Arctic Sea Ice : Forum

Cryosphere => Greenland and Arctic Circle => Topic started by: Espen on April 20, 2013, 06:08:10 PM

Title: Jøkelbugt / North East Greenland
Post by: Espen on April 20, 2013, 06:08:10 PM
Action is coming to Jøkelbugt:

A big piece of sea ice went off today/yesterday off Isle De France (Now off. Prince Henriks Ø):

http://rapidfire.sci.gsfc.nasa.gov/imagery/subsets/?subset=Arctic_r02c03.2013110.terra.250m (http://rapidfire.sci.gsfc.nasa.gov/imagery/subsets/?subset=Arctic_r02c03.2013110.terra.250m)
Title: Re: Jøkelbugt/North East Greenland
Post by: Espen on April 21, 2013, 11:53:46 AM
Flade Is Blink / North East Greenland;

Although not exactly in the Jøkelbugt area, but a "bit" North, the action is continuing, a big piece of sea ice took off from the eastern point of Flade Isblink, the whole area will be interesting to watch over the next couple of weeks!

http://rapidfire.sci.gsfc.nasa.gov/cgi-bin/imagery/single.cgi?image=crefl2_143.A2013111053500-2013111054000.1km.jpg (http://rapidfire.sci.gsfc.nasa.gov/cgi-bin/imagery/single.cgi?image=crefl2_143.A2013111053500-2013111054000.1km.jpg)
Title: Re: Jøkelbugt/North East Greenland
Post by: FrankD on April 21, 2013, 05:59:05 PM
I noticed that too, Espen. I make it aboubt 6,000 sq km, or about 0.75 Corsicas (Neven established the Corsica a few years ago as the standard measure for large events :) ).

It looks like the stretch from there down to Shannon Island (maybe 10,000 sq km in total) is fairly thin and weak - seems likely to break up quite soon.
Title: Re: Jøkelbugt/North East Greenland
Post by: Espen on April 22, 2013, 10:40:00 PM
Big action around Jøkelbugt and Dove, the ice is getting beaten up:

http://rapidfire.sci.gsfc.nasa.gov/imagery/subsets/?subset=Arctic_r02c03.2013112.terra (http://rapidfire.sci.gsfc.nasa.gov/imagery/subsets/?subset=Arctic_r02c03.2013112.terra)

I think we will see a ice free area around July, and it will be interesting to follow how Zachariea and 79 will react, and will this season be the last for Spaltegletscher?
Title: Re: Jøkelbugt/North East Greenland
Post by: Espen on May 08, 2013, 06:19:56 PM
The turquoise color often seen last year, now appears in several places on land in the Jøkelbugt / Dove area:

250 m image:
http://rapidfire.sci.gsfc.nasa.gov/cgi-bin/imagery/single.cgi?image=crefl2_143.A2013128125000-2013128125500.250m.jpg (http://rapidfire.sci.gsfc.nasa.gov/cgi-bin/imagery/single.cgi?image=crefl2_143.A2013128125000-2013128125500.250m.jpg)

4 km image:
http://rapidfire.sci.gsfc.nasa.gov/imagery/subsets/?subset=Arctic_r02c03.2013128.aqua (http://rapidfire.sci.gsfc.nasa.gov/imagery/subsets/?subset=Arctic_r02c03.2013128.aqua)
Title: Re: Jøkelbugt/North East Greenland
Post by: TerryM on May 08, 2013, 06:56:10 PM
Spring tide comes to Greenland today & tomorrow. Watch for fast ice drifting away from shore in the next few days.


Terry
Title: Re: Jøkelbugt/North East Greenland
Post by: Espen on May 08, 2013, 07:10:51 PM
Spring tide comes to Greenland today & tomorrow. Watch for fast ice drifting away from shore in the next few days.


