Results 71 to 80 of about 177,356 (271)

Development of buoyancy regulating system for underwater glider

open access: yesZhongguo Jianchuan Yanjiu, 2018
[Objectives] Buoyancy regulating system is a key component of an underwater glider for controlling submerging and surfacing statuses and gliding speed of the underwater glider.
YANG Hai, LIU Yanji
doaj   +1 more source

Exploring Ocean Biogeochemistry Using a Lab-on-Chip Phosphate Analyser on an Underwater Glider

open access: yesFrontiers in Marine Science, 2021
The ability to make measurements of phosphate (PO43–) concentrations at temporal and spatial scales beyond those offered by shipboard observations offers new opportunities for investigations of the marine phosphorus cycle.
Antony J. Birchill   +9 more
semanticscholar   +1 more source

Identification of the Dynamics of Biofouled Underwater Gliders [PDF]

open access: yes2020 IEEE/OES Autonomous Underwater Vehicles Symposium (AUV)(50043), 2020
Marine growth has been observed to cause a drop in the horizontal and vertical velocities of underwater gliders, thus making them unresponsive and needing immediate recovery. Currently, no strategies exist to correctly identify the onset of marine growth for gliders and only limited datasets of biofouled hulls exist.
Anderlini, Enrico   +6 more
openaire   +2 more sources

Beyond mammals: the evolution of chewing and other forms of oropharyngeal food processing in vertebrates

open access: yesBiological Reviews, EarlyView.
ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz   +6 more
wiley   +1 more source

Real - Time Detection and Communication System for Underwater Acoustic Gliders and Their Offshore Experimental

open access: yes水下无人系统学报
While performing underwater observation and detection, the underwater acoustic glider needs to finish the current profile glide to float to the surface for information exchange and thus fails to realize real-time data information return. In this paper, a
Deyan TIAN   +4 more
doaj   +1 more source

Numerical investigation on the hydrodynamic characteristics of an autonomous underwater glider with different wing layouts [PDF]

open access: yes, 2017
An autonomous underwater glider is a self-propelled underwater vehicle which is designed primarily for oceanography. It moves with low speed in saw-tooth pattern and has long endurance.
Hashim, F. B. M.   +5 more
core  

Relationships between acoustic scattering layers and ocean stratification: An acoustic approach to estimate mixed layer depth

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Ocean stratification, measured as mixed layer depth (MLD), is an important feature that influences many processes in the ocean; for example, by mediating the fluxes of momentum, heat and crucially key gases such as CO2 and oxygen from the atmosphere into the water column and vice versa. The conventional methods to measure stratification (e.g.,
Fabio Campanella   +2 more
wiley   +1 more source

RRS Discovery Cruise 381, 28 Aug - 03 Oct 2012. Ocean Surface Mixing, Ocean Submesoscale Interaction Study (OSMOSIS) [PDF]

open access: yes, 2013
Cruise D381 was made in support of NERC's Ocean Surface Boundary Layer theme action programme, OSMOSIS (Ocean Surface Mixing, Ocean Sub-mesoscale Interaction Study).
Allen, J.T.   +2 more
core   +1 more source

Surrogate based blended-wing-body underwater glider shape optimization design

open access: yesXibei Gongye Daxue Xuebao, 2021
In order to improve the design quality and optimization efficiency for blended-wing-body underwater glider(BWBUG) shape design optimization problems, a surrogate-based blended-wing-body underwater glider shape optimization(SBUGSO) framework is proposed ...

doaj   +1 more source

Streamlines for Motion Planning in Underwater Currents [PDF]

open access: yes, 2019
Motion planning for underwater vehicles must consider the effect of ocean currents. We present an efficient method to compute reachability and cost between sample points in sampling-based motion planning that supports long-range planning over hundreds of
Anstee, Stuart   +4 more
core   +1 more source

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