---
title: "Pacific Ring of Fire: Volcanoes & Quakes"
description: "The Pacific Ring of Fire is a 40,000 km belt where 75% of Earth's volcanoes and 90% of earthquakes occur along Pacific subduction zones. Key UPSC GS1 geography."
url: "https://modeldiplomat.com/learn/glossary/pacific-ring-of-fire"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- The Pacific Ring of Fire is a horseshoe-shaped belt of intense seismic and volcanic activity encircling the Pacific Ocean along convergent tectonic plate boundaries.
- Why do so many earthquakes and volcanoes concentrate along the Pacific Ring of Fire?
- How does the Ring of Fire differ from the Alpine-Himalayan belt?
- Is the entire Pacific Ring of Fire a subduction zone?
- What is the Wadati-Benioff zone and how does it relate to the Ring of Fire?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

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## Timeline

1. 11 March 2011

   The Tōhoku earthquake off Japan, magnitude 9.0–9.1, ruptured the Japan Trench interface, triggered a tsunami that overwhelmed the Fukushima Daiichi nuclear…

2. 15 January 2022

   The eruption of Hunga Tonga–Hunga Haʻapai in the Kingdom of Tonga generated an atmospheric pressure wave recorded globally.

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On 11 March 2011 a magnitude 9.0 megathrust earthquake along the Japan Trench segment of the Pacific Ring of Fire triggered the Tōhoku tsunami and the Fukushima Daiichi nuclear disaster.

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