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4574220
Gestion du risque en milieu urbain: San Francisco
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Carte conceptuelle
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san francisco
carte conceptuelle
science
secondary 1
Mind Map by
laporte-a
, updated more than 1 year ago
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Created by
laporte-a
over 8 years ago
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laporte-a
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Resource summary
Gestion du risque en milieu urbain: San Francisco
Les dangers géographiques
Séismes
Tsunami
Sécheresses
L'histoire des séismes
le séisme de 1906
7,9 sur l'échelle de Richter
environ 1000 victimes
environ 250 000 sans-abri
Détruit une grande partie de la ville
le séisme de 1989
7,1 sur l'échelle de Richter
plus de 3050 victimes
donc 60 décès
Dommages matériels = plusieurs milliards de $
Solutions
Mettre en place des mesures de sécurité
Plans d'évacuations
Construction de maisons solides
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