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 mos.tab for this catalog follows ==================================== DATA SET TITLE: mos PRINCIPAL INVESTIGATOR: CONTRIBUTING ORGANIZATION: MOS LATITUDE: 55.73633 N LONGITUDE: 37.62167 E MOS Elevation: 121.0 LOCATION and NAME: Moscow (Moskva) DATA FILE: mos.bin USGS Russia (MOS) catalog, 1950-1961 #\data\asia\central\cis\mosgs\mos.bin Global listing from Moscow, Russia, 1928-1993 #\data\globecat\mos\mos.bin Regional Asia data from Moscow, USSR, 1928-1993 #\data\asia\central\cis\mos\mos.bin NUMBER OF RECORDS: 304 ASCII FILE SIZE: 35568 BINARY FILE SIZE: 30400 SUMMARY: USGS Russia (MOS) catalog, 1950-1961 #\data\asia\central\cis\mosgs\mos.bin Global listing from Moscow, Russia, 1928-1993 #\data\globecat\mos\mos.bin Regional Asia data from Moscow, USSR, 1928-1993 #\data\asia\central\cis\mos\mos.bin 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 5 char 0 1 5 char 0 MOS MOS 304 century_and_year CENTURY_.LST 6 10 short 0 6 7 short 0 1950 1961 304 month MONTH.LST 12 13 short 0 8 9 short 0 1 12 304 day DAY.LST 14 15 short 0 10 11 short 0 1 31 304 hour HOUR.LST 16 17 short 0 12 13 short 0 1 23 293 minute MINUTE.LST 18 19 short 0 14 15 short 0 1 59 298 second SECOND.LST 20 21 short 0 16 17 short 0 1 59 304 time_authority TIME_AUT.CST 25 26 char 2 20 21 char 2 * * 1 latitude LATITUDE.LST 27 33 float 3 22 25 long 3 -80 62 304 longitude LONGITUD.LST 34 41 float 3 26 29 long 3 -150 160 304 depth DEPTH.LST 42 44 short 0 30 31 short 0 3 667 274 flag_depth_control_PDE FLAG_DEP.CST 47 47 char 0 32 32 char 0 A A 8 number_of_Pp_phases NUMBER_O.LST 48 49 short 0 33 34 short 0 0 0 0 Standard_deviation STANDARD.LST 50 53 float 2 35 36 short 2 0 0 0 mb_magn MB_MAGN.LST 54 56 float 1 37 38 short 1 0 0 0 mb_magn_number_observations MB_MAGN_.LST 57 58 short 0 39 40 short 0 0 0 0 ms_local_magn MS_LOCAL.LST 59 61 float 1 41 42 short 1 0 0 0 z_h Z_H.CST 62 62 char 0 43 43 char 0 0 0 0 number_ms_observations NUMBER_M.LST 63 64 short 0 44 45 short 0 0 0 0 magn_one MAGN_ONE.LST 65 68 float 2 46 47 short 2 3 5 277 magn_one_scale MAGN_ON1.CST 69 70 char 0 48 49 char 0 K UK 277 magn_one_authority MAGN_ON2.CST 71 75 char 0 50 54 char 0 MOS YSS 277 magn_two MAGN_TWO.LST 76 79 float 2 55 56 short 2 0 0 0 magn_two_scale MAGN_TW1.CST 80 81 char 0 57 58 char 0 0 0 0 magn_two_authority MAGN_TW2.CST 82 86 char 0 59 63 char 0 0 0 0 Flinn_Engdahl_region FLINN_EN.LST 87 89 short 0 64 65 short 0 219 729 304 number_of_stations_or_quality NUMBER_1.CST 90 92 char 0 66 68 char 0 * N 19 intensity INTENSIT.CST 93 93 char 0 69 69 char 0 . . 304 flag_cultural FLAG_CUL.CST 94 94 char 0 70 70 char 0 . F 304 flag_isoseismal_map FLAG_FLA.CST 95 95 char 0 71 71 char 0 . . 304 flag_fault_plane_solution FLAG_FAU.CST 96 96 char 0 72 72 char 0 . . 304 flag_moment FLAG_MOM.CST 97 97 char 0 73 73 char 0 . . 304 flag_depth_ISC FLAG_DE1.CST 98 98 char 0 74 74 char 0 . . 304 international_data_exchange_event INTERNAT.CST 99 99 char 0 75 75 char 0 . . 304 flag_preferred FLAG_PRE.CST 100 100 char 0 76 76 char 0 . . 304 flag_other FLAG_OTH.CST 101 101 char 0 77 77 char 0 . . 304 flag_diastrophic FLAG_DIA.CST 102 102 char 0 78 78 char 0 . . 304 flag_tsunami FLAG_TSU.CST 103 103 char 0 79 79 char 0 . . 304 flag_seiche FLAG_SEI.CST 104 104 char 0 80 80 char 0 . . 304 flag_volcanism FLAG_VOL.CST 105 105 char 0 81 81 char 0 . . 304 flag_non_tectonic FLAG_NON.CST 106 106 char 0 82 82 char 0 . . 304 flag_infrasonic FLAG_INF.CST 107 107 char 0 83 83 char 0 . . 304 flag_unusual_event FLAG_UNU.CST 108 108 char 0 84 84 char 0 . . 304 distance_radial DISTANCE.CST 109 115 char 0 85 90 char 0 0 0 0 depth_negate DEPTH_NE.LST NOT IN ASCII 91 92 short 0 -667 0 274 year_decimal YEAR_DEC.LST NOT IN ASCII 93 100 double 10 1950.087 1961.972 304 ==================================== 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 mos.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 mos.dat follow ======================================================== MOS 1928 29000N 66500E 0 710 MOS 19280410010318037400N 26100E 0 369 MOS 192805172239100 8200S152500E 0 194 MOS 19281011233228026800N172000E 0 611 MOS 19281011234416026800N172000E 0 611 MOS 19281107183645052500N 95000E 0 326 MOS 192811150232180 2400N133000E 0 196 MOS 192811150737090 2400N133000E 0 196 MOS 1929 28000N130000E 0 238 MOS 1929 47500N 96000E 0 334 . . . . MOS 19930728171642246400N151040E104480MB 22137MS MOS 199307281807491 5540S154080E 33600MB 19354MS 620MLMOS MOS 19930729042440328550S177300W 33530MB 177 MOS 19930729145318842550N142910E 55530MB 22442MS MOS 19930729201700317750N100320W 33520MB 059 MOS 19930730140313120500S179980E550520MB 181 MOS 19930730142551645690N 26590E143490MB 358 MOS 19930730233401527900N 34620E 3490MB 554 MOS 19930731091338519970N174290W 33510MB 61149MS MOS 19930731231319356160N112760E 33500MB 32741MS ==================================== Variable File This file contains statistical information on each of the variables in the data set. The variable file mos.var for this catalog follows ==================================== Input file : mos.bin Input format file: mos.fmt No requested precision, Approximate number of sorting bins = 100 source: 18416 values read minimum: MOS found at record 1 maximum: MOS found at record 1 Summary file: source.cst Histogram data precision: 0, Number of sorting bins: 80 latitude: 18416 values read minimum: -80.000 found at record 72 maximum: 86.920 found at record 17609 Summary file: latitude.lst Histogram data precision: 0, Number of sorting bins: 91 longitude: 18416 values read minimum: -179.990 found at record 9647 maximum: 180.000 found at record 258 Summary file: longitud.lst Histogram data precision: 0, Number of sorting bins: 87 depth_negate: 18416 values read minimum: -700 found at record 660 maximum: 0 found at record 1 Summary file: depth_ne.lst Histogram data precision: 0, Number of sorting bins: 6 mb_magn: 18416 values read minimum: 0.00 found at record 1 maximum: 7.40 found at record 10701 Summary file: mb_magn.lst flag_isoseismal: 18416 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_iso.cst intensity: 18416 values read minimum: found at record 1 maximum: X found at record 1237 Summary file: intensit.cst flags_ngdc: 18416 values read minimum: found at record 1 maximum: found at record 1 Summary file: flags_ng.cst flag_diastrophic: 18416 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_dia.cst flag_tsunami: 18416 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_tsu.cst flag_seiche: 18416 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_sei.cst flag_volcanism: 18416 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_vol.cst flag_non_tectonic: 18416 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_non.cst flag_infrasonic: 18416 