Terry

Thanks for the heads up!
Title: Re: Jøkelbugt/North East Greenland
Post by: Espen on May 13, 2013, 11:20:07 AM
The last remaining fast ice around Nordøstrundingen / Flade Isblink is now been "peeled" of :

http://rapidfire.sci.gsfc.nasa.gov/cgi-bin/imagery/single.cgi?image=crefl2_143.A2013133050000-2013133050500.250m.jpg (http://rapidfire.sci.gsfc.nasa.gov/cgi-bin/imagery/single.cgi?image=crefl2_143.A2013133050000-2013133050500.250m.jpg)
Title: Re: Jøkelbugt/North East Greenland
Post by: Espen on June 07, 2013, 11:24:51 AM
The break up of sea ice off Jøkelbugt is speeding up, a large piece of sea ice broke away since yesterday right outside 79 Fjords Glacier:

http://rapidfire.sci.gsfc.nasa.gov/cgi-bin/imagery/single.cgi?image=crefl2_143.A2013158063000-2013158063500.250m.jpg (http://rapidfire.sci.gsfc.nasa.gov/cgi-bin/imagery/single.cgi?image=crefl2_143.A2013158063000-2013158063500.250m.jpg)
Title: Re: Jøkelbugt/North East Greenland
Post by: Espen on June 10, 2013, 10:15:02 AM
Another big piece of sea ice took off outside Germania Land and Danmarkshavn today.
Aprox. 1500 km2

http://rapidfire.sci.gsfc.nasa.gov/cgi-bin/imagery/single.cgi?image=crefl2_143.A2013161052500-2013161053000.2km.jpg (http://rapidfire.sci.gsfc.nasa.gov/cgi-bin/imagery/single.cgi?image=crefl2_143.A2013161052500-2013161053000.2km.jpg)
Title: Re: Jøkelbugt/North East Greenland
Post by: Espen on June 11, 2013, 07:41:00 PM
Checking forth and back, I believe the On-Shore melt is something like 20 days ahead of 2012.
Title: Re: Jøkelbugt/North East Greenland
Post by: mspelto on June 13, 2013, 04:33:28 PM
I prefer to get the imagery, more choices at
http://ocean.dmi.dk/arctic/modis.uk.php (http://ocean.dmi.dk/arctic/modis.uk.php)
Looking at Landsat images of this area today.
Title: Re: Jøkelbugt/North East Greenland
Post by: mspelto on June 18, 2013, 01:34:23 PM
New post on 79 Glacier with imagery from this week. <a href="http://glacierchange.wordpress.com/2013/06/18/nioghalvfjerdsbrae-79-glacier-northeast-greenland/">79 Glacier</a>.
Title: Re: Jøkelbugt/North East Greenland
Post by: ChrisReynolds on June 18, 2013, 05:02:07 PM
New post on 79 Glacier with imagery from this week. <a href="http://glacierchange.wordpress.com/2013/06/18/nioghalvfjerdsbrae-79-glacier-northeast-greenland/">79 Glacier</a>.

Thanks Prof Pelto.
Title: Re: Jøkelbugt/North East Greenland
Post by: Espen on June 23, 2013, 10:01:03 PM
Update Jøkelbugt June 2013:

What can we expect in the Jøkelbugt area this season, we may get back to the situation in the early 2000s when Jøkelbugt was more or less sea ice free, the reason why I believe this could happen is due to the little sea ice we receive from the Fram Strait (export) 2013, I expect the sea temperature will be relatively higher this season and with that more (fast) sea ice melting. The last 10 years we have seen the fast ice was grounded due to the shallow water of Belgica Bank, this may not be so this season and we may see the same situation as seen below on the image from 2003.
Note the fairly big retreat of Spaltegletscher, during the past 10 years ( 6 - 8 km).
Both the Nioghalvfjerdsbræ (79) and Zachariae Isstrøm, is more or less the same, the tongue of the latter is in the process of being separated south of Lambert Land though.
Click on the image to enlarge.
Title: Re: Jøkelbugt/North East Greenland
Post by: Espen on June 24, 2013, 02:32:34 PM
The fast ice of Jøkelbugt is changing color now from white to turquoise, a clear sign of melting.
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 11, 2013, 12:15:51 PM
Another big sized piece of fast ice will soon be released from the pack:


Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 11, 2013, 02:03:09 PM
Cracking is seen better now, a bit Photoshop stuff added ;)
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 11, 2013, 06:31:37 PM
And now the real craks without Photoshop assistance ;):
 
Title: Re: Jøkelbugt / North East Greenland
Post by: Neven on July 11, 2013, 06:48:43 PM
Wow, Photoshop really is powerful software, Espen! ;)
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 11, 2013, 06:53:18 PM
Neven, yes  it is too powerful sometimes! :-\

It is only a 2800 km2 job!
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 12, 2013, 09:18:42 AM
Moving a bit from yesterday:
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 21, 2013, 07:35:44 PM
More sea ice coming apart:
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 24, 2013, 09:20:38 AM
More break up:

Please click on image to enlarge!
Title: Re: Jøkelbugt / North East Greenland
Post by: Jmo on July 25, 2013, 02:34:24 AM
Big Berg, north east water, and further fracturing of land-fast ice...
Complete with algal bloom in the north of the shot??
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 25, 2013, 08:33:11 AM
JMO,

Yes it is big, but not a berg but a ice island (fast ice).
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 25, 2013, 11:02:57 AM
Break down of fast ice in the North East is in full progress:

Please click on image to enlarge!
Title: Re: Jøkelbugt / North East Greenland
Post by: Tor Bejnar on July 25, 2013, 01:43:12 PM
Thanks, Espen, for that information.  I almost asked a day or two ago how old the remaining fast ice is.  Shoreward of the 2003 area (now 10-year old ice), are some of the ice shelfs in this area ancient?
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 25, 2013, 03:42:27 PM
Tor,

Ancient? No, not along the East Coast of Greenland, but there may be a spot or 2 on the North Coast, Hunt Fjord may be one of them?
Title: Re: Jøkelbugt / North East Greenland
Post by: Tor Bejnar on July 25, 2013, 04:30:50 PM
Espen,
I recall your posting the graphic of the remaining bits and pieces of the Ellesmere Ice Shelf (https://forum.arctic-sea-ice.net/index.php/topic,219.0.html (https://forum.arctic-sea-ice.net/index.php/topic,219.0.html)) in Canada.
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 25, 2013, 04:38:11 PM
Tor;

No there is a Hunt Fjord in the very north of Greenland, Johannes V. Jensen Land, I suspect there is a Ice Shelf in there, but not 100% sure, have not been there lately ;).
Not to be mixed up with Ward Hunt in Canada (Ellesmere Island).
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 26, 2013, 08:55:09 AM
Further break up of fast ice this time just north- west of Isle de France, a nice big piece, the crack is enhanced by image editor, sorry for the poor quality of the image it only a prelim swath image:
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 26, 2013, 05:59:59 PM
Jøkelbugt and Tobias Ø:

Please click on image to enlarge!
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 26, 2013, 06:00:07 PM
Jøkelbugt and Tobias Ø (aprox. 2 km2):

Please click on image to enlarge!


Tobias Ø (Island)
First observed in 1907.
First proven existence in
1998 by Gereon Budeus.
Title: Re: Jøkelbugt / North East Greenland
Post by: ghoti on July 26, 2013, 11:10:02 PM
This is the first sign of open water near buoy 2012M. 2012M has shown 55cm of surface melt in the past 30 days or so. Going, going, going....
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 28, 2013, 11:51:36 AM
More breakup of fast Ice:
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 29, 2013, 05:08:24 PM
Update ice:


Please click on image to enlarge image and much better details:
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 30, 2013, 04:48:48 PM
Update ice:


Please click on image to enlarge image and much better details:
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 30, 2013, 08:33:29 PM
More action in Jøkelbugt this afternoon, cracks are seen now in many places.

I am pretty sure now that we will see Jøkelbugt free of fast-ice by the end of this melting season.

!!Cracks enhanced with image editor!!

Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 31, 2013, 11:11:46 AM
More action in Jøkelbugt and there will be a lot to watch over the next coming days:

Click on image to enlarge and for better details!
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 31, 2013, 04:12:02 PM
Fast Ice / Jøkelbugt:

Click on image to enlarge and for better details!
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on August 01, 2013, 05:57:05 PM
Fast Ice / Jøkelbugt:

Click on image to enlarge and for better details!
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on August 06, 2013, 10:40:34 PM
From DMI:

An iceberg (island) named Topp supposedly "born" in the Jøkelbugt area, is now located south of Greenland, and passed Kap Farvel already, I will report more on this when back from my travel.
The article is in Danish, please a translating tools:
http://www.dmi.dk/nyheder/arkiv/nyheder-2013/8/isbjerget-topp-passerer-groenlands-bund/ (http://www.dmi.dk/nyheder/arkiv/nyheder-2013/8/isbjerget-topp-passerer-groenlands-bund/)
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on August 07, 2013, 06:10:43 PM
Tried to upload yesterday in Praha, but line to bad. I will try this time from Leipzig:

As you can see from the image below, the whole area of fast ice  in Jøkelbugt in now broken up into zones, this is by the way the last fast ice in North Eastern Greenland , depending on how long the melting season will last this season and refreeze begins it will be be very interesting to follow.

Please click on image to enlarge and for better details!
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on August 16, 2013, 04:45:15 PM
Fast ice update North East Greenland: The Belgica Bank fast ice is being reduced and the Zacharia x-tongue is elevated to fast ice status:
Title: Re: Jøkelbugt / North East Greenland
Post by: Tor Bejnar on August 16, 2013, 06:47:08 PM
Espen,
I notice your name is occasionally on the images, just as a glacier or island name is occasionally included.  I imagine looking at an enlargement of the image and seeing you right there! :)

Related to what you wrote, I imagine this x-tongue now fast ice might be quite thick.  But I don't know whether to image in my mind 15 m thick or 150 m thick ice.  Do you know?

(If I'd attended my 2nd choice graduate school in the 70's, I would have done field work on Greenland, and would maybe have answers to my wunderings.  But I went south instead.)
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on August 16, 2013, 06:52:43 PM
Hi Tor,

I believe the x-tongue, now fast ice, will remain there for many years, the only difference now is it will not be supplied with new ice from Mummy (Zachariae). And will be attacked from 2 fronts.
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on August 20, 2013, 11:36:59 AM
The remaining fast ice located of Jøkelbugt is at least going to be halved there is a large crack right in the middle of "ice island", if all this fast ice will start to move, it will be the first time in about 10 years.

Please click on image to enlarge:
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on August 21, 2013, 11:12:25 AM
Fast ice update:
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on August 22, 2013, 03:28:47 PM
It seems like it is the eastern part (with a cross) that is moving, I believe the rest is either anchored to the bottom (Belgica Bank / shallow water) or to Tobias Island.

http://da.wikipedia.org/wiki/Tobias_%C3%98 (http://da.wikipedia.org/wiki/Tobias_%C3%98)

http://en.wikipedia.org/wiki/Tobias_Island (http://en.wikipedia.org/wiki/Tobias_Island)
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on August 23, 2013, 11:23:15 AM
The last remaining fast ice island in North East Greenland is dividing again:
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on August 23, 2013, 11:38:34 AM
Left Fast Ice compared to 2012:
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on August 30, 2013, 08:20:28 PM
Fast ice update, remember this is the last fast ice left on the entire coast of Eastern Greenland.
The green area shows what was left of fast ice after the "record" year 2012,  so somehow Jøkelbugt beats that, this melting activity is also seen at Zachariae Glacier.
The red shaded area shows what I think is still fast ice.
So if Buoy 2012M is sitting here she wont move for while?

