Results 141 to 150 of about 228,033 (349)

COMPUTER-AIDED DETECTION & CLASSIFICATION OF SIDESCAN SONAR IMAGES FROM THE CITADEL TRIAL [PDF]

, 2023
Jacqueline Fawcett, Michel Couillard, David Hopkin, Anna Crawford, Vincent Myers, Benoît Zerr   +5 more
openalex   +1 more source

Collecting a corpus of Dutch SMS [PDF]

, 2012
In this paper we present the first freely available corpus of Dutch text messages containing data originating from the Netherlands and Flanders. This corpus has been collected in the framework of the SoNaR project and constitutes a viable part of this ...
De Clercq, Orphée, Oostdijk, Nelleke, Treurniet, Maaske, van den Heuvel, Henk   +3 more
core   +2 more sources

Evaluating the possible role of bottom currents and internal waves in shaping seafloor morphology in a mesophotic reef

Sedimentology, EarlyView.
ABSTRACT Mesophotic reefs are located in low light conditions which, depending on the region, are usually found in water depths greater than ~30 m. They are less affected by ocean warming than reefs found in shallower water depths and thus might become increasingly important for the sustainability of marine biodiversity.
Or M. Bialik, Henriette Wilckens, Omri Gadol, Aaron Micallef, Christian Betzler, Ole Johannes R. Sørensen, Hagai Nativ, Yizhaq Makovsky   +7 more
wiley   +1 more source

Environmentally Adaptive Sonar Technology (EAST) project report for participation in the Littoral Warfare Advanced Development (LWAD) 99-3 experiment [PDF]

, 2000
Prepared for: Littoral Warfare Advanced Development (LWAD) ProgramThe objective of the Environmentally Adaptive Sonar Technology (EAST) project is to develop approaches to improve shallow water target detection for Navy active sonar systems.
Shipley, Mitchell N.
core  

Variations in downslope activity and bottom current dynamics in a land‐detached submarine channel system since the Last Glacial Maximum

Sedimentology, EarlyView.
ABSTRACT The Gollum Channel System is a land‐detached large‐scale canyon‐channel system situated offshore southwest Ireland on the Northeast Atlantic margin. The system has been considered inactive with downslope gravity flows since the last glacial period, but geophysical data in some of its branches do suggest Holocene activity.
Lotte Verweirder, Aggeliki Georgiopoulou, Kobus Langedock, Fred Fourie, Martin White, Sara Benetti, Fabio Sacchetti, Wieter Boone, David Van Rooij   +8 more
wiley   +1 more source

Seasonal Characterisation of Sonar Performance for Effective Underwater Surveillance in the Marmara Sea

IET Radar, Sonar & Navigation
This study analyses sonar performance for underwater object detection in four regions of the Marmara Sea, using oceanographic data from the Turkish Naval Forces and open source datasets.
Murat Murat, Ugur Kesen
doaj   +1 more source

Formation process of the gravel‐dominated deposit from the 2011 Tohoku‐oki tsunami in Ofunato, northeastern Japan, inferred by integrating sedimentology and tsunami modelling

Sedimentology, EarlyView.
ABSTRACT Tsunami deposits serve as geological records of past events and are essential for understanding the occurrence and dynamics of tsunamis. However, conventional research has largely focused on sandy and boulder deposits, leaving gravel‐dominated tsunami deposits comparatively underexplored; furthermore, their characteristics and formation ...
Hidetoshi Masuda, Haruki Imura, Koki Nakata, Takashi Ishizawa, Daisuke Sugawara, Kazuhisa Goto   +5 more
wiley   +1 more source

Method for shaping and aiming narrow beams [PDF]

, 1981
A sonar method and apparatus is discribed which utilizes a linear frequency chirp in a transmitter/receiver having a correlator to synthesize a narrow beamwidth pattern from otherwise broadbeam transducers when there is relative velocity between the ...
Heyser, R. C.
core   +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

Multistatic Modular Real‐Time MIMO‐SONAR Systems

IET Radar, Sonar & Navigation
Mulitstatic SONAR networks (MSNs) have the potential to improve the imaging quality of underwater areas due to the increased degree of freedom. The additional signal processing required for such a network of distributed SONAR nodes compared to monostatic
Frederik Kühne, Marco Driesen, Karoline Gussow, Bastian Kaulen, Jan Abshagen, Gerhard Schmidt   +5 more
doaj   +1 more source