Table of Contents for this Document File: Name of File Contributing Source File directory/location Information on the region covered Variable Table Format File Sample Data Variable File Additional Documentation ==================================================================== ==================================================================== ==================================== Variable Table The variable table contains a list of parameters contained in the data as well as information on the existence of histograms which can be viewed in GeoVu. File syk.tab for this catalog follows ==================================== DATA SET TITLE: syk PRINCIPAL INVESTIGATOR: SYK Sykes L.R., Earthquake Catalogue. (1963, 1965, 1966) Sykes, Lynn R., 1963: "Seismicity of the South Pacific Ocean" Journal of Geophysical Research, v. 68, No 21 pp5999-6006. Sykes, Lynn R. 1965: "Seismicity of the Arctic", Bull. Seismological Society America, v55, No 2., pp 501-518 Sykes, Lynn, R., 1966: "The Seismicity and deep structure of Island Arcs", Journal of Geophysical Research, v 71, No 12, pp 2981 - 3005. Sykes, Lynn R., and Park Landisman, 1964 "The seismicity of East Africa the Gulf of Aden and teh Arabian and the Red Seas", Bull. Seismological Soc. America v 54, No 6, 1927 - 1940. CONTRIBUTING ORGANIZATION: DATA FILE: syk.bin #\data\cam\syk\syk.bin NUMBER OF RECORDS: 3171 ASCII FILE SIZE: 260022 BINARY FILE SIZE: 247338 SUMMARY: SYK Sykes L.R., Earthquake Catalogue. (1963, 1965, 1966) Regional data from Sykes catalog 1956 - 1963 For more information on earthquakes in the Arctic ocean see: Sykes, Lynn R., 1965, "Seismicity of the Arctic," Bulletin of the Seismological Society of America, vol. 55, no. 2 (April), pp. 501-518. 1. VARIABLE NAME HISTOGRAM NAME 2. ASCII FORMAT BINARY FORMAT NO. & MIN/MAX VALUES Stat End Type Prc Stat End Type Prc Min. Max. #nonzero source SOURCE.CST 1 3 char 0 1 3 char 0 SYK SYK 3171 century_and_year CENTURY_.LST 4 8 short 0 57 58 short 0 1950 1963 3171 month MONTH.LST 9 10 short 0 59 60 short 0 1 12 3171 day DAY.LST 11 12 short 0 61 62 short 0 1 30 3171 hour HOUR.LST 13 14 short 0 63 64 short 0 1 23 3025 minute MINUTE.LST 15 16 short 0 65 66 short 0 1 59 3110 second SECOND.LST 17 19 short 1 67 68 short 1 1 59 3118 latitude_abs NO HISTOGRAM 20 24 long 3 NOT IN BINARY latitude_ns NO HISTOGRAM 25 25 char 0 NOT IN BINARY longitude_abs NO HISTOGRAM 26 31 long 3 NOT IN BINARY longitude_ew NO HISTOGRAM 32 32 char 0 NOT IN BINARY depth DEPTH.LST 33 35 short 0 69 70 short 0 8 736 1723 mb_magn MB_MAGN.LST 36 38 short 2 14 15 short 2 0 0 0 MB NO HISTOGRAM 39 40 constant 0 NOT IN BINARY flag_isoseismal FLAG_ISO.CST 41 43 char 0 16 18 char 0 0 0 0 intensity INTENSIT.CST 44 44 char 0 19 19 char 0 2 X 29 flags_ngdc FLAGS_NG.CST 45 50 char 0 20 25 char 0 S T 2 flag_diastrophic FLAG_DIA.CST 45 45 char 0 26 26 char 0 0 0 0 flag_tsunami FLAG_TSU.CST 46 46 char 0 27 27 char 0 T T 1 flag_seiche FLAG_SEI.CST 47 47 char 0 28 28 char 0 S S 1 flag_volcanism FLAG_VOL.CST 48 48 char 0 29 29 char 0 0 0 0 flag_non_tectonic FLAG_NON.CST 49 49 char 0 30 30 char 0 0 0 0 flag_infrasonic FLAG_INF.CST 50 50 char 0 31 31 char 0 0 0 0 Flinn_Engdahl_region FLINN_EN.LST 51 53 short 0 32 33 short 0 4 688 3171 ms_local_magn MS_LOCAL.LST 54 55 short 1 34 35 short 1 0 0 0 MS NO HISTOGRAM 56 57 constant 0 NOT IN BINARY z_h Z_H.CST 58 58 char 0 36 36 char 0 0 0 0 flag_cultural FLAG_CUL.CST 59 59 char 0 37 37 char 0 C F 122 flag_other FLAG_OTH.CST 60 60 char 0 38 38 char 0 0 0 0 magnitude_other NO HISTOGRAM 61 63 short 2 NOT IN BINARY magn_other_source NO HISTOGRAM 64 66 char 0 NOT IN BINARY international_data_exchange_event INTERNAT.CST 67 67 char 0 44 44 char 0 0 0 0 flag_depth_control_PDE FLAG_DEP.CST 68 68 char 0 45 45 char 0 0 0 0 number_of_stations_or_quality NUMBER_O.CST 69 71 char 0 