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<br /> <br />2 <br /> <br /> <br />Fires raged unhindered in many <br />parts of Managua, Nicaragua, <br />after the December 23. 1972, <br />earthquake (magnitude 6.2) <br />disrupted the water system and <br />damaged much of the city's <br />fJre{ighting equipment. The <br />collapse of houses and public <br />buildings left 10,000 dead, <br />20,000 injured, and three, <br />fourths of Managua's <br />population of 400,000 without <br />homes. Nearly every <br />Nicaraguan shared in the <br />disaster's effects as the <br />earthquake disrupted almost <br />the entire nation's industrial <br />production. <br /> <br />~ <br />I <br />~ <br />Z <br />=> <br />ill <br />> <br />:J <br />o <br />~ <br />~ <br /> <br />proposal for an International Decade for Natural <br />Hazard Reduction (IDNHR). Such a concerted <br />effort ro develop, disseminate, and apply this <br />knowledge could yield both immediate and long, <br />term benefits worldwide, <br />The concepr of a global program to reduce <br />natural hazards, involving collaborative efforts <br />among culturally and economically diverse na- <br />tions, has received enthusiastic support from the <br />scientific and technological community at large, <br />International organizations including the Inter, <br />national Council of Scientific Unions (ICSU), rhe <br />International Union of Geodesy and Geophysics <br />(IUGG), the Internarional Union of Geological <br />Sciences (lUGS), the International Association of <br />Engineering Geology (IAEG), the Inter-Union <br />Commission on the Lithosphere (ICL), the Inter- <br />national Association for Earthquake Engineering <br />(IAEE), and the International Association for <br />Wind Engineering (IAWE) have expressed support <br />for the Decade. At least 17 national professional <br />groups, including the Science Council of Japan, <br />the Royal Society of Canada, the Asociacion de <br />Ingenieros Esrructurales (Argentina), the Earth- <br />quake Engineering Research Institute (United <br />Srates), rhe Mexican Academy of Engineering, <br />and the Engineering Institute of Thailand, have <br />also responded wirh strong interest and encour- <br />agement. <br />In view of this growing support for the <br />IDNHR, the time is ripe to bring the marter to the <br />attention of governments and harness rhe energies <br />of scientists, engineers, practitioners, and others <br />who are willing ro devote their talents to crearing <br />a more hazard-resilient world. <br />The present report suggests a broad framework <br />for the conduct of the IDNHR. It should not be <br />seen as a detailed planning document: such a <br />blueprint must be the product of future discus- <br />sions among prospective participants. Thus, the <br />report suggesrs many acrions and proscribes <br />none. It is a call to action to a diverse, global <br />audience and seeks a unity of vision without <br />prejudging possible IDNHR activities, <br /> <br />HAZARD REDUCTION <br /> <br />It is generally recognized rhar the impacrs of <br />natural hazards are increasing and will continue <br />to do so unless rhe world community takes <br />concerted action. The reasons are clear: popula- <br />