# How do you measure a volcanic eruption?

- Institution: Gresham College
- Speaker: Professor Sir Stephen Sparks CBE
- Level: For everyone
- Language: English
- Subjects: Earth and environment
- Source: [Gresham College](https://www.gresham.ac.uk/watch-now/how-do-you-measure-volcanic-eruption)
- Licence: [Educational use (Gresham College's terms)](https://www.gresham.ac.uk/terms-and-conditions)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

An excerpt taken from a lecture by Sir Stephen Sparks CBE called 'Enormous Volcanic Eruptions' Huge volcanic eruptions are the only natural hazard apart from the impact of an asteroid that can cause a global catastrophe. In the short history of civilisation, there have been few volcanic events with global effects. Much larger magnitude eruptions happened regularly in the millions of years previous. Such extreme eruptions perturb global climate for years and can have severe environmental consequences.

## Lectures

1. [How do you measure a volcanic eruption?](https://invisiblenetwork.ai/learn/gresham/how-do-you-measure-volcanic-eruption/c04427024c3a) (YouTube)