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NSF jRA-770910 UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY WESTERN HEMISPHERE STRONG-MOTION ACCELEROGRAPH STATION LIST - 1976 OPEN FILE REPORT No. 77-374 This report is preliminary and has not been edited or reviewed for conformity with Geological Survey standards and nomenclature. Prepared on behalf of the National Science Foundation REPRODUCED BY NATIONAL TECHNICAL INFORMATION SERVICE If.S. DEPARTMEMrcOF COMMERCE SPRINGFIEll!. VA 22161- May 1977 EASINFORMA-TION RESOURCES NATIONAL SCIENCE FOUNDATION 50272 -101 REPORT DOCUMENTATION !_I,--REPORT NO. 3. Recipient's Accession No. PAGE NSFjRA-770910 PBS) 1 03806 4. Title and Subtitle 5. Report Date Western Hemisphere Strong-Motion Accelerograph Station List, May 1977 1976 6. 7. Author(s) 8. Performing Organization Rept. No. 77-374 9. Performing Organization Name and Address 10. Project/Task/Work Unit No. Department of the Interior U.S. Geological Survey 11. Contracl(C) or Grant(G) No. Seismic Engineering Branch (C) 345 Middlefield Road Menlo Park, CA 94025 (G) 12. Sponsoring Organization Name and Address 13. Type of Report & Period Covered Engineering and Applied Science (EAS) National Science Foundation Preliminary 1800 G Street, N.W. 14. Washington, D.C. 20550 15. Supplementary Notes I--------------~-------------------------- -- --------------------t ·16. Abstract (Limit: 200 words) This list contains information on strong-motion stations installed in the Western Hemi sphere for which there is some data in the files of the U.S. Geological Survey. It is intended to provide an indication of the status of the networks as of March 1977. The numbering of the stations is based on their regional locations. Stations are arranged by country, north to south, by states in the section for the United States, and then alphabetically by station name. The station name is that which is believed to be the most commonly used name. Prominent facilities, such as dams, pumping plants, and reservoirs, are listed under the name of the facility. Buildings are listed under the city in which they are located and then either under the name of the building or the street address. All names that have been used on past records are cross-referenced to presently used names. The practice of numbering only the instrument station has re placed the former practice of numbering each individual instrument location. Only one number is assigned to a structure such as a building, bridge, or dam although there may be several instruments or many acceleration sensors installed at various locations in and near the structure. The brief site descriptions represent an interpretation of the conditions at each station based on data presently in the stations files. 17. Document Analysis a. Descriptors Earthquakes Ground movements Accelerometers b. Identifiers/Open-Ended Terms Western Hemisphere c. COSATI Field/Group 18. Availability Statement 19. Security Class (This Report) 21. No. of Pages f---------------j--------- NTIS 20. Security Class (This Page) 22. Price (See ANSI-Z39.18) See Instructions on Reverse OPTIONAL FORM 272 (4-77) (Formerly NTIS-35) Department of Commerce UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY WESTERN HEMISPHERE STRONG-MOTION ACCELEROGRAPH STATION LIST - 1976 Any opinions, findings, conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. OPEN FILE REPORT No. 77-374 This report is preliminary and has not been edited or reviewed for conformity with Geological Survey standards and nomenclature. P!'epaped on behaZf of the NationaZ Science Foundation May 1977 ,\ PREFACE The U.S. Geological Survey (USGS) maintains a network of strong motion instrumentation for the National Science Foundation in coop eration with other Federal, State, and local agencies within the United States. In addition, cooperation is extended to similar groups in other countries throughout the world. Previous station lists published by the USGS contained information on only those stations considered to be part of the cooperative U.S. network. As more organizations throughout the world have developed networks, it has become obvious that composite lists of stations for each of the major regions of the world would be a valuable document for all con cerned. This present list is an attempt to bring into one document a minimum amount of information on all of the stations in the western hemisphere known to the USGS. It is hoped that others will begin to compile similar lists for all of the stations in Europe, Asia, and the south Pacific regions. No list of this type can be complete. Only partial information is available on the more recently installed station£, and due to rapid expansion of several of the networks no information is yet available on some of the stations. This list is as complete as practicable as of March 1977. Seismic Engineering Branch U.S. Geological Survey 345 Middlefield Road Menlo Park, CA 94025 iii CONTENTS page Introduction • 1 Notes and abbreviations 3 List of stations 7 Stations in Canada 8 Stations in the United States. 