Strong-Motion Program report, January-December 1985

U.S. GEOLOGICAL SURVEY CIRCULAR 1027 AVAILABILITY OF BOOKS AND MAPS OF THE U.S. GEOLOGICAL SURVEY

Instructions on ordering publications of the U.S. Geological Survey, along with prices of the last offerings, are given in the current-year issues of the monthly catalog "New Publications of the U.S. Geological Survey." Prices of available· U.S. Geological Survey publications released prior to the c~ent year are listed in the most recent annual "Price and Availability List" Publications that are listed in various U.S. Geological Survey catalogs (see back inside cover) but not listed in the most recent annual "Price and Availability List" are no longer available. Prices of reports released to the open files are given in the listing "U.S. Geological Survey Open-File Reports, " updated month - ly, which is for sale in microfiche from the U.S. Geological Survey, Books and Open-File Reports Section, Federal Center, Box 25425, Denver, CO 80225. Reports released through the NTIS may be obtained by writing to the National Technical Information Service, U.S. Department of Commerce, Springfield, VA 22161; please include NTIS report number with inquiry. Order U.S. Geological Survey publications by mail or over the counter from the offices given below .

BY MAIL Books

Professional Papeno, Bulletins, Water-Supply Papers, Techniques of Water-Resources Investigations, Circulars, publications of general interest (such as leaflets, pamphlets, booklets), sing le copies of Earthquakes & Volcanoes, Preliminary Determination of Epicenteno, and some mis - cellaneous reports, including some of the foregoing series that have gone out of print at the Superintendent of Documents, are obtainable by mail _from

U.S. Geological Survey, Books and Open-File Reports

Preliminary Determination of Epicenters) can be obtained ONLY from the

(Check or money order must be payable to Superintendent of Documents.)

Maps

For maps, address mail ordeno to

Residents of Alaska may order maps from

Alaska Distribution Section, U.S. Geological Survey, Subscriptions to periodicals (Earthquakes & Volcanoes and

U.S. Geological Survey, Map Distribution

101 Twelfth Ave., Fairbanks, AK 99701 Federal Center, Box 25425 Denver, CO 80225

Superintendent of Documents Government Printing Office Washington, D.C. 20402

Federal Center, Box 25286 Denver, CO 80225

New Federal Building -Box 12

Books

Books of the U.S. Geological Surv ey are available over the counter at the following Geological Survey Public Inquiries Offices, all of which are authorized agents of the Superintendent of Documents :

• WASHINGTON, D.C .- -Main Interior Bldg .. 2600 corridor, 18th and C Sts., NW .
• DENVER, Colorado--Federal Bldg ., Rm. 169, 1961 Stout St.
• LOS ANGELES, California--Federal Bldg., Rm . 7638, 300 N. Los Angeles St.
• MENLO PARK, California--Bldg . 3 (Stop 533), Rm . 3128, 345 Middlefield Rd .
• RESTON, Virglnla--503 National Center, Rm . 1C402, 12201 Sunrise Valley Dr.
• SALT LAKE CITY, Uta h--Federal Bldg ., Rm . 8105, 125 South State St.
• SAN FRANCISCO, California --Customhouse, Rm . 504, 555 Battery St.
• SPOKANE, Washington --U.S. Courthouse, Rm . 678, West 920 Riverside Ave ..
• ANCHORAGE, Alaska--Rm . 101 , 4230 University Dr.
• ANCHORAGE, Alaska -- Federal Bldg, Rm . E-146, 70 1 C St.

Maps

Maps may be purchased over the counter at the U.S. Geolog ical Survey offices where books are sold (al l addresses in above list) and at the following Geological Survey offices:

• ROLLA, Mlssourl-- 1400 Independence Rd.
• DENVER, Colorado--Map Distribution, Bldg. 810, Federal Center
• FAIRBANKS, Alaska--New Federal Bldg., 101 Twelfth Ave .

U.S. GEOLOGICAL SURVEY CIRCULAR 1027 DEPARTMENT OF THE INTERIOR DONALD PAUL HODEL, Secretary

Federal Center, Box 25425 Denver, CO 80225

library of Congress Catalog-Card No. 83-600616

PREFACE

This Program Report contains preliminary information on the nature and availability of strong-motion data recorded by the U.S. Geological Survey (USGS). The Strong-Motion Program is operated by the USGS in cooperation with numerou Federal, State, and local agencies and private organizations. Major objective of thi program are to record both strong ground motion and the response of various types of engineered structures during earthquakes, and to disseminate thi s information and data to t11e international earthquake-engineering research and design community. This volume contains a summary of the accelerograms recovered from the USGS ational Strong-Motion Instrumentation Network during 1985, umm aries of recent strong-motion publications, notes on the avai labi lity of digitized data , and general in fo rmation related to the USGS and other strong-motion programs. The data summary in table 1 co nt..:'lins info rmation on all USGS accelerograms recovered (though not necessarily recorded) during 1985; event data are taken from " Preliminary Determination of Epicenters," published by the USG S. Ronald L. Porcella, Editor U.S. Geological Survey, MS 977 345 Middlefield Rd. Menlo Park, California 94025 Preface 1985 accelerograph records Summaries of some 1985 stron g-motion publ ication Report on recomm ended list of structures fo r seism ic instrumentation in San

