Science / Tides and Currents / International Great Lakes Datum: Mean water level at Rimouski/Pointe-au-Pere, Quebec, on the Gulf of St. Lawrence over the period 1970 through 1988, from which geopotential elevations (geopotential differences) throughout the Great Lakes region are measured. The term is often used to mean the entire system of geopotential elevations rather than just the referenced water level. See low water datum (1).
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International Adjective Synonyms: supranational, global, worldwide, universal, intercontinental, cosmopolitan, ecumenic(al) or oecumenic(al), foreign
Science / Tides and Currents / North American Vertical Datum: A fixed reference for elevations determined by geodetic leveling. The datum was derived from a general adjustment of the first-order terrestrial leveling nets of the United States, Canada, and Mexico. MORE
Business / Finance / International Monetary Market (IMM): A division of the CME established in 1972 for trading financial futures. Related: Chicago Mercantile Exchange (CME) MORE