Subscribe to our free daily newsletters
. 24/7 Space News .




Subscribe to our free daily newsletters



ICE WORLD
In warmer climates, Greenlandic deltas have grown
by Staff Writers
Boulder CO (SPX) Oct 06, 2017


The study investigates changes to the deltas since the 1940s and up until today. In the period between 1940 and 1980, the deltas did not change much, but as the climate became warmer, the deltas started to grow. The photo on the left shows a delta in West Greenland photographed in 1985 and on the right the same delta in 2010. It clearly shows how the delta has been extended by several kilometres over this 25-year period. Image courtesy Left: Danish Energy Agency. Right: Google Earth.

Deltas are important ecosystems, where freshwater meets the sea, and where people for centuries have been engaged in agriculture and fishing. Today, most of the deltas in the world are drowning because of increased human exploitation and a rise in the global sea level. In an article just published in Nature, a research team led by researchers at the University of Copenhagen has shown that deltas in Greenland, unlike most other deltas, are growing.

The team of researchers included Mette Bendixen and Lars L. Iversen from the University of Copenhagen, University of Colorado Boulder postdoctoral researcher Katy Barnhart--in the Cooperative Institute for Research in Environmental Sciences--and other Danish, American and Greenlandic scientists.

"We examined 121 deltas by looking at historical aerial photos taken by the American army during the Second World War" Bendixen said. "We compared these with modern satellite photos. In this way, we have been able to track changes in the Greenland deltas and see what has happened over the last 75 years."

The growing deltas are affecting the infrastructure in Greenland with major consequences for both fishing and tourism. The results from the study have altered our previous understanding of how the Arctic coast reacts to climate change.

"Our study shows how climate change affects environmental processes in the Arctic landscape. As a consequence of the warmer temperatures, more sediment is transported out to the coast. At the same time, the open-water period has been extended, and the material is therefore deposited in the deltas. And in this way, the deltas are growing," says Associate Professor Aart Kroon.

"Large parts of the Arctic coasts are being eroded, but in Greenland, we see the opposite happening. The study shows that climate change in the Arctic affects the coasts in a different way to what we have seen so far," said Bendixen.

ICE WORLD
Winter cold extremes linked to high-altitude polar vortex weakening
Potsdam, Germany (SPX) Sep 25, 2017
When the strong winds that circle the Arctic slacken, cold polar air can escape and cause extreme winter chills in parts of the Northern hemisphere. A new study finds that these weak states have become more persistent over the past four decades and can be linked to cold winters in Russia and Europe. It is the first to show that changes in winds high up in the stratosphere substantially con ... read more

Related Links
University of Colorado at Boulder
Beyond the Ice Age


Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

ICE WORLD
OECD calls for tourism to be more sustainable

Fast-moving space industries create new ethical challenges

Space Cooperation Between China, Russia Needs Long-Term Mechanism

NASA's New Hubble E-Book Series Dives into the Solar System and Beyond

ICE WORLD
mu Space partners with Blue Origin to launch geostationary satellite

What looks good on paper may look good in space

Demonstrator 3 linear aerospike ready to start tests

ISRO to resume satellite launches by December

ICE WORLD
Lockheed Martin unveils reusable water-powered Mars lander

SpaceX's Musk unveils plan to reach Mars by 2022

Research sheds new light on how Earth and Mars were created

The Mars 2020 Rover features new spectral abilities with its new SuperCam

ICE WORLD
Mars probe to carry 13 types of payload on 2020 mission

China's cargo spacecraft separates from Tiangong-2 space lab

Work on China's mission to Mars 'well underway'

Chinese company eyes development of reusable launch vehicle

ICE WORLD
The ESA 500: fostering start-up companies to use space technology on Earth

Thomas calls for new comprehensive Australian Space Agency at IAC address

AsiaSat 9 Set for Launch from Baikonur on September 29

Australia to create national space agency

ICE WORLD
UV-irradiated amorphous ice behaves like liquid at low temperatures

Teleoperating robots with virtual reality

Surfactants have surprising effect on nanobubble stability

Fast-moving magnetic particles could enable new form of data storage

ICE WORLD
MATISSE to Shed Light on the Formation of Earth and Planets

Glenn Tests Thruster Bound for Metal World

Searching for Distant Worlds With a Flying Telescope

Scientists propose new concept of terrestrial planet formation

ICE WORLD
Solving the Mystery of Pluto's Giant Blades of Ice

Global Aerospace Corporation to present Pluto lander concept to NASA

Pluto features given first official names

Hibernation Over, New Horizons Continues Kuiper Belt Cruise




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement