XA04NO348 NUREG/CR-1660 UCRL-B227 INIS-XA-N--049 Compilation, Assessment and Expansion of the Strong Earthquake Ground Motion Data Base Seismic Safety Margins Research Program (SSMRP) C. B. Crouse, J. A. Hilernan, B. E. Turner, G. R. Martin Fugro, Inc. Prepared for U.S. Nuclear Regulatory Commission LAVMENCE LIVERMORE LABORATORY NOTICE This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, or any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for any third party's Ue, or the results of such use, of any information, apparatus product or process disclosed in this report, or represents that its use by uch third par.ty would not infringe privately owned rights. Available from GPO Sales Program Division of Technical nformation and Document Control U. S. Nuclear Regulatory Commission Washington, D. C. 20555 and National Technical nformation Service Springfield, Virginia 22161 NUREG/CR 1660 UCRL 15227 R6, RA, RD, RJ, RM Compilation, Assessment and Expansion of the Strong Earthquake Ground Motion Data Base Seismic Safety Margins Research Program (SSMRP) Manuscript Completed: April 1980 Date Published: September 1980 Prepared by C. B. Crouse, J. A Hileman, B. E. Turner, G. R. Martin Fugro, Inc. Lawrence Livermore Laboratory 7000 East Avenue Livermore, CA 94550 Prepared for Office of Nuclear Regulatory Research U.S. Nuclear Regulatory Commission Washington, D.C. 20555 NRC FIN No. A0139 ABSTRACT A catalog has been prepared which contains information for: (1) world-wide, ground-motion accelerograms 2 the accelero- graph sites where these records were obtained, and 3 the seismological parameters of the causative earthquakes. The catalog is limited to data for those accelerograms which have been digitized and published. In addition, the quality and completeness of these data are assessed. This catalog is unique because it is the only publication which contains comprehensive information on the recording conditions of all known digitized accelerograms. However, information for many accelerograms is missing. Although some literature may have been overlooked, most of the missing data has not been published. Nevertheless, the catalog provides a convenient reference and useful tool for earthquake engineering research and applications. SUMMARY AND CONCLUSIONS Fugro, Inc., under contract to Lawrence Livermore Laboratory, has compiled information for nearly 1,000 digitized accelero- grams from 16 countries. This information was cataloged and stored on magnetic tape. The catalog consists of computer printout listings of three data tables (Digitized Accelerogram, Recording Station, and Earthquake) for each country. All information appearing in the catalog has been referenced. Listings of the digitized accelerograms themselves have been omitted from the catalog; however, the sources where these data can be obtained has been identified. The country with the largest number of accelerograms documented in this catalog is Japan 336), closely followed by the United States 329) and Italy 170). The number of records from other countries is small by comparison. Approximately one- third of the U.S. accelerograms were recorded during the 1971 San Fernando earthquake, and nearly all of the Italian accelero- grams came from the 1976 Friuli earthquake and aftershock sequence. Nearly all of the western hemisphere accelerograms have been completely processed with routine computer programs developed by Trifunac and Lee 1973) or updated versions of these programs developed by Basili and Brady 1978). Generally, accelerograms outside the western hemisphere have not been corrected for baseline drift errors and the instrument response, although efforts are now underway in many countries to make these corrections. Vi The completeness of information pertaining to the character- istics of any particular accelerogram and its recording con- ditions varies considerably. Generally, the countries with the most complete information are Japan, the U.S., and Italy, although information for the earlier accelerograms from these countries is usually not as complete as for the more recent ones. most of the missing information has not been published, although some of it almost certainly exists. For some data classes, such as earthquake source parameters, much of the desired information has never been determined. The reliability and uncertainty of the reported data is highly variable and difficult to assess generically. These issues must be addressed on case-by-case basis from the information provided in the catalog. v TABLE OF CONTENTS Page LIST OF TABLES ix LIST OF FIGURES ix ACKNOWLEDGMENTS . xi 1. INTRODUCTION . 1 2. WORLD-WIDE ACCELEROGRAM DATA . 5 2.1 Argentina . 6 2.2 Chile . 