46 48 char 0 3 239 3168 time_authority TIME_AUT.CST 72 72 char 0 49 49 char 0 0 0 0 ml_magn_local ML_MAGN_.LST 73 75 short 2 50 51 short 2 0 0 0 ml_magn_local_scale ML_MAGN1.CST 76 77 char 0 52 53 char 0 0 0 0 ml_magn_local_authority NO HISTOGRAM 78 80 char 0 NOT IN BINARY latitude LATITUDE.LST NOT IN ASCII 4 7 long 3 -38 87 3163 longitude LONGITUD.LST NOT IN ASCII 8 11 long 3 -180 178 3165 depth_negate DEPTH_NE.LST NOT IN ASCII 12 13 short 0 -744 0 1771 magn_other MAGN_OTH.LST NOT IN ASCII 39 40 short 2 3 7 759 magn_other_authority MAGN_OT1.CST NOT IN ASCII 41 43 char 0 BRK WEL 759 ml_magn_local_source ML_MAGN2.CST NOT IN ASCII 54 56 char 0 0 0 0 year_decimal YEAR_DEC.LST NOT IN ASCII 71 78 double 10 1950.002 1963.636 3171 ==================================== Format File The format file is a listing of the variable names, types and positions within the binary and ASCII files. The file is composed of two parts - the first section is the format of the ASCII file, the second, the format of the binary file. The ASCII format file *.af must be renamed to *.afm to be used with the Freeform utility. Likewise, the binary format file *.bf must be renamed to *.bfm. The structure of this file is: Field 1: Variable name Field 2: First position of variable in line Field 3: Last position of variable in line Field 4: Type of variable Field 5: Precision of variable **Refer to Freeform user's manual for further information See format file syk.fmt in this directory ==================================== ======================================================== Sample Data A representative sample of data records showing the first 10 lines and the last 10 lines of the ASCII data file(i.e. the .dat file). The first and last 10 records of syk.dat follow ======================================================== SYK 1950 1 2 04229819030N 67720W 37 0MB 89 0MS 470PAL 42 0 SYK 1950 211112956215340S175230W236 0MB 173 0MS 650PAS 036 0 SYK 1950 211112956215340S175230W236 0MB 173 0MS 0 36 0 SYK 1950 212221458418860S177790E 26 0MB 182 0MS F 650PAS 034 0 SYK 1950 212221458418860S177790E 26 0MB 182 0MS 0 34 0 SYK 1950 3 910 336815630N 60390W 0 0MB 4 92 0MS F 470PAL 063 0 SYK 1950 3 910 336815630N 60390W 0 0MB 92 0MS 470PAL 63 0 SYK 1950 524125451017110N 60260W 11 0MB 92 0MS 430PAL 021 0 SYK 1950 524125451017110N 60260W 11 0MB 92 0MS 430PAL 21 0 SYK 1950 7 9 235346 7860N 72590W 41 0MB X 99 0MS C 0 064 0 . . . . SYK 1963 2 916 458843870N150660E 0 0MB 222 0MS 0 89 0 SYK 1963 210213552444420N148030E 96 0MB 221 0MS 0 112 0 SYK 1963 214 85032110180N 62170W 0 0MB 97 0MS 0 20 0 SYK 1963 21414 931844910N149060E116 0MB 221 0MS 0 11 0 SYK 1963 219 05047811410N 73840W 0 0MB 96 0MS 0 6 0 SYK 1963 2222114 1918220N 71300W 9 0MB 88 0MS 430PAL 63 0 SYK 1963 223171243549580N158650E 11 0MB 222 0MS 0 59 0 SYK 1963 225 71842950860N159910E 0 0MB 222 0MS 0 10 0 SYK 1963 228 1 618245540N145960E 0 0MB 224 0MS 0 8 0 SYK 1963 821 33917814380N 72410W 0 0MB 94 0MS 450PAL 47 0 ==================================== Variable File This file contains statistical information on each of the variables in the data set. The variable file syk.var for this catalog follows ==================================== Input file : syk.bin Input format file: syk.fmt No requested precision, Approximate number of sorting bins = 100 source: 3171 values read minimum: SYK found at record 1 maximum: SYK found at record 1 Summary file: source.cst Histogram data precision: 0, Number of sorting bins: 106 latitude: 3171 values read minimum: -37.890 found at record 1082 maximum: 87.140 found at record 1597 Summary file: latitude.lst Histogram data precision: 0, Number of sorting bins: 107 longitude: 3171 values read minimum: -179.990 found at record 1685 maximum: 179.970 found at record 1026 Summary file: longitud.lst Histogram data precision: 0, Number