Please click on image to enlarge and better details!
Title: Re: Jøkelbugt / North East Greenland
Post by: Wipneus on September 01, 2013, 09:06:38 AM
As seen by the AMSR2 sensors, has the ice fasted on Belgica Bank broken up?
Title: Re: Jøkelbugt / North East Greenland
Post by: Jim Hunt on September 01, 2013, 12:43:10 PM
It seems ice mass balance buoy 2012M has "broken up" as well. The web page still says "All sensors OK" but no new data has arrived since August 28th. As seen by Terra (https://earthdata.nasa.gov/labs/worldview/?map=393824,-1129235.968,819296,-907283.968&products=baselayers,MODIS_Terra_CorrectedReflectance_TrueColor~overlays,arctic_graticule_3413,arctic_coastlines_3413&time=2013-08-31&switch=arctic):
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on September 06, 2013, 09:10:45 AM
I have produced an animation about "The  untouchable" Fast Ice of Jøklebugt.

Due to the size of the file it is located at Google:

https://docs.google.com/file/d/0B_a0Tecpig0jbGl6YWkxZkYxeFU/edit?usp=sharing
Title: Re: Jøkelbugt / North East Greenland
Post by: Neven on October 04, 2013, 07:05:44 PM
Spam removed, thanks everyone.
Title: Re: Jøkelbugt / North East Greenland
Post by: Andreas T on October 18, 2013, 08:59:47 PM
some clear sky today and yesterday allows a glimpse of the ice coming south from Fram Strait. Can the size and structure of floes give some idea of thickness? Is that old ice?
http://rapidfire.sci.gsfc.nasa.gov/cgi-bin/imagery/single.cgi?image=crefl1_143.A2013291130000-2013291130500.250m.jpg (http://rapidfire.sci.gsfc.nasa.gov/cgi-bin/imagery/single.cgi?image=crefl1_143.A2013291130000-2013291130500.250m.jpg)
http://rapidfire.sci.gsfc.nasa.gov/cgi-bin/imagery/single.cgi?image=crefl1_143.A2013290135500-2013290140000.250m.jpg (http://rapidfire.sci.gsfc.nasa.gov/cgi-bin/imagery/single.cgi?image=crefl1_143.A2013290135500-2013290140000.250m.jpg)
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on October 18, 2013, 09:25:00 PM
It looks like newly formed sea ice to me, especially due to the ice-contrails.
Title: Re: Jøkelbugt / North East Greenland
Post by: Andreas T on October 19, 2013, 01:20:59 AM
from the drift vectors here http://www7320.nrlssc.navy.mil/hycomARC/navo/arcticicespddrf_nowcast_anim30d.gif (http://www7320.nrlssc.navy.mil/hycomARC/navo/arcticicespddrf_nowcast_anim30d.gif)
I thought some of the large chunks, which don't have sheared and shattered as much in collisions as others, could have been swept from the area north of greenland where NSIDC shows old ice http://nsidc.org/arcticseaicenews/ (http://nsidc.org/arcticseaicenews/)
What I'd realy like to see is an updated version of this: http://www.youtube.comLoss (http://www.youtube.comLoss) of multi-year Arctic sea ice, 1987-present 

edit: Laurent kindly provides a better link in the following comment
Title: Re: Jøkelbugt / North East Greenland
Post by: Laurent on October 19, 2013, 11:19:26 AM
Better like that !?
http://www.youtube.com/watch?v=1soac0qun0g# (http://www.youtube.com/watch?v=1soac0qun0g#)
Title: Re: Jøkelbugt / North East Greenland
Post by: Andreas T on October 19, 2013, 12:32:57 PM
Thanks Laurent, for a working link :-[
I'd love to see how 2013 looks in this. By looking at MODIS I am trying to get a "feel" what those light coloured bits in the animation look like. Maybe that is naive? Great images anyway, those swirls of icy slush (in 250m pixels!) and huge slabs crunching into each other while thin ice is forming in the gaps. Somebody has called rapidfire MODIS addictive, I am hooked! Pity the North is now getting dark.
Title: Re: Jøkelbugt / North East Greenland
Post by: Jim Hunt on October 19, 2013, 04:40:16 PM
Somebody has called rapidfire MODIS addictive, I am hooked! Pity the North is now getting dark.