8 2.3 China . 9 2.4 El Salvador . 11 2.5 Greece . 12 2.6 Italy . 14 2.7 Japan . 17 2.8 Mexico . 22 2.9 New Guinea . 24 2.10 New Zealand . 26 2.11 Nicaragua . 27 2.12 Peru . 28 2.13 Romania . 30 2.14 United States . 31 2.15 U.S.S.R . 36 2.16 Yugoslavia . 37 3. QUALITY OF STRONG-MOTION DATA . 39 3.1 Introduction . 39 3.2 Completeness of Strong-Motion Data Base, . 39 vi i i TABLE OF CONTENTS (Cont.) Page 3.3 Uncertainties in Some Relevant Parameters . 40 3.4 Quality of the Seismological Data . 41 3.5 Digitization and Processing Errors . 47 4. REFERENCES CITED IN REPORT . 52 APPENDICES A. STRONG-MOTION DATA CATALOG . 56 A.1 Introduction . 56 A.2 Description of Catalog and Users Guide . 56 A.3 Abbreviations Used in Catalog . 61 A.4 References Used in CatalSla . 72 B. CHARACTERISTICS OF STRONG-MOTION ACCELEROGRAPHS. 121 ix LIST OF TABLES Table No. Title B-1 Instrument Characteristics LIST OF FIGURES Figure No. Title 3-1 Comparison of accelerogram corrected by CIT and USC. 3-2 Response spectra of accelerogram corrected by CIT and USC. 3-3 Comparison of digitization noise for Japanese and U.S. accelerograms 3-4 Uncorrected and corrected accelerogram processed by Japan's SEMOC 3-5 Response spectra of uncorrected and corrected Hoshina-A (EW) accelerogram processed by Japan's SEMOC 3-6 Hoshina-A (EW) accelerogram corrected using USGS SEB computer program with decimation to At = 002 sec. 3-7 Response spectra of Hosina-A (EW) accelerogram corrected with SEMOC and USGS SEB procedures. 3-8 Hoshina-A (EW) accelerogram corrected using USGS SEB computer program with decimation to At = 0.01 sec. 3-9 Response spectra of Hosina-A (EW) accelerogram corrected with SEMOC and USGS SEB procedures. -X ACKNOWLEDGMENTS This project was performed for Lawrence Livermore Laboratory (LLL) under LLL subcontact 3900109. The technical coordinator for LLL was Don Bernreuter. The following Fugro personnel participated in the project: Geoffrey Martin - Project Manager C. B. Crouse - Co-Principal Investigator Jim Hileman - Co-Principal Investigator Barbara Turner - Analyst Seiji Uehara - Engineering Assistant Richard Miller - Engineering Assistant Don Chambers - Engineering Assistant Lynn Williams - Engineering Assistant. Seiji Uehara has been working for Fugro during a leave-of- absence from his Japanese employer, Sumitomo Construction Co., Ltd. Mr. Uehara was extremely helpful in compiling the Japanese accelerogram data. Significant contributions to the project were made by a num- ber of people outside Fugro. We are particularly indebted to Drs. Gerald Brady and Fritz Matthiesen of the U.S. Geological Survey, who supplied a considerable amount of information on the world-wide strong-motion data base. Others who contributed significantly were: -Xii ACKNOWLEDGMENTS (Cont.) Professors Don Hudson, - California Institute of Hiroo Kanamori, and Technology Paul Jennings Professor M. D. Trifunac - University of Southern California Dr. Iwao Morimoto - Kisojiban Consultants Co., Ltd., Japan Dr. Jim Beck - DSIR, New Zealand Dr. Nove Naumoski - IEEES, Yugoslavia Professor N. N. Ambraseys - Imperial College of Science and Technology, London Dr. Francesco Muzzi - CNEN-DISP, Italy 1. INTRODUCTION The purpose of this project was to compile, expand, and assess the quality of the strong earthquake ground-motion data base. The project was performed for Lawrence Livermore Laboratory (LLL) of the University of California under their subcontract 3900109. The work is part of LLL's Seismic Safety Kargin Research Program (SSMRP) which is being conducted for the U.S. Nuclear Regulatory Commission. Because of the extremely large number of accelerograms that have been recorded throughout the world, the scope of our work was confined to only those ground-motion accelerograms which have been digitized and published. Furthermore, accelerograms were not included from the crest or face of dams or from above ground-level locations in buildings or other structures. Even with these constraints, a total of 987 accelerograms from 16 countries were documented. Information for each accelerogram has been entered in a catalog and on magnetic tape. Well over 500 references and a number of leading authorities in the earthquake engineering field from all over the world were consulted for this project. With regard to the collection of the accelerogram data, as much information as possible was gathered for each accelerogram and placed into the following three data tables: (1) Digitized Accelerogram 2 Recording Station, and 3 Earthquake. The kinds of information appearing in each of these tables is listed below; 2 (1) Digitized Accelerogram Date and time of earthquake Location and I.D. number of recording station Source,