Results 101 to 110 of about 46,415 (246)
Journal of Marine Science and EngineeringSeafloor topography data are fundamental for marine resource development, oceanographic research, and maritime rights protection. However, approximately 75% of the ocean remains unsurveyed for bathymetry.
Qiang Wang +11 more
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Understanding satellite-derived bathymetry using Sentinel 2 imagery and spatial prediction models
GIScience & Remote Sensing, 2020 Optical satellite data is an efficient and complementary method to hydrographic surveys for deriving bathymetry in shallow coastal waters. Empirical approaches (in particular, the models of Stumpf and Lyzenga) provide a practical methodology to derive ...
Gema Casal +5 more
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High Resolution Mapping in support of UNCLOS Article 76: Seeing the seafloor with new eyes [PDF]
, 2007 Since 2003, the Center for Coastal & Ocean Mapping/Joint Hydrographic Center at the University of New Hampshire (UNH) has been conducting multibeam mapping of many U.S.
Armstrong, Andy +2 more
core +2 more sources
MAGIC: conoscere i mari italiani e individuarne i geo-rischi
GEOmedia, 2010 MAGIC project: Marine Geohazard along the Italian Coasts MAGIC Project is funded by the Italian Civil Protection Department (DPC) to produce a bathymetric database as reference for compiling maps (1:50.000) of marine geo-hazard.
Alessandro Bosman +4 more
doaj +2 more sources
Anti-Interference Bottom Detection Method of Multibeam Echosounders Based on Deep Learning Models
Remote SensingMultibeam echosounders, as the most commonly used bathymetric equipment, have been widely applied in acquiring seabed topography and underwater sonar images.
Junxia Meng, Jun Yan, Qinghe Zhang
doaj +1 more source
Geosciences, 2018 Cold-water coral reefs are rich, yet fragile ecosystems found in colder oceanic waters. Knowledge of their spatial distribution on continental shelves, slopes, seamounts and ridge systems is vital for marine spatial planning and conservation.
Markus Diesing, Terje Thorsnes
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Development of Topological Correction Algorithms for ADCP Multibeam Bathymetry Measurements
Journal of the Environmental Sciences international, 2013 Acoustic Doppler Current Profilers (ADCPs) are increasingly popular in the river research and management communities being primarily used for estimation of stream flows. ADCPs capabilities, however, entail additional features that are not fully explored, such as morphological representation of river or reservoir bed based upon multi-beam depth ...
Dong-Su Kim +3 more
openaire +2 more sources
Automatic Detection of Outliers in Multibeam Echo Sounding Data [PDF]
, 2001 The data volumes produced by new generation multibeam systems are very large, especially for shallow water systems. Results from recent multibeam surveys indicate that the ratio of the field survey time, to the time used in interactive editing through ...
Hou, Tianhang +2 more
core +1 more source
Analysis of three selected automated multibeam bathymetric filters in BeamWorX AutoClean Software
Nova GeodesiaThe increasing volume of bathymetric data acquisition, driven by citizen science initiatives and advancements in hydrographic survey technologies, particularly multibeam and LiDAR sensors, necessitates automated data-cleaning procedures.
Daniel Devote BASIL
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Using Multibeam Echosounders for Hydrographic Surveying in the Water Column: Estimating Wreck Least Depths [PDF]
, 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