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 antarc.tab for this catalog follows ==================================== DATA SET TITLE: antarc PRINCIPAL INVESTIGATOR: CONTRIBUTING ORGANIZATION: NGDC DATA FILE: antarc.bin NUMBER OF RECORDS: 1597 ASCII FILE SIZE: 130954 BINARY FILE SIZE: 124566 SUMMARY: This is the composite catalog for the region of Antarctic from the NGDC data base. The time covered is: 1917 to 1996 The area covered is all area south of 60 degrees S latitude This is a composite catalog from many sources can contains multiple listings for the same event. 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 BCI WEL 1597 century_and_year CENTURY_.LST 4 8 short 0 57 58 short 0 1917 1996 1597 month MONTH.LST 9 10 short 0 59 60 short 0 1 12 1597 day DAY.LST 11 12 short 0 61 62 short 0 1 31 1597 hour HOUR.LST 13 14 short 0 63 64 short 0 1 23 1539 minute MINUTE.LST 15 16 short 0 65 66 short 0 1 59 1570 second SECOND.LST 17 19 short 1 67 68 short 1 1 59 1570 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 1 667 1338 mb_magn MB_MAGN.LST 36 38 short 2 14 15 short 2 3 6 1012 MB NO HISTOGRAM 39 40 constant 0 NOT IN BINARY flag_isoseismal FLAG_ISO.CST 41 43 char 0 16 18 char 0 FPS FPS 13 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 V V 6 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 V V 6 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 0 149 729 1597 ms_local_magn MS_LOCAL.LST 54 55 short 1 34 35 short 1 3 7 217 MS NO HISTOGRAM 56 57 constant 0 NOT IN BINARY z_h Z_H.CST 58 58 char 0 36 36 char 0 H Z 54 flag_cultural FLAG_CUL.CST 59 59 char 0 37 37 char 0 C F 3 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 D N 473 number_of_stations_or_quality NUMBER_O.CST 69 71 char 0 46 48 char 0 1 456 1282 time_authority TIME_AUT.CST 72 72 char 0 49 49 char 0 * W 295 ml_magn_local ML_MAGN_.LST 73 75 short 2 50 51 short 2 4 7 18 ml_magn_local_scale ML_MAGN1.CST 76 77 char 0 52 53 char 0 DR MW 21 ml_magn_local_authority NO HISTOGRAM 78 80 char 0 NOT IN BINARY latitude LATITUDE.LST NOT IN ASCII 4 7 long 3 -88 -61 1597 longitude LONGITUD.LST NOT IN ASCII 8 11 long 3 -180 180 1594 depth_negate DEPTH_NE.LST NOT IN ASCII 12 13 short 0 -667 0 1338 magn_other MAGN_OTH.LST NOT IN ASCII 39 40 short 2 3 7 338 magn_other_authority MAGN_OT1.CST NOT IN ASCII 41 43 char 0 BDA WEL 338 ml_magn_local_source ML_MAGN2.CST NOT IN ASCII 54 56 char 0 BJI SEA 21 year_decimal YEAR_DEC.LST NOT IN ASCII 71 78 double 10 1917.219 1996.199 1597 ==================================== 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 antarc.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 antarc.dat follow ======================================================== ISS 19170322023634073000S120000W 0 729 ISS 19170715102500065000S 0E 0 414 ISS 19180817102525077000S110000E 0 729 ISS 19190901191225 69 S108 W 692 ISS 19190901191225069000S108000W 0 692 ISS 19200520043635 65 S 39 W 156 ISS 19200520043635065000S 39000W 0 156 ISS 19201015140737 755 S150 E 729 ISS 19201015140737075500S150000E 0 729 ISS 19210616090452 65 S E 414 . . . . PDE 19950607200256863507S170997E 1043 MB 70247MS G 7? PDE 19950615185810760269S 31203W 1050 MB 150 570HRV G 50 PDE 19950615185838160197S 31697W 1052 MB 15049MS G 34* PDE 19950615192352960360S 31205W 1051 MB 15053MS G 29* PDE 19950615192537060430S 31644W 1052 MB 150 G 10* PDE 19950621152851761673S154766E 1058 MB 70267MS 670GS G230 670MWHRV PDE 19950622205919963197S171007E 1043 MB 70241MS G 13? PDE 19950722223237262559S159955W 1045 MB 69146MS G 14* SEA 19960307060922661180S116730E 0 437 5W000DRSEA SEA 19960313211113762599S 6544E 0 414 4W000DRSEA ==================================== Variable File This file contains statistical information on each of the variables in the data set. The variable file antarc.var for this catalog follows ==================================== Input file : antarc.bin Input format file: antarc.fmt No requested precision, Approximate number of sorting bins = 100 source: 1597 values read minimum: BCI found at record 103 maximum: WEL found at record 126 Summary file: source.cst Histogram data precision: 0, Number of sorting bins: 20 latitude: 1597 values read minimum: -88.000 found at record 180 maximum: -60.023 found at record 1445 Summary file: latitude.lst Histogram data precision: 0, Number of sorting bins: 96 longitude: 1597 values read minimum: -179.993 found at record 1398 maximum: 180.000 found at record 22 Summary file: longitud.lst Histogram data precision: 0, Number of sorting bins: 79 depth_negate: 1597 