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 ubc.tab for this catalog follows ==================================== DATA SET TITLE: ubc PRINCIPAL INVESTIGATOR: CONTRIBUTING ORGANIZATION: UBC F LATITUDE: 0 LONGITUDE: 0 UBC F Elevation: LOCATION and NAME: University of British Columbia DATA FILE: ubc.bin #\data\canada\western\ubc\ubc.bin NUMBER OF RECORDS: 11 ASCII FILE SIZE: 902 BINARY FILE SIZE: 858 SUMMARY: UBC University of British Columbia, Vancouver, British Columbia, Canada Data from University of British Columbia 1973 - 1974 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 UBC UBC 11 century_and_year CENTURY_.LST 4 8 short 0 57 58 short 0 1973 1974 11 month MONTH.LST 9 10 short 0 59 60 short 0 1 10 11 day DAY.LST 11 12 short 0 61 62 short 0 3 30 11 hour HOUR.LST 13 14 short 0 63 64 short 0 2 21 11 minute MINUTE.LST 15 16 short 0 65 66 short 0 2 56 11 second SECOND.LST 17 19 short 1 67 68 short 1 11 50 11 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 12 16 10 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 23 24 11 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 0 0 0 magn_other_authority MAGN_OT1.CST 64 66 char 0 41 43 char 0 0 0 0 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 5 6 6 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_source ML_MAGN2.CST 78 80 char 0 54 56 char 0 0 0 0 latitude LATITUDE.LST NOT IN ASCII 4 7 long 3 52 52 11 longitude LONGITUD.LST NOT IN ASCII 8 11 long 3 -118 -118 11 depth_negate DEPTH_NE.LST NOT IN ASCII 12 13 short 0 -16 0 10 year_decimal YEAR_DEC.LST NOT IN ASCII 71 78 double 10 1973.170 1974.609 11 ==================================== 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 ubc.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 ubc.dat follow ======================================================== UBC 19730304024731 5208 N118 W 16 023 5 UBC 19730304031543 5208 N118 W 15 023 5 UBC 19730304050242 5209 N118 W 15 023 5 UBC 19730322212150 5207 N118 W 15 023 5 UBC 19730330165628 5215 N1179 W 024 5 UBC 19731024062443 5211 N11796 W 13 024 6 UBC 19740106144111 5211 N11796 W 15 024 UBC 19740106163327 5211 N11796 W 14 024 UBC 19740106173513 521 N11798 W 14 024 UBC 19740503132713 521 N11797 W 14 024 . . . . UBC 19730304031543 5208 N118 W 15 023 5 UBC 19730304050242 5209 N118 W 15 023 5 UBC 19730322212150 5207 N118 W 15 023 5 UBC 19730330165628 5215 N1179 W 024 5 UBC 19731024062443 5211 N11796 W 13 024 6 UBC 19740106144111 5211 N11796 W 15 024 UBC 19740106163327 5211 N11796 W 14 024 UBC 19740106173513 521 N11798 W 14 024 UBC 19740503132713 521 N11797 W 14 024 UBC 19740811071826 5217 N11784 W 12 024 ==================================== Variable File This file contains statistical information on each of the variables in the data set. The variable file ubc.var for this catalog follows ==================================== Input file : ubc.bin Input format file: ubc.fmt No requested precision, Approximate number of sorting bins = 100 source: 11 values read minimum: UBC found at record 1 maximum: UBC found at record 1 Summary file: source.cst Histogram data precision: 0, Number of sorting bins: 1 latitude: 11 values read minimum: 52.070 found at record 4 maximum: 52.170 found at record 11 Summary file: latitude.lst Histogram data precision: 0, Number of sorting bins: 1 longitude: 11 values read minimum: -118.000 found at record 1 maximum: -117.840 found at record 11 Summary file: longitud.lst Histogram data precision: 0, Number of sorting bins: 6 depth_negate: 11 values read minimum: -16 found at record 1 maximum: 0 found at record 5 Summary file: depth_ne.lst Histogram data precision: 0, Number of sorting bins: 1 mb_magn: 11 values read minimum: 0.00 found at record 1 maximum: 0.00 found at record 1 Summary file: mb_magn.lst flag_isoseismal: 11 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_iso.cst intensity: 11 values read minimum: found at record 1 maximum: found at record 1 Summary file: intensit.cst flags_ngdc: 11 values read minimum: found at record 1 maximum: found at record 1 Summary file: flags_ng.cst flag_diastrophic: 11 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_dia.cst flag_tsunami: 11 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_tsu.cst flag_seiche: 11 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_sei.cst flag_volcanism: 11 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_vol.cst flag_non_tectonic: 11 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_non.cst flag_infrasonic: 11 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: 2 Flinn_Engdahl_region: 11 values read minimum: 23 found at record 1 maximum: 24 found at record 5 Summary file: Flinn_En.lst Histogram data precision: 0, Number of sorting bins: 1 ms_local_magn: 11 values read minimum: 0.0 found at record 1 maximum: 0.0 found at record 1 Summary file: ms_local.lst z_h: 11 values read minimum: found at record 1 maximum: found at record 1 Summary file: z_h.cst flag_cultural: 11 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_cul.cst flag_other: 11 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: 1 magn_other: 11 values read minimum: 0.00 found at record 1 maximum: 0.00 found at record 1 Summary file: magn_oth.lst magn_other_authority: 11 values read minimum: found at record 1 maximum: found at record 1 Summary file: magn_ot1.cst international_data_exchange_event: 11 values read minimum: found at record 1 maximum: found at record 1 Summary file: internat.cst flag_depth_control_PDE: 11 values read minimum: found at record 1 maximum: found at record 1 Summary file: flag_dep.cst number_of_stations_or_quality: 11 values read minimum: found at record 7 maximum: 6 found at record 6 Summary file: number_o.cst time_authority: 11 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: 11 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: 11 values read minimum: found at record 1 maximum: found at record 1 Summary file: ml_magn1.cst ml_magn_local_source: 11 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: 2 century_and_year: 11 values read minimum: 1973 found at record 1 maximum: 1974 found at record 7 Summary file: century_.lst Histogram data precision: 0, Number of sorting bins: 5 month: 11 values read minimum: 1 found at record 7 maximum: 10 found at record 6 Summary file: month.lst Histogram data precision: 0, Number of sorting bins: 7 day: 11 values read minimum: 3 found at record 10 maximum: 30 found at record 5 Summary file: day.lst Histogram data precision: 0, Number of sorting bins: 10 hour: 11 values read minimum: 2 found at record 1 maximum: 21 found at record 4 Summary file: hour.lst Histogram data precision: 0, Number of sorting bins: 11 minute: 11 values read minimum: 2 found at record 3 maximum: 56 found at record 5 Summary file: minute.lst Histogram data precision: 0, Number of sorting bins: 9 second: 11 values read minimum: 11.0 found at record 7 maximum: 50.0 found at record 4 Summary file: second.lst Histogram data precision: 0, Number of sorting bins: 6 depth: 11 values read minimum: 0 found at record 5 maximum: 16 found at record 1 Summary file: depth.lst Histogram data precision: 0, Number of sorting bins: 2 year_decimal: 11 values read minimum: 1973.1701817288 found at record 1 maximum: 1974.6090533359 found at record 11 Summary file: year_dec.lst ==================================== The bibliographic file ubc.bib for this catalog follows ==================================== This is the NGDC Bibliography for the Canada Region "A Chapter on Earthquakes." The Canadian Naturalist and Geologist Vol. 1.May (1856): 1-5. ---, Author. Earthquakes of Eastern Canada and Adjacent Areas 1534-1927. Soft Cover Booklet, Report. Volume XXVI. Ottawa, Canada: Department of Mines and Technical Surveys, Observatories Branch, 1962. ---. "Location of Epicentres for 1912." The Journal of The Royal Astoonomical Society of Canada Vol. 7.No. 3. (1913): 229-41. ---. "Location of Epicentres for 1913." The Journal of the Royal Astronomical Society of Canada May-June (1914): 160-71. ---. "Location of Epicentres for 1914 and 1915." The Journal of the Royal Astronomical Society of Canada July - August (1916): 302-13. ---. "Loction of Epicentres for 1914." The Journal of the Royal Astronomical Society of Canada (1914): 215-23. ---. Canadian Earthquakes--1978. Ottawa, Canada: Seismological Service of Canada, 1979. Doxsee, W. W. "The Location of Epicenters, 1926-1927." Publications of the Dominion Observatory of Ottawa Vol. 7.No. 5 (1930): 191-259. Drysdale, J. A., AuthorsSoft Cover Book. (Seismological Series) Série Séismologique (Number 95) Numéro 95. Canada: Energy, Mines and Resources Canada, 1987. (Paper 87-19) Etude 87-19. Hodgson, E. A. "The Seismicity of the Arctic." Journal of the Royal Astronomical Society of Canada Volume XXIV, No. 5.May-June, 1930 (1930): Pages 201-10. Hodgson, J. H. "There Are Earthquake Risks in Canada." Dominion Observatory, Department of Mines and Technical Surveys, Ottawa, Ontario, Reprinted From "Canadian Consulting Engineer" Volume 7.No. 7, (1965): Pages 42-51. Horner, R. B. Stevens A. E. and Wetmiller R. J. Canadian Earthquakes--1977. Ottawa, Canada: Seismological Service of Canada, 1979. Keith, A. Hodgson E. A. de Smitt V. P. et. al. "The Grandbanks Earthquake of 1929." Nature, Dominion Observatory, Western Union Telegraph Company, Eastern Section of the Seismological Society of America, Et. Al. (1929-1964): Various. Klotz, O. "Location of Epicentres for 1911." The Journal of the Royal Astronomical Society of Canada Vol. 6.No. 1 (1912): 15-23. Linehan, D. Compilation of Earthquakes in Northeastern United States and Eastern Canada 1534 - 1957. Weston Geophysical Research Inc. 