Results 61 to 70 of about 26,999 (267)

The impact of deep-sea fisheries and implementation of the UNGA Resolutions 61/105 and 64/72. Report of an international scientific workshop [PDF]

, 2011
The scientific workshop to review fisheries management, held in Lisbon in May 2011, brought together 22 scientists and fisheries experts from around the world to consider the United Nations General Assembly (UNGA) resolutions on high seas bottom ...
A. Benn, A. Kennys, A.D. Rogers, A.J. Davies, A.J. Grehan, A.J. Penney, D.M. Bailey, D.S.M. Billett, I.G. Priede, J. Guinotte, J.A. Ardron, J.A. Koslow, J.A.A. Perez, K. Baker, L. Watling, M. Gianni, M.R. Clark, P.Durán Muñoz, P.M. Arana, P.P.E. Weaver, R.S. Santos, S.D. Fuller, T. Morato   +22 more
core  

Scour‐Conditioned Seismic Fragility Analysis of Monopile‐Supported Offshore Wind Turbines

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Monopile‐supported offshore wind turbines (MS‐OWTs) are increasingly deployed in seismic coastal regions, where they face compound risks from earthquake loading and seabed scour. While past studies have addressed these hazards separately, seismic fragility under evolving scour conditions remains insufficiently understood. This study introduces
Francisco Pinto, Rodrigo Astroza, Felipe Vicencio, Raffaele De Risi   +3 more
wiley   +1 more source

Automated Filtering of Multibeam Water-Column Data to Detect Relative Abundance of Giant Kelp (Macrocystis pyrifera)

Remote Sensing, 2020
Modern multibeam echosounders can record backscatter data returned from the water above the seafloor. These water-column data can potentially be used to detect and map aquatic vegetation such as kelp, and thus contribute to improving marine habitat ...
Alexandre C. G. Schimel, Craig J. Brown, Daniel Ierodiaconou   +2 more
doaj   +1 more source

Data handling methods and target detection results for multibeam and sidescan data collected as part of the search for SwissAir Flight 111 [PDF]

, 1999
The crash of SwissAir Flight 111, off Nova Scotia in September 1998, triggered one of the largest seabed search surveys in Canadian history. The primary search tools used were sidescan sonars (both conventional and focussed types) and multibeam sonars ...
Bradford, Jim, Hughes Clarke, John E., Lamplugh, Mike, Mayer, Larry A., Parrott, R, Shaw, John   +5 more
core   +1 more source

Depth accuracy in seabed mapping with underwater vehicles [PDF]

Oceans '99. MTS/IEEE. Riding the Crest into the 21st Century. Conference and Exhibition. Conference Proceedings (IEEE Cat. No.99CH37008), 2003
The HUGIN 11 untethered underwater vehicle (UUV) provides detailed seabed survey services to the offshore industry on a commercial basis. This paper discusses the resulting depth accuracy of the digital terrain model (DTM) that can be achieved with an UUV using standard commercially available multibeam echosounders, navigation sensors, pressure ...
openaire   +1 more source

Combining multibeam and single beam echosounders for quantifying gas bubble release from the seafloor

Limnology and Oceanography: Methods, EarlyView.
Abstract Marine gas bubble release is a worldwide phenomenon that impacts the local marine ecosystem and contributes to carbon fluxes with respect to global warming. It is still challenging to assess gas flow for large seep areas (tens of km2), but recent advances in calibrating and processing multibeam echosounder (MBES) data make this problem ...
P. Urban, M. E. Veloso‐Alarcón, J. Greinert   +2 more
wiley   +1 more source

A multi-model ensemble approach to seabed mapping

Journal of Sea Research, 2015
Abstract Seabed habitat mapping based on swath acoustic data and ground-truth samples is an emergent and active marine science discipline. Significant progress could be achieved by transferring techniques and approaches that have been successfully developed and employed in such fields as terrestrial land cover mapping.
Markus Diesing, David Stephens
openaire   +1 more source

From commons to commoning as resistance efforts to blue injustice: A sociohistorical and ethnographical approach

People and Nature, EarlyView.
Abstract Over the last 20 years, collaborative efforts have emerged with the intention of going beyond the pure capitalist economy, seeking to generate transformative community‐based changes that guarantee blue equity, fair distribution and well‐being.
Sílvia Gómez, Alfons Garrido
wiley   +1 more source

Techniques for Classifying Seabed Morphology and Composition on a Subtropical-Temperate Continental Shelf

Geosciences, 2019
In 2017, the New South Wales (NSW) Office of Environment and Heritage (OEH) initiated a state-wide mapping program, SeaBed NSW, which systematically acquires high-resolution (2–5 m cell size) multibeam echosounder (MBES) and marine LiDAR data along
Michelle Linklater, Timothy C. Ingleton, Michael A. Kinsela, Bradley D. Morris, Katie M. Allen, Michael D. Sutherland, David J. Hanslow   +6 more
doaj   +1 more source

Comparing convolutional neural network and random forest for benthic habitat mapping in Apollo Marine Park

Remote Sensing in Ecology and Conservation, EarlyView.
A comparison of Convolutional Neural Network (CNN) and Random Forest (RF) model predictions of benthic habitats within Apollo Marine Park. The CNN (left) and RF (right) classification maps show the spatial distribution of three habitat types: high energy circalittoral rock with seabed‐covering sponges, low complexity circalittoral rock with non‐crowded
Henry Simmons, Dang Nguyen, Benjamin Misiuk, Daniel Ierodiaconou, Sunil Gupta, Oli Dalby, Mary Young   +6 more
wiley   +1 more source