geology
Salimag3
Hazard-RiskAssessment1.docxHazards
|
Hazard Rating |
Rainier |
Hood |
Crater Lake |
|
Volcano is a stratocone/stratovolcano, lava dome, complex volcano, maar, or caldera |
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|
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Maximum known VEI ≥ 3 |
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Maximum known VEI ≥ 5 |
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Maximum known VEI ≥ 7 |
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VEI 3+ eruption within the past 500 years |
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VEI 4+ eruption within the past 5,000 years |
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Pyroclastic flows within last 10,000 years |
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Mudflows (lahars) within the last 10,000 years |
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Destructive tsunami within last 10,000 years |
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|
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Occurrence of frequent volcano-seismic crises (volcanic earthquake swarms) |
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|
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Occurrence of significant ground deformation within last 50 years |
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|
SCORE |
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|
Risk
|
Risk Rating |
Rainier |
Hood |
Crater Lake |
|
Population at risk >100 |
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|
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Population at risk >1,000 |
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Population at risk >10,000 |
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Population at risk >100,000 |
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Population at risk >1,000,000 |
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Historical fatalities |
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Evacuation as a result of historical eruption(s) |
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Volcano within 300 km of a passenger airport |
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Volcano within 300 km of an international airport |
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|
SCORE |
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THREAT SCORE = HAZARD SCORE x RISK SCORE |
Rainier |
Hood |
Crater Lake |
|
|
|
|
|
For each of the above queries to which the answer is yes, score 1. For an answer of no, score 0. If no information is found, assume the answer is no and score 0.
Hazards
|
Hazard Rating |
St. Helens |
Lassen |
Shasta |
|
Volcano is a stratocone/stratovolcano, lava dome, complex volcano, maar, or caldera |
|
|
|
|
Maximum known VEI ≥ 3 |
|
|
|
|
Maximum known VEI ≥ 5 |
|
|
|
|
Maximum known VEI ≥ 7 |
|
|
|
|
VEI 3+ eruption within the past 500 years |
|
|
|
|
VEI 4+ eruption within the past 5,000 years |
|
|
|
|
Pyroclastic flows within last 10,000 years |
|
|
|
|
Mudflows (lahars) within the last 10,000 years |
|
|
|
|
Destructive tsunami within last 10,000 years |
|
|
|
|
Occurrence of frequent volcano-seismic crises (volcanic earthquake swarms) |
|
|
|
|
Occurrence of significant ground deformation within last 50 years |
|
|
|
SCORE |
|
|
|
Risk
|
Risk Rating |
St. Helens |
Lassen |
Shasta |
|
Population at risk >100 |
|
|
|
|
Population at risk >1,000 |
|
|
|
|
Population at risk >10,000 |
|
|
|
|
Population at risk >100,000 |
|
|
|
|
Population at risk >1,000,000 |
|
|
|
|
Historical fatalities |
|
|
|
|
Evacuation as a result of historical eruption(s) |
|
|
|
|
Volcano within 300 km of a passenger airport |
|
|
|
|
Volcano within 300 km of an international airport |
|
|
|
SCORE |
|
|
|
THREAT SCORE = HAZARD SCORE x RISK SCORE |
St. Helens |
Lassen |
Shasta |
|
|
|
|
|
For each of the above queries to which the answer is yes, score 1. For an answer of no, score 0. If no information is found, assume the answer is no and score 0.