Eval uating earthquake hazards in the Los Angeles region-an earth-science

The Morgan HiU , California, earthquake of Apri l 24, 1984 The Morgan HiU Earthquake of April 24, 1984-strong motion records Integrated in strumentation plan for assessing the seismic response of struc-

A general earthquake-observation system (GEOS) Avai lability of strong-mo tion data U.S. Geological Survey data Cal ifornia Division of Mine and Geology data Worldwide data Data sources

1. Summary of USGS accelerograph records recovered during 1985

ill

Bernardino County, California

perspective

tures-a rev iew of the current USGS program

1985 ACCElEROGRAPH RECORDS

By J. C. Sw itzer

During Ja nuary- December 1985, 135 accelerograph records were recovered from the U.S. Geological Survey's (USGS) ational Strong-Motion Instrumentation Network. This compares with a yearly average of 235 record for the period 1972 through 1984. Only two events in the U.S. larger than magnitude 5 were recorded; a magnitude 5.3 on January 24 in eastern California (one record), and a magnitude 5.4 on August 4 near Coalinga, California (seven records). A magnitude 4.8 earthquake on October 2 in southern California triggered 13 instruments at 9 stations; a peak horizontal ground acceleration of 0.09 g was recorded at the toe of Lake Mathews Dam. Twenty-seven accelerograms were recovered from stations in Hawaii during 1985 , recorded primarily during a magnitude 4 .8 event on February 22 and during num erous mal l unidentified earthquakes that occurred throughout the year. Other significan t numbers of accelerogram were recorded at stations near Bear Valley and Coalinga in central California during smal l (magnitude 3-5) earthquakes.

Report on Recommended List of Structures for Seismic Instrumentation in San Bernardino County, California

By G. Brad y, M. Celebi, C. Rojahn, W. lwan, G. Hart, G. Pardoen, L. Schoe lkopf R. Has ke ll, K. Topping, E. Safak, and R. Maley

The main objecti ve of any instrum entation program for tructural system i to improve the under tandjng of the behavior and potential for damage of structures under seismic Ioailing. The acquisition of structural respon e data during earthquakes is essential to confirm and further develop methodologies for analysis and design of earthquake re istant structural systems. This objective can be t be rea lized by electively in trumenting tructural y tern to acq uire trong ground-motion data and the re ponses of structural systems to the strong grou nd motion. To enhance the effort in structure in. trumentation the USGS recently establi shed an advisory committees program . The adv isory committees arc regional committee compo ed of professional from universities, state, federal , and local government agencies, and private compani . The advisory committees are located in seismically active regions and are requested to develop recommended Ii ts of structures for possible instrumentation . The fir t of the e committees was formed in the San Franci co Bay region . The USGS-San Bernardino Advisory Committee on Instrumentation of Structures was formed with the following objectives:

develop a li t of structures in San Bern ard ino County withi n the objecti ves of the USGS structure program ,

develop instrum entation priorities for the list of structures,

coordinate the effort on instrumentation of structures with other programs and organizations,

communicate to the public and private sectors the importance of building instrumentation programs,

extend the program to other region as practicable, ·opti mi ze instrument mruntenance in a coordinated way, and

provide guidance by the development of methodologie related to in trumentation of structures.

This report documents the development of a list of structures recommended to the USGS for instrumentation. Every effort has been made to incorporate the input of local government offici::U , who have provided the majority of Ll1e data.

Edited by S.T. Algermissen

The March 3, 1985, earthquake is the largest earthquake to strike central Chile since 1906. Preliminary reports of the wide distribution of the damage soon made it apparent that the earthquake was very significant as a geophysical even t and that the scientific and engineering study of this major shock would be of great value in improving our understanding of plate margin earthquakes, the characteristics of strong ground motion, building damage, and geologic effects such as soi l liquefaction and land liding. Accordingly, the decision was made to send a U.S. Geological Survey team and instrumentation to Chile with the fo llowing objectives: (1) aid Chilean seismologists in locating the many aftershocks of the main shocks by providing portable seismographs to supplement the Chilean seismograph network; (2) provide some additional strong-motion seismographs; (3) conduct a study of ground response, and its relation to geological factors and to observed Modified MercaUi intensity; and (4) investigate the geological and engineering (damage) consequences of the earthquake. The U.S. Geological Survey team made a reconnai ssance investigation of the damage and occupied 12 sites with the GEOS digital seismographs. Over 55 earthquakes were recorded at two or more sites during the study; 12 were recorded at four or more sites and six were recorded at six sites. Preliminary results of the field studies are outlined in this report to show the general nature of the eng ineering and geological studies of the earthquake and the scope of the site response investigations.

Edited by j.l. Ziony

Potentially destructive earthquakes are inevitable in the Los Angeles region of California, but hazards prediction can provide a basis for reducing damage and loss. This volume identifies the principal geological ly controlled earthquake hazards of the region (s urface faulting, strong shaking, ground failure, and tsunam is), summarizes methods for characterizing their extent and severity, and suggests opportunities for their reduction .

Edited by Seena N. Hoose

The Morgan Hill earthquake , a moderate-s ize (1=6.2) event, was felt throughout central California on April 24, 1984. The epicenter of the earthquake wa located near Halls Valley southwe t of Mount Hamilton, and the event is pre umed to have occurred on the Calaveras fault. Damage, however, was concentrated near the south end of the Ander on Reservoir and in the town of Morgan Hill. A preliminary assessment by the California Office of Emergency Services estimated damage to private property at $7.0 million and to local-government fac ilities at $0.5 million, for a total of $7.5 million in damage. This report contai ns 19 chapters that include descriptions of the geologic, tectonic, and seismologic cttings; postearthquake observations including eismologic, geologic, geode tic, and engineering; and earthquake im plications and conclu ions.

By A. Gerald Brady and Anthony F. Sh akal

Seventy-two strong-motion accelerograph s tation , mostly from within the permanent networks of the U.S. Geological Survey and the California Division of Mines and Geology, were triggered du ring the Morgan Hill earthquake, April24, 1984. Among the more interesting records are the high acceleration recording (1.29 g) from Coyote Lake dam, those from the Gilroy array spanning the region between the San Andreas and Calaveras faults, the record [Tom Hall's Valley (epicentral distance 4 km), and record from buildings, a bridge, and a dam within 20 km of the epicenter. Digitized data fTom 16 stations are available on tape.

By Mehmet Ce lebi, Erda! Safak, A. Gerald Brady, Richard Maley, and Vahid Sotoudeh

There are two main approaches to eval uating seis mic behavior and performance of structural systems. One requires a laboratory in which subsystem s, components, or (if the facility is large enough) protOLypes or large-scale models of complete systems are tested under static, quasistatic, or dynamic loading. The second approach is to use the natural laboratory of the Earth, by observing and studying damage to structures from earthquakes. By determining why specific designs lack earthquake resistance and then by using extensive laboratory testing of modified designs, significant progress in improved designs can be achieved. For such design studies a natural laboratory would be a sei mically prone area that offers a variety of structural systems; in optimum test areas, strong ground motions as well as mode rate-level motions would be experienced frequently. Integral to the "natural laboratory" approach i the advance in strumentation of selected structures o that their responses can be recorded during future eart11quakes. Thus it is essential that integrated arrays of instrumentation be planned and installed to assess thoroughly the relation of ground motion that starts at a source and is transmitted through various soils to a substructure and finally to a superstructure. The direction for seismologists and engineers working together is clear: to develop integrated networks which measure the seismic source, the transmittal of ground motion, and the structural response processes. This report is intended to consider issues that are related to instrumentation-strong-motion arrays, free-field instrumentation near structures, and structural instrumentation schemes. Ultimately the data obtained should reveal the complete phenomena of motion originating at a source and response of a structure at a particular ite.

A General Earthquake-Observation System (GEOS)

By R.D. Borcherdt, j.B. Fletcher, E.G. jensen, G.L. Maxwel l, j.R . VanSchaack, R.E. Warrick, E. Cranswick, M.j .S. johnston, and R. McCiea rn

Microprocessor technology has permitted the development of a General Earthquake-Observation Sy tem (GEOS) u eful for most ei mic application . Central-processingunit contro l, via robust software, of system functions t11at are i olated on hardware module permits field adaptability of the sy tem to a wide variety of active and passive eismic experiments and traightforward modification for in - corporation of improvements in technology. Various laboratory te ts and numerou deployments of a set of the ystem in the field have confirmed design goals, including wide linear dynamic range, broad bandwidth , selectable sen or-type, electable channels, selectable record mode, large data capacity, electable time standard. automatic elf-calibration , imple field operation, full capability to adapt the y tem in the field to a wide variety of experiments, low powe.r, portability, and modest co ts. The systems have been deployed for 15 experiments, including: studies of near-source strong motion; high-frequency microearthquakes; crustal structure; down-hole wave propagation; teleseismicity; and earth-tidal strains. Data ets recorded on the GEOS illu trate the importance of broad bandwidth, high re olution, and wide linear dynamic range for future earthquake studies. System design goals for a microcomputer-controlled system with modular oftware and hardware components as implemented on the GEOS are presented.

U.S. Geological Survey Data

Information about strong-motion accelerograph records that have been acquired and archived by the U.S. Geological Survey can be obtained by mailing a reque t to: BES&G Data Project; U.S. Geological Survey, MS 977; 345 Middlefield Road; Menlo Park, CA 94025 You may decide on either of two less efficient courses of action: visiting the USGS in Menlo Park (275 Middlefield Rd., Building 8). or telephoning specific per onnel. Individual projects involved in the Branch of ES&G Data Project:

Data management for portable digital event-recording seismographs (Charles Mueller, x5646).

