorodiphenyltrichloroethane (DDT).
Ryan A. McCarthy, Dylan Kriegman, Sophia T. Merrifield, Heidi Batchelor, Eric J. Terrill   +4 more
wiley   +1 more source

Rhyming in the cold: first evidence of soniferous fishes in the Southern Ocean

Remote Sensing in Ecology and Conservation, EarlyView.
The acoustic ecology of Southern Ocean fishes remains unknown due to a lack of dedicated acoustic research on the fishes of this ocean. Passive acoustic monitoring data were collected at the South African sub‐Antarctic Prince Edward Islands using an underwater acoustic recorder, and towed underwater Ski‐Monkey cameras were deployed to identify fish ...
Fannie W. Shabangu, Grant van der Heever, Charles von der Meden, Hannah Truter, Stephen J. Lamberth, Ofer Gon   +5 more
wiley   +1 more source

Finite Element Analysis for Offshore Pipeline with Reinforced Concrete under Effect by Lateral Traction Considering the Seabed Non-Linear Parameters

نشریه مهندسی دریا, 2017
Stopping the production, heavy loss and environmental hazards are the outcomes of damaging the offshore pipelines. Several cases of damaging because of fishing activities and clash anchors are reported in the Persian Gulf annually.
Madjid Ghodsi Hassanabad, Mohammad mehdi Ziaeifar   +1 more
doaj  

An Anchoring Capacity Study Focused on a Wheel’s Curvature Geometry for an Autonomous Underwater Vehicle with a Traveling Function during Contact with Loose Ground Containing Water

Geotechnics
The current scallop fishery sector allows many scallops to remain in specified fishing zones, and this process leads to heavy losses in the sector. Scallop fishermen aim to harvest the remaining scallops to reduce their losses.
Akira Ofuchi, Daisuke Fujiwara, Kojiro Iizuka   +2 more
doaj   +1 more source