Results 111 to 120 of about 1,765,935 (236)

sonar

open access: yes
source code of ...
Annoymous author (8479637)
core   +1 more source

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

open access: yesIET 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

High Resolution Field Observations of Shoreward Sediment Transport Within the Wave Bottom Boundary Layer on a Sandy Beach

open access: yesEarth and Space Science, Volume 13, Issue 9, September 2026.
Abstract We introduce a data archive containing the first highly resolved profiles of velocity and sediment concentration within the wave bottom boundary layer (WBBL) on a natural sandy beach. Resolution of the thin WBBL was made possible by deployment of a unique “Multi‐Frequency Doppler” (MFDop) bistatic acoustic profiling instrument on an Oregon ...
Gregory W. Wilson   +4 more
wiley   +1 more source

Decadal‐Scale Bathymetric Change in a Shallow Coastal Bay

open access: yesJournal of Geophysical Research: Oceans, Volume 131, Issue 9, September 2026.
Abstract Coastal marshes and bays must accumulate sediment to maintain their position relative to mean sea level during periods of sea level rise (SLR). Resuspension of bay‐bottom sediment, which together with tidal inundation promotes marsh deposition, is sensitive to water depth, but quantitative measurements of bathymetric change across shallow bays
Tyler E. Barnes   +2 more
wiley   +1 more source

Active sonar performance modelling for Doppler-sensitive pulses

open access: yes, 2021
Accurate sonar performance modelling is essential to predict likely detection ranges that can be obtained by employing active anti-submarine warfare sonars. Reverberation forms an important source of interference for active sonar performance, the effects
Prior, M.K., Colin, M., Hartstra, I.E.
core  

Acoustic Detection of Underwater Air Bubbles Generated by Breaking Waves in an Antarctic Polynya

open access: yesJournal of Geophysical Research: Oceans, Volume 131, Issue 9, September 2026.
Abstract The Southern Ocean is a significant sink for anthropogenic CO2 in the atmosphere. The pelagic regions north of sea ice areas primarily absorb atmospheric CO2 via biological productivity and air‐sea gas exchange. The latter is enhanced by the bubbles generated by breaking waves.
Masato Ito   +5 more
wiley   +1 more source

Radical‐Mediated Dispersion Breaks Aggregation Limits in Carbon Thermoelectrics

open access: yesAngewandte Chemie, Volume 138, Issue 35, 24 August 2026.
We report a rationally designed small molecule (OTN) that effectively disperses SWCNTs via π–π and radical‐radical interactions, yielding hybrid films with a record power factor of 30.1 µW cm−1 K−2 and excellent flexibility. A nine‐leg device achieves a record normalized power density of 0.653 µW cm−2 K−2, setting a new benchmark for carbon‐based ...
Shanshan Zhou   +9 more
wiley   +2 more sources

Comparative Field Evaluation of Active and Passive Transient‐Based Techniques for Pipeline Condition Assessment

open access: yesWater Resources Research, Volume 62, Issue 9, September 2026.
Abstract Hydraulic transient‐based techniques are increasingly applied for non‐intrusive condition assessment of buried water pipelines. This study presents systematic field experiments comparing active and passive approaches within the asbestos cement water supply network at the University of Canterbury.
Sirui Wang   +5 more
wiley   +1 more source

Quantifying Differences Between Floodplain Waterbody Connectivity and River‐Floodplain Connectivity in a Coastal Meandering River

open access: yesWater Resources Research, Volume 62, Issue 9, September 2026.
Abstract Riparian landscapes support biodiverse and productive ecosystems that in turn provide valuable services like water filtration and flood attenuation. Extensive anthropogenic modifications to riparian environments have altered natural water connectivity patterns important for ecosystem health, leading to an increased effort to understand and ...
Elena Lundeen, Andrew J. Moodie
wiley   +1 more source

Facilitating macrosystem biology with organismal‐scale airborne remote sensing: Challenges and opportunities

open access: yesFunctional Ecology, Volume 40, Issue 9, Page 2760-2776, September 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Emergent ecosystem properties, such as population and trait distributions, biodiversity and energy and water fluxes, occur because of the dynamic interactions of individuals in their environment.
Sarah J. Graves   +8 more
wiley   +1 more source

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