Results 71 to 80 of about 12,890 (241)

Redefining Optimal Coverage Path Planning for FLS‐Equipped AUVs With Deep Reinforcement Learning

Journal of Field Robotics, EarlyView.
ABSTRACT Autonomous Underwater Vehicles (AUVs) have emerged as indispensable tools for a variety of subsea tasks, from habitat monitoring and seabed mapping to infrastructure inspection and mine countermeasures. A fundamental challenge in this field is Coverage Path Planning (CPP), the problem of ensuring complete and efficient area coverage.
Lorenzo Cecchi, Alberto Topini, Alessandro Bucci, Alessandro Ridolfi   +3 more
wiley   +1 more source

Flow measurements with ADCP on the Guaíba River, during the highest water level recorded in history - May 2024 (floods in the State of Rio Grande do Sul, Brazil) [PDF]

RBRH
This Technical Note aims to present data from in-situ measurements conducted with Acoustic Doppler Current Profiler (ADCP) under the highest level recorded in the Guaíba River.
Mauro Michelena Andrade, Márcio Piazera, Ruan da Luz, José Carlos Rodrigues Nunes, Fernando Scottá, Tatiana Silva   +5 more
doaj   +1 more source

Engineered Gravel Trench Hyporheic Exchange to Create Cold‐Water Thermal Refuges

River Research and Applications, EarlyView.
ABSTRACT Warming rivers are driving a loss or fragmentation of cold‐water habitat and providing the impetus to develop proactive thermal management approaches to maintain suitable habitat in rivers. One innovative approach is through the creation of cold‐water thermal refuges during periods of thermal stress for aquatic species.
Kathryn A. Smith, Edmund A. Halfyard, Christa Kelleher, Barret L. Kurylyk   +3 more
wiley   +1 more source

Within-Event Spatially Distributed Bedload: Linking Fluvial Sediment Transport to Morphological Change [PDF]

, 2012
Maps of apparent bedload velocity are presented along with maps of associated channel change. Apparent bedload velocity is the bias in acoustic Doppler current profiler (aDcp) bottom track (Doppler sonar) due to near-bed particle motion (Rennie et al ...
Brasington, J., Hicks, M., Reenie, C.D., Vericat, D., Williams, R.   +4 more
core  

Strategies for Assessing Post‐Wildfire Geomorphic Resilience in Semiarid Rivers

River Research and Applications, EarlyView.
ABSTRACT We review and summarize diverse components of a catchment that can be monitored after wildfire to assess the geomorphic resilience of the river corridor in semiarid regions. We distinguish upland portions of river catchments from river corridors.
Ellen Wohl, Shayla Triantafillou, Alex Thornton‐Dunwoody, Connor Mertz, Katie Larkin, William Keenan, Steven Griffin, Dylan Davis, Lindsey Blehm   +8 more
wiley   +1 more source

CSU FIRE 2 cirrus field experiment: Description of field deployment phase [PDF]

, 1992
The Colorado State University (CSU) surface observing systems are described. These systems were deployed at the Parsons, Kansas site during the FIRE 2 Cirrus Special Observing Period (SOP) from 13 Nov. - 7 Dec. 1991.
Alvarez, J., Anikin, P., Beck, G., Cornwall, C., Cox, S., Davis, J., Hein, P., Lappen, C., Song, R., Wood, D., Wothrow, J.   +10 more
core   +1 more source

Subtidal water level variation controlled by river flow and tides [PDF]

, 2009
Subtidal water level dynamics in the Berau river, East Kalimantan, Indonesia, feature a pronounced fortnightly variation. The daily mean water levels at a station about 60 km from the sea are 0.2–0.6 m higher during spring tide than during neap tide.
Buschman, F.A., Hoekstra, P., Hoitink, A.J.F., Vegt, M., van der   +3 more
core   +2 more sources

New Design of Acoustic Doppler Current Profiler

International Journal Of Engineering And Computer Science, 2016
This paper gives a new design of Acoustic Doppler Current Profiler (ADCP). It basically works on the principle of Doppler Effect. Development of Acoustic Doppler Current Profiler is given. Types of ADCP’s are depending on mounting are horizontally mounted ADCP’s and vertically mounted ADCP’s.
openaire   +1 more source

Rhyming in the cold: first evidence of soniferous fishes in the Southern Ocean

Remote Sensing in Ecology and Conservation, EarlyView.
The acoustic ecology of Southern Ocean fishes remains unknown due to a lack of dedicated acoustic research on the fishes of this ocean. Passive acoustic monitoring data were collected at the South African sub‐Antarctic Prince Edward Islands using an underwater acoustic recorder, and towed underwater Ski‐Monkey cameras were deployed to identify fish ...
Fannie W. Shabangu, Grant van der Heever, Charles von der Meden, Hannah Truter, Stephen J. Lamberth, Ofer Gon   +5 more
wiley   +1 more source

Description and evaluation of the Acoustic Profiling of Ocean Currents (APOC) system used on R. V. Oceanus cruise 96 on 11-22 May 1981 [PDF]

The underway current profiling system which consists of a microprocessor controlled data logger that collects and formats data from a four beam Ametek-Straza 300 kHz acoustic Doppler current profiler, heading from the ship's gyrocompass, and navigation ...
Barbour, R. L., Joyce, T. M., Rintoul, S. R., Jr.   +2 more
core   +1 more source