Support the Arctic Sea Ice Forum and Blog

Author Topic: Upernavik Isstrøm / Upernavik Isfjord / North West Greenland  (Read 11991 times)

Espen

  • Young ice
  • Posts: 3278
    • View Profile
  • Liked: 218
  • Likes Given: 1
Upernavik Isstrøm / Upernavik Isfjord / North West Greenland
« on: October 24, 2013, 03:20:47 PM »
Upernavik Isstrøm / Sermeq is a another large tidewater glacier, this animation shows its movements during 2003 - 2013:

Notice how they are growing islands in Greenland ;)
« Last Edit: August 17, 2014, 12:05:44 AM by Espen »
Have a ice day!

Espen

  • Young ice
  • Posts: 3278
    • View Profile
  • Liked: 218
  • Likes Given: 1
Re: Upernavik Isstrøm / Sermeq / North West Greenland
« Reply #1 on: October 25, 2013, 04:35:37 PM »
Here is another animation showing the differences between 1999 and 2013.
Please notice the islands:

Please click on image to start animation.
« Last Edit: October 25, 2013, 04:47:02 PM by Espen »
Have a ice day!

Espen

  • Young ice
  • Posts: 3278
    • View Profile
  • Liked: 218
  • Likes Given: 1
Re: Upernavik Isstrøm / Sermeq / North West Greenland
« Reply #2 on: July 08, 2014, 07:17:10 PM »
Do you believe in growing rocks? Then watch this animation!

Please click on the image to start the animation!
Have a ice day!

Tor Bejnar

  • Young ice
  • Posts: 3447
    • View Profile
  • Liked: 638
  • Likes Given: 321
Re: Upernavik Isstrøm / Sermeq / North West Greenland
« Reply #3 on: July 08, 2014, 07:29:45 PM »
These rocks are not fussy.  Feed them rain and keep them warm and they grow quite nicely.  ;)  (This is not what they taught me in geology classes in the arid U.S. southwest...  There, rocks don't need water.  :P)
Arctic ice is healthy for children and other living things.

Espen

  • Young ice
  • Posts: 3278
    • View Profile
  • Liked: 218
  • Likes Given: 1
Re: Upernavik Isstrøm / Sermeq / North West Greenland
« Reply #4 on: July 12, 2014, 10:09:05 AM »
Another Grand Scale Calving at Upernavik Isstrøm between July 3 and July 11 2014:

Please click on image to start animation!
« Last Edit: July 12, 2014, 08:12:23 PM by Espen »
Have a ice day!

Espen

  • Young ice
  • Posts: 3278
    • View Profile
  • Liked: 218
  • Likes Given: 1
Re: Upernavik Isstrøm / Sermeq / North West Greenland
« Reply #5 on: July 12, 2014, 08:14:07 PM »
And to be clear the southern branch of Upernavik, is in retreat mode!
Have a ice day!

Espen

  • Young ice
  • Posts: 3278
    • View Profile
  • Liked: 218
  • Likes Given: 1
Re: Upernavik Isstrøm / Sermeq / North West Greenland
« Reply #6 on: August 04, 2014, 07:07:10 PM »
Upernavik Isstrøm update, several calving since last update (watch red encirled):

Please click on image to start animation!
Have a ice day!

Espen

  • Young ice
  • Posts: 3278
    • View Profile
  • Liked: 218
  • Likes Given: 1
Re: Upernavik Isstrøm / Sermeq / North West Greenland
« Reply #7 on: August 07, 2014, 11:11:00 PM »
Upernavik update: It is calving all over the place:

Please click on image to start animation!
Have a ice day!

Espen

  • Young ice
  • Posts: 3278
    • View Profile
  • Liked: 218
  • Likes Given: 1
Re: Upernavik Isstrøm / Upernavik Isfjord / North West Greenland
« Reply #8 on: September 14, 2014, 08:22:40 PM »
Upernavik update: Some large calving results are seen, over the last month:
« Last Edit: September 14, 2014, 08:39:05 PM by Espen »
Have a ice day!

Espen

  • Young ice
  • Posts: 3278
    • View Profile
  • Liked: 218
  • Likes Given: 1
Re: Upernavik Isstrøm / Upernavik Isfjord / North West Greenland
« Reply #9 on: March 14, 2015, 08:28:15 AM »
Spring update:

We here compare March 2014 against March 2015
N: Neutral
G: Gain
R: Retreat

Result: Overall retreat
Have a ice day!

Espen

  • Young ice
  • Posts: 3278
    • View Profile
  • Liked: 218
  • Likes Given: 1
Re: Upernavik Isstrøm / Upernavik Isfjord / North West Greenland
« Reply #10 on: March 14, 2015, 11:50:56 AM »
Speak of the devil;  Upernavik actually calved substantially between March 3 and March 10 2015, so the overall retreat result (see thread above) is changed to Overall Retreat +
Have a ice day!

Espen

  • Young ice
  • Posts: 3278
    • View Profile
  • Liked: 218
  • Likes Given: 1
Re: Upernavik Isstrøm / Upernavik Isfjord / North West Greenland
« Reply #11 on: March 14, 2015, 12:49:08 PM »
Here is animation showing the retreat of Upernavik Isstrøm between 1979 and 2015:
Have a ice day!

