Water Resources Applications Software
Summary of MEPDATA
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
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
The URL for this page is: http://water.usgs.gov/cgi-bin/man_wrdapp?mepdata
Send questions or comments to h2osoft@usgs.gov