UFF File Format

Scream can save files in UFF format (Universal File Format). See Recording Options. The files are in dataset 58 structure (Function at Nodal DOF).

Files are recorded using the parameters specified in the recording options, including fragmentation and directory. Filenames are created using the same date-coding system as ‘.gcf’ files, but use a different extension. Two type of UFF format are supported: Ascii and Binary. The extension ".ufa" denotes the ASCII variant, and ".ufb" denotes the binary variant.

If a discontinuity is detected in the incoming data stream, then the currently recording file will be closed, and a new file opened with a filename timestamp matching the start of the new file. Note that this operation overrides the fragmentation (size or duration) specified in the setup.

Normal Filestamping will resume on the next fragmentation time/size interval. E.g. If 1 hour files are specified, then a new file will be opened on the hour, every hour, whether or not a discontinuity during the previous hour caused a new file to be opened.

The byte order used for the binary variant is specified in Recording Options. ASCII does not have byte-ordering options.

Details for the layout of the UFF format can be obtained from The University of Cincinnati (http://sdrl.rhod.uc.edu/UFF2/).

See Also: Recording, GCF format, SAC format, MiniSEED format, P-SEGy format, SUDs format, GSE format, CSS format.