Much of the information that is available from NSMlN is stored in a databa e that was at one time available by telephone to anyone outside the USGS . The database, formerly named SMIRS. is no longer directly available to outside user due to personnel and funding limitation . but the information i still kept on one of the USGS in-house computers in a newer database named ESM. External inquirie are preferably handled by mail now. Researchers may still browse through the databa e themselves if they wish , but they must visit the USGS office in Menlo ?ark to do o. Prospective vi itors may wish to review the ESM database User's Guide, which i available on reque t, beforehand. The guide illustrates the kinds of reque t that can be made and the kinds of information that are available in the database. California Division of Mines and Geology Data

Proce sed strong-motion data from elected earthquakes are available from the California Division of Mines and Geology (CDMG). These data have been prepared by the interim CDMG strong-motion data-processing ystem. This system is composed of a serie of programs that have been developed by the California Institute of Technology, the USGS, and the CDMG, with special empha is on the handling of long-duration film records from multiple-channel central recording instruments. The data are grouped by pha e: I, uncorrected acceleration ; II, corrected acceleration , velocities, and displacements; and III , response spectra. Each phase contains three-channel subgroups arranged by station. At present, data from the fo llowing earthquakes, among other , have been processed:

· Santa Barbara earthquake of August 13, 1978 · Imperial Valley earthq uake of October 15, 1979 · Westmorland earthquake of April 26, 1981

Foreign Data

Becau e of the long history of close cooperation between the U.S. and the Central and South American strong-motion programs, many of the data from those programs are available from the same sources as the U.S. data. Information about strong-motion data from the Western Hemisphere will be included in tl1e ESM database operated by the USGS. The USGS does not auempt to obtain first-class cop ic of records from tho e foreign organizations that prepare data reports comparable to those prepared by the USGS . Abstracts of the data reports from such organizations arc presented in this Strong-Motion Program Report cries, and through informal arrangements , copies of the data and records are available.

Worldwide Data

3. National Information Service for Earthquake in 1975 and 1976. Recent acquisitions include a magnetic tape of strong-motion records tri ggered by a swarm of earthquakes that occ urred in northern Italy near the town of Friu li in 1976; these were comp iled by the National Commission for Nuclear Energy and have been given to the center for distribution. Other data include records obtained from
4. National Strong-Motion Program Cali fo rnia earthquakes near Santa Barbara in August 1978, Gilroy in August 1979, El Centro in October 1979, Livermore in January 1980, Westmorland in April 1981 , Coalinga in 1983, and Morgan Hill in April 1984. A table listi ng all the digitized strong-motion records available on magnetic tape may be obtained free of charge from NOAA. These records may be purchased either in punched-card format (including all three instrument components) or in tape format. Address inquiries to NOAA (see next section).

1. NOAA, National Geophysical Data Center (D622) Code E/GCll 325 Broadway St. Boulder, CO 80303 (303) 497-6764

2. National Technical Information Service 5285 Port Royal Rd. U.S. Dept. of Commerce Springfield, VA 2216 1 (703) 487-4560 Engineering (NISEE) Library, UC Berkeley 1301 S. 46th St. Richmond, CA 94804 (415) 231-9401

8. Office of Strong-Motion Studies California Division of Mines and Geology 630 Bercut Drive Sacramento, CA 95814 (916) 322-3 105

2 January 1985 0524:58.2 G.m.t. Southern Calif. 34.050 . 116.530W Magnitude 3.8 ML

3 January 1985 1122:27.6 G.m .t. Central Calif. 36.170N, 120.273W Magnitude 3.7 ML

6 January 1985 1833:25.8 G.m .t. Central Calif. 36.592N, 121.243W Magnitude 3.4 ML

14 January 1985 2117 G.m.t. Central Calif. Epicenter and magnitude unknown

19 January 1985 0030:15.0 G.m.t. Southern Calif. 33.990N, 116.400W Magnitude 3.9 ML

6 Decem ber 1983- 21 January 1985 Hawaii Epicenters and magnitudes unknown Morongo Valley Fire Station (U SGS)

orth Palm Springs Post Office (USGS)

Whitewater Trout Farm (USGS)

Coalinga Oil City (USGS)

Bear Valley Station 1 Fire Station (USGS)

Pleasant Valley Pump Plant (USBR)

North Palm Springs Post Office (USGS)

Kailua-Kon a, Hawaii Fire Station (USGS)

2.3 360° Up 270°

.05 .01 .04 Table 1. Summary of U.S. accelerograph records recovered during 1985-Continut"d

6 December 1983- 21 January 1985 Hawaii, Epicenters and magnitudes unknown-Continued

24 January 1985 1127:21.7 G.m.t. Eastern Cali£. 38.140N, 118 .838W Magnitude 5.3 ML

31 January 1985 0928:49.4 G.m.L Central Cali£. 36.894N, 121.330W Magnitude 2.9 ML

5 November 1984- 2 February 1985 Central Cali£. Epicenter and magnitude unknown

15 February 1985 2326:26.5 G.m .t. Southern Calif. 33 .980N, 116.400W Magnitude 4.0 ML

22 February 1985 0548:29.3 G .m.t. Hawaii 19.329N. 155.21 1W Magnitude 4. ML Station name (owner)

Waimea, Hawaii Fire Station (USGS)

Note: Four additional rccords recovered at Waimea Fire Station.