Shared Humanity

  • Guest
Re: Upernavik Isstrøm / Upernavik Isfjord / North West Greenland
« Reply #12 on: March 14, 2015, 01:32:13 PM »
Speak of the devil;  Upernavik actually calved substantially between March 3 and March 10 2015, so the overall retreat result (see thread above) is changed to Overall Retreat +

Look how far that glacier moved in just 7 days?????

Espen

  • Young ice
  • Posts: 3278
    • View Profile
  • Liked: 218
  • Likes Given: 1
Re: Upernavik Isstrøm / Upernavik Isfjord / North West Greenland
« Reply #13 on: March 15, 2015, 10:51:59 AM »
I found an even older image in my drawer showing the retreat over 40 years:
Have a ice day!

Espen

  • Young ice
  • Posts: 3278
    • View Profile
  • Liked: 218
  • Likes Given: 1
Re: Upernavik Isstrøm / Upernavik Isfjord / North West Greenland
« Reply #14 on: March 18, 2015, 07:39:12 PM »
Upernavik update:

Watch the speed and movement at Upernavik in just 7 days, we better watch this glacier carefully this season.
Have a ice day!

oren

  • Moderator
  • First-year ice
  • Posts: 5835
    • View Profile
  • Liked: 1980
  • Likes Given: 1736
Re: Upernavik Isstrøm / Upernavik Isfjord / North West Greenland
« Reply #15 on: March 18, 2015, 08:34:12 PM »
Can you estimate the rate of movement of the fast channel?

Espen

  • Young ice
  • Posts: 3278
    • View Profile
  • Liked: 218
  • Likes Given: 1
Re: Upernavik Isstrøm / Upernavik Isfjord / North West Greenland
« Reply #16 on: March 18, 2015, 08:56:47 PM »
Can you estimate the rate of movement of the fast channel?
+/- 22 meters in 24 hrs.
Have a ice day!

Espen

  • Young ice
  • Posts: 3278
    • View Profile
  • Liked: 218
  • Likes Given: 1
Re: Upernavik Isstrøm / Upernavik Isfjord / North West Greenland
« Reply #17 on: April 05, 2015, 05:07:36 PM »
Massive calving at Upernavik Isstrøm between April 2 and April 4 2015:
Have a ice day!

Espen

  • Young ice
  • Posts: 3278
    • View Profile
  • Liked: 218
  • Likes Given: 1
Re: Upernavik Isstrøm / Upernavik Isfjord / North West Greenland
« Reply #18 on: September 19, 2015, 12:25:15 PM »
Large retreat seen at one of the "Gates" at Upernavik Isstrøm:

N is indicating neutral calving front position.

R is indicating minor retreat, but in this case relatively large.

R is indicating large retreat.
« Last Edit: September 19, 2015, 08:09:52 PM by Espen »
Have a ice day!

A-Team

  • Young ice
  • Posts: 2547
    • View Profile
  • Liked: 360
  • Likes Given: 29
Re: Upernavik Isstrøm / Upernavik Isfjord / North West Greenland
« Reply #19 on: January 02, 2016, 12:28:51 AM »
Upernavik is another one of these upper west central glaciers that may be affected by an extensive field of basal upheavals just to the east. These features are fairly sparse along the coast and the distribution seems uncorrelated with overhead velocity (or anything else). Some areas, like the mammoth Hammond Glacier, appear completely free of anomalous basal regions.

The first image shows the available tracks, the thick blue one (20140509_01_046) is fairly central. Despite some new ones in 2014, Upernavik is unfavorable because of a lack of east-west crosstracks. The second image, adapted from RE Bell 2014, shows the known locations of basal features at the end of 2013. The right half of this image attempts to correlate the occurrence of these features with bedrock topography and paleo drainages.

The two matched animations show a sampler of other flight segments from 2014 exhibiting basal upheavals. Without a mission dedicated to mapping, the full extent of the feature will remain unknown. Many techniques have been applied to enhance visibility and features of the upheavals; there is no clear optimal method for doing this.
« Last Edit: January 02, 2016, 12:42:52 AM by A-Team »

Espen

  • Young ice
  • Posts: 3278
    • View Profile
  • Liked: 218
  • Likes Given: 1
Re: Upernavik Isstrøm / Upernavik Isfjord / North West Greenland
« Reply #20 on: January 26, 2016, 10:10:12 PM »
Hibernation? No, Upernavik Isstrøm is still calving in the dark winter:

Click on image to animate!
Have a ice day!

Shared Humanity

  • Guest
Re: Upernavik Isstrøm / Upernavik Isfjord / North West Greenland
« Reply #21 on: January 30, 2016, 02:37:46 PM »
Espen

Almost without exception, everyone of the glaciers you are now providing images for are calving aggressively during the freeze season. Large areas of water in front of these glaciers have not frozen either but are composed of an icy melange with bergs moving towards the sea. Is this normal winter behavior?

Espen

  • Young ice
  • Posts: 3278
    • View Profile
  • Liked: 218
  • Likes Given: 1
Re: Upernavik Isstrøm / Upernavik Isfjord / North West Greenland
« Reply #22 on: January 30, 2016, 02:50:06 PM »
Espen

Almost without exception, everyone of the glaciers you are now providing images for are calving aggressively during the freeze season. Large areas of water in front of these glaciers have not frozen either but are composed of an icy melange with bergs moving towards the sea. Is this normal winter behavior?

We dont know for sure, because it is the first real season with full year around coverage of the situation, due to the introduction of the data from the Sentinel-1 satellite 
Have a ice day!