You could always turn to the NOAA AVHRR images available via DMI:

http://ocean.dmi.dk/arctic/joekelbugt.uk.php (http://ocean.dmi.dk/arctic/joekelbugt.uk.php)
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on March 29, 2014, 07:10:39 PM
First signs of melting activity seen in the Jøkelbugt area, it is the outlet from Sanddal valley/ river:

Please click on image to enlarge!
Title: Re: Jøkelbugt / North East Greenland
Post by: Sonia on March 29, 2014, 08:27:43 PM
What sharp eyes you have!  Nice image, nice observation.  Where could the heat come from to melt the river?  It doesn't seem the weather has been warm enough.  Is it geothermal?
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on March 29, 2014, 09:17:42 PM
Sonia;

To be honest I don't know what is the cause, maybe  a mix of snow/ice combined with sand and the sun (absorption) is a reason for the early melt?

*) The place Sanddal is infested with sand.
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on March 29, 2014, 09:27:19 PM
Here is a Landsat image from March 24 2014, showing the sand delta from Sanddal, maybe we can ask Wipneus converting this image into natural colors?
Title: Re: Jøkelbugt / North East Greenland
Post by: Wipneus on March 30, 2014, 12:43:06 PM
I will later. For now here is an image on March 28, you need to look through the clouds to see the mud plain from Sand Valley.

Notice the "worms" in the ice to the left.
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on March 30, 2014, 01:36:36 PM
Thanks Wipneus ;)

The natural color image shows the sand delta of Sanddal (Sand Valley).
Title: Re: Jøkelbugt / North East Greenland
Post by: Wipneus on March 30, 2014, 03:37:51 PM
Hi-res 15m image of Sand Valley, North East Greenland.

(that is when you click, otherwise the picture is only so-so)
Title: Re: Jøkelbugt / North East Greenland
Post by: Shared Humanity on March 30, 2014, 04:47:16 PM
First signs of melting activity seen in the Jøkelbugt area, it is the outlet from Sanddal valley/ river:

This area of Greenland has seen increasing melt and mass loss for the last decade. I believe some of this melt is reaching the base of the ice sheet. When you said "river" you hit on why melt is occurring here. All of the major glaciers are, in fact, frozen rivers. As more and more melt occurs and some of that melt reaches the base of the ice sheet, we will see more behavior that looks like the behavior of a river.

While Humboldt Glacier is slow moving, there are huge meltwater pulses that cause a great deal of silt to enter the sea, exactly how any river builds a delta. Are we seeing silt enter the sea at Sanddal?

Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on March 30, 2014, 05:53:06 PM
Hi-res 15m image of Sand Valley, North East Greenland.

(that is when you click, otherwise the picture is only so-so)

Wipneus,

We better keep an eye on this whole area during the season, and we are in a much better position to do so with Landsat 8, than earlier years.
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on June 14, 2014, 06:58:30 PM
Our friend Andreas Muenchow and Polarstern is now just off the coast of Isle de France (Jøkelbugt/North East Greenland):