Terminus Dam Auxiliary Dam (ACOE)

Hollis ter Oi(f. Array, analog (U SGS)

Coalinga Burnett Company (U SGS)

Fun Valley Reservoir Ground Site (USGS)

Hawai i National Park Volcano Observatory (USGS)

Kealakekua, Hawaii Kana Hospital (USGS)

Mauna Kea, Hawaii State Park (USGS)

Pal1ala, Hawaii Kau Hospital (USGS)

Station Trigger location time

19.20° 155.47°W S-minus trigger

(l)

(l)

(l)

(l)

4 1.1 4 Direction Maximum (az) (s)

18 ° Up 09 ° Duration (s)

.04 .02 .06 Table 1. Summary of U.S . accelerograph records recovered during 1985--Continued

24 February 1985 1430 G.m .t. Central Calif. Epicenter and magnirude unknown

23 August 1979- 25 February 1985 Central Calif. Epicenter and magnirude unknown

28 February 1985 0442:08 .5 G.m.t. Southern Calif. 33.960N, 116.290W Magnirudc 3.7 ML

27 September 1984- 20 March 1985 Central Calif. Epicenters and magnirudes unknown

27 March 1985 0833:44.9 G.m.t. Central Calif. 36.247N, 120.442W Magnirude 2.6 ML

24 September 1984- 28 March 1985 Southern Calif. Epicenter and magnirude unknown

22 December 1984- 5 April 1985 Central Calif. Epicenter and magnitude unknown

6 April 1985 1316:19.1 G.m .t. Central Calif. 36.578N, 121.133W Magnirude 3.3 ML

Strong-Motion Program Report, january-Dece mber 1985 SLation name (owner)

Pleasant Valley Pump Plant (USB R)

San Francisco Eastman Kodak Bldg. 122.42°W (U SGS)

Fun Valley Reservoir Ground Site (USGS)

Pine Flat Dam (ACOE)

Note: One each additional record recovered at the lower gallery, upper gallery, and right abutment.

Coalinga Oil City (USGS)

Bear Valley Station 10 36.532°N Webb Residence (USGS)

121.143°W S-minus Trigger time

(l)

(l)

21.2 Direction Maximum trigger (s)

3JOO Up 220° Duration (s)

C) C) C)

6 April 1985 Central Calif. 36.578N, 121.133W Magnitude 3.3 ML-

9 April 1985 0323:24.7 G.m .t. Central CaliJ. 36.212N, 120.283W Mag nitude 3.7 ML

9 April 1985 1308 G.m.l. Central Calif. Epicenter and magnitude unknown

24 June 1984- 23 April 1985 Southern Calif. Epicenters and magnitudes unknown

7 November 1984- 9 May 1985 Central Calif. Epicenter and magni tude unknown

11 May 1985 0859 :23.8 G.m.t. Central Calif. 36.158N, 120.280W Magnitude 4.0 ML

15 May 1985 2108 G.m.t. Hawaii, Epicenter and magnitude unknown

15 May 1985 2221 G.m .t. Hawai i, Epicenter and magnitude unknown

17 May 1985 1859 G .m .l. Hawai i Epicenter and magni tude unknown Station name (owner)

Bear Valley Station 14 36.569°N Upper Butts Ranch 121.043°W (USGS)

Coalinga Oil City 120.360°W (U SGS)

Bear Valley Station 10 36.532°N Webb Residence (USGS)

Rancho de An za (USGS)

Note: One additional record recovered at Rancho de Anza.

Diemer Filter Plant (MWD)

Coalinga Burnell Company (USGS)

Coalinga Oil City (USGS)

Hawaii National Park Volcano Observatory (USGS)

Hawaii National Park Volcano Observatory (USGS)

33.91 o N 117.82°W

19.423° J55 .29! W

19.423° 155.29! W Lime

29.8" Directio n Maximum S-minus (a z) trigger

360° Up 270° Duratio n (s)

(I) C)

Table 1 ! -peak

! -peak Table 1. Summary of U. S. accelerograph records recovered during 1985-Continued

17 May 1985 1902 G.m.t. Hawaii, Epicenter and magnitude unknown

17 May 1985 1903 G.m.t. Hawaii, Epicenter and magnitude unknown

17 May 1985 1905 G.m.t. Hawaii, Epicenter and magnitude unknown

29 November 1984- 18 May 1985 Eastern Calif. Epicenters and magnitudes unknown

25 May 1985 1550:45.4 G.m.l. Southern Calif. 33.950N. 116.650W Magnitude 3.2 ML

28 May 1985 183 1:47.4 G.m.t. Eas tern Calif. 37.550N, 118 .850W Magnitude 3.8 ML Station name (owner)

Hawaii National Park Volcano Observatory (USGS)

Hawaii National Park Volcano Observatory (USGS)

Hawaii National Park Volcano Observatory (USGS)

McGee Creek, SMA (USGS)

Note: Three additional records recovered at McGee Creek, SMA.

McGee Creek. CRA (USGS)

Note: Three additional recordsrecovered at McGee Creek, CRA.

SMA is surface triaxial accelerograph; CRA consists of surface and downhole triaxial packages at indicated depths.

