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Col ColCol 1. 1*************************************40*************************************80 2. INSTITUTO DE INGENIERIA, UNAM 3. Coordinacion de Instrumentacion Sismica 4. Ciudad Universitaria, Apartado Postal 70-472, Mexico, D.F. 5. Tel. (525)5622-3412, Fax. (525)5616-1514, e-mail: isismica@pumas.iingen.unam.mx 6. ******************************************************************************** 7. MEXICAN STANDARD ACCELERATION FILE 8. FORMAT VERSION : 2.0 9. FILE NAME : COPL9509.141 10. DATE AND TIME OF CREATION : September 25, 1995/14:38:13 11. REF. ACCELERATION CATALOG, SMIS 1995 : NUM. REG. 1355/PAG. 146 12. 13. 14. ================================================================================ 15. INFORMATION ABOUT THE STATION 16. STATION NAME : COPALA 17. STATION CODE : COPL 18. LOCATION OF THE STATION : Federal ElementarySchool 19. : "Otilio Montano" 20. : Copala, Guerrero 21. : 22. : 23. GEOGRAPHIC COORDINATES OF THE STATION : 16.605 LAT. N 24. : 98.974 LONG. W 25. ALTITUDE (meters) : 40 26. SOIL TYPE : Weathered Granite Gneiss 27. : 28. : 29. INSTITUTION IN CHARGE OF ITS OPERATION : Instituto de Ingeniería, UNAM 30. : Coordinacion de Instrumentacion Sismica 31. 32. ================================================================================ 33. INFORMATION ABOUT THE ACCELEROGRAPH 34. ACCELEROGRAPH MODEL : DCA-333 35. SERIAL NUMBER : 201 36. NUMBER OF CHANNELS : 3 37. ORIENTATION C1-C6 (bearing;orientation): /V/N90E/N00E 38. ORIENTATION C7-C12 (bear.;orientation) : 39. SAMPLING SPEED, C1-C6 (samples/sec) : /100/100/100 40. SAMPLING SPEED, C7-C12 (samples/sec) : 41. SENSORS FULL SCALE, C1-C6, (g) : /2/2/2 42. SENSORS FULL SCALE, C7-C12, (g) : 43. SENSORS NAT. FREQUENCY C1-C6, (Hz) : /30.0/30.0/30.0 44. SENSORS NAT. FREQUENCY, C7-C12, (Hz) : 45. SENSORS DAMPING, C1-C6 : /0.71/0.72/0.78 46. SENSORS DAMPING, C7-C12 : 47. SAMPLING INTERVAL, C1-C6, (sec) : /0.01/0.01/0.01 48. SAMPLING INTERVAL, C7-C12, (sec) : 49. TRIGGER THRESHOLD C1-C6, (Gal) : /3/3/3 50. TRIGGER THRESHOLD, C7-C12, (Gal) : 51. PRE-EVENT MEMORY (sec) : 3.62 52. POST-EVENT MEMORY (sec) : 15 53. 54. 55. ================================================================================ 56. INFORMATION ABOUT THE EARTHQUAKE 57. DATE OF THE EARTHQUAKE (GMT) : September 14, 1995 58. EPICENTRAL TIME (GMT) : 14:04:31 59. MAGNITUDE(S) : /Mb=6.5/Ms=7.2/Mw=7.4 60. EPICENTER LOCATION : 16.830 LAT. N 61. : 98.647 LONG. W 62. FOCAL DEPTH (km) : 21 63. INFORMATION SOURCE : Instituto de Geofisica, UNAM 64. : Servicio Sismologico Nacional 65. 66. ================================================================================ 67. INFORMATION ABOUT THIS RECORD 68. TIME OF THE FIRST SAMPLE (GMT) : 14:04:32.25 69. RECORDING TIME PRECISION (sec) : 0.01 70. RECORD DURATION (sec), C1-C6 : /63.15/63.15/63.15 71. RECORD DURATION (sec), C7-C12 : 72. TOTAL No. OF SAMPLES, C1-C6 : /6315/6315/6315 73. TOTAL No. OF SAMPLES, C7-C12 : 74. PEAK ACCELERATION (Gal), C1-C6 : /46.42/68.91/77.04 75. PEAK ACCELERATION,C1-C6, AT SAMPLE No. : /1246/1326/1223 76. PEAK ACCELERATION (Gal), C7-C12 : 77. PEAK ACCELERATION,C7-C12, AT SAMPLE No.: 78. UNITS OF THE DATA : Gal (cm/sec/sec) 79. DECIMATION FACTOR : 1 80. DATA FORMAT (FORTRAN,10 fields/sample) : 3F10.2 81. 82. 83. ================================================================================ 84. QUALITY OF THE ACCELEROGRAM 85. Complete digital record withcorrectabsolute time. 86. 87. 88. ================================================================================ 89. COMMENTS: 90. Thisearthquakeproducedsignificantdamage in the epicentral area. Themost 91. affectedtownswere San Luis Acatlan, Axoyu, Igualapa, and Ometepec onthe Costa 92. Chica. 200 houseswereseverelydamaged. About 50 injuries werereported. 93. Theearthquakewasalsostronglyfelt in Mexico City butproducedlittledamage. 94. 95. 96. 97. 98. 99. 100. 101. 102. 103 104. ================================================================================ 105. ACCELERATION DATA: 106. ---------+---------+---------+---------+---------+---------+---------+---------+ 107. CHANNEL-1 CHANNEL-2 CHANNEL-3 CHANNEL-4 CHANNEL-5 CHANNEL-6 CHANNEL-7 CHANNEL-8 108. V N90E N00E 109. ---------+---------+---------+---------+---------+---------+---------+---------+ 110. 0.06 0.04 0.03 111. 0.06 0.04 0.03 112. -0.42 -0.44 0.03 Mexican Standard Acceleration File, ASA v 2.0
Mexican Seismological Service (SSN) National Network of Broadband Seismological Observatories
Mexican Seismological Service (SSN) Broadband Seismological Stations and Recording Post
Mexican Seismological Service (SSN) Information system on the SSN website
Accelerograph Network IINGEN network accelerographic stations
Accelerograph Network Free field accelerographic station
Mexican Seismic Network Stage 1 Mexican Seismic Network Stage 2 Accelerographic Station Accelerographic Station Epicenter Epicenter S wave P wave S wave P wave Focus Focus