USGS OFR 2012-1258: High-Resolution Geophysical Data From the Sea Floor Surrounding the Western Elizabeth Islands, Massachusetts Conversion Factors and Datum

Open-File Report 2012-1258

High-Resolution Swath Interferometric Data Collected within Muskeget Channel, Massachusetts

Conversion Factors and Datum

SI to Inch/Pound

Multiply	By	To obtain
Length
millimeter (mm)	0.03937	inch (in.)
meter (m)	3.281	foot (ft)
kilometer (km)	0.6214	mile (mi)
kilometer (km)	0.5400	mile, nautical (nmi)
meter (m)	1.094	yard (yd)
Velocity
meters per second (m/s)	3.281	foot per second (ft/s)
Area
square kilometers (km²)	0.386102159	square miles (mi²)

Vertical coordinate information is referenced to mean lower low water (MLLW) [the average of the lower low water height of each tidal day observed over the national tidal datum epoch].

Horizontal coordinate information is referenced to the World Geodetic System of 1984 (WGS84) in a Geographic Coordinate System.

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