Interpretation of Strong-Motion Earthquake Accelerograms Using a Moving Dislocation Model

reportActive / Technical Report | Accession Number: AD0773323 | Open PDF

Abstract:

Near-field strong-motion accelerograms of the San Fernando earthquake and three of its aftershocks recorded at Pacoima Dam were analyzed using Haskells moving dislocation model. For the main shock, it was found that 1 The effect of stick-slip segmented rupture velocities is not prominent within a moderate range of rupture velocities 2 A hinged fault surface can produce the necessary initial negative polarity of the vertical velocity trace 3 Using Jungles and Fraziers 1973 solution, the Haskell model produces very large amplitudes compared to those observed.

Author(s):
Turnbull, Lawrence S., Jr. ; Battis, James C.
Author Organization(s):
TEXAS INSTRUMENTS INC DALLAS EQUIPMENT GROUP
Descriptive Note:
Semi-annual technical rept. no. 3, 1 May-30 Oct 1973
Supplementary Note:
See also report dated 15 May 1973, AD763819.
Pagination:
0052

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TI-ALEX(02)-TR-73-03, AFOSR-TR-74-0022
Contract/Grant Number(s):
F44620-72-C-0073, ARPA ORDER-2134
Monitor Series:
TR-74-0022, AFOSR
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning; JCA_6_Net Centric; JCA_6.3.3_Spectrum Management; JCA_6.3_Net Management
Communities of Interest:
Air Platforms
Descriptor(s):
*EARTHQUAKES, *SEISMIC DETECTION, *SEISMOLOGICAL STATIONS, CALIFORNIA, DATA PROCESSING, FAULTS(GEOLOGY), MATHEMATICAL MODELS, NUCLEAR EXPLOSIONS, SIGNAL PROCESSING, SIGNAL TO NOISE RATIO, UNDERGROUND EXPLOSIONS
Field(s)/Group(s):
Seismology, Seismic Detection and Detectors
Keyword(s):
Vela uniform, San Fernando earthquake, Pacoima Dam
Report Date:
1973 Nov 15