USGS OFR 2011-1005: Surficial Geology of the Sea Floor in Central Rhode Island Sound Southeast of Point Judith, Rhode Island, Conversion Factors

U.S. Geological Survey Open-File Report 2011–1005

Surficial Geology of the Sea Floor in Central Rhode Island Sound Southeast of Point Judith, Rhode Island

Conversion Factors

SI to Inch/Pound

Multiply	By	To obtain
Length
centimeter (cm)	0.3937	inch (in.)
millimeter (mm)	0.03937	inch (in.)
meter (m)	3.281	foot (ft)
meter (m)	1.094	yard (yd)
kilometer (km)	0.6214	mile (mi)
kilometer (km)	0.5400	mile, nautical (nmi)
Area
square kilometer (km²)	0.3861	square mile (mi²)
square meters (m²)	10.7639	square feet (ft²)

Phi-notation (Krumbein, 1934) as used in this report is defined as: Φ = -log 2 (d), where d is the grain diameter in millimeters. Phi-class intervals in millimeters are given in the data dictionary of the Sediments section of this report.

The frequencies of multibeam bathymetry are measured in kilohertz (kHz), one thousand periods per second.

Horizontal coordinate information projected in Universal Transverse Mercator (UTM) Zone 19 is referenced to the North American Datum of 1983 (NAD83); horizontal information in geographic coordinates is referenced to the World Geodetic System 1984 (WGS84). The vertical datum for tidal-zone measurements is mean lower low water (MLLW).

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