http://sailwx.info/shiptrack/shipposition.phtml?call=DBLK (http://sailwx.info/shiptrack/shipposition.phtml?call=DBLK)
Title: Re: Jøkelbugt / North East Greenland
Post by: Andreas T on June 15, 2014, 03:46:01 PM
edit
having had a look at the actual geography, I realize that I had wrongly assumed to see melt in sea ice. Look at an image from August https://earthdata.nasa.gov/labs/worldview/?switch=arctic&products=baselayers,!MODIS_Aqua_CorrectedReflectance_TrueColor,MODIS_Terra_CorrectedReflectance_TrueColor~overlays,arctic_graticule_3413&time=2013-08-15&map=413465.727437,-1249646.62771,675609.727437,-1128046.62771 (https://earthdata.nasa.gov/labs/worldview/?switch=arctic&products=baselayers,!MODIS_Aqua_CorrectedReflectance_TrueColor,MODIS_Terra_CorrectedReflectance_TrueColor~overlays,arctic_graticule_3413&time=2013-08-15&map=413465.727437,-1249646.62771,675609.727437,-1128046.62771)
oddly today's image shows ice or snow where march showed water(?)
https://earthdata.nasa.gov/labs/worldview/?switch=arctic&products=baselayers,!MODIS_Aqua_CorrectedReflectance_TrueColor,MODIS_Terra_CorrectedReflectance_TrueColor~overlays,arctic_graticule_3413&time=2014-06-15&map=413465.727437,-1249646.62771,675609.727437,-1128046.62771 (https://earthdata.nasa.gov/labs/worldview/?switch=arctic&products=baselayers,!MODIS_Aqua_CorrectedReflectance_TrueColor,MODIS_Terra_CorrectedReflectance_TrueColor~overlays,arctic_graticule_3413&time=2014-06-15&map=413465.727437,-1249646.62771,675609.727437,-1128046.62771)
also compare with 15 june 2013, more bare rock and ice last year.
my original comment:
Sorry for not giving references, but I recall seeing vertical temperature profiles of the icesheet which show that near the coast the lower part of the ice (where seasonal temperatures at the surface have no influence) is at melting point temperature all year round. This is also shown by the fact that there is water flowing out from under the ice. I guess that this water originates from the surface (in the summer) but takes some time to reach the edge of the ice sheet. Of course this water could not melt (freshwater) ice without being warmer than melting point, and would have lost that heat while flowing through the ice. Could it melt sea ice by mixing with sea water (adding salinity without much cooling)? There also was a mention somewhere that this water has some heat input from converting kinetic energy, although I would expect much of this to be lost to surrounding ice on its way down from the ice surface. May be the negative expansion coefficient (making freshwater most dense at 4deg C) allows water of slightly above melting point temperature to flow underneath the ice.
 
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on July 24, 2014, 01:58:40 PM
Final phase of the disintegration of sea ice in front of Jøkelbugt and Dove Bugt is now in full swing:
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on August 14, 2014, 09:10:29 PM
Today's images from Modis:

The big question will Belgiske Banke survive?
Title: Re: Jøkelbugt / North East Greenland
Post by: RunningChristo on August 14, 2014, 10:23:53 PM
lt WILL go, 99% sure! The ice at the northeastern coast of Greenland is breaking fast the last days, and east of the remaining fastice there's barely ice in the sea, just "Soup"!

A just as big question is if the ice further North, in the Simon Sea/fjords, will be flushed due to the fact that the icecork outside the fjord is now blowing away from the coast?!
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on August 15, 2014, 12:16:11 PM
Lots of action in and around Jøkelbugt:
Title: Re: Jøkelbugt / North East Greenland
Post by: Shared Humanity on August 15, 2014, 02:22:52 PM
This area is FYI, right?
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on August 15, 2014, 04:19:56 PM
This area is FYI, right?

Yes, 99%, just a fraction was left from last season in the middle, not along the coast.
Title: Re: Jøkelbugt / North East Greenland
Post by: Andreas T on August 15, 2014, 11:13:38 PM
i think that some of it is ice which drifted there from up north and froze together in October but other parts kept breaking open and formed new ice as late as December. This explains differences in break up now and appearence earlier. The ice which formed later would have had less snow cover wich did melt sooner.(https://forum.arctic-sea-ice.net/proxy.php?request=http%3A%2F%2Focean.dmi.dk%2Farctic%2Fimages%2FMODIS%2FJoekelbugt%2F201312020601.NOAA.jpg&hash=0d6bf250e5202ef1197efc51f6cb07af)
This is an IR image from 2.Dec 2013 http://ocean.dmi.dk/arctic/images/MODIS/Joekelbugt/201312020601.NOAA.jpg (http://ocean.dmi.dk/arctic/images/MODIS/Joekelbugt/201312020601.NOAA.jpg)
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on August 31, 2014, 12:53:18 PM
The Untouchable seems to survive another year, this little fast ice island (off-shore) was the only fast ice that survived along the whole north east coast of Greenland  in the melting season of 2013, the "island" is marked with a * :
Title: Re: Jøkelbugt / North East Greenland
Post by: Shared Humanity on August 31, 2014, 02:39:35 PM
Can you please explain that. Is there a small island there?
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on August 31, 2014, 08:06:58 PM
Can you please explain that. Is there a small island there?

