riesgos naturales
TRANSCRIPT
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LOS RIESGOS NATURALES EN CHILE
PELIGROS GENERADOS POR LA NATURALEZA
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ACCIÓN SÍSMICA
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ACCIÓN SÍSMICA
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1.- RIESGOS SÍSMICOS
TECTÓNICA DE PLACAS
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2.- RIESGOS DE TSUNAMI
EL ELEMENTO QUE DESENCADENA LOS MAREMOTOS REGULARMENTE SON LOS TERREMOTOS, ERUPCIONES VOLCÁNICAS SUBMARINAS Y DERRUMBES COSTEROS
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3.- RIESGO VOLCÁNICO
AL ENTRAR EN ERUPCIÓN EL VOLCÁN TRAE ASOCIADO:EMISIÓN DE GASESLLUVIA ÁCIDAFLUJO Y/U OLEADAS PIROCLÁSTICASAVALANCHAS VOLCÁNICASACTIVIDAD SÍSMICA LOCALALTERACIÓN QUÍMICA DE LAS AGUAS
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4.- RIESGOS HIDROMETEOROLÓGICOS
SON AQUELLOS PROCESOS NATURALES QUE GENERAN POR EL TRANSPORTE DE MATERIALES (ROCA, TIERRA, LODO, AGUA) Y SON CAPACES DE MODIFICAR EL PAISAJE
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TIPOS DE RIESGOS HIDROMETEREOLÓGICOS
INUNDACIONESCRECIDASALUVIONESAVALANCHASDESLIZAMIENTOS NEVAZONESMAREJADAS
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INUNDACIONES EN CHILE
AGOSTO DE 2005
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CRECIDA DE RÍOS Y DESLIZAMIENTO DE TIERRAS
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MAREJADAS
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HURACANES
Nombre que reciben los ciclones tropicales en ciertas partes del mundo, usado para referirse a un sistema de tormentas caracterizado por una circulación cerrada alrededor de un centro de baja presión y que produce fuertes vientos y abundante lluvia
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NEVAZONES