The NSF Earthquake Disaster Mitigation Research Program

1998 ◽  
Vol 14 (3) ◽  
pp. 433-440 ◽  
Author(s):  
S. C. Liu ◽  
W. Anderson ◽  
C. Astill ◽  
L. Weber
Keyword(s):  
Earthquake Engineering ◽  
Research Program ◽  
High Performance ◽  
Earthquake Hazard ◽  
Disaster Mitigation ◽  
Earthquake Simulation ◽  
Cooperative Research ◽  
Earthquake Disaster ◽  
Engineering Research ◽  
The U.S

This paper presents several major developments and research initiatives of NSF's program in earthquake hazard mitigation. These activities include (1) establishment of three new earthquake engineering research centers in the U.S., (2) initiation of a major five-year cooperative research program on urban earthquake disaster mitigation between the U.S. and Japan, (3) initiation of two joint center-to-center projects between the U.S. and Japan, and (4) planning for a high-performance earthquake simulation facility network in the U.S. These activities highlight the ever-increasing importance of research innovations for earthquake disaster mitigation and the continuing challenges for cooperation between the U.S. and Japan.

ENHANCEMENT OF INTEGRATED EARTHQUAKE SIMULATION WITH HIGH-PERFORMANCE COMPUTING

2011 ◽  
Vol 05 (03) ◽  
pp. 271-282 ◽  
Author(s):  
M. HORI ◽  
G. SOBHANINEJAD ◽  
T. ICHIMURA ◽  
M. LALITH
Keyword(s):  
High Performance Computing ◽  
Urban Areas ◽  
Numerical Experiments ◽  
High Performance ◽  
Earthquake Hazard ◽  
Hazard Map ◽  
Earthquake Simulation ◽  
Earthquake Damages ◽  
Performance Computing ◽  
Integrated Earthquake Simulation

Integrated earthquake simulation (IES) is a system to estimate possible earthquake hazard and disaster which can take place in an urban area by means of seamless numerical computation. High-performance computing (HPC) is enhanced so that IES is able to simulate a larger area in a shorter time, by improving the system architecture and adding new elements which smoothens the system's efficiency. It is shown in numerical experiments (which are carried out for actual urban areas) that the performance of IES enhanced with HPC is satisfactory. A new system is developed to generate a hazard map which depicts earthquake damages in higher spatial resolution by taking advantage of IES enhanced with HPC. It is shown that such maps can be generated for Tokyo metropolis in half a day.

NGA-West2 Research Project

2014 ◽  
Vol 30 (3) ◽  
pp. 973-987 ◽  
Author(s):  
Yousef Bozorgnia ◽  
Norman A. Abrahamson ◽  
Linda Al Atik ◽  
Timothy D. Ancheta ◽  
Gail M. Atkinson ◽  
...  
Keyword(s):  
Ground Motion ◽  
Earthquake Engineering ◽  
Research Program ◽  
Epistemic Uncertainty ◽  
Response Spectra ◽  
Site Amplification ◽  
Earthquake Hazards ◽  
Research Project ◽  
Engineering Research ◽  
Crustal Earthquakes

The NGA-West2 project is a large multidisciplinary, multi-year research program on the Next Generation Attenuation (NGA) models for shallow crustal earthquakes in active tectonic regions. The research project has been coordinated by the Pacific Earthquake Engineering Research Center (PEER), with extensive technical interactions among many individuals and organizations. NGA-West2 addresses several key issues in ground-motion seismic hazard, including updating the NGA database for a magnitude range of 3.0–7.9; updating NGA ground-motion prediction equations (GMPEs) for the “average” horizontal component; scaling response spectra for damping values other than 5%; quantifying the effects of directivity and directionality for horizontal ground motion; resolving discrepancies between the NGA and the National Earthquake Hazards Reduction Program (NEHRP) site amplification factors; analysis of epistemic uncertainty for NGA GMPEs; and developing GMPEs for vertical ground motion. This paper presents an overview of the NGA-West2 research program and its subprojects.

Earthquake Disaster Mitigation and Earthquake Engineering in Japan – A Review with a Special Emphasis on the Kobe Earthquake and its Impact

2006 ◽  
Vol 1 (1) ◽  
pp. 11-24
Author(s):  
Tsuneo Katayama ◽  
Keyword(s):  
Earthquake Engineering ◽  
Disaster Mitigation ◽  
Scientific Review ◽  
Earthquake Disaster ◽  
Kobe Earthquake ◽  
Before And After

This is a review of the changes in earthquake disaster mitigation and earthquake engineering in Japan after the 1964 Niigata earthquake, with a special emphasis on the 1995 Kobe earthquake and its impact in particular. This paper is unique in that it has no equations and also in that it shows the light and dark aspects of Japanese earthquake engineering both before and after the Kobe earthquake. Since this article is prosaic, personal, and often emotional, it may be difficult to call it a scientific review. I have tried to ask myself what I overlooked before the Kobe earthquake. Although I do not think that I was able to touch upon all matters considered important, I have summarized some of the changes and advances that have taken place close to me. Some of the points in this review have been discussed elsewhere [1], but the entire paper has been rewritten in a different framework.