Shared Humanity,
No it is not a real island, but a piece of sea ice or more likely former glacier ice, and be because of the shallow water in the area it is somehow grounded there.
Title: Re: Jøkelbugt / North East Greenland
Post by: Sonia on September 18, 2014, 10:22:42 PM
Nice clear view of the Belgica Bank today.  Quite a bit of ice is still holding fast!
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on September 19, 2014, 06:59:03 PM
Hello Sonia,

The Belgica Bank survived, on a larger scale than I expected and "The Untouchable" is still there!
Title: Re: Jøkelbugt / North East Greenland
Post by: Wipneus on April 15, 2015, 07:58:29 AM
Some of the sea ice in front of Jøkelbugt has broken of. Early?

(pls click to animate)
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on April 16, 2015, 08:42:04 PM
Some of the sea ice in front of Jøkelbugt has broken of. Early?

(pls click to animate)

Yeas at many points we are closer to the coast than recent earlier years.
Title: Re: Jøkelbugt / North East Greenland
Post by: Neven on April 16, 2015, 11:46:26 PM
That looks interesting...
Title: Re: Jøkelbugt / North East Greenland
Post by: Wipneus on April 20, 2015, 09:01:22 AM
More ice breaking off.
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on August 21, 2015, 06:41:41 PM
The "fast" ice off Jøkelbugt is really getting a punch at the moment:
Title: Re: Jøkelbugt / North East Greenland
Post by: Wipneus on September 04, 2015, 08:33:57 AM
That fast ice is still hanging around, due to almost total absence of movements in the Fram, although most of it is not so "fast" anymore.
Title: Re: Jøkelbugt / North East Greenland
Post by: Wipneus on September 23, 2015, 08:25:00 AM
A giant slab of formerly fast ice is sliding southward.

(click!)
Title: Re: Jøkelbugt / North East Greenland
Post by: Wipneus on July 31, 2016, 05:43:26 PM
Sequence made from Terra/MODIS images of 29,30 and 31th of July. The former fast ice is now moving counter-current between the main land and a piece of fast ice grounded on Belgica Bank (if I am not mistaken).
Title: Re: Jøkelbugt / North East Greenland
Post by: Andreas T on August 03, 2016, 08:58:21 PM
I don't have the skill to make an animated sequence but toggling between the last 4 days on worldview shows a dramatic lunge eastwards in the icebergs calved from Zachariae over the last few years and also further south east where an opening starts to be made between the islands which have held the older melange in place since 2013.
try it for yourself at
http://go.nasa.gov/2aNM5uy (http://go.nasa.gov/2aNM5uy)
This could be another year of open water at the calving front.
Title: Re: Jøkelbugt / North East Greenland
Post by: Andreas T on August 19, 2016, 09:45:21 PM
Polarstern is taking profiles along the top of belgica bank it seems. Pity there are no current reports from the ship.

Air and water temperatures are here http://www.sailwx.info/shiptrack/shipposition.phtml?call=DBLK (http://www.sailwx.info/shiptrack/shipposition.phtml?call=DBLK)
Title: Re: Jøkelbugt / North East Greenland
Post by: Andreas T on August 20, 2016, 10:44:42 PM
This place keeps surprising again and again this year. Some places are moving back and forth while other place move  forth and back (in antiphase ). When not much seems to be changing suddenly another part of ice gets going. 
at the southern end of Joekelbugt  there is this plume of sediment laden water which flips north and south quite dramatically when there seems to be little reason for water moving along the coast which I find quite intriguing. Where is this stuff coming from? is there more of this coming out under the calving front?
Title: Re: Jøkelbugt / North East Greenland
Post by: johnm33 on August 20, 2016, 11:09:43 PM
They're not huge, maybe 1m, but the tides are peaking just now.
http://www.tide-forecast.com/locations/Cape-Borgen-Greenland/tides/latest (http://www.tide-forecast.com/locations/Cape-Borgen-Greenland/tides/latest) this is from a couple of degrees south
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on September 05, 2