Three-dimensional finite-difference modeling of non-linear ground notion

Thumbnail image of item number 1 in: 'Three-dimensional finite-difference modeling of non-linear ground notion'.
Thumbnail image of item number 2 in: 'Three-dimensional finite-difference modeling of non-linear ground notion'.
Thumbnail image of item number 3 in: 'Three-dimensional finite-difference modeling of non-linear ground notion'.
Thumbnail image of item number 4 in: 'Three-dimensional finite-difference modeling of non-linear ground notion'.
Showing 1-4 of 10 pages in this article.

PDF Version Also Available for Download.

Description

We present a hybrid finite-difference technique capable of modeling non-linear soil amplification from the 3-D finite-fault radiation pattern for earthquakes in arbitrary earth models. The method is applied to model non-linear effects in the soils of the San Fernando Valley (SFV) from the 17 January 1994 M 6.7 Northridge earthquake. 0-7 Hz particle velocities are computed for an area of 17 km by 19 km immediately above the causative fault and 5 km below the surface where peak strike-parallel, strike-perpendicular, vertical, and total velocities reach values of 71 cm/s, 145 cm/s, 152 cm/s, and 180 cm/s, respectively. Selected Green`s functions ... continued below

Physical Description

10 p.

Creation Information

Jones, E.M. & Olsen, K.B. August 1, 1997.

Context

This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

Who

People and organizations associated with either the creation of this article or its content.

Authors

  • Jones, E.M. Los Alamos National Lab., NM (United States)
  • Olsen, K.B. California Univ., Santa Barbara, CA (United States). Inst. for Crustal Studies

Sponsor

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

About | Browse this Partner

Contact Us

Corrections Questions

What

Descriptive information to help identify this article. Follow the links below to find similar items on the Digital Library.

Description

We present a hybrid finite-difference technique capable of modeling non-linear soil amplification from the 3-D finite-fault radiation pattern for earthquakes in arbitrary earth models. The method is applied to model non-linear effects in the soils of the San Fernando Valley (SFV) from the 17 January 1994 M 6.7 Northridge earthquake. 0-7 Hz particle velocities are computed for an area of 17 km by 19 km immediately above the causative fault and 5 km below the surface where peak strike-parallel, strike-perpendicular, vertical, and total velocities reach values of 71 cm/s, 145 cm/s, 152 cm/s, and 180 cm/s, respectively. Selected Green`s functions and a soil model for the SFV are used to compute the approximate stress level during the earthquake, and comparison to the values for near-surface alluvium at the U.S. Nevada Test Site suggests that the non-linear regime may have been entered. We use selected values from the simulated particle velocity distribution at 5 km depth to compute the non-linear response in a soil column below a site within the Van Norman Complex in SFV, where the strongest ground motion was recorded. Since site-specific non- linear material parameters from the SFV are currently unavailable, values are taken from analyses of observed Test Site ground motions. Preliminary results show significant reduction of spectral velocities at the surface normalized to the peak source velocity due to non-linear effects when the peak velocity increases from 32 cm/s (approximately linear case) to 64 cm/s (30-92%), 93 cm/s (7-83%), and 124 cm/s (2-70%). The largest reduction occurs for frequencies above 1 Hz.

Physical Description

10 p.

Notes

OSTI as DE97008888

Source

  • Northridge earthquake research conference, Los Angeles, CA (United States), 22-29 Aug 1997

Language

Item Type

Identifier

Unique identifying numbers for this article in the Digital Library or other systems.

  • Other: DE97008888
  • Report No.: LA-UR--97-2408
  • Report No.: CONF-970896--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 629291
  • Archival Resource Key: ark:/67531/metadc698177

Collections

This article is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

About | Browse this Collection

What responsibilities do I have when using this article?

Digital Files

When

Dates and time periods associated with this article.

Creation Date

  • August 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

Description Last Updated

  • May 5, 2016, 7:25 p.m.

Usage Statistics

When was this article last used?

Yesterday: 0
Past 30 days: 2
Total Uses: 5
More Statistics

Interact With This Article

Here are some suggestions for what to do next.

Start Reading

Thumbnail image of item number 1 in: 'Three-dimensional finite-difference modeling of non-linear ground notion'.
Thumbnail image of item number 2 in: 'Three-dimensional finite-difference modeling of non-linear ground notion'.
Thumbnail image of item number 3 in: 'Three-dimensional finite-difference modeling of non-linear ground notion'.
Thumbnail image of item number 4 in: 'Three-dimensional finite-difference modeling of non-linear ground notion'.

PDF Version Also Available for Download.

Citations, Rights, Re-Use

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Jones, E.M. & Olsen, K.B. Three-dimensional finite-difference modeling of non-linear ground notion, article, August 1, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc698177/: accessed December 10, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.