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Full-Text Articles in Physical Sciences and Mathematics
Cenozoic Paleoceanography 1986: An Introduction, W. H. Berger, Larry A. Mayer
Cenozoic Paleoceanography 1986: An Introduction, W. H. Berger, Larry A. Mayer
Affiliate Scholarship
New developments in Cenozoic paleoceanography include the application of climate models and atmospheric general circulation models to questions of climate reconstruction, the refinement of conceptual models for interpretation of the carbon isotope record in terms of carbon mass balance, paleocirculation, paleoproductivity, and the regional mapping of paleoceanographic events by acoustic stratigraphy. Sea level change emerges as a master variable to which changes in the ocean environment must be traced in many cases, and tests of the onlap-offlap paradigm therefore are of crucial importance.
On-Line Sea Beam Acoustic Imaging, Christian De Moustier, F V. Pavlicek
On-Line Sea Beam Acoustic Imaging, Christian De Moustier, F V. Pavlicek
Center for Coastal and Ocean Mapping
This paper describes a system designed and built at the Marine Physical Laboratory of the Scripps Institution of Oceanography to produce acoustic images of the seafloor on-line with a Sea Beammultibeam echo-sounder. This system uses a stand alone interface between the Sea Beam system and a grey-scale line-scan recorder. The interface is built around a Motorola 68000 microprocessor and has digitizing capabilities. It digitizes the detected echo signals from each of the 16 preformed beams inside the Sea Beam echo processor as well as the roll information given by the ship's vertical reference. Theacoustic data are then roll compensated and …