Skip main navigation

Introducing hazard and risk

At the start of the course, we introduced the concept of hazard and risk when looking at the Mount Etna eruption of 2017. The hazard that Mount Etna presents are …

Learning from past events

In this activity, we’ve looked at extreme events that occurred in the distant past, in some cases before humans were around to witness them. How civilisations understood and described extreme …

Proving past events

We’ve considered the story of the geologist J Harlen Bretz and discussed why he wasn’t believed and how he was eventually able to convince people. Not only is this a …

Discovering evidence for past events

In this video, Dr Dan Hobley explains the story of how evidence for the Missoula megaflood was discovered. J Harlen Bretz became interested in Eastern Washington State in 1910 when …

Extreme events and mythology

One way in which extreme events have been discovered is through myths or the narratives and traditional stories of cultures and peoples. This is based on the thinking that if …

A new viewpoint

This week we will start to look at events from a new viewpoint. In Weeks 1 and 2 we were keen to stress the importance of looking at events over …

Changing scales: from Earth to humans

This week we’ve seen extreme versions of four types of events; earthquakes, volcanic eruptions, tsunamis and floods The regular versions of these events will have probably been well known to …

How extreme are these events?

In this video, Dr Claire Earlie compares tsunamis and floods with their extreme equivalents. In order to make a comparison between floods/tsunamis and their extreme equivalents we need some kind …

How have megafloods shaped our planet?

The Missoula floods, sometimes called the Spokane or Bretz floods, are probably the classic example of megafloods. They provide us with an excellent example of how megafloods have caused significant …

What is a Megaflood?

In this video, Dr Dan Hobley explains the difference between floods and megafloods. Megafloods are caused by something entirely different than regular floods. Regular floods are caused by rainfall whereas …

How have megatsunamis shaped our planet?

We’ve heard about the devastating consequences of tsunamis, but now we’re going to consider the impacts of a megatsunami. In the previous video, we considered the difference between what causes …

What is a Megatsunami?

In this video, Dr Claire Earlie explains the difference between a tsunami and megatsunami. When looking at the 2004 Indian Ocean tsunami we again pose the question; what is regular …

Experiencing tsunamis

Tsunamis are a regular event on our planet and can have devastating consequences. The International Tsunami Information Center (ITIC) is responsible for monitoring international tsunami warning activities in the Pacific …

Extreme volcanic eruptions

Just like earthquakes, there are regular and extreme versions of volcanic eruptions. Although earthquakes and eruptions are very different processes, they both share the fact that the largest events are …
close
  • 30% off Futurelearn Unlimited!