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: 87 Flinn_Engdahl_region: 18416 values read minimum: 1 found at record 520 maximum: 729 found at record 72 Summary file: Flinn_En.lst Histogram data precision: 0, Number of sorting bins: 6 ms_local_magn: 18416 values read minimum: 0.0 found at record 1 maximum: 7.9 found at record 18296 Summary file: ms_local.lst z_h: 18416 values read minimum: found at record 1 maximum: found at record 1 Summary file: z_h.cst flag_cultural: 18416 values read minimum: found at record 1 maximum: F found at record 74 Summary file: flag_cul.cst flag_other: 18416 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: 7 magn_other: 18416 values read minimum: 0.00 found at record 1 maximum: 8.25 found at record 3737 Summary file: magn_oth.lst magn_other_authority: 18416 values read minimum: found at record 1 maximum: YSS found at record 1587 Summary file: magn_ot1.cst international_data_exchange_event: 18416 values read minimum: found at record 1 maximum: found at record 1 Summary file: internat.cst flag_depth_control_PDE: 18416 values read minimum: found at record 1 maximum: A found at record 1608 Summary file: flag_dep.cst number_of_stations_or_quality: 18416 values read minimum: found at record 1 maximum: V V found at record 1677 Summary file: number_o.cst time_authority: 18416 values read minimum: found at record 1 maximum: * found at record 1316 Summary file: time_aut.cst Histogram data precision: 0, Number of sorting bins: 7 ml_magn_local: 18416 values read minimum: 0.00 found at record 1 maximum: 8.00 found at record 18296 Summary file: ml_magn_.lst ml_magn_local_scale: 18416 values read minimum: found at record 1 maximum: MS found at record 4183 Summary file: ml_magn1.cst ml_magn_local_source: 18416 values read minimum: found at record 1 maximum: MOS found at record 1583 Summary file: ml_magn2.cst Histogram data precision: 0, Number of sorting bins: 36 century_and_year: 18416 values read minimum: 1928 found at record 1 maximum: 1993 found at record 17408 Summary file: century_.lst Histogram data precision: 0, Number of sorting bins: 13 month: 18416 values read minimum: 0 found at record 1 maximum: 12 found at record 70 Summary file: month.lst Histogram data precision: 0, Number of sorting bins: 32 day: 18416 values read minimum: 0 found at record 1 maximum: 31 found at record 19 Summary file: day.lst Histogram data precision: 0, Number of sorting bins: 24 hour: 18416 values read minimum: 0 found at record 1 maximum: 23 found at record 4 Summary file: hour.lst Histogram data precision: 0, Number of sorting bins: 60 minute: 18416 values read minimum: 0 found at record 1 maximum: 59 found at record 12 Summary file: minute.lst Histogram data precision: 0, Number of sorting bins: 60 second: 18416 values read minimum: 0.0 found at record 1 maximum: 59.9 found at record 5933 Summary file: second.lst Histogram data precision: 0, Number of sorting bins: 86 depth: 18416 values read minimum: 0 found at record 1 maximum: 700 found at record 660 Summary file: depth.lst Histogram data precision: 0, Number of sorting bins: 36 year_decimal: 18416 values read minimum: 1928.0001157724 found at record 1 maximum: 1993.5807331082 found at record 18416 Summary file: year_dec.lst ==================================== The bibliographic file mos.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. ========================================================