Clip description Keywords
A dye experiment reveals how water moves around an iceberg
A dye experiment reveals how water moves around an iceberg

Duration: 00:59

Striking images are revealed when a marker dye is released to show how water moves around the iceberg.

 
After the Ice Age - Cromer Cliffs
After the Ice Age - Cromer Cliffs

Duration: 02:15

The Ice Age affected lowland areas through the deposition of glacial drift. In Cromer, Norfolk, the coastal cliffs are composed entirely of glacial drift.

 
After the Ice Age - glacial breach
After the Ice Age - glacial breach

Duration: 01:07

U-shaped glacial troughs called breaches were left behind after the Ice Age. These routes have proved useful for railways.

 
After the Ice Age - Kelling Heath, Norfolk
After the Ice Age - Kelling Heath, Norfolk

Duration: 02:17

Glaciation affected lowland areas through glacial meltwater depositing drift. The drift consisted of boulder clay and outwash as seen in Norfolk today.

 
Avalanches – preventing avalanches by creating avalanches
Avalanches – preventing avalanches by creating avalanches

Duration: 02:39

How controlled avalanches set off using dynamite can stop larger, potentially far more deadly ones from developing.

 
Avalanches – The behaviour of dry powder avalanches
Avalanches – The behaviour of dry powder avalanches

Duration: 01:41

A look at the behaviour of dry powder avalanches by simulating them in laboratory conditions using powdered glass in water.

 
Avalanches – the deadliest avalanche
Avalanches – the deadliest avalanche

Duration: 02:42

A case study of the link between tectonic activity and avalanches in the Peruvian Andes.

 
Avalanches – What causes avalanches?
Avalanches – What causes avalanches?

Duration: 02:13

A look at how the nature of snowflakes can create a weak layer in snow and lead to an avalanche.

 
Discovering moulin tunnels in the Arctic
Discovering moulin tunnels in the Arctic

Duration: 02:51

An investigation into the heart of the ice to investigate what happens to water trapped underneath and within ice.

 
Discovering the origins of ice ages
Discovering the origins of ice ages

Duration: 08:57

Physicist Helen Czerski discovers ice ages form because of changes in Earth's orbit. She scuba dives to find that sea levels were dramatically higher thousands of years ago. Earth is due for another ice age in about 60,000 years time.

 
Drilling into an iceberg to understand how it melts
Drilling into an iceberg to understand how it melts

Duration: 06:05

Oceanographer and physicist Helen Czerski and her team drill into the centre of an iceberg to collect temperature data so they can better understand how the iceberg melts.

 
Effects of the Earth's changing orbit
Effects of the Earth's changing orbit

A look at the theory that changes to the Earth's orbit can contribute to changes in temperature and climate.

 
Evidence of glaciation in Scotland
Evidence of glaciation in Scotland

Iain Stewart visits Glen Roy to look at evidence of ice ages.

 
Future ice ages
Future ice ages

Iain Stewart explains the science of predicting future ice ages and their impact.

 
Glacial drift, boulder clay and outwash
Glacial drift, boulder clay and outwash

Duration: 04:01

Glaciation affected lowland areas as well as the mountains. As temperatures increased the ice melted and deposited drift in the form of boulder clay and outwash, as seen in Norfolk today.

 
Glaciated Edinburgh
Glaciated Edinburgh

Iain Stewart looks at evidence of glaciation in Edinburgh.

 
Glaciers creak and groan
Glaciers creak and groan

Duration: 00:42

Professor Iain Stewart introduces sound recordings made deep within glaciers. It is possible to hear the glaciers creak and groan as they move downhill.

 
Glaciers shrink as global temperatures rise
Glaciers shrink as global temperatures rise

Duration: 03:35

Average annual temperatures have been increasing over the last century, causing glaciers to shrink. After studying ancient Icelandic glaciers, however, scientists believe changes in global temperatures are nothing new.

 
Highland landforms – before and after glaciation
Highland landforms – before and after glaciation

Duration: 02:03

A highland landscape is described before, during and after glaciation.

