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in subjects: "Ground Motion"  
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Exceptional Ground Accelerations and Velocities Caused by Earthquakes

Description: This project aims to understand the characteristics of the free-field strong-motion records that have yielded the 100 largest peak accelerations and the 100 largest peak velocities recorded to date. The peak is defined as the maximum magnitude of the acceleration or velocity vector during the strong shaking. This compilation includes 35 records with peak acceleration greater than gravity, and 41 records with peak velocities greater than 100 cm/s. The results represent an estimated 150,000 instr… more
Date: January 17, 2008
Creator: Anderson, John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Initial Borehole Accelerometer Array Observations Near the North Portal of the ESF

Description: This report addresses observed ground motions at the site of the proposed surface facilities associated with the designated repository for high-level nuclear waste at Yucca Mountain, Nevada. In 2003 an accelerometer array was installed at three boreholes on the pad of the north portal of the ESF (Exploratory Studies Facility) at Yucca Mountain, Nevada, by the Nevada Seismological Laboratory (NSL). These boreholes, roughly 150 m apart and initially used for extensive geological and geophysical s… more
Date: August 17, 2005
Creator: von Seggern, David
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Underground measurements of seismic vibrations at the SSC site

Description: The results of underground measurements of seismic vibrations at the tunnel depth of the Superconducting Super Collider (SSC) site are presented. Spectral analysis of the data obtained in the frequency band from 0.05 Hz to 1500 Hz is performed. It is found that amplitudes of ambient ground motion are less than requirements for the Collider, but cultural vibrations are unacceptably large and will cause fast growth of transverse emittance of the SSC beams.
Date: March 17, 1995
Creator: Shiltsev, V.D.; Parkhomchuk, V.V. & Weaver, H.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Seismic studies of the San Francisco-Oakland Bay Bridge

Description: Computational simulation plays a central role in the engineering analysis and design of major bridge structures and accurate simulations are essential for the development of earthquake resistant and economical structural designs. This paper describes new methodologies and computational tools which have recently been developed for simulating earthquake ground motions and the seismic response of cable supported bridges. The simulation tools are described and an example application for an importan… more
Date: August 17, 1999
Creator: Astaneh-Asl, A.; Larsen, S. & McCallen, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Character and origins of ground rupturing and ground deformation during the 28 June 1992 Landers, California earthquake (as well as the 1989 Loma Prieta and 1994 Northridge earthquakes). Final report

Description: The overall objective of the research has been to understand the form and significance of surface rupture produced by earthquakes. Specific objectives are to describe fracturing and other manifestations of broad belts of ground rupture during the Landers earthquake and to mechanically analyze the structures that form along the belts. The author has learned much about ground rupture during earthquakes, even though he has studied only three earthquakes to date: Loma Prieta, Landers and Northridge. more
Date: September 17, 1996
Creator: Johnson, A.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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