New trends in active faulting studies for seismic hazard assessment
No abstract available.
Annali di Geofisica↗
Geology topics
Robin K. McGuire
Publications and source records attributed to Robin K. McGuire.
Four definitions of strong motion duration: Their predictability and utility for seismic hazard analysis
No abstract available.
Open-File Report↗
FRISK: computer program for seismic risk analysis using faults as earthquake sources
This computer program makes probabilistic seismic hazard calculations at sites affected by earthquakes occurring on faults which are defined by the user as a series of line segments. The length of rupture of the fault as a function of earthquake magnitude is accounted for, and ground motion estimates at the site are made using the magnitude of the earthquake and the closest distance from the site to the rupture zone. Uncertainty in the earthquake magnitude, in the rupture given magnitude, in the location of the rupture zone on the fault, in the maximum possible magnitude of earthquakes, and in the ground motion at the site given the earthquake, its size, rupture length, and location, are accounted for explicitly. FRISK (Fault RISK) was written to take advantage of repeated calculations, so that seismic hazard analyses for several ground motion parameters (for instance, peak ground acceleration, velocity, and displacement), and for several sites, are most efficiently made with one execution of the program rather than with repeated executions. The program uses a step-truncated exponential distribution for earthquake magnitude, a lognormal distribution for rupture length given magnitude, a uniform distribution for rupture location on faults, and a lognormal distribution of site amplitude given magnitude of the earthquake and distance from the rupture zone to the site. The program has been structured so that other functions may easily be substituted if this is appropriate for a particular problem; for example a wide range of deterministic or probabilistic geophysical models for estimating ground motion may be incorporated, and the program will yield probabilistic estimates of seismic hazard.
Open-File Report↗
Magnitude, distance, and intensity data for C.I.T. strong motion records
The site Modified Mercalli intensities and epicentral distances of strong motion records published by the California Institute of Technology are reported, as well as the magnitude, focal depth, and maximum Modified Mercalli intensity of the event associated with each record. These data were obtained from original sources. The use of the data to derive ground motion relations for design is discussed; possible biases in the data which might affect such relations are described.
Journal of Research of the U.S. Geological Survey↗
FORTRAN computer program for seismic risk analysis
A program for seismic risk analysis is described which combines generality of application, efficiency and accuracy of operation, and the advantage of small storage requirements. The theoretical basis for the program is first reviewed, and the computational algorithms used to apply this theory are described. The information required for running the program is listed. Published attenuation functions describing the variation with earthquake magnitude and distance of expected values for various ground motion parameters are summarized for reference by the program user. Finally, suggestions for use of the program are made, an example problem is described (along with example problem input and output) and the program is listed.
Open-File Report↗