of sorting bins: 86 depth_negate: 3171 values read minimum: -738 found at record 2364 maximum: 0 found at record 6 Summary file: depth_ne.lst Histogram data precision: 0, Number of sorting bins: 1 mb_magn: 3171 values read minimum: 0.00 found at record 1 maximum: 0.00 found at record 1 Summary file: mb_magn.lst flag_isoseismal: 3171 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_iso.cst intensity: 3171 values read minimum: found at record 1 maximum: X found at record 10 Summary file: intensit.cst flags_ngdc: 3171 values read minimum: found at record 1 maximum: T found at record 212 Summary file: flags_ng.cst flag_diastrophic: 3171 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_dia.cst flag_tsunami: 3171 values read minimum: found at record 1 maximum: T found at record 212 Summary file: flag_tsu.cst flag_seiche: 3171 values read minimum: found at record 1 maximum: S found at record 531 Summary file: flag_sei.cst flag_volcanism: 3171 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_vol.cst flag_non_tectonic: 3171 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_non.cst flag_infrasonic: 3171 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_inf.cst Histogram data precision: 0, Number of sorting bins: 101 Flinn_Engdahl_region: 3171 values read minimum: 4 found at record 2616 maximum: 688 found at record 2051 Summary file: Flinn_En.lst Histogram data precision: 0, Number of sorting bins: 1 ms_local_magn: 3171 values read minimum: 0.0 found at record 1 maximum: 0.0 found at record 1 Summary file: ms_local.lst z_h: 3171 values read minimum: found at record 1 maximum: found at record 1 Summary file: z_h.cst flag_cultural: 3171 values read minimum: found at record 1 maximum: F found at record 4 Summary file: flag_cul.cst flag_other: 3171 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_oth.cst Histogram data precision: 0, Number of sorting bins: 6 magn_other: 3171 values read minimum: 0.00 found at record 3 maximum: 7.75 found at record 1325 Summary file: magn_oth.lst magn_other_authority: 3171 values read minimum: found at record 3 maximum: WEL found at record 166 Summary file: magn_ot1.cst international_data_exchange_event: 3171 values read minimum: found at record 1 maximum: found at record 1 Summary file: internat.cst flag_depth_control_PDE: 3171 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_dep.cst number_of_stations_or_quality: 3171 values read minimum: found at record 30 maximum: 239 found at record 180 Summary file: number_o.cst time_authority: 3171 values read minimum: found at record 1 maximum: found at record 1 Summary file: time_aut.cst Histogram data precision: 0, Number of sorting bins: 1 ml_magn_local: 3171 values read minimum: 0.00 found at record 1 maximum: 0.00 found at record 1 Summary file: ml_magn_.lst ml_magn_local_scale: 3171 values read minimum: found at record 1 maximum: found at record 1 Summary file: ml_magn1.cst ml_magn_local_source: 3171 values read minimum: found at record 1 maximum: found at record 1 Summary file: ml_magn2.cst Histogram data precision: 0, Number of sorting bins: 14 century_and_year: 3171 values read minimum: 1950 found at record 1 maximum: 1963 found at record 3135 Summary file: century_.lst Histogram data precision: 0, Number of sorting bins: 12 month: 3171 values read minimum: 1 found at record 1 maximum: 12 found at record 50 Summary file: month.lst Histogram data precision: 0, Number of sorting bins: 30 day: 3171 values read minimum: 1 found at record 118 maximum: 30 found at record 356 Summary file: day.lst Histogram data precision: 0, Number of sorting bins: 24 hour: 3171 values read minimum: 0 found at record 1 maximum: 23 found at record 18 Summary file: hour.lst Histogram data precision: 0, Number of sorting bins: 60 minute: 3171 values read minimum: 0 found at record 