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Open-File Report 2014-1012

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### Combined Multibeam Bathymetry Data from Rhode Island Sound and Block Island Sound – A Regional Perspective 

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## Conversion Factors

| Title PageList of Figures**Conversion Factors**AbstractIntroductionMethodsBathymetryGIS Data CatalogSummaryAcknowledgmentsReferencesContactsIndex | SI to Inch/Pound 
MultiplyByTo obtainLengthmeter (m)3.281foot (ft) meter (m)1.094yard (yd) kilometer (km)0.6214mile (mi)kilometer (km)0.5400mile, nautical (nmi) Areasquare kilometer (km²)0.3861square mile (mi²)Flow ratecentimeter per second (cm/s)0.03281foot per second (ft/s)
The frequency  of multibeam bathymetry is 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 (NAD 83); horizontal  information in geographic coordinates is referenced to the World Geodetic  System 1984 (WGS 84). The vertical datum for tidal-zone measurements is mean  lower low water (MLLW).
          Abbreviations
          BAG - bathymetry  attributed grid          BASE - bathymetry  adjusted for statistical error          DGPS - differential  global positioning system          DTM - digital  terrain model          FAQ - frequently  asked questions          GIS - geographic  information system          HIPS - Hydrographic  Image Processing System          HTML - Hyperlink  Text Markup Language           kHz - kilohertz           MBES - multibeam  echosounder          MLLW - mean  lower low water           NAD 83 - North  American Datum of 1983          NOAA - National  Oceanic and Atmospheric Administration          USGS - U.S.  Geological Survey          UTM - Universal  Transverse Mercator           WGS 84 - World  Geodetic System of 1984 
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U.S. Department of the Interior |            U.S. Geological Survey                                                URL: http://pubs.usgs.gov/of/2014/1012/html/conversion.html            Page Contact Information: GS Pubs Web Contact                        Page Last Modified: Wednesday, February 19, 2014, 02:37:42 PM