Results 121 to 130 of about 28,411 (301)
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
Sensor-assisted video mapping of the seafloor
Oceans '02 MTS/IEEE, 2005 In recent years video surveys have become an increasingly important ground-truthing of acoustic seafloor characterization and benthic habitat mapping studies. However, the ground-truthing and detailed characterization provided by video are still typically done using sparse sample imagery supplemented by physical samples.
Rzhanov, Yuri +3 more
openaire +3 more sources
Sedimentology, EarlyView.ABSTRACT Mesophotic reefs are located in low light conditions which, depending on the region, are usually found in water depths greater than ~30 m. They are less affected by ocean warming than reefs found in shallower water depths and thus might become increasingly important for the sustainability of marine biodiversity.
Or M. Bialik +7 more
wiley +1 more source
Sedimentology, EarlyView.ABSTRACT The Gollum Channel System is a land‐detached large‐scale canyon‐channel system situated offshore southwest Ireland on the Northeast Atlantic margin. The system has been considered inactive with downslope gravity flows since the last glacial period, but geophysical data in some of its branches do suggest Holocene activity.
Lotte Verweirder +8 more
wiley +1 more source
A Survey of Seafloor Characterization and Mapping Techniques
Remote SensingThe deep seabed is composed of heterogeneous ecosystems, containing diverse habitats for marine life. Consequently, understanding the geological and ecological characteristics of the seabed’s features is a key step for many applications.
Gabriel Loureiro +5 more
doaj +1 more source
Seamount Discovery Tool Aids Navigation to Uncharted Seafloor Features [PDF]
Oceanography, 2010 Wessel et al. (2010) highlight the need for a systematic mapping of seamounts in ocean basins. They estimate that 100,000 or 90% of the seamounts greater than 1-km tall are unobserved by either ship soundings or satellite gravity.
David T. Sandwell, Paul Wessel
doaj
Monitoring Near-Shore Bathymetry Using a Multi-Image Satellite-Derived Bathymetry Approach [PDF]
, 2015 Two advanced survey systems for hydrographic surveying are multi-beam echsounder (MBES) and airborne lidar bathymetry (ALB). Compared to more traditional hydrographic surveying methods, these systems provide both highly accurate and a dense coverage of ...
Alexander, Lee +6 more
core +1 more source
U.S. Extended Continental Shelf Cruise to Map Gaps in Kela and Karin Ridges, Johnston Atoll, Equatorial Pacific Ocean [PDF]
, 2014 The objectives for cruise KM14-17 are to map the bathymetry of two gaps in two submarine ridges in the vicinity of Johnston Atoll. One ridge gap occurs along the informally named Keli Ridge (Hein et al., 2005) south of Johnston Atoll and the other ridge ...
Armstrong, Andy, Gardner, James V.
core +1 more source
Frontiers in Marine ScienceThe Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2), featuring the advanced topographic laser altimeter system (ATLAS), pioneered spaceborne photon-counting LiDAR technology.
Yifu Chen +11 more
doaj +1 more source
The limits of spatial resolution achievable using a 30kHz multibeam sonar: model predictions and field results [PDF]
, 1998 A Simrad EM300 multibeam sonar was used to attempt to resolve small (-5m high) targets in 450m of water. The targets had previously been surveyed using a deeply towed 59 kHz sidescan sonar.
Gardner, James V. +3 more
core +1 more source