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A NEW TSUNAMI RISK SCALE FOR WARNING SYSTEMS - APPLICATION TO THE BAY OF ALGIERS IN ALGERIA, WEST MEDITERRANEAN SEA

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Author(s): L. A. Amir | A. Cisternas | W. Dudley | B. G. McAdoo | G. Pararas-Carayannis

Journal: Science of Tsunami Hazards
ISSN 8755-6839

Volume: 32;
Issue: 2;
Start page: 116;
Date: 2013;
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Keywords: vulnerability | earthquake | tsunami | risk | Bay of Algiers | Algeria

ABSTRACT
The city of Algiers and the surrounding coastal areas in northern Algeria are vulnerable to earthquakes which range from moderate to severe. In 2006, using several possible earthquake scenarios for the Western Mediterranean, the Japan International Cooperation Agency and the Algerian National Seismic Engineering Research Center predicted that heavy damage could occur in the Algiers region. Algerian Civil Defense authorities are particularly concerned by the threat of near-field earthquakes, associated slides and rock falls, as well as for tsunamis that can be generated. The present study proposes a new tsunami risk scale that provides information about the exposed communities and infrastructure, which can be used for regional tsunami alerts and warnings. Furthermore, it evaluates the vulnerability along the Bay of Algiers from tsunamigenic earthquakes. The JMA seismic intensity scale (Shindo scale) and the corresponding seismic peak ground accelerations are used in the evaluation. The results of tsunami modeling studies and of earthquake vulnerability assessment described by the present study, emphasize the significance of public education and preparedness in efforts to mitigate loss of life and damage to property.
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