Long Valley Dam Lake Crowley (USGS)

North Palm Springs Post Office (USGS)

McGee Creek, SMA (USGS) Trigger Station location

19.423° N 155.29 JW

37.550°N 11 8.8ll W

33 .924°N 48.6 116.543°W

37.550°N ll8 .811°W S-minus trigger lime

180° Up 090° Duration

.05 .02 .05 Table 1. Summary of U.S. accelerograph records recovered during 1985-Continued

28 May 1985 1831:47.4 G.m.t. Eastern Calif. 37.550N, 118.850W Magnitude 3.8 ML-ConJinued

15 April 1985- 7 June 1985 Southern Calif. Epicenter and magnitude unknown

14 June 1985 1124:03.1 G.m.t. Central Calif. 36.162N, 120.268W Magnitude 3.2 ML

22 December 1984- 26 June 1985 Central Calif. Epicenter and magnitude unknown

27 June 1985 0438:55.4 G.m.t. Central Calif. 36.510 . 121.118W Magnitude 3.3 ML

30 June 1985 2112:24.0 G.m.t. Hawaii 19.371 , 155 .299W Magnitude 4.3 ML

31 July 1984- 2 July 1985 Al as ka, Epicenter and magnitude unknown Station name (owner)

McGee Creek, CRA (USGS) 118.811 ow

Is abella Dam 118.480°W (ACOE)

Main dam Righ t crest

Auxiliary dam Right crest

Auxiliary dam Right abutment

Coalinga Burnett Company (USGS)

Bear Valley Station 6 James Ranch (USGS)

Bear Valley Station 6 James Ranch (USGS)

Hawaii National Park Volcano Observatory (USGS)

Whittier, Alaska RR Dock Building (USG S) Station Trigger location

60.778° 148.692°W S-minus lime trigger

30.7 Direction Maximum (az) (s)

310° Up 220° Duration (s)

Tab le 1 0.1 1 peak 1 peak Table 1. Summary of U.S. accelerograph records recovered during 1 985-Conrinued

4 July 1985 1305:56.9 G.m .t. Eastern Calif. 37.467N, 118.858W Magnitude 3.1 ML

7 July 1985 1200:37.4 G.m .t. Hawaii 19.168N, 155.596W Magnitude 4.2 ML

12 July 1985 0051 G.m .t. Central Calif. Epicenter and magnin1de unknown

24 July 1985 1545:44.2 G.m .t. Central Calif. 36.192N, 120.285W Magnitude 3.1 ML

4 August 1985 1201:57.0 G.m.l. Central Calif. 36.130N, 120.127W Magnitude 5.4 ML Station name (owner)

McGee Creek, SMA (USGS)

McGee Creek, CRA (USGS)

Pahala, Hawaii Kau Hospital (USGS)

Bear Valley Station 10 36.532°N Webb Residence (USGS)

Coalinga Burnett Company (USGS)

Coalinga Burnett Company (USGS)

Coalinga Oil City (USGS)

Pleasant Valley Pump Plant (USBR)

Terminus Dam Auxiliary Dam (ACOE)

Center crest Slalion Trigger location

37.550°N ll8 .8ll ow

36.404°N Jl9.0QJ W S-minus lime trigger

(l)

(s)

(l)

360° Up 270° Dura lion (s)

(') Table 1. Summary of U.S. accelerograph records recovered during 198~Continued

6 November 1984- 14 August 1985 Central Calif. Epicenters and magnitudes unknown

13 July 1985- 14 August 1985 Central Calif. Epicenters and magni tudes unknown

29 August 1985 0455:04.7 G.m.t. Southern Calif. 32.870N, 115.500W Magnitude 3.2 ML

14 September 1985 0302:44.2 G.m .t. Central Calif. 36.266N, 120.255W Magnitude 2.8 ML

7 September 1985- 22 September 1985 Central Cal if. Epicenter and magnitude unknown

30 September 1985 0945 :39.7 G.m .t. Central Calif. 36.582N, 121.225W Magnitude 3.2 ML

2 October 1985 2344:12.4 G.m.t. Southern Calif. 34.030N, 117.250W Magnitude 4 .8 ML Station name (owner)

Bear Valley Station 5 Callens Ranch 121.195°W (U SGS)

Bear Valley Station 12 36.658° Wi\Jiams Ranch (USGS)

ote: One additional record recovered at Wi!Jiarns ranch.

Bear Va!Jey Station 10 36.532°N Webb Residence (U SGS)

Note: One add itional record recovered at Webb Residence.

El Centro Array #6 551 Huston Road (USGS)

Coalinga Burnett Company (USGS)

Bear Valley Station 1 Fire Station (USGS)

Cherry Valley (U SGS)

Colton I-10/15 Interchange (COOT)

Ground vault Station Trigger location

34.06°N 117.30°W S-minus lime trigger

(l)

(l)

17.7 Direction Maximum (az) (s)

082° Up 352° Duration (s)

.05 .01 .05 Table 1. Summary of U.S. accelerograph records recovered during 1985-Continued

2 October 1985 2344:12.4 G.m .t. Southern Calif. 34.030N, 117 .250W Magnitude 4.8 ML-Cominued

Strong-Motion Program Report, january-December 1985 Station name (owner)

Diemer Filter Plant (MWD)

Highland Fire Station (USGS)

Lake Mathews Dam (MWD)

Lorna Linda University 34.05°N Medical Center (USGS)

Lorna Linda VA Hospita.l (VA)

Structure Array:

Channel 1-1st floor center Channel 2-1st floor center Channel 3-1 t floor center Channel 4-4th floor center Channel 5- 1st floor north Channel 6-4th floor center Channel 7-4th floor north Channel 8-lst floor south Channel 9-4th floor south

Mentone Fire Station (U SGS)

