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 pre.tab for this catalog follows ==================================== DATA SET TITLE: pre PRINCIPAL INVESTIGATOR: CONTRIBUTING ORGANIZATION: PRE LATITUDE: 25.752 S LONGITUDE: 28.18733 E PRE Elevation: 1333.0 LOCATION and NAME: Pretoria DATA FILE: pre.bin #\data\africa\south\pre\pre.bin NUMBER OF RECORDS: 2312 ASCII FILE SIZE: 189584 BINARY FILE SIZE: 180336 SUMMARY: PRE Pretoria, South Africa. Regional data from Pretoria, South Africa, 1950-1991 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 PRE PRE 2312 century_and_year CENTURY_.LST 4 8 short 0 57 58 short 0 1950 1991 2312 month MONTH.LST 9 10 short 0 59 60 short 0 1 12 2312 day DAY.LST 11 12 short 0 61 62 short 0 1 31 2312 hour HOUR.LST 13 14 short 0 63 64 short 0 1 23 2237 minute MINUTE.LST 15 16 short 0 65 66 short 0 1 59 2265 second SECOND.LST 17 19 short 1 67 68 short 1 1 59 2135 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 1 30 2310 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 0 0 0 flags_ngdc FLAGS_NG.CST 45 50 char 0 20 25 char 0 0 0 0 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 0 0 0 flag_seiche FLAG_SEI.CST 47 47 char 0 28 28 char 0 0 0 0 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 0 409 587 2312 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 0 0 0 flag_other FLAG_OTH.CST 60 60 char 0 38 38 char 0 0 0 0 magn_other MAGN_OTH.LST 61 63 short 2 39 40 short 2 2 6 62 magn_other_authority MAGN_OT1.CST 64 66 char 0 41 43 char 0 PAS PRE 62 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 1 22 990 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 1 5 2246 ml_magn_local_scale ML_MAGN1.CST 76 77 char 0 52 53 char 0 ML ML 2247 ml_magn_local_source ML_MAGN2.CST 78 80 char 0 54 56 char 0 PRE PRE 2247 latitude LATITUDE.LST NOT IN ASCII 4 7 long 3 -34 -12 2312 longitude LONGITUD.LST NOT IN ASCII 8 11 long 3 9 41 2312 depth_negate DEPTH_NE.LST NOT IN ASCII 12 13 short 0 -30 0 2310 year_decimal YEAR_DEC.LST NOT IN ASCII 71 78 double 10 1950.356 1991.160 2312 ==================================== 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 pre.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 pre.dat follow ======================================================== PRE 19500510233921017000S 41000E 0 582 650PAS PRE 19510319092932020333S 33800E 0 581 PRE 19710814114845325100S 30900E 30 584 340PRE PRE 19710825025128825200S 30900E 30 584 330PRE PRE 19710829221755225000S 25700E 30 579 320PRE PRE 19710927184531926600S 27500E 1 584 480PRE PRE 19711106112116021400S 37800E 10 582 340PRE PRE 19711219084248926500S 27800E 1 584 310PRE PRE 19770704021347526160S 27790E 2 584 322MLPRE PRE 19770711055626526420S 27320E 2 584 307MLPRE . . . . PRE 19910216181455127940S 26730E 2 584 280MLPRE PRE 19910218011508226330S 27690E 2 584 250MLPRE PRE 19910219175931426400S 27530E 2 584 250MLPRE PRE 19910221183158026340S 27490E 2 584 310MLPRE PRE 19910221214231726340S 27560E 2 584 290MLPRE PRE 19910222173416426920S 26810E 2 584 240MLPRE PRE 19910227030032526430S 27430E 2 584 260MLPRE PRE 19910227110652726870S 26810E 2 584 310MLPRE PRE 19910227154409726930S 26780E 2 584 320MLPRE PRE 19910228180343028070S 26870E 2 584 230MLPRE ==================================== Variable File This file contains statistical information on each of the variables in the data set. The variable file pre.var for this catalog follows ==================================== Input file : pre.bin Input format file: pre.fmt No requested precision, Approximate number of sorting bins = 100 source: 2312 values read minimum: PRE found at record 1 maximum: PRE found at record 1 Summary file: source.cst Histogram data precision: 0, Number of sorting bins: 20 latitude: 2312 values read minimum: -33.990 found at record 1904 maximum: -11.570 found at record 1901 Summary file: latitude.lst Histogram data precision: 0, Number of sorting bins: 25 longitude: 2312 values read minimum: 9.730 found at record 1385 maximum: 41.000 found at record 1 Summary file: longitud.lst Histogram data precision: 0, Number of sorting bins: 7 depth_negate: 2312 values read minimum: -30 found at record 3 maximum: 0 found at record 1 Summary file: depth_ne.lst Histogram data precision: 0, Number of sorting bins: 1 mb_magn: 2312 values read minimum: 0.00 found at record 1 maximum: 0.00 found at record 1 Summary file: mb_magn.lst flag_isoseismal: 2312 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_iso.cst intensity: 2312 values read minimum: found at record 1 maximum: found at record 1 Summary file: intensit.cst flags_ngdc: 2312 values read minimum: found at record 1 maximum: found at record 1 Summary file: flags_ng.cst flag_diastrophic: 2312 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_dia.cst flag_tsunami: 2312 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_tsu.cst flag_seiche: 2312 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_sei.cst flag_volcanism: 2312 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_vol.cst flag_non_tectonic: 2312 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_non.cst flag_infrasonic: 2312 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: 12 Flinn_Engdahl_region: 2312 values read minimum: 409 found at record 1385 maximum: 587 found at record 1099 Summary file: Flinn_En.lst Histogram data precision: 0, Number of sorting bins: 1 ms_local_magn: 2312 values read minimum: 0.0 found at record 1 maximum: 