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Techniques and Methods 12-B1

SLAMMER—Seismic LAndslide Movement Modeled using Earthquake Records

By Randall W. Jibson, Ellen M. Rathje, Matthew W. Jibson, and Yong W. Lee


This program is designed to facilitate conducting sliding-block analysis (also called permanent-deformation analysis) of slopes in order to estimate slope behavior during earthquakes. The program allows selection from among more than 2,100 strong-motion records from 28 earthquakes and allows users to add their own records to the collection. Any number of earthquake records can be selected using a search interface that selects records based on desired properties. Sliding-block analyses, using any combination of rigid-block (Newmark), decoupled, and fully coupled methods, are then conducted on the selected group of records, and results are compiled in both graphical and tabular form. Simplified methods for conducting each type of analysis are also included.

First posted April 16, 2013

Revised November 12, 2014

For additional information contact:
Director, Geologic Hazards Science Center
U.S. Geological Survey
Box 25046, MS-966
Denver Federal Center
Denver, CO 80225-0046


Suggested citation:

Jibson, R.W., Rathje, E.M., Jibson, M.W., and Lee, Y.W., 2013, SLAMMER—Seismic LAndslide Movement Modeled using Earthquake Records (ver.1.1, November 2014): U.S. Geological Survey Techniques and Methods, book 12, chap. B1, unpaged.

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