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 MAY 2017
Christians in Africa. That Christians in Africa, in imitation of the Merciful Jesus, may give prophetic witness to reconciliation, justice, and peace.
Large 14 Foot Crack in Headworks? Cracking Radial Gate Steel tendons? Threat to Spillway yet no Repairs in 2017? Watch
A threatening 14 foot crack growing in a massive 5 foot thick concrete pier at Radial Trunnion Gate 8 in Oroville's Spillway Headworks? DWR ... continue reading
A once beautiful uninhabited island, a sanctuary to multiple endangered species, is now revealed to be the most polluted place on Earth ... continue reading
Mysteries to the clues of Oroville Dam's leakage revealed in historical dam images? Does DWR/DSOD already know that there is a leak ... continue reading
With all the attention paid to global warming these days, what would happen if our climate disaster came from the other direction --in the ... continue reading
"A very solid scientific consensus indicates that we are presently witnessing a disturbing warming of the climatic system," warns Pope ... continue reading
by Catholic Online
- 26 Coptic Christians dead after heinous attack HD Video
- First US female genital mutilation case tries to use Religious ...
- St. Augustine of Canterbury: Saint of the Day for Saturday, May 27, 2017
- Daily Readings for Saturday, May 27, 2017
- Catholic Hostages: Filipino Cardinal prays for Islamic militants to ...
- 26 Coptic Christians BRUTALLY MURDERED on bus to St. Samuel Monastery ...
- A Big Thank You from JESUS IS - The Series HD Video
- Day 5 - Novena to the Holy Spirit for a New Pentecost for the Church HD
- Day 4 - Novena to the Holy Spirit for a New Pentecost for the Church HD
- Day 3 - Novena to the Holy Spirit for a New Pentecost for the Church HD
- Daily Reading for Wednesday, May 31st, 2017 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.