10 Alabama 10 Alas ka 10 Arizona 12 Arkansas • 12 California 13 Colorado • 59 Connecticut. 60 Flori da 60 Georgia 60 Hawai i 61 Idaho • 61 III i noi s . · 62 Indi ana • 62 Kansas 62 Kentucky. • 62 Massachusetts • 63 Mississippi. 63 Mi ssouri • • 63 Montana 64 Nevada •• 64 New Hampshire 65 New Mexico 65 New York. • 65 North Carolina. 66 North Dakota 66 Ohio 66 Oklahoma. 66 Oregon • 67 Pennsylvania 67 Rhode Island 68 South Carolina. • 68 South Dakota •••• 68 Tennessee 69 Utah •• 69 Vermont • 69 Virginia 70 Washington • 70 West Virginia 72 Stations in the Carribean 73 Stations in Central America 75 Stations in South Ameri ca 77 Numerical list of stations • 81 iv I NTRODU enON This list contains information on strong-motion stations installed in the western hemisphere. The stations have been installed and are maintained by many different organizations, although generally one organization is responsible for most of the instruments in anyone country. This is not the case in the United States where there are several different organizations that operate strong-motion instrument networks. The U.S. Geological Survey (USGS) operates a strong-motion instrument network for the National Science Foundation in cooperation with other Federal, State and local agencies. In addition, the USGS cooperates with similar groups both within the United States and in other countries throughout the world. This list contains information on all of the stations in the western hemisphere for which there is some data in the files of the USGS. It is recognized that the list is imcomplete even for stations in the United States. Furthermore,iSince this list is continuously changing, it is impossible to have complete information about all of the stations at anyone time. Rather, it is intended to provide the community of persons interested in the strong-motion programs with a reasonably complete indication of the current status of the networks at this time. The numbering of the stations is still based on the regional locations of the stations. However, for the convenience of the general users of the informa tion, the stations have been arranged by country, north to south, by states in the section for the United States, and then alphabetically by station name. The station name is that which is believed to be the most commonly used name for each station. Prominent facilities, such as dams, pumping plants, and reservoirs are listed under the name of the facility. Buildings are listed under the city in which they are located and then either under the name of the building or the street address. In Los Angeles, the practice of using the street address became common after the San Fernando earthquake, whereas in many other cities, the build ing name is generally used. Ground stations are often named after some nearby landmark such as a town, a hill, or a canyon, etc. To facilitate use of the list, all names that have been used on past records are cross-referenced to the names used herein. A practice of numbering only the instrument station has replaced the former practice of numbering each individual instrument location. Only one number is assigned to a structure such as a building, bridge or dam although there may be several instruments or many acceleration sensors installed at various locations in and near the structure, and its appurtenances in the case of dams. This has resulted in a consol idation of station numbers':::' when compared to those shown in 11 the previous IIStrong-Motion Accelerograph Station List - 1975 , USGS Open File Report No. 76-79. For instance, the Hoover Dam instruments, formerly listed under three separate numbers for the gallery, intake tower and oil house, are now listed under a single number, with the instrument location column indicating the specific emplacement site of the three accelerographs. The other information given for each station is intended to aid in ascer taining the nature of the effect of the site and of the presence of the structure on the motions recorded at each site. Thus, in addition to the station coordi nates, a brief description of the site conditions and structure at each site is given to the extent that this information is known. The brief site descriptions represent an interpretation of the conditions at each station based on data pre sently in the stations files. At numerous locations, particularly building sites 1 in the Los Angeles area, core logs have been obtained showing the soil profile directly beneath the accelerograph station. These soil logs, although providing specific information about the site, must be carefully interpreted since they generally begin at the original ground surface and do not allow for the removal of material during construction. In other instances, the depths to sailor rock interfaces were estimated on the basis of nearby soil logs, published geologic cross-sections, or shallow refraction surveys.