- Author
-
Idriss, I. M.
- Title
- Procedures for Selecting Earthquake Ground Motions at Rock Sites.
- Coporate
- California Univ., Davis
- Sponsor
- National Institute of Standards and Technology, Gaithersburg, MD
- Report
-
NIST GCR 93-625
April 1993
35 p.
- Distribution
- Available from National Technical Information Service
- Contract
- 50-SBNB-0C6271
- Keywords
-
earthquakes
|
acceleration response spectrum
|
attenuation relationships
|
earthquake ground motions
- Abstract
- To estimate the spectral ordinates at a rock site for an earthquake having a given size (magnitude) and occurring at a specified distance from the site, available attenuation relationships are used. These relationships, which have been developed based on available recorded data and typically are for a spectral damping of 5%, provide estimates of the median spectral ordinates and a measure of the dispersion about the median. Four currently available relationships are summarized in this report. These relationships are those derived by Campbell (1990), Geomatrix (1991), Idriss (1991) and Joyner and Boore (1988). The equations to be used in conjunction with each relationship together with the description and the numerical values of the coefficients pertinent to that relationship are given.