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. Milne, W. G. "Seismic Activity in Canada, West of the 113th Meridian 1841 - 1951." Publications of the Dominion Observatory Vol. 18.No. 7 (1964): 119-46. Milne, W. G. "Seismic Activity in Canada, West of the 113th Meridian 1841-1951." Publications of the Dominion Observatory Ottawa Volume IVIII.No. 7 (1956): Pages 119-46. Milne, W. G. Rogers G. C. Riddihough R. P. McMechan G. A. and Hyndman R. D. "Seismicity of Western Canada." Can. J. Earth Sci. (Canadian Journal of Earth Sciences) Volume 15 (1978): Pages 1170-91. Milne, W. G. and Lucas K. A. "Seismic Activity in Western Canada, 1955 to 1959 Inclusive." Publications of the Dominion Observatory (1961): Page 3-23. 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. Roberts, E. B., Captain, C&GS, Chief, Geophysics Division. "Earthquakes in the Vicinity of Iceland, Greenland and Baffin Island From 1933 to the Present." Xerox copy, datafileRoberts, E.B., 1959. Smith, W. E. T.W. E. T. Smith. 1966-2 ed. Seismological Series of the Dominion Observatory . Ottawa, Canada: Department of Energy, Mines and Resources, Observatories Branch, 1967. Stevens, A. E. Milne W. G. Horner R. B. Wetmiller R. J. Leblanc G. and McMechan G. A. Canadian Earthquakes--1968. Ottawa, Canada: Seismological Service of Canada, 1976. Wetmiller, R. J. "An Earthquake Swarm on the Queen Charlotte Islands Fracture Zone." Bulletin of the Seismological Society of America Vol. 61.No. 6 (1971): 1489-505. Wetmiller, R. J. Canadian Earthquakes--1974. Ottawa, Canada: Seismological Service of Canada, 1976. Wetmiller, R. J. Stevens A. E. and Horner R. B. Canadian Earthquakes--1979. Ottawa, Canada: Seismological Service of Canada, 1981. Wetmiller, R. J. and Horner R. B. Canadian Earthquakes--1976. Ottawa, Canada: Seismological Service of Canada, 1978. ======================================================== Additional Documentation Any other files contributed to or generated by NGDC as documentation for the data base follows. ======================================================== Following is an abbreviated summary of the format for the ASCII version of this file - *.dat. For a more extensive version of this format, please see the file: formtap.txt in /data/supplmnt directory Line Position Field Comments 1-3 Data source Source from which all or most of the data were obtained. 4 B.C. data indicator Minus sign indicates pre- Christian era. 4-12 Date (Universal Positions 4-8 year, 9-10 month, and 11-12 day Time--UT). 13-19 Origin Time Computed, or observed if (Universal Time--UT) controlled explosion with shot timed. Positions 13-14 hour, 15-16 minute, and 17-19 second. Implied decimal between positions 18 and 19. 20-24 Geographic latitude Usually given to three (decimal degrees) decimal places, although this degree of accuracy is not necessarily applicable. Implied decimal between positions 21 and 22. 25 N/S North or South latitude. 26-31 Geographic longitude Usually given to three (decimal degrees) decimal places. Implied decimal between positions 28 and 29. 32 E/W East or West longitude. 33-35 Focal depth (km) See also position 68. 36-38 Body-wave (Mb) Implied decimal between average value positions 36 and 37. Value as determined by *PDE program. 39-40 MB If magnitude in 36-38 is given. 41-43 Isoseismal map, Three-letter abbreviation fault plane indicating the publication solution, or both of an isoseismal (intensity) map in the following publications: USE, United States Earthquakes; *PDE, Preliminary Deter- mination of Epicenters; WEL, New Zealand Seismologoy Report, Wellington, N.Z.; BSS, Bulleting of the Seismological Society of America; ZUR, Zurich, Switzerland; NTR, Nature Magazine. FPS indicates a fault- plane solution was computed. BOT means that both a fault plane solution and an isoseismal map were produced by the U.S. Geological Survey. 