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In recent years, tsunamis have devastated coastal regions. Writing in ̽»¨Ö±²¥Conversation, Camilla Penney, PhD Candidate in Geophysics at  ̽»¨Ö±²¥ of Cambridge, looks at the risks faced by Gulf states and what can be done to mitigate them.

Tsunamis are caused by earthquakes under the seabed. Some tsunamis – including the disaster that hit Japan last year – are unexpectedly large. Cambridge scientists suggest that their severity is caused by a release of gravitational energy as well as elastic energy.