Methods of Hydrographic Surveying Used by Different Countries.
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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Specifications, procedures, methods and techniques for hydrographic surveying employed by different countries have been examined and compared with each other as well as with the IHO recommended standards. The agencies within the considered countries are the U.S. National Ocean Survey, the British Hydrographic Department, the Canadian Hydrographic Service and the Hellenic Navy Hydrographic Service. Topics covered include the establishment of horizontal control, connection of sounding datums to vertical control, conventional hydrographic methods and automation. Of particualr interest are the Canadian classification of horizontal control through the concept of confidence region, the root mean square error drms adopted by the U.S. NOS for the develoment of position specifications and the Canadian variation of the bar check method for the determination of echo sounder corrections. Author
- Physical and Dynamic Oceanography