mepdata(1)       U.S. Geological Survey (wrdapp)       mepdata(1)


NAME
       mepdata - Data entry for total sediment discharge by the modified
                 Einstein procedure program (MODEIN)

ABSTRACT
       MEPDATA allows for keyboard entry and modification of measured
       suspended-sediment discharge data and storage into a direct-access
       file for input to the MODEIN.

METHOD
       MEPDATA allows the user to create, add to, modify, or list a direct-
       access file that is read by MODEIN.

HISTORY
       Version 1.3 1998/01/16 - Original program as ported and code clean-
          up for use on UNIX workstations.

DATA REQUIREMENTS
       Data are input interactively in a conversational fashion. The
       following data are prompted for by MEPDATA to form the MODEIN data
       set:
               measurement location
               date of measurement
               time of measurement
               water discharge
               top width of cross section
               mean depth in cross section
               water temperature
               minimum percentage of both suspended sediment and bed
                  material
               particle size at which 35 and 65 percent of the bed material
                  by weight is finer
               concentration of measured suspended sediment
               average depth at the sampling verticals
               distance between the bottom of the sampled zone and
                  streambed
               Z values
               percent by weight of measured suspended sediment
               percent by weight of bed material

SYSTEM REQUIREMENTS
       MEPDATA is written in Fortran 77.  Generally, the program is easily
       installed on most computer systems.  The code has been used on UNIX-
       based computers and DOS-based 386 or greater computers having a math
       coprocessor and 1 mb of memory.

DOCUMENTATION
       Stevens, H.H., 1985, Computer program for the computation of total
          sediment discharge by the modified Einstein procedure: U.S.
          Geological Survey Water-Resources Investigations Report 85-4047,
          77 p.

REFERENCES
       Folk, R.L., 1968, Petrology of Sedimentary Rocks:  Austin, Hemphill



                            7 Jul 1998                          1





mepdata(1)       U.S. Geological Survey (wrdapp)       mepdata(1)


          Publishing Co., p. 44-50.

       Inman, D.L., 1952, Measures for describing the size distribution of
          sediments:  Journal of Sedimentary Petrology, v. 22, no. 3, p.
          125-245.

       Krumbein, W.C., 1936, Application of logarithmic moments to size
          frequency distribution of sediments:  Journal of Sedimentary
          Petrology, v. 6, no. 1, p. 35-47.

       Trask, P.D., 1932, Origin and environment of source sediments of
          petroleum: Houston, Gulf Publishing Co., 323 p.

CONTACTS
       Operation and Distribution:
          U.S. Geological Survey
          Hydrologic Analysis Software Support Program
          437 National Center
          Reston, VA 20192

          h2osoft@usgs.gov

       Official versions of U.S. Geological Survey water-resources analysis
       software are available for electronic retrieval via the World Wide
       Web (WWW) at:

                  http://water.usgs.gov/software/

       and via anonymous File Transfer Protocol (FTP) from:

                  water.usgs.gov (path: /pub/software).

       The WWW page and anonymous FTP directory from which the MODEIN
       software can be retrieved are, respectively:

                  http://water.usgs.gov/software/modein.html
                                --and--
                  /pub/software/surface_water/modein

SEE ALSO
       modein(1) - Total sediment discharge program using modified
                   Einstein procedure
       sedsize(1) - Particle-size statistics of fluvial sediments
       sizedata(1) - Data entry program for sedsize













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