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dc.contributor.authorHarris, D. Lee, 1916--
dc.descriptionSpecial Reporten_US
dc.description.abstractAbstract: The boundary between sea and land appears to be the natural datum of reference for measuring elevation of land or depth of the sea. This boundary, however, varies continuously because of the astronomical tides and for other reasons. The various factors which cause this variability are discussed with emphasis on the astronomical tides as the most predictable of the phenomena which affect sea level. Several tidal datums of practical importance are described. Sources of detailed information are identified. Difficulties associated with surveys which extend over a wide range of latitude and elevation are discussed. Statistical characteristics of the astronomical tides at various U.S. ports are investigated and documented with graphs and tables. The distribution function for astronomical tidal, heights is found to be nearly symmetric at many stations. At many other continental tide stations, the astronomical tide remains above mean sea level (MSL) more than half the time, but departs farther from MSL in a negative rather than in a positive direction. At Honolulu, Hawaii, the predicted tide is below the MSL more than half the time and positive departures are larger than negative departures. A technical glossary and supplementary tables are included.en_US
dc.publisherCoastal Engineering Research Center (U.S.)en_US
dc.relation.ispartofseriesSpecial report;no. 7-
dc.rightsApproved for public release; distribution is unlimited.-
dc.sourceThis Digital Resource was created from scans of the Print Resource.-
dc.subjectTides--United Statesen_US
dc.titleTides and tidal datums in the United Statesen_US
Appears in Collections:Special Report

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