NEHRP Clearinghouse
- Title
- SH - A Computer Program for Generating Far-Field Tangential Time Histories for Point Earthquake Sources.
- File
- PB296455.pdf
- Author(s)
- Herrmann, R. B.; Wang, C. Y.
- Source
- National Science Foundation, Washington, DC. Applied Science and Research Applications., January 1979, 116 p.
- Abstract
- A computer program is presented for the computation of far-field tangential time histories due to point earthquake sources. The program provides accurate results for frequencies of 0-10 Hz and for receiver distances from one source depth to 500 kilo-meters. Comparisons are made with an independent half-space solution to test the validity of the far-field assumption in representing time histories. A package of four computer programs is given: SHSPEC yields Fourier spectra on the surface of a multi-layered medium at a specified distance from the point dislocation earthquake source; SHVEL combines the output of SHSPEC with a predetermined source pulse to generate velocity time histories; DSVLAC uses the output of SHVEL to generate displacement, velocity and acceleration time histories; and SDSVSA uses the output of DSVLAC to compute and tabulate the response spectra of each time history.
- Keywords
- Far field; Reaction time; DSVLAC computer program; Seismic waves; SHSPEC computer program; Point sources; Earth movements; Honeywell 6023 computers; Ground motion; Fortran 4 programming language; SHVEL computer program; Computer programs; Fortran; SDSVSA computer program; Earthquakes; Earth models