 
How glaciers form
How glaciers form

Duration: 02:54

Professor Iain Stewart explains how annual snowfall accumulations are gradually compacted to form layers of hard ice that in turn form glaciers

 
How the English Channel formed
How the English Channel formed

Duration: 06:17

The English Channel formed during an ice age. Ice in the North Sea was held back by hard chalk rock. When this rock gave way, ice and water flowed south as a flash flood. This washed away the land to form the Channel.

 
How the Ice Age affected the Norfolk coastline
How the Ice Age affected the Norfolk coastline

Duration: 05:39

A visit to Cromer in North Norfolk to study the impact of the ice age on the Norfolk coastline and the development of the UK as an island.

 
Ice splitting from a glacier
Ice splitting from a glacier

Duration: 01:27

A team of scientists witness a vast wall of ice splitting from a glacier - the birth of a 'megaberg'.

 
Inside a glacier
Inside a glacier

Duration: 05:49

Professor Iain Stewart follows man-made tunnels that take him deep below the Svartisen glacier in Norway to see why moving sheets of ice are so powerful.

 
Landforms of upland glaciation in Loch Lomond
Landforms of upland glaciation in Loch Lomond

Duration: 03:00

A short introduction to glacial landforms. Animations and footage are used to explain the glacial landforms found at Loch Lomond.

 
Loch Lomond - glacial landforms
Loch Lomond - glacial landforms

Duration: 03:28

An explanation of glacial landforms using animations of Loch Lomond to illustrate.

 
Lochaber – a glaciated valley landscape
Lochaber – a glaciated valley landscape

Duration: 03:30

The key features of a glaciated valley are described using the Lochaber area of Scotland as an example.

 
Lochaber – a high level glaciated landscape
Lochaber – a high level glaciated landscape

Duration: 02:28

The key features of a glaciated landscape are explained using the Lochaber area in Scotland as an example.

 
Lochaber – highland and valley land use
Lochaber – highland and valley land use

Duration: 02:14

An outline of the limitations on potential land uses and the fragile nature of the landscape.

 
Louis Agassiz and movement of glaciers
Louis Agassiz and movement of glaciers

Iain Stewart looks at the experiments of Louis Agassiz, which showed that glaciers move downhill.

 
Observing  a crevasse's impact on the birth of an iceberg
Observing a crevasse's impact on the birth of an iceberg

Duration: 06:37

An investigation into what triggers large scale calving and to find out if the water level in a crevasse has a direct impact on the moment an iceberg is born.

 
Shrinking glaciers
Shrinking glaciers

Duration: 04:18

Professor Iain Stewart describes the retreat of many of the Earth's glaciers and the break up of polar ice sheets.

 
Studying ice cores
Studying ice cores

Iain Stewart examines ice cores to look for evidence of multiple ice ages.

 
The albedo effect
The albedo effect

Iain Stewart explains how the albedo effect could have contributed to the build up of ice in an ice age

 
The albedo effect
The albedo effect

Duration: 01:48

Professor Iain Stewart explains how the Earth's ice plays an important role in controlling the climate.

 
The current ice age
The current ice age

Duration: 02:32

Professor Iain Stewart explains that we are living during a relatively warm period of an ice age.

 
The formation, flow and retreat of glaciers
The formation, flow and retreat of glaciers

Duration: 04:48

Glaciers move faster during the summer as the meltwater beneath them acts as a lubricant. Some glaciers are retreating due to climate change.

 
The Franz Josef glacier - formation and flow
The Franz Josef glacier - formation and flow

Duration: 03:51

The Franz Josef glacier in New Zealand is fed by blizzards. The glacier moves slowly downhill eroding the landscape beneath.

 
The Rakaia river valley, New Zealand
The Rakaia river valley, New Zealand

Duration: 04:36

The Rakaia river is fed by glaciers in the New Zealand Alps. The valley experiences frequent earthquakes, landslips and freeze-thaw weathering.

 
What does a tilting  Victorian clock tell us about the ice age?
What does a tilting Victorian clock tell us about the ice age?

Duration: 01:28

How the tilting Albert Clock in Belfast gives us clues about the ice age.

 
What is under Antarctica’s ice?
What is under Antarctica’s ice?

Duration: 02:31

Professor Iain Stewart examines some of the secrets buried deep below the Antarctic ice and marvels at the other wonders of the polar ice.

 

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