values read minimum: -667 found at record 112 maximum: 0 found at record 1 Summary file: depth_ne.lst Histogram data precision: 0, Number of sorting bins: 5 mb_magn: 1597 values read minimum: 0.00 found at record 1 maximum: 6.50 found at record 1111 Summary file: mb_magn.lst flag_isoseismal: 1597 values read minimum: found at record 1 maximum: FPS found at record 1006 Summary file: flag_iso.cst intensity: 1597 values read minimum: found at record 1 maximum: found at record 1 Summary file: intensit.cst flags_ngdc: 1597 values read minimum: found at record 1 maximum: V found at record 513 Summary file: flags_ng.cst flag_diastrophic: 1597 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_dia.cst flag_tsunami: 1597 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_tsu.cst flag_seiche: 1597 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_sei.cst flag_volcanism: 1597 values read minimum: found at record 1 maximum: V found at record 513 Summary file: flag_vol.cst flag_non_tectonic: 1597 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_non.cst flag_infrasonic: 1597 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: 16 Flinn_Engdahl_region: 1597 values read minimum: 149 found at record 526 maximum: 729 found at record 1 Summary file: Flinn_En.lst Histogram data precision: 0, Number of sorting bins: 6 ms_local_magn: 1597 values read minimum: 0.0 found at record 1 maximum: 7.0 found at record 600 Summary file: ms_local.lst z_h: 1597 values read minimum: found at record 1 maximum: Z found at record 806 Summary file: z_h.cst flag_cultural: 1597 values read minimum: found at record 1 maximum: F found at record 600 Summary file: flag_cul.cst flag_other: 1597 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: 1597 values read minimum: 0.00 found at record 1 maximum: 7.50 found at record 671 Summary file: magn_oth.lst magn_other_authority: 1597 values read minimum: found at record 1 maximum: WEL found at record 106 Summary file: magn_ot1.cst international_data_exchange_event: 1597 values read minimum: found at record 1 maximum: found at record 1 Summary file: internat.cst flag_depth_control_PDE: 1597 values read minimum: found at record 1 maximum: N found at record 199 Summary file: flag_dep.cst number_of_stations_or_quality: 1597 values read minimum: found at record 1 maximum: 456 found at record 1112 Summary file: number_o.cst time_authority: 1597 values read minimum: found at record 1 maximum: W found at record 1562 Summary file: time_aut.cst Histogram data precision: 0, Number of sorting bins: 5 ml_magn_local: 1597 values read minimum: 0.00 found at record 1 maximum: 7.10 found at record 1257 Summary file: ml_magn_.lst ml_magn_local_scale: 1597 values read minimum: found at record 1 maximum: MW found at record 1577 Summary file: ml_magn1.cst ml_magn_local_source: 1597 values read minimum: found at record 1 maximum: SEA found at record 1562 Summary file: ml_magn2.cst Histogram data precision: 0, Number of sorting bins: 68 century_and_year: 1597 values read minimum: 1917 found at record 1 maximum: 1996 found at record 1596 Summary file: century_.lst Histogram data precision: 0, Number of sorting bins: 12 month: 1597 values read minimum: 1 found at record 12 maximum: 12 found at record 24 Summary file: month.lst Histogram data precision: 0, Number of sorting bins: 31 day: 1597 values read minimum: 1 found at record 4 maximum: 31 found at record 123 Summary file: day.lst Histogram data precision: 0, Number of sorting bins: 24 hour: 1597 values read minimum: 0 found at record 58 maximum: 23 found at record 86 Summary file: hour.lst Histogram data precision: 0, Number of sorting bins: 60 minute: 1597 values read minimum: 0 found at record 156 maximum: 59 found at record 114 Summary file: minute.lst Histogram data precision: 0, Number of sorting bins: 60 second: 1597 values read minimum: 0.0 found at record 2 maximum: 59.8 found at record 1446 Summary file: second.lst Histogram data precision: 0, Number of sorting bins: 79 depth: 1597 values read minimum: 0 found at record 1 maximum: 667 found at record 112 Summary file: depth.lst Histogram data precision: 0, Number of sorting bins: 68 year_decimal: 1597 values read minimum: 1917.2194759640 found at record 1 maximum: 1996.1991333264 found at record 1597 Summary file: year_dec.lst ======================================================== Additional Documentation Any other files contributed to or generated by NGDC as documentation for the data base follows. ========================================================