Featured Research

from universities, journals, and other organizations

Mapping A Glacial Path Of Destruction

Date:
June 20, 2006
Source:
University of Leeds
Summary:
The dangerous power of glacial outburst floods - or jokulhlaups - will be easier to predict thanks to new models developed by a Leeds researcher and presented at the International Glaciological Society symposium in Iceland this Friday (June 23).

The dangerous power of glacial outburst floods - or jokulhlaups - will be easier to predict thanks to new models developed by a Leeds researcher and presented at the International Glaciological Society symposium in Iceland this Friday (June 23).

These spectacular outburst floods happen as dams of ice and earth give way or, as from Vatnajokull in Iceland in 1996, when a volcano erupts beneath a glacier. That outburst flood was 10km wide, swept away a bridge and left behind icebergs 10m high.

For the first time, scientists can model the impact of these floods, the damage they could cause and the changes they will make to the landscape. Improved computer power allows them to take digital maps of an area metre by metre and picture the impact of the water as well as the materials carried by the flood.

The power of jokulhlaups means that it's not possible to take conventional measurements of flow and the sediment load. Instead Leeds researcher and School of Geography lecturer Dr Jonathan Carrivick and colleagues have used geological detective work to examine the landscape created by a flood and calculate the energy and mechanisms needed to generate these shapes.

Outburst floods can pose a major hazard in mountainous areas. Dr Carrivick said: "It's the rocks, sediment and ice which do most damage and create the most impressive landforms not just the water, and it's only now that we can model the impact of the load of these floods."

"This is really important for hazard management and also because flood size and frequencies will alter with climate change. In particular, global warming will lead to changes in how fast glaciers melt, and the mode by which meltwater is released."

Dr Carrivick is waiting for a jokulhlaup in New Zealand this summer. The Mount Ruapehu area has been set-up for measurements by local researchers and the existing landscape mapped at very high resolution. It's hoped that the before and after maps - as well as some measurements of the flood - will support his model.


Story Source:

The above story is based on materials provided by University of Leeds. Note: Materials may be edited for content and length.


Cite This Page:

University of Leeds. "Mapping A Glacial Path Of Destruction." ScienceDaily. ScienceDaily, 20 June 2006. <www.sciencedaily.com/releases/2006/06/060620082017.htm>.
University of Leeds. (2006, June 20). Mapping A Glacial Path Of Destruction. ScienceDaily. Retrieved September 15, 2014 from www.sciencedaily.com/releases/2006/06/060620082017.htm
University of Leeds. "Mapping A Glacial Path Of Destruction." ScienceDaily. www.sciencedaily.com/releases/2006/06/060620082017.htm (accessed September 15, 2014).

Share This



More Earth & Climate News

Monday, September 15, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Conservationists Face Uphill PR Battle With New Shark Rules

Conservationists Face Uphill PR Battle With New Shark Rules

Newsy (Sep. 14, 2014) — New conservation measures for shark fishing face an uphill PR battle in the fight to slow shark extinction. Video provided by Newsy
Powered by NewsLook.com
Pakistan's 'killer Mountain' Fails to Draw Tourists After Attack

Pakistan's 'killer Mountain' Fails to Draw Tourists After Attack

AFP (Sep. 12, 2014) — In June 2013, 10 foreign mountaineers and their guide were murdered on Nanga Parbat, an iconic peak that stands at 8,126m tall in northern Pakisan. Duration: 02:34 Video provided by AFP
Powered by NewsLook.com
Solar Storm To Hit This Weekend, Scientists Not Worried

Solar Storm To Hit This Weekend, Scientists Not Worried

Newsy (Sep. 11, 2014) — Two solar flares which erupted in our direction this week will arrive this weekend. The resulting solar storm will be powerful but not dangerous. Video provided by Newsy
Powered by NewsLook.com
The Ozone Layer Is Recovering, But It's Not All Good News

The Ozone Layer Is Recovering, But It's Not All Good News

Newsy (Sep. 11, 2014) — The Ozone layer is recovering thickness! Hooray! But in helping its recovery, we may have also helped put more greenhouse gases out there. Hooray? Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

    Technology News



    Save/Print:
    Share:  

    Free Subscriptions


    Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

    Get Social & Mobile


    Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

    Have Feedback?


    Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
    Mobile iPhone Android Web
    Follow Facebook Twitter Google+
    Subscribe RSS Feeds Email Newsletters
    Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins