Program Output

The STORM.DAT file should be created by the user of LTFATE to describe

a particular storm event or a storm event of assumed shape and duration. An

example of hypothetical event use in disposal analysis is given in Scheffner and

Tallent (1994).

Program Output

As stated above, the LTFATE program can simulate movement of dredged

material mounds both over the long-term and for storms. The final output of the

model is a file containing the new mound bathymetry. The bathymetry files can

be viewed either as plan view contour plots or cross sections. Figure F1 shows

the initial bathymetry of a small sand mound placed in shallow water (17 ft) off

Mobile, AL. Figure F2 shows the bathymetry of the same mound approximately

6 months later. Figure F3 shows the change in cross section of the mound along

a line 1,500 ft below the centerline of the mound.

Availability of Models

All WES computer models referred to in this report are available as a part of

the Automated Dredging and Disposal Alternatives Modeling System

(ADDAMS) and can be downloaded from the World Wide Web from the WES

Dredging Operations Technical Support (DOTS) homepage at http://www.wes.

army.mil/el/dots/dots.html.

Additional Information

For additional information on the LFTATE program, contact Dr. Norman

Scheffner (601) 634-3220 of the Research Division of the Coastal and

Hydraulics Laboratory at the U.S. Army Engineer Waterways Experiment

Station.

References

Ackers, P., and White, R. W. (1973). "Sediment transport: New approach and

analysis," Journal of the Hydraulics Division 99 (HY11), 2041-60.

Allen, J. R. L. (1970). "The avalanching of granular solids on dune and similar

slopes," Journal of Geology 78 (3), 326-51.

Ariathurai, R., and Krone, R. B. (1976). "Finite element model for cohesive

sediment transport," J. Hydraul. Div. Am. Soc. Civ. Eng. 102(HY3), 323-338.

F10

Appendix F LTFATE Model