44 Maximum intensity Modified Mercalli Scale or converted to MM Scale: 1-9 = I-IX X = X E = XI T = XII See Appendix 5. 45-50 Associated Phenomena 45 Diastrophism code F = Surface faulting. U = Uplift/subsidence. D = Faulting and uplift/ subsidence. 46 Tsunami code T = Tsunami generated. Q = Possible Tsunami. 47 Seiche code S = Seiche. Q = Possible Seiche. 48 Volcanism Code V = Earthquake associated with volcanism. 49 Nontectonic code R = Rockburst. C = Coal bump or rock- burst in coal mine. M = Meteoritic source. E = Explosion -- accidental, con- trolled or suspected. I = Collapse. L = Lights or other such visual phenomena seen. 50 Waves generated code T = T-wave. A = Acoustic Wave. G = Gravity wave. B = Both A and G. 51-53 Flinn-Engdahl geo- As described by Flinn graphic region no. and others (1974). See appendix 6. 54-55 Surface wave (Ms) Implied decimal between avergae value positions 54 and 55. Value determined by PDE program. (IASPEI formula used). 56-57 MS If magnitude in 54-55 is given. 58 Component Z or H Z = Ms computed from component long- period vertical. H = Ms computed from long-period horizontal component. 59 Cultural Effects C, D, F or H in position 59 indicates reported casualties, damage, felt information or earthquake heard, respectively. The notations listed here provide a brief summary of the earthquake effects on populations and buildings. Casualty, damage, or felt reports associated with a particular earthquake do not imply that the effects were noted at the epi- central position. Especially with offshore earthquakes, the maximum intensity may be reported at some distance from the source of the shock. An "F" in this position (felt but no damage reported) having no accompanying intensity (position 44) is likely associated with an intensity of I - III on the Modified Mercalli Scale; however, tha actual intensity may be higher. 60 Unusual Events L = Liquefaction. G = Geyser/fumerol. S = Landsliding, avalanche. B = Sand Blows. C = Ground cracking, not associated with faulting. V = Visual phenomena or lights. O = Olfactory phenomena. M = More than one of the above. 61-63 Other Magnitude Value obtained from several sources; unspec- ified magnitude type but generally Ms (implied decimal between positions 61 and 62). Fractions have been converted to decimal numbers, or encoded as follows: 6 - 6 1/4 = 6.13 6 1/4 = 6.25 6 1/4 - 6 1/2 = 6.38 6 1/2 = 6.50 6 1/2 - 6 3/4 = 6.63 6 3/4 = 6.75 6 3/4 - 7 = 6.88 For any other range, median values are listed. 64-66 Authority for See source codes in magnitude in appendix 4. positions 61-63 67 Special event X = International Date designator Exchange (IDE) earthquake. 68 Depth control A = Assigned. Designator D = Restrained depth based on 2 or more reported pP's identified as such. G = Depth restrained by Geophysicist. N = Held at 33 km (Normal Depth) where data not sensitive to depth for a shallow-focus. S = Depth control aided by use of S-phase data. * = Less well-constrained free-depth solution; 90% confidence it lies within 8.5 and 16 km (used since January 1985). ? = Poorly constrained free depth solution (used since January 1985). 69-71 Number of stations/ Number of P and/or P' Quality Indicators arrivals used in hypo- center solution. Quality Indicators are as listed below: Source Style and Indicators _____________________________________________________________________________ Source Style and Indicators Single-letter designator in position 69 72 Authority for time Blank = Authority same coordinates/other as source (positions quality indicators 1-3). 73-75 Local Magnitude Implied decimal between positions 73 and 74. 76-77 Magnitude scale used If magnitude in 73-75 is given. Generally ML; USGS will use MB. ML = Local magnitude MB = Body-wave magnitude CL = Coda-length magnitude MS = Surface-wave magnitude DR = Duration Magnitude NU = Nuttli Magnitude MW = Moment magnitude (Abe, 1983, 1984) MR = Rautian magnitude (Kondorskaya and Shebalin, 1982) LH = Magnitude Mlh (Kondorskaya and Shebalin, 1982) LG = Lg body-wave magnitude (Nuttli, 1973) SL = Magnitude from Stover and others, 1984 SH = Magnitude from Stover and others, 1984 SA = Magnitude from Stover and others, 1984 SU = Magnitude of unknown origin from Stover and others, 1984 K = Russian Energy class magnitude MC = Reported magnitude of unknown origin MG = Reported magnitude of unknown origin 78-80 Authority for value in 73-75. ========================================================================= END OF DOCUMENTATION FILE =========================================================================