Results 271 to 280 of about 85,904 (293)
Some of the next articles are maybe not open access.
2010
Smoothing bathymetry is a necessary step of any run of ROMS. Here the software bathymetry is demonstrated that allows optimal solution of the problem for a fixed roughness factor.
Janeković, Ivica +1 more
openaire +1 more source
Smoothing bathymetry is a necessary step of any run of ROMS. Here the software bathymetry is demonstrated that allows optimal solution of the problem for a fixed roughness factor.
Janeković, Ivica +1 more
openaire +1 more source
Rapid estimation of bathymetry from multispectral imagery without in situ bathymetry data
Applied Optics, 2019Optimization-based semi-analytical methods (OSMs) and empirical methods (EMs) have been developed to derive bathymetry maps from satellite-based multispectral data of coral reefs, allowing for the management, monitoring, and protection of coral reefs.
Yongming Liu +7 more
openaire +2 more sources
IEEE Journal of Oceanic Engineering, 1996
For many years, GLORIA has been producing sonar images of the deep ocean floor. In the mid-1980's, the SeaMARC II system came to prominence producing depth values as well as sonar images. The basic method compares the phases of the signals returning from the seafloor to two rows of transducers. The phase differences are converted into angles of arrival
T.P. Le Bas +3 more
openaire +1 more source
For many years, GLORIA has been producing sonar images of the deep ocean floor. In the mid-1980's, the SeaMARC II system came to prominence producing depth values as well as sonar images. The basic method compares the phases of the signals returning from the seafloor to two rows of transducers. The phase differences are converted into angles of arrival
T.P. Le Bas +3 more
openaire +1 more source
Marine Geology, 1967
Abstract Trace fossil communities are mainly bathymetry-controlled. Their relative depth sequence has been established in sedimentary series of up to Cambrian age. Actual depth figures can now be added from counterparts in the present oceans. As exemplified by the spreite burrows, behavioural response to a bathymetric gradient in food suply is ...
openaire +1 more source
Abstract Trace fossil communities are mainly bathymetry-controlled. Their relative depth sequence has been established in sedimentary series of up to Cambrian age. Actual depth figures can now be added from counterparts in the present oceans. As exemplified by the spreite burrows, behavioural response to a bathymetric gradient in food suply is ...
openaire +1 more source
2000
The two previous chapters described how depth measurements are made and elaborated on the accuracy and strengths of each type of data. Clearly, it would be wonderful if the entire world ocean were covered with multibeam data, but at the present time, there is only limited coverage; only a few ships are equipped with multibeam, and their speed remains ...
openaire +1 more source
The two previous chapters described how depth measurements are made and elaborated on the accuracy and strengths of each type of data. Clearly, it would be wonderful if the entire world ocean were covered with multibeam data, but at the present time, there is only limited coverage; only a few ships are equipped with multibeam, and their speed remains ...
openaire +1 more source
2009
The previous chapter (Chapter 2) presented basic acoustic theory, from the generation of a sound wave to its scattering on/in the seabed and its reception by the sonar platform. Acoustic pressures are used to quantify the response of the seabed at the particular frequency used. These backscatter measurements are combined across-track to create a swath,
openaire +1 more source
The previous chapter (Chapter 2) presented basic acoustic theory, from the generation of a sound wave to its scattering on/in the seabed and its reception by the sonar platform. Acoustic pressures are used to quantify the response of the seabed at the particular frequency used. These backscatter measurements are combined across-track to create a swath,
openaire +1 more source