Greenland Ice River becomes fastest flowing glacier in the world
By Catholic Online (NEWS CONSORTIUM)
2/4/2014 (3 years ago)
Catholic Online (www.catholic.org)
The Jakobshavn Glacier, widely thought to have spawned the iceberg that sank the Titanic is now moving about four times faster than it was in the 1990s. The Greenland Ice Sheet has seen record melting in recent years and would raise sea levels were it to all melt away.
The Jakobshavn Glacier, widely thought to have spawned the iceberg that sank the Titanic is now moving about four times faster than it was in the 1990s.
LOS ANGELES, CA (Catholic online) - "As the glacier moves we can track changes between images to produce maps of the ice flow velocity," Dr. Ian Joughin, the study's lead author says. Both Joughin and Ben Smith of the University of Washington's Polar Science Center in Seattle have analyzed pictures from the German TerraSAR-X satellites to measure the speed of the glacier.
The glacier reached a record speed of more than 17 kilometers per year in the summer of 2012, which is more than 46 meters per day.
You can make a difference -- by going here --
"We are now seeing summer speeds more than four times what they were in the 1990s on a glacier which at that time was believed to be one of the fastest, if not the fastest, glacier in Greenland," Joughin explained.
Summer speeds are temporary, the scientists say, with the glacier flowing more slowly over the winter months. Both added that even the annually averaged speed-up over the past couple of years is nearly three times what it was in the 1990s.
Though Jakobshavn is now believed to be the fastest flowing feature of its type in the world, Professor Jonathan Bamber, a glaciologist from the University of Bristol, maintains that it might not be the fastest movement ever observed. Some surging glaciers can flow very quickly for short periods, on the order of months.
The largest overall implication is that the increasing velocity of Jakobshavn, located in the south-west of Greenland, means that the glacier is adding more and more ice to the ocean, contributing to sea-level rise.
"We know that from 2000 to 2010 this glacier alone increased sea level by about 1mm. With the additional speed it likely will contribute a bit more than this over the next decade," Joughin says.
As the Arctic region warms, Greenland glaciers have been thinning and releasing icebergs further and further inland. While the glacier is flowing towards the coast and carrying more ice into the ocean, its calving front is actually retreating.
Researchers believe Jakobshavn is in an unstable state, meaning it will continue to retreat further inland in the future.
Copyright 2017 - Distributed by THE CALIFORNIA NETWORK
Pope Francis Prayer Intentions for MARCH 2017
Support for Persecuted Christians. That persecuted Christians may be supported by the prayers and material help of the whole Church.
Extreme weather events are on the rise around the world. Bigger storms, longer droughts, and more of them. Yet explaining why has been ... continue reading
Scientists discover a way to turn CO2 into methanol, could THIS be the key to reversing global warming? Watch
Carbon dioxide has a bad reputation. It is criticized as the gas responsible for global warming. And while the global warming issue is more ... continue reading
Sea ice has reached its lowest levels in recent, recorded history according to NASA. Arctic sea ice reached a maximum that is well below ... continue reading
Scientists think they will have to rewrite the evolutionary history of the planet after discovering evidence of the first plants. Their ... continue reading
For decades, scientists have debated what is more responsible for global warming, human activity or nature? The answer to this question is ... continue reading
by Catholic Online
- 'Living Lent': Wednesday of the Fourth Week of Lent - Day 29
- Cause of California's drought is revealed HD Video
- Daily Reading for Thursday, March 30th, 2017 HD Video
- Daily Readings for Wednesday, March 29, 2017
- St. Berthold: Saint of the Day for Wednesday, March 29, 2017
- Newborn rescued from shallow grave as India murders its daughters
- Victims of a failing system or child abusers? Couple leaves young ...
- Pope Francis' important message for children HD
- Daily Reading for Wednesday, March 29th, 2017 HD
- Supermassive black hole discovered surfing gravitational wave HD
- Catholic Archdiocese of Mexico calls out 'traitor' Mexicans HD
Copyright 2017 Catholic Online. All materials contained on this site, whether written, audible or visual are the exclusive property of Catholic Online and are protected under U.S. and International copyright laws, © Copyright 2017 Catholic Online. Any unauthorized use, without prior written consent of Catholic Online is strictly forbidden and prohibited.