We are pleased to provide you with information developed for the Fourth
International Forum on Seismic Zonation which will be convened in two locations
year in conjunction two major international meetings. The objectives are: 1) to
assess the status of seismic zonation in every country of the world, 2) to evaluate
the reasons for advances and new initiatives, and 3) to foster continued
Seismic zonation is the process that leads to risk reduction and
sustainability of new development. It is based on the division of a geographic
region into smaller areas or zones on the basis of an integrated assessment of the
hazard, built, and policy environments of the region. Seismic zonation depends
on hazard mapping performed on national/regional, subregional, and urban (i.e.,
microzonation) scales depending on the particular application.
We gratefully acknowledge the written communications of many
professionals who responded to our request for information. Also, we
acknowledge the use of information contained in five valuable reports (see
directories in the Appendices for information on where to obtain copies of the
1. United Nations, 1990, Cooperative Project for Seismic Risk Reduction in the
Mediterranean Region (SEISMED), proceedings, Office of the United Nations
Disaster Relief Coordinator, Geneva, Switzerland, 3 vols. (Franco Maranzana -
2. United States Geological Survey, 1992, The Worldwide Earthquake Risk
Management (WWERM) Program, Reston, Virginia, 19 p (Paul Thenhaus or S.T.
Algermissen - USA/ Appendix D).
3. Instituto Panamericano de Geografia Historia, 1992, Revista Geofisica,
Lima, Peru, No. 37, July-December, 234 p (Alberto Giesecke- Peru/Appendix D).
4. Annali di Geofisica, 1992, Global Seismic Hazard Assessment Program
(GSHAP) (Special Issue), International Lithosphere Program, Publication 209,
Bologna, Italy, 257 p (Domenico Giardini-Italy/Appendix F).
5. International Association of Seismology and Physics of the Earth's Interior
and European Seismological Commission, 1993, The Practice of Hazard
Assessment, Golden, Colorado, 284 p (Write Bob Engdahl, U.S. Geological Survey,
Denver Federal Center, Mail Stop 967, Denver, Colorado 80225, USA).