Recl1e Canyon Olive Dell Ranch (USGS)

34.01 ° 117.22°W S-minus time trigge r

(l)

(l)

(l)

(l)

(l)

(s)

Down 180° 270° 270° 270° 180° 270° 180° 270°

315° Up 225° Duration (s)

.01 .04 .02 .06 .03 .03 .05 .OJ .05

2 October 1985 2344:12.4 G.m.t. Southern Calif. 34.030N, 117 .250W Magnitude 4.8 ML-Conzinued

3 October 1985 1612 G.m .l. Hawaii Epicenter and magnitude unknown

28 October 1985 0425:52.3 G.m.t. Central Calif. 36.547N. 121.165W Magnitude 3.2 ML

31 October 1985 1955:03.7 G.m.l. Southern Calif. 34.460N, 117 .880W Magnitude 3.7 ML

8 ovember 1985 2210 G.m.l. Central Calif. Epicenter and magnitude unknown

12 November 1985 0444 G.m .t. Central Calif. Epicenter and magnitude unknown

16 January 1985- 24 November 1985 Hawaii, Epicenters and magnitudes unknown Station name (owner)

Sunnymead Egg Ranch (USGS)

Mauna Kea, Hawaii State Park (USGS)

Bear Valley Station 10 36.532°N Webb Residence (USGS)

Bear Valley Station 6 James Ranch (USGS)

Valyermo Forest Station (USGS)

San Justo Damsite (USB R)

Right abutment (Dike)

Bear Valley Station 10 36.532°N Webb Res idence (USGS)

Hawai i National Park Observatory Warehouse 155.264°W (USG S)

Mauna Loa, Hawaii Weather Observatory (USGS)

19.539°N 155.580°W S-minus time trigge r

(s)

030° Up 300° Duration (s)

.07 .02 .03 1-peak

1-peak Table 1. Summary of U.S . accelerograph records recovered during 1985-Continued

16 January 1985- 24 November 1985 Hawaii, Epicenters and magnirudes unknown-Corninued

24 November 1985 1256:15.6 G.m.t. Central Calif. 36.360N, 120.210W Magnitude 2.8 ML

14 August 1985- 28 November 1985 Central Calif. Epicenter and magnirude unknown

28 November 1985 1513:57.2 G.m.t. Central Calif. 36.562N, 121.060W Magnirude 4.5 ML Station name (owner)

Mauna Loa, Hawaii Weather Observatory (USGS)-Continued

Coalinga Oil City (USGS)

Bear Valley Station 1 Fire Station (USGS)

Bear Valley Station 12 36.658°N Williams Ranch (USGS)

Bear Valley Station 1 Fire Station (USGS)

Bear Valley Station 5 Callens Ranch (USGS)

Bear Valley Station 6 James Ranch (USGS)

Bear Valley Station 10 36.532°N Webb Residence (USGS)

Bear Valley Station 12 36.658°N Williams Ranch (USGS)

Bear Valley Sta ti on 14 36.569° Upper Butts Ranch (USGS)

121.043°W S-minus lime trigger

(s)

310° Up 220° Duration

{gl

.28 .11 .20 (s)

2.7 0.4 2.1 Table 1. Summary of U.S. accelcrograph records recovered during 1985-Continucd

5 December 1985 0628:36.9 G.m.t. Northern Calif. 40.600N, 124.500W Magnirude 3.2 ML

12 December 1985 1901:19 .8 G.m .t. Hawaii 20.615N, 155.762W Magni tude 4.5 ML

12 December 1985 2118:39 .3 G.m.t. Hawaii 19.516N, 155.908W Magnitude 4.0 ML

30 December 1985 1241:02.7 G.m .t. Southern Alaska 61.541N, 150.340W Magnirude 5.5 M8 Station name (owner)

Eel River Valley Array 40.563°N Centerville Beach (U SGS)

Honokaa, Hawaii Fire Station (USGS)

Kealakekua, Hawaii Kon a Hospital (USGS)

Anchorage Alaska Hospital (USGS)

Anchorage, Alaska Pacific University (U SGS)

Anchorage, Alaska Fire Station #1 (MAN C)

Anchorage, Alaska Fire Station #3 (MANC)

Anchorage, Alaska Fire Station #4 (MANC)

Note: One additional record' recovered at Fire Station #4.

Anchorage, Alaska Fire Station #7 (MANC)

61.146°N 149.950°W S-minus time trigger

e>

(l)

Direction Maximum (az) (s)

e>

360° Up 270° Duration (s)

(1) Table 1. Summary of U.S. accelerograph records recovered during 1985-Continued

30 December 1985 1241:02.7 G.m .L Southern Alaska 61.541N, 150.340W Magnirude 5.5 M8 - Corninued

31 December 1985 2334 G.m.L Hawaii EpicenLcr and magniLude unknown Station name (owner)

Anchorage, Alaska Federal Building (USGS)

Anchorage, Alaska Russian Jack Park (USGS)

Hawaii Nalional Park Volcano ObservaLory (USGS) Trigger Station location

19.423°N 155.291°W S-minus trigger time

37.9 Direction Maximum (az) (s)

(2) Duration (s) amplitude

Periodicals

E arthq ua kes & Volcanoes (issued bimonthly).

