Tonga is highly vulnerable to volcanic and tsunami hazards because of its geographical location and geological constitution.The island group is situated at the subduction zone of the Australian and the Pacific tectonic plates and within the Ring of Fire where intense seismic activities occur. It is about 200km to the west of the Tonga Trench which is a potential source of tsunami. Most of its atoll islands including the main island are very flat with average altitude of 2–5 meters hence highly vulnerable to tsunami inundation. Volcanic and tsunami hazards are often triggered by earthquake events.

The blow table provides a summary of all incidences of earthquakes and their impacts on Tonga.

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s