An Overview of the NGA Project

2008 ◽  
Vol 24 (1) ◽  
pp. 3-21 ◽  
Author(s):  
Maurice Power ◽  
Brian Chiou ◽  
Norman Abrahamson ◽  
Yousef Bozorgnia ◽  
Thomas Shantz ◽  
...  
Keyword(s):  
Ground Motion ◽  
Earthquake Engineering ◽  
Research Program ◽  
Development Process ◽  
Strong Motion ◽  
Engineering Research ◽  
Motion Models ◽  
Ground Motion Attenuation ◽  
Attenuation Models ◽  
Ground Motion Models

The “Next Generation of Ground-Motion Attenuation Models” (NGA) project is a multidisciplinary research program coordinated by the Lifelines Program of the Pacific Earthquake Engineering Research Center (PEER), in partnership with the U.S. Geological Survey and the Southern California Earthquake Center. The objective of the project is to develop new ground-motion prediction relations through a comprehensive and highly interactive research program. Five sets of ground-motion models were developed by teams working independently but interacting with one another throughout the development process. The development of ground-motion models was supported by other project components, which included (1) developing an updated and expanded PEER database of recorded ground motions, including supporting information on the strong-motion record processing, earthquake sources, travel path, and recording station site conditions; (2) conducting supporting research projects to provide guidance on the selected functional forms of the ground-motion models; and (3) conducting a program of interactions throughout the development process to provide input and reviews from both the scientific research and engineering user communities. An overview of the NGA project components, process, and products is presented in this paper.

A Database of Digitized and Analog Seismograms of Historical Earthquakes in Japan

2020 ◽  
Vol 91 (3) ◽  
pp. 1459-1468
Author(s):  
Satoko Murotani ◽  
Kenji Satake ◽  
Hiroshi Tsuruoka ◽  
Hiroe Miyake ◽  
Toshiaki Sato ◽  
...  
Keyword(s):  
Earthquake Engineering ◽  
High Performance ◽  
Velocity Structure ◽  
Seismic Velocity ◽  
Current Knowledge ◽  
Historical Earthquakes ◽  
Disaster Mitigation ◽  
Waveform Analysis ◽  
Historical Records ◽  
Earthquake Research

Abstract Seismic and tsunami instrumental observations by seismographs and tide gauges began in Japan in 1875; hence, many analog records of earthquakes and tsunamis are stored at various universities and institutions throughout the country. Re-examination of historical records using modern waveform analysis methods, high-performance computing, and current knowledge on seismic velocity structure is expected to produce new results and interpretations of the mechanism of large earthquakes and tsunamis, leading to improved seismic disaster mitigation practices. However, such work requires extensive effort and skills for the digitization of the analog waveforms recorded on papers. To conveniently use the analog seismograms, we currently construct a database of digitized historical records and seismogram image copies of major earthquakes that occurred in Japan (e.g., the 1923 Kanto, 1944 Tonankai, and 1946 Nankai earthquakes). The data can be searched in this database by event, station, and seismograph names. Users can obtain the instrumental response and station information, if available, in addition to the digitized data. We plan to open this database to the public in a few years via the National Museum of Nature and Science and the Earthquake Research Institute of the University of Tokyo. The database on the museum website will be fundamental for outreach activity of seismology for the general public, and the information contained in the database will be useful in various fields such as seismology or earthquake engineering.

Site Response Studies for Purpose of Revising NEHRP Seismic Provisions

1996 ◽  
Vol 12 (3) ◽  
pp. 407-439 ◽  
Author(s):  
C. B. Crouse ◽  
J. W. McGuire
Keyword(s):  
Earthquake Engineering ◽  
Site Response ◽  
Soft Soil ◽  
Strong Motion ◽  
Earthquake Hazard ◽  
Ground Acceleration ◽  
Amplification Factors ◽  
Soil Class ◽  
Engineering Research ◽  
Stiff Soil

A strong motion database was compiled for California earthquakes of surfacewave magnitudes, Ms ≥ 6, occurring from 1933 through 1992. The database consisted of horizontal peak ground acceleration and 5 percent damped response spectra of accelerograms recorded on four different local geologies: rock (class A), soft rock or stiff soil (class B), medium stiff soil (class C), and soft soil (class D). The results of analyses of the database within each of these site classes were used to derive a set of site-dependent spectral amplification factors for oscillator periods between 0.1 and 4.0 sec and ground acceleration levels between 0.1 and 0.4 g. The amplification factors at 0.3 and 1.0 sec periods (designated as Fa and Fv, respectively) are generally within 20 percent of those recommended during the 1992 Site Response Workshop conducted by the National Center for Earthquake Engineering Research (NCEER). The Fa and Fv values recommended from our study and those from the NCEER workshop are intended for use by code committees making future revisions to the National Earthquake Hazard Reduction Program (NEHRP) seismic provisions and the Uniform Building Code.

Sign in / Sign up

Export Citation Format

Share Document