Prellmlnary Dete rmination of E picente rs (issued monthly).

Technical Books and Reports

Professional Papers are mainly comprehensive scientific reports of wide and lasting interest and importance to professional scientists and engineers. Included are reports on the results of resource studies and of topographic, hydrologic, and geologic investigations . They also include collections of related papers addressing different aspects of a single scienti fie topic .

Bulletins contain significant data and interpretations that are of lasting scientific interest but are generally more limited in scope or geographic coverage than Professional Papers . They include the results of resource studies and of geologic and topographic investigations ; as well as collections of short papers related to a specific topic.

Water-Supply P a pers are comprehensive reports that present significant interpretive results of hydrologic investigations of wide in terest to professional geologists, hydrologists, and engineers . The series covers investigations in all phases of hydrology, including hydrogeology, avai lability of water, quality of water, and use of water.

Ch'culars present administrative information or important scientific information of wide popular interest in a format designed for distribution at no cost to the public. Wormation is usually of short-term interest.

Wa ter-Resources Investigations R epor ts are papers of an interpretive nature made available to the public outside the formal USGS publications series. Copies are reproduced on request unlike formal USGS publications, and they are also available for public inspection at depositories indicated in USGS catalogs.

Opcn-Flle Reports include unpublished manuscript reports, maps, and other material that are made available for public consultation at depositories. They are a nonpe:rmanent form of publication that may be cited in other publications as sources of information.

Maps

Geologic Q uadra ngle Maps are multicolor geologic maps on topographic bases in 7 1/2- or IS -minute quadrangle formats (scales mainly 1 :24,000 or 1:62,500) showing bedrock. surficial, or engineering geology. Maps generally include brief texts; some maps include structure and columnar sections only .

Geophysical Investigations M a ps are on topographic or planimetric bases at various scales ; they show results of surveys using geophysical techniques, such as gravity, magnetic, seismic, or radioactivity, which reflect subsu rface structures that are of economic or geologic significance. M any maps include correlations with the geology.

Miscellaneous I n vestigations Series M aps are on planimetric or topographic bases of regular and irregular areas at various s~ales ; th.ey present a wide variety of format and subject matter. The s~nes ~lso mcludes 7 1/2-minute quadrangle photo geologic maps on plarumetnc bases which show geology as interpreted from aerial photographs . Series also includes maps of Mars and the Moon.

Coal Investigations Maps are geologic maps on topographic or planimetric bases at various scales showing bedrock or surficial geology, stratigraphy, and structural relations in certain coal-resource areas .

011 and Gas Investigations Char ts show stratigraphic information for certain oil and gas fields and other areas having petroleum potential.

Miscellaneous Field Studies Maps are multicolor or black-andwhite maps on topographic or planimetric bases on quadrangle or irregular areas at various scales. Pre- 1971 maps show bedrock geology in relation to specific mining or mineral-deposit problems; post-1971 maps are primarily black-and-white maps on various subjects such as environmental studies or wilderness mineral investigations .

Hyd rologic Investigations Atlases are multicolored or black-andwhite maps on topographic or planimetri1.. bases presenting a wide range of geohydrologic data of both regular and irregular areas ; principal scale is 1:24,000 and regional studies are at 1:250,000 scale or smaller.

Catalogs

Permanent catalogs, as well as some others, giving comprehensive listings of U.S . Geological Survey publications are available under the conditions indicated below from the U.S. Geological Survey, Books and Open-File Reports Section, Federal Center, Box 25425, Denver, CO 80225 . (See latest Price and Availability List.)

"Publications of the Geological Survey, 1879- 1961" may be purchased by mail and over the counter in paperback book fom1 and as a set of microfiche.

" Pu blications of the Geological Sur vey, 1962-1970" may be purchased by mail and over the counter in paperback book form and as a set of microfiche.

"Publications or the U.S. Geological Survey, 1971- 198 1" may be purchased by mail and over the counter in paperback book form (two volumes, publications listing and index) and as a set of microfiche.

Supplemen ts for 1982, 1983, 1984, 1985, 1986, and for subsequent years since the last permanent catalog may be purchased by mail and over the counter in paperback book form .

State catalogs, "List of U.S . Geological Survey Geologic and Water-Supply Reports and Maps For (State)," may be purchased by mail and over the counter in paperback booklet form only .

"P r ice a nd Avalla biUty L ist or U.S. Geological Survey Publicati ons," issued annual ly, is available free of charge in paperback booklet form only.

Selected copies or a monthly catalog "New Publications of the U.S. Geological Survey" available free of charge by mail or may be obtained over the coun ter in paperback booklet form only. Those wishing a free subscription to the monthly catalog "New Publications of the U.S . Geological Survey" should write to the U.S. Geological Survey, 582 National Center, Reston, VA 22092.

Note.-- Prices of Government publications listed in older catalogs, announcements, and publications may be incorrect. Therefore, the prices charged may differ from the prices in catalogs, announcements, and publications.

Where this page came from

This page was imported from U.S. Geological Survey. Published by the U.S. Geological Survey and, as a work of the United States government, in the public domain.

Nobody has written it yet — it is the source material at a new address, which is why search engines are asked to skip it and why no one earns from it. It is up for grabs: take it on, and it is yours to rewrite and to earn from.