Advertisement

The Seismic Alert System in Mexico City and the School Prevention Program

Chapter
  • 51 Downloads

Abstract

The Seismic Alert System (SAS) is a public service developed with the sponsorship of the City Government Authorities, with the aim to mitigate seismic disasters. Since August, 1991, after 84 months of continuous operation, the SAS has been able to detect 681 seismic events in the Guerrero Coast; 12 of them so strong as to trigger general alerts in Mexico City, 33 restricted, and one false general alert. The warning ranges strong or restricted correspond to seismic magnitude forecasted great than 6, or great than 5. During the “Copala” M7.3 earthquake, on September 14, 1995 the SAS was activated and issued a general warning signal in Mexico City, 72 seconds prior to the first arrival of “S” ground motion. This earthquake warning reached an estimated population of more than 4 million citizens. The response of children in schools was massive due to the application of an earthquake hazard reduction program. The Copala earthquake helped us to identify strengths and weaknesses of societal response to the earthquake early warning signal. The long-term plan of hazard mitigation of the National Ministry of Public Education, Secretaria de Educacion Publica (SEP), has created an earthquake awareness in the children of various school levels. Even though the children did not suffered the disastrous consequences of the 1985 earthquake, they are today more aware than the average person who lived through that disastrous event and who is still not trained.

Keywords

Mexico City Early Warning Signal Earthquake Early Warning Societal Response Quake Early Warning System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Anderson J, Quaas R, Singh SK, Espinosa-Aranda JM, Jimenez A, Lermo J, Cuenca J, Sanchez SF, Meli R, Ordaz M, Alcocer S, Lopez B, Alcantara L, Mena E, Javier C (1995) The Copala Guerrero, Mexico Earthquake of September 14, 1995 (MW=7.4): A Preliminary Report. Seismological Research Letters, 66, no 6, Nov-Dec. pp 11–19CrossRefGoogle Scholar
  2. Anderson J, Brune J, Prince J, Quaas R, Singh SK, Almora D, Bodin P, Onate M, Vazquez JR, Velasco JM (1994) Guerrero Mexico, Accelerograph Array: Summary of Data: 1988, Geofisica Internacional 33:341–371Google Scholar
  3. Arjonilla E, (1998) Estudio comparativo sobre el sismo del 14 de septiembre de 1995. Consejo Mexicano de Ciencias Sociales, ACGoogle Scholar
  4. CONACyT, NRC (1986) Investigacion para aprender de los sismos de septiembre 1985 en Mexico: Informe Tecnico preparado por comites conjuntos del Consejo Nacional de Ciencia y Tecnologia (Mexico) y el National Research Council (EUA), Enero de 1986Google Scholar
  5. Cooper JD, MD (1868) Letter to editor, San Francisco Daily Evening Bulletin, Nov 3, 1868Google Scholar
  6. Espinosa Aranda JM, Jimenez A, Ibarrola G, Alcantar F, Aguilar A, Inostroza M, Maldonado S, (1995): Mexico City Seismic Alert System. Seismological Research Letters, 66, no 6, Nov-Dec, pp 42–53CrossRefGoogle Scholar
  7. Espinosa Aranda JM, Jimenez A, Ibarrola G, Alcantar F, Aguilar A, Inostroza M, Maldonado S (1996) Results of the Mexico City Early Warning System. 11th World Conference on Earthquake Engineering, Aca-pulco, Mexico, June 23–28Google Scholar
  8. Esteva L (1988) The Mexico Earthquake of September 19, 1985 — Consequences, Lessons, and Impact on Research and Practice. Earthquake Spectra 4, no 3Google Scholar
  9. Fundacion Javier Barros Sierra (1992) Aprovechamiento de la Alerta Sismica. File report on Public deliberations carried out in fall 1992Google Scholar
  10. Jimenez A, Espinosa JM, Alcantar F, Garcia J (1993) Analisis de confiabilidad del Sistema de Alerta Sismica. X Congreso Nacional de Ingenieria Sismica, Puerto Vallarta, Jal, Mexico, pp 629–634Google Scholar
  11. Mileti DS (1990) Communicating Public Earthquake Risk Information, Prediction and Perception of Natural Hazards. Proceedings Symposium, 22–26 October 1990, Perugia, Italy 143–152Google Scholar
  12. National Ministry of Public Education Secretaria de Educacion Publica, Mexico (1995) Evaluacion de la Operacion del Programa Piloto Sistema de Alerta Sis-mica en Planteles de Educacion Basica. Direccion General de Operacion de Servicios Educativos en el Distrito FederalGoogle Scholar
  13. National Ministry of Public Education Secretaria de Educacion Publica, Mexico (1997) Memorias de Gestion Educativa 1994–1997Google Scholar
  14. Ordaz M, Sanchez-Sesma F, Singh SK (1995) La re-spuesta sismica en el Valle de Mexico (observaciones y modelos). Ingenieria Civil, 317, Mexico, septiembre 1995Google Scholar
  15. Singh SK, Astiz L, Havskov J (1981) Seismic gaps and recurrence periods of large earthquakes along the Mexican subduction zone: a reexamination. Bull Seism Soc Am 71:827–843Google Scholar
  16. Singh, SK, Espindola JM, Yamamoto J, Havskov J (1982) Seismic potential of the Acapulco-San Marcos region along the Mexican subduction zone. Geophys Res Letters 9:633–636CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  1. 1.Centro de Instrumentacion y Registro Sismico, A.C.Mexico, D.F.Mexico
  2. 2.Secretaria de Educacion PublicaMexico, D.F.Mexico

Personalised recommendations