Results 81 to 90 of about 20,891 (205)

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

Identifying Purse Seine Vessel Operations Through Machine Learning Models for Better Spatial Fishing Effort Estimates

Fish and Fisheries, Volume 27, Issue 3, Page 712-725, May 2026.
ABSTRACT Spatial fisheries management requires precise, spatial explicit information on species distribution and fishing impacts. In the NW Mediterranean, the distribution of small pelagic fish (SPF) stocks is currently assessed through annual acoustic surveys.
Joan Sala‐Coromina, Mireia Silvestre, Felipe H. Coutinho, Marta Carreton, Marta Blanco, Jordi Ribera‐Altimir, Laura Recasens, Joan B. Company   +7 more
wiley   +1 more source

Strategy for Detection and High-Resolution Characterization of Authigenic Carbonate Cold Seep Habitats Using Ships and Autonomous Underwater Vehicles on Glacially Influenced Terrain

Frontiers in Marine Science, 2019
Cold seep habitats with authigenic carbonates and associated chemosynthetic communities in glacially influenced terrains constitute an important part of the benthic ecosystems, but they are difficult to detect in large-scale seabed surveys.
Terje Thorsnes, Terje Thorsnes, Shyam Chand, Shyam Chand, Harald Brunstad, Aivo Lepland, Aivo Lepland, Petter Lågstad   +7 more
doaj   +1 more source

Prospects for Arctic Summertime Sea Ice Prediction Based on Arctic Seasonal Prediction System (ArcSPS)

Earth and Space Science, Volume 13, Issue 4, April 2026.
Abstract To satisfy the needs of the Arctic sea ice seasonal prediction in summer, we developed the Arctic Seasonal Prediction System (ArcSPS). This system integrates an Arctic sea ice–ocean–atmosphere coupled model with an ensemble‐based Kalman Filter data assimilation model.
Zhongxiang Tian, Xi Liang, Dakui Wang, Zhuoming Ding, Fu Zhao, Ming Li, Na Liu, Jiaying Huang   +7 more
wiley   +1 more source

Seasonal and Diurnal Patterns of Harbor Porpoise (Phocoena phocoena) Behavior and the Disruptive Effects of Vessel Presence in a High‐Traffic Coastal Habitat

Marine Mammal Science, Volume 42, Issue 2, April 2026.
ABSTRACT Chronic anthropogenic activity is an ongoing threat to the marine environment and presents unique challenges in shallow, coastal habitats where harbor porpoises reside. Harbor porpoises have high metabolic needs and are highly susceptible to negative environmental factors; however, no long‐term studies have been conducted on wild populations ...
Rachel L. Lennon, Shannon Merkle, Jonas Teilmann, Lorenzo Scala, Chris Pierpoint, Victoria Hobson   +5 more
wiley   +1 more source

Unveiling Patterns in Cetacean Strandings Along Southern Atlantic Iberia: Temporal and Spatial Trends, Seasonality, and Causes of Death

Marine Mammal Science, Volume 42, Issue 2, April 2026.
ABSTRACT We compiled 46 years of cetacean strandings in the Algarve, Portugal, describing temporal–spatial patterns, size–sex structure, and causes of death (COD). We analyzed national records and years with a dedicated regional stranding network (SN) to assess annual/seasonal trends, spatial hotspots, and compare biometrics and COD.
Jan Hofman, Sarah Crawford, Ana Fialho, Maria Casero, João Pontes, Ana Silva, Lídia Nicolau, Ana Marçalo   +7 more
wiley   +1 more source

Fish tracking technology development. Phase 1 project definition desk study [PDF]

, 1994
The document reports on Phase 1 of a definition study to appraise the options to develop fish tracking equipment, in particular tags and data logging systems in order to improve the efficiency of the Environment Agency's tracking studies and to obtain a ...
Moore, A, Potter, E.C.E.
core  

State of the Art in Swath Bathymetry Survey Systems [PDF]

, 1988
In the last decade, advances in real-time computing and data storage capabilities have led to significant improvements in bathymetric survey systems and the single point echo-sounder has now been replaced by a variety of highresolution swath mapping ...
de Moustier, Christian
core   +2 more sources

A Frequency–Azimuth Spectrum Estimation Method for Uniform Linear Array Based on Deconvolution

Remote Sensing
The frequency–azimuth (FRAZ) spectrum is a critical characteristic in passive target detection and tracking, as it encapsulates information regarding the signal’s frequency and azimuth.
Daiqiang Lu, Zhiming Cai, Wei Guo, Zhixiang Yao, Huanzhi Cao   +4 more
doaj   +1 more source

Socionic Multi-Agent Systems Based on Reflexive Petri Nets and Theories of Social Self-Organisation [PDF]

This contribution summarises the core results of the transdisciplinary ASKO project, part of the German DFG's programme Sozionik, which combines sociologists' and computer scientists' skills in order to create improved theories and models of artificial ...
Daniel Moldt, Heiko Rölke, Michael Köhler, Rolf von L�de, Roman Langer, R�diger Valk   +5 more
core