0.0 found at record 1 Summary file: ms_local.lst z_h: 2312 values read minimum: found at record 1 maximum: found at record 1 Summary file: z_h.cst flag_cultural: 2312 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_cul.cst flag_other: 2312 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: 2312 values read minimum: 0.00 found at record 2 maximum: 6.50 found at record 1 Summary file: magn_oth.lst magn_other_authority: 2312 values read minimum: found at record 2 maximum: PRE found at record 3 Summary file: magn_ot1.cst international_data_exchange_event: 2312 values read minimum: found at record 1 maximum: found at record 1 Summary file: internat.cst flag_depth_control_PDE: 2312 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_dep.cst number_of_stations_or_quality: 2312 values read minimum: found at record 1 maximum: 22 found at record 824 Summary file: number_o.cst time_authority: 2312 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: 6 ml_magn_local: 2312 values read minimum: 0.00 found at record 1 maximum: 5.40 found at record 1385 Summary file: ml_magn_.lst ml_magn_local_scale: 2312 values read minimum: found at record 1 maximum: ML found at record 9 Summary file: ml_magn1.cst ml_magn_local_source: 2312 values read minimum: found at record 1 maximum: PRE found at record 9 Summary file: ml_magn2.cst Histogram data precision: 0, Number of sorting bins: 17 century_and_year: 2312 values read minimum: 1950 found at record 1 maximum: 1991 found at record 2256 Summary file: century_.lst Histogram data precision: 0, Number of sorting bins: 12 month: 2312 values read minimum: 1 found at record 29 maximum: 12 found at record 8 Summary file: month.lst Histogram data precision: 0, Number of sorting bins: 31 day: 2312 values read minimum: 1 found at record 41 maximum: 31 found at record 14 Summary file: day.lst Histogram data precision: 0, Number of sorting bins: 24 hour: 2312 values read minimum: 0 found at record 27 maximum: 23 found at record 1 Summary file: hour.lst Histogram data precision: 0, Number of sorting bins: 60 minute: 2312 values read minimum: 0 found at record 77 maximum: 59 found at record 66 Summary file: minute.lst Histogram data precision: 0, Number of sorting bins: 60 second: 2312 values read minimum: 0.0 found at record 537 maximum: 59.9 found at record 1981 Summary file: second.lst Histogram data precision: 0, Number of sorting bins: 7 depth: 2312 values read minimum: 0 found at record 1 maximum: 30 found at record 3 Summary file: depth.lst Histogram data precision: 0, Number of sorting bins: 17 year_decimal: 2312 values read minimum: 1950.3561250951 found at record 1 maximum: 1991.1609659754 found at record 2312 Summary file: year_dec.lst ==================================== The bibliographic file pre.bib for this catalog follows ==================================== This is the NGDC Bibliography for region of South Africa ---, Compiler. Résumé Annuel Des Observations Instrumentales Et Des Tremblements De Terre Ressentis Au Maroc En 1968. Xerox Copy, Report. Rabat: Institut Scientifique Cherifien, Service De Physique Du Globe, 1969. Royaume Du Maroc. ---. A Catalogue of Felt Earthquakes in Kenya, 1892 - 1969. Kenya: Seismology Unit, Geology Department, University of Nairobi, Kenya, July 1971. A Catalogue of Earthquakes in the Lake Kariba Area: 1959 to 1968 (Rhodesia. Epicentres of Local Earthquakes Recorded at Bulawayo, Broken Hill and Chileka: July 1965 to June 1966. Lambert Conformal Conic Projction. 1967. Fernandez, L. M. Ph. D. Catalogue of Earthquakes in Southern Africa and Surrounding Oceans for 1979, 1980, 1981, 1982, 1983. Republic of South Africa Pretoria: Department of Mineral and Energy Affairs, Geological Survey, 1983. Finsen, W. S. "The Statistics of Witwatersrand Earth Tremors, 1938.5 to 1949.0, and The Geographical Distribution of Some South African Earthquakes." Union Observatory Volume 5, Part 10.Circular No.110, 1950, July (1950): Pages 445-56, Catalogue, Pages 459-72. Gorshkov, G. P. "The Seismicity of Africa." Review of Natural Resources (1963): 103-51. Heck, N. H. and Davis R. M. Jr. "A List of Earthquakes Published in 1688." Bulletin of the Seismological Society of America Vol. 36.No. 4 (1946): 363-72. Herrinck, P. Dr. Sc. Séismicité Du Congo Belge., Compilation Des Séismes Observés Aux Stations Climatologiques Entre 1909 Et 1954. Brussel: Académie royale des Sciences coloniales, Chef de la Section géographique du Service météorologique du Congo belge et du Ruand-Urundi, 1959. Institut Scientifique Cherifien, Service De Physique Du Globe. "Les Tremblements De Terre R Essentis En 1965 Et 1966 Au Maroc." Bulletin Macroseismique Du Maroc Pour 1965 Et 1966 (1967): Pages 1-12. Loupekine, I. S. A Catalogue of Felt Earthquakes in Kenya, 1892 - 1969. Nairobi, Kenya: University of Nairobi, 1971. Observatoire Geophysique Averroes, Section Seismologie Berrechid Maroc. "Bulletin Macroseismique De L'Observatoire Averroes." Royaume Du Maroc, Institut Scientifique, Service De Physique Du Globe Et De Meteorologie. (1963): Pages 1-5. Wery, A. "Seismic Observations and Meteorology of Ruanda." Communications of the Royal Observatory of Belgium No. 133.Series No. 43: 1-12. ======================================================== Additional Documentation Any other files contributed to or generated by NGDC as documentation for the data base follows. ========================================================