74 maximum: 59 found at record 126 Summary file: minute.lst Histogram data precision: 0, Number of sorting bins: 60 second: 3171 values read minimum: 0.0 found at record 770 maximum: 59.9 found at record 1162 Summary file: second.lst Histogram data precision: 0, Number of sorting bins: 86 depth: 3171 values read minimum: 0 found at record 6 maximum: 738 found at record 2364 Summary file: depth.lst Histogram data precision: 0, Number of sorting bins: 14 year_decimal: 3171 values read minimum: 1950.0028205797 found at record 1 maximum: 1963.6360336695 found at record 3171 Summary file: year_dec.lst ==================================== The bibliographic file syk.bib for this catalog follows ==================================== This is the NGDC Bibliography for Large Earthquakes "Destructive and Near Destructive Earthquakes of Puerto Rico and Nearby Regions." House of Representatives Document No. 269. Sixty-Sixth Congress, First Session. (1946): 1-4. "Destructive and Near-Destructive Earthquakes in California and Western Nevada: 1769 - 1932." Coast and Geodetic Survey (1932): 1-14. "Earthquakes in the Various States." Publication of the U.S. Printing Office GPO Jacket No 777-941 (1963): 106-18. "Puerto Rico Earthquakes, 1919 - 1937." Data Complied From Monthly Weather Review (1937): 1-2. "Research of Seismicity in Seismic Zones of Less Activity: Central Cuba." Publication of the Soviet Geophysical Committee and the Academy of Sciences of the USSR (1983): 1-134. ---, Authors. Catalog of Significant Earthquakes 2000 B.C. - 1979 Including Quantitative Casualties and Damage. Soft Cover Booklet. Boulder, CO: World Data Center A for Solid Earth Geophysics, U.S. Department of Commerce, NOAA, Environmental Data and Information Service, 1981. Report SE-27. ---. "Seismicity of the Earth." Bulletin of the Geological Society of America Vol. 56 (1945): 603-68. ---. "The Puerto Rico Earthquakes of October-November, 1918." The Bulletin of the Seismological Society of America Vol. 9.No. 4 (1919): 95-127. ---. "The Seismicity of the Caribbean Region." Journal of Geophysical Research Vol. 70.No. 20 (1965): 5065-74. . "Magnitude 8 and Greater Earthquakes, 1897-1972 Inclusive." One-page, copy. . "Major Earthquakes." One-page, copy. Boulder, Colorado: National Geophysical and Solar-Terrestrial Data Center. . "Significant Earthquake Activity, 1972." One-page, copy. . "World Seismicity and Volcanic Activity in the Year 1974." One-page, copy. Abe, K. "Size of Great Earthquakes of 1837-1974 Inferred From Tsunami Data." Journal of Geophysical Research Volume 84.No. B4 (1979): Pages 1561-68. Anonymous. Great Earthquakes. AnonymousVolume 1, No. 2. Washington, D.C.: U.S. Congress, 1888. Barazangi, M. and Dorman J. "World Seismicity Maps Compiled From ESSA, Coast and Geodetic Survey, Epicenter Data, 1961 - 1967." Bulletin of the Seismological Society of America Vol. 59.No. 1. (1969): 1-11. Benhallou, H. "Les Catastrophes Séismiques De La Region D'Echelif Dans Le Contexte De La Seismicite Historique De L"Algerie." Large Soft Cover Book. Presentee a L'Universite Des Sciences Et De La Technologie Houari Boumediene Alger, 1985. British Association for the Advancement of Science. Catalogue of Earthquakes 1918-1924. Piccadilly, London: British Association for the Adbancement of Science, 1928. No. 21. Båth, M. Duda S. J., AuthorsSoft Cover Booklet. M. Duda S. J. Båth. Report No. 1-79 ed. Uppsala, Sweden: Seismological Institute, 1979. Report No. 1-79. Coffman, J. L. and von Hake C. A. "Earthquake History of The United States." Publication of the Environmental Data Service of NOAA .Publ. 41-1 (1973): 1-208. Coffman, J. L. and von Hake C. A. Stover C. W., Editors. Earthquake History of the United States. Hard Back (3) and Soft Cover Book (two copies). Publication 41-1 Revised Edition (Through 1970) Reprinted 1982 with Supplement (1971-1980) ed. U.S. Government Printing Office, Washington, D.C. and Boulder, CO: U.S. Department of Commerce, and U.S. Department of the Interior, 1973. 41-1. Coffman, J. L., Editor. Earthquake History of the United States. Soft Cover Booklet (one copy). Editors. J. L. Coffman. 1979 ed. Boulder, CO: U.S. Department of Commerce, National Oceanic and Atmospheric Administration and U.S. Department of the Interior, Geological Survey., 1979. Publication 41-1. Couch, R. Victor L. and Keeling K. Costal and Offshore Earthquakes of the Pacific Northwest. Corvallis, Oregon: School of Oceanography at Oregon State University, 1974. Crampin, S. Fyfe C. J. Bickmore D. P. and Linton H. W. "Atlas of Seismic Activity 1909-1968." Soft Cover Booklet, Journal. Seismological Bulletin No. 5 (1976). DeNevi, D. Earthquakes. Millbrae, California: Celestial Arts, 1977. Ganse, R. A. Nelson J. B. "Significant Earthquake File." Xerox Copy. Boulder, CO: NOAA/National Geophysical and Solar-Terrestrial Data Center. Ganse, R. A. and Nelson J. B. "Catalog of Significant Earthquakes: 2000 B.C. - 1979." Publication of the Environmental Data and Information Service .July (1981): 1-153. Gupta, H. K. and Negi J. G. "High Magnitude Global Seismicity and Lateral Velocity Gradients." Vol. 80 (1970): 92-101. Gutenberg, B and Richter C. F. "Seismicity of the Earth." Bulletin of the Geological Society of America Vol. 56 (1945): 603-68. Gutenberg, B. and Richter C. F. "Seismicity of the Earth." Geological Society of America Special Paper No. 34 (1941): 1-131. Hall, M. Earthquakes in Jamaica From 1688 to 1919. Kingston, Jamaica: Government Printing Office, 1922. Hall, M. M. A. F. R. A. S. F. R. Met S., Government MeteorologistSoft Cover Booklet. Barrister-At-Law, Government Meteorologist. M. Hall. Kingston, Jamaica: Government Printing Office, 1922. Hays, W. W. Algermissen S. T. Espinosa A. F. Perkins D. M. Rinehart W. A. Guidelines for Developing Design Earthquake Response Spectra. Golden, CO: U.S. Geological Survey, 1974. Heck, N. H. "Destructive and Extremely Severe Earthquakes in California 1769 - 1927." Report for the Division of Terrestrial Magetism and Seismology (1931): 1-12. Heck, N. H. Eppley R. A., Editors. Earthquake History of the United States. Soft Cover Booklet. Editors. N. H. Eppley R. A. Heck. Revised (1938, 1956) Editions ed. Washington, D.C.: U.S. Government Printing Office, 1938. No. 41-1. Heck, N. H. and Davis R. M. Jr. "A List of Earthquakes Published in 1688." Reprinted From Bulletin of the Seismological Society of America Volume 36.No. 4 (1946): Pages 363-72. Heck, N. H. and Wood H. O., Editor. Earthquake History of the United States. Soft Cover Booklet. N. H. Heck. Original Edition (1938)(2 Copies), Revised (1947) Edition, Revised 1951 Edition. ed. Washington, D.C.: United States Government Printing Office, 1938. Heck, N. H., Division Chiefforty typewritten pages. Linehan, D. Compilation of Earthquakes in Northeastern United States and Eastern Canada 1534 - 1957. Weston Geophysical Research Inc. Magnati, D. V.Thirteen-page, typewritten report. Map Showing Recomputed Hypocenters of Earthquakes in the Eastern and Central United States and Adjacent Canada, 1925-1980. Seismic. Reston, Virginia: U.S. Department of Interior, USGS, 1984. McClain, W. C. and Myers O. H.45 pages of 8 1/2" X 11 bound copy. Springfield, Virginia: U. S. Department of Commerce, 1970. ORNL-4582. Montandon, F. Les Tremblements De Terre Destructeurs En Europe, Catalogue Par Territoires Séismiques, De L'an 1000 à 1940 (Destructive Earthquakes in Europe, Catalog of Seismic Stations, From 1000-1940). Geneve: à l'Union internationale de Secours, Genéva, 1953. Nottis, G. N. Editor New York State Geological Survey. Epicenters of Northeastern United States and Southeastern Canada, Onshore and Offshore; Time Period 1534-1980. Series No. 38, Map and Chart ed. Albany, N.Y.: The University of the State of New York, The State Education Department, Feb. 1983. Nuttli, O. W., AuthorSoft Cover Booklet. O. W. Nuttli. First Edition ed.Volume NO. 1, Monograph Series, Central United States Earthquake Consortium. Marion, Illinois: Funding provided by the Federal Emergency Management Agency, 1987. Person, W., CompilerXerox Copy. 1983. Poeschel, K. R. Stromberg P. A. Seismic Safety Commission Staff, Project DirectorSoft Cover Booklet. Eureka, CA: State of California Seismic Safety Commission, 1980. SSC 80-3. Reid, H. F. and Taber S. "The Porto Rico Earthquake of 1918." House of Representatives Publication (66th Congress, 1st Session) Document No. 269 (1919): 3-74. Results of Researches on the International Geophysical Projects. Research of Seismicity in Seismic Zones of Less Activity (Central Cuba). Moscow, Russia: Nauka, 1983. Ritsema, A. R. and Karnik V. "European Catastrophic Earthquakes." Tectonophysics (International Journal of Geotectonics and the Geology and Physics of the Interior of the Earth Volume 53.No. 3/4 (1979): Pages 155-337. Rutten, L. M. R. and Van Raadshooven B. "On Earthquake Epicentres and Earthquake Shocks Between 1913 and 1938 in the Region Between 0° and 30° N and 56° and 120° W." Nederl. Akad. Wet., Verh. Tweede Sectie, Deel XXXIX.No. 4 (1940): Pages 1-44. Ryall, A. Slemmons D. B. & Gedney L. D. "Seismicity, Tectonism, and Surface Faulting in the Western United States During Historic Time." Bulletin of the Seismological Society of America Vol. 56.No. 5 (1966): 1105-35. Seismicity Map of the Conterminous United States and Adjacent Areas, 1965-1974 and 1975 - 1984. Seismic. Reston, Virginia: U.S. Department of Interior, USGS, 1977. Significant Earthquakes 1900 - 1979. Seismic. Boulder, CO: National Geophysical and Solar-Terrestrial Data Center and World Data Center A for Solid Earth Geophysics, with support from Office of U.S. Foreign Disaster Assistance Agency for International Development. Sykes, L. R. and Ewing M. "The Seismicity of the Caribbean Region." Journal of Geophysical Research Vol. 70.No. 20 (1965): 5065-74. Thomas, Alun J. "World Seismic Regions (Gutenberg and Richter 1954)." Twentieth Century Earthquakes, 1:, 1900 - 1919, 2:, 1920 - 1929, 3:, 1930 - 1939, 4:, 1940 - 1949, and Geological Events 1979 and 1980. Xerox CopyGeology Schools Service, National Museum of Wales, 1981. Wood, H. O. Allen M. W. and Heck N. H., Chief, Division of Terrestrial Magnetism and SeismologyHard Cover Book. United States Government Printing Office: U.S. Department of Commerce, Coast and Geodetic Survey, 1934. Special Publication No. 191. Wood, H. O. Heck N. H. and Eppley R. A., Editors. Earthquake History of the United States. Soft Cover Booklet. Editors. H. O. Heck N. H. and Eppley R. A. Wood. Revised (1960) Edition ed. U.S. Government Printing Office, Washington, D.C.: U.S. Department of Commerce, Coast and Geodetic Survey, 1961. No. 41-1. Wood, H. O. and Heck N. H., Editors. Earthquake History of the United States. Soft Cover Booklet. Editors. H. O. and Heck N. H. Wood. Revised (1951) Edition ed. United States Government Printing Office, Washington, D.C.: U.S. Department of Commerce, Coast and Geodetic Survey, 1951. Woollard, G. P. A Catalogue of Earthquakes in the United States Prior to 1925 (Based on Unpublished Data Compiled by Harry Fielding Reid and Published Sources Prior to 1930). Honolulu, Hawaii: Hawaii Institute of Geophysics, University of Hawaii, June 1968. HIG-68-9 Data Report No. 10. ======================================================== Additional Documentation Any other files contributed to or generated by NGDC as documentation for the data base follows. ========================================================