Question: What percent of earthquakes with at least 9.0 magnitude were associated with tsunamis?

Decomposition:
question: What were the earthquakes with at least 9.0 magnitude?
answer: 1964 Alaska earthquake
2004 Indian Ocean earthquake
2011 Tōhoku earthquake
1952 Severo-Kurilsk earthquake
question: Was the 1964 Alaska earthquake associated with a tsunami?
answer: yes
question: Was the 2004 Indian Ocean earthquake associated with a tsunami?
answer: yes
question: Was the 2011 Tōhoku earthquake associated with a tsunami?
answer: yes
question: Was the 1952 Severo-Kurilsk earthquake associated with a tsunami?
answer: yes

Answer:
100

Categories: Geology
Oceanography