Results 81 to 90 of about 20,037 (164)

RRS Discovery Cruise 248, 07 Jul-10 Aug 2000. A multidisciplinary study of the environment and ecology of deep-water coral ecosystems and associated seabed facies and features (The Darwin Mounds, Porcupine Bank and Porcupine Seabight) [PDF]

open access: yes, 2001
RRS Discovery Cruise 248 aimed to carry out a multidisciplinary study of the environment and ecology of deep-water coral ecosystems and associated seabed features in the northeast Atlantic.
Bett, B.J.   +3 more
core  

Video imaging in turbid water [PDF]

open access: yes
In order to describe seabed habitats and to identify and quantify spatial patterns information is needed at different scales. Whereas ground-truthing techniques are used to gain point information, remote sensing techniques are used to obtain information ...
Dalfsen, J.A., van
core   +2 more sources

The use of multibeam sonar mapping techniques to refine population estimates of the endangered white abalone (Haliotis sorenseni) [PDF]

open access: yes, 2006
Multibeam sonar mapping techniques provide detailed benthic habitat information that can be combined with the data on species-specific habitat preferences to provide highly accurate calculations of populations in a particular area. The amount of suitable
Butler, John   +4 more
core  

Mapping the Canyon [PDF]

open access: yes
In this activity, students will learn about the bathymetry of Hudson Canyon, a submarine canyon on the Atlantic coast of North America. As they study Hudson Canyon, they will compare and contrast topographic maps and bathymetric maps, investigate the ...

core   +1 more source

Shellfish Population and Bed Dimension Assessment in the Great Bay Estuary [PDF]

open access: yes, 2002
This final report details a study funded by the NHEP over the course of 2001-02. The NHF&G Department was funded to delineate oyster bed size and density, monitor oyster disease, and examine the density of clam concentrations in the Great Bay ...
Smith, Brian
core   +2 more sources

On Importance of Acoustic Backscatter Corrections for Texture-based Seafloor Characterization [PDF]

open access: yes, 2012
Seafloor segmentation and characterization based on local textural properties of acoustic backscatter has been a subject of research since 1980s due to the highly textured appearance of sonar images. The approach consists of subdivision of sonar image in
Fakiris, E, Rzhanov, Yuri, Zoura, D
core   +1 more source

Review: Marine Seismic And Side-Scan Sonar Investigations For Seabed Identification With Sonar System

open access: yesJGEET: Journal of Geoscience, Engineering, Environment and Technology, 2017
Marine seismic reflection data have been collected for decades and since the mid-to late- 1980s much of this data is positioned relatively accurately.
Muhammad Zainuddin Lubis   +3 more
doaj   +1 more source

Using Multibeam Echosounders for Hydrographic Surveying in the Water Column: Estimating Wreck Least Depths [PDF]

open access: yes, 2015
Wreck superstructure can extend into the water column and pose a danger to navigation if the least depth is not accurately portrayed to mariners. NOAA has several methods available to acquire a wreck least depth: lead line, wire drag, diver investigation,
Armstrong, Andy   +2 more
core   +1 more source

Small object detection in side-scan sonar images based on SOCA-YOLO and image restoration

open access: yesFrontiers in Marine Science
Although side-scan sonar can provide wide and high-resolution views of submarine terrain and objects, it suffers from severe interference due to complex environmental noise, variations in sonar configuration (such as frequency, beam pattern, etc.), and ...
Xiaodong Cui   +4 more
doaj   +1 more source

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