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USGS CMG "Scattered/Swath Format" Definition

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This provides Infobank's scattered or swath definition Swath

  • "Scattered" information (as used here) is data at a single location.
  • "Swath" information (as used here) is composed of multiple, simultaneous observations relative to a single location.
  • Scattered information may come from a variety of sources: single observations, observations along tracklines, extractions for gridded data sets, etc.
  • The location is commonly a latitude, longitude pair.
  • UTM x/y coordinates are sometimes used.
  • The information at the location may be one or many values.
  • Commonly a "time stamp" (the time the observation was made) is one of the values.
  • Scattered information occurs in the InfoBank as:
    • time series -- <Activity_ID>.### files containing time sequential information.
    • swath -- files containing swath bathymetric information.

  • InfoBank navigation file names:
    • <Activity_ID>.0## -- Navigation information
    • <Activity_ID>.1## -- Gravity information
    • <Activity_ID>.2## -- Magnetics information
    • <Activity_ID>.3## -- Bathymetry information
    • <Activity_ID>.4## -- Seismic information
    • <Activity_ID>.6## -- Range Navigation information
    • fullres.dat -- Swath bathymetry information

  • A "time" key is associated with each record for correlation with other scattered information data sets.

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Page Last Modified: Mon Nov 4 03:37:33 PST 2013  (chd)