Results 91 to 100 of about 5,081,602 (245)
Low frequency continuous active sonar
, 2011 Existing sonar systems are commonly deployed at a low duty cycle, i.e. a short transmit signal is used followed by a long listening time. As a result, the target is only illuminated during a short time resulting in only one detection opportunity per ping.
Vossen, R. van +2 more
core
Integrative Zoology, EarlyView.Juvenile Procambarus clarkii exposed to noise exhibited behavioral changes, shifts in enzymatic activity, and altered expression of stress and immune genes. The findings highlight the sensitivity of invertebrate juveniles to anthropogenic acoustic pollution.
Maria Ceraulo +8 more
wiley +1 more source
Polish Maritime Research, 2017 The article presents and analyses the data recorded during sounding of the Gdansk Bay seabed with the aid of a parametric echosounder and a side-scan sonar.
Grelowska Grażyna +2 more
doaj +1 more source
Successful 22‐Hour Rescue and Release of a 19.5 M Beached Sperm Whale
Integrative Zoology, EarlyView.19.5‐m‐long sperm whale was stranded on a mudflat, China on 19 April 2022. A dramatic 22‐hour rescue mission ultimately saved the whale, enabling it to swim back to sea. ABSTRACT Whales, dolphins, and porpoises are important flagship species and play a vital role in maintaining healthy aquatic ecosystems. However, stranded cetaceans are often doomed if
Zitong Zhou +5 more
wiley +1 more source
, 2014 Item does not contain fulltext[ISBN: 9789491325038] Het SoNaR-corpus is een tekstcorpus dat bestaat uit twee delen, nl. SoNaR-500 en SoNaR-1. SONAR-500 bevat meer dan 500 miljoen woorden tekst afkomstig uit uiteenlopende domeinen en genres.
Heuvel, H. van den +11 more
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Signal Processing and Restoration [PDF]
, 2004 Digital Signal Processing (DSP) concerns the theoretical and practical aspects of representing information-bearing signals in digital form and the use of processors or special purpose hardware to extract that information or to transform the signals in ...
Biemond, J., Slump, C.H.
core +1 more source
UNIQAT: An open‐source toolkit for reproducible image quality assessment in marine surveys
Methods in Ecology and Evolution, EarlyView.Abstract Modern marine surveys generate tens of thousands of underwater images per expedition, yet many are unusable due to image quality deterioration. Manual quality screening is labour‐intensive, subjective and inconsistent across observers and teams, hindering reproducible science, creating large backlogs of unprocessed imagery, and limiting real ...
Alzayat Saleh, Arjun Chennu
wiley +1 more source
Sonar signal processing and shallow water acoustics [PDF]
The Journal of the Acoustical Society of America, 1993 Sonars operating in shallow water usually encounter what signal processors term a reverberation-limited environment; higher signal levels simply lead to higher reverberation and not to improved performance. Consequently, the principal means of improving sonar performance is to use signals appropriate for the task and environment.
openaire +1 more source
Distributed acoustic sensing for marine mammal monitoring
Methods in Ecology and Evolution, EarlyView.Abstract Marine mammal monitoring provides critical data to inform species management and sustainable industrial development. Passive acoustic monitoring, in particular, can provide continuous, long‐term and non‐observer‐biased data, with a subset of systems capable of delivering data in near‐real time.
Léa Bouffaut
wiley +1 more source
Movement Responses of Seals During Pile Driving for Offshore Wind Farm Construction
Animal Conservation, EarlyView.Despite rapid growth of the renewable energy industry to meet climate change targets, predictions of population‐level impacts on wildlife are currently hindered by a limited understanding of individual behavioural responses to these developments.
Katherine F. Whyte +4 more
wiley +1 more source