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Practical Differences Between Photogrammetric Bathymetry and Physics-Based Bathymetry
IEEE Geoscience and Remote Sensing Letters, 2022Optical satellite remote sensing (RS) is a time- and cost-effective approach for shallow-water bathymetry over large areas. The photogrammetric and physics-based methods, which do not require in situ depth calibration data, are two implementations of RS-based bathymetry.
Bin Cao +5 more
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Applied Optics, 1982
The design and performance of a short-pulse high-repetition-rate CuBr laser suitable for bathymetry is described. The pulse width and peak power were 4.5 nsec and 30 kW, respectively, corresponding to 140 microJ/pulse. These conditions occurred at a repetition rate of 16 kHz and an overall efficiency of 0.14% within a compact long-lived sealed-off ...
D W, Feldman, C S, Liu, I, Liberman
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The design and performance of a short-pulse high-repetition-rate CuBr laser suitable for bathymetry is described. The pulse width and peak power were 4.5 nsec and 30 kW, respectively, corresponding to 140 microJ/pulse. These conditions occurred at a repetition rate of 16 kHz and an overall efficiency of 0.14% within a compact long-lived sealed-off ...
D W, Feldman, C S, Liu, I, Liberman
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Eos, Transactions American Geophysical Union, 1944
During the ice‐ages the formation of extensive inland‐ice caps took up a certain amount of water from the oceans and thus the sea‐level should then be slightly lower, and shore‐lines should retreat seaward.On the contrary, the overcharge of the glacial areas, in the case of a perfect isostatic equilibrium, should cause a sinking of the land, an advance
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During the ice‐ages the formation of extensive inland‐ice caps took up a certain amount of water from the oceans and thus the sea‐level should then be slightly lower, and shore‐lines should retreat seaward.On the contrary, the overcharge of the glacial areas, in the case of a perfect isostatic equilibrium, should cause a sinking of the land, an advance
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1990
Abstract The oceanic regions located north of the Arctic Circle are the Arctic Ocean, the Norwegian-Greenland Sea, and Baffin Bay (Plate 1). The latter is described in Keen and Williams (1990). Despite the bold isobaths in Plate 1, the bathymetry of the Arctic Ocean is still poorly known. Most of the Norwegian-Greenland Sea, on the other
G. L. Johnson +2 more
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Abstract The oceanic regions located north of the Arctic Circle are the Arctic Ocean, the Norwegian-Greenland Sea, and Baffin Bay (Plate 1). The latter is described in Keen and Williams (1990). Despite the bold isobaths in Plate 1, the bathymetry of the Arctic Ocean is still poorly known. Most of the Norwegian-Greenland Sea, on the other
G. L. Johnson +2 more
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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
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Airborne electromagnetic bathymetry
Geophysics, 1984Abstract Airborne electromagnetic techniques provide an efficient means for determining the bathymetry of shallow seas and coastal regions. Offshore time-domain data collected with the INPUT system may be interpreted quickly and inexpensively using the simple table look-up algorithm described here.
A. Becker +3 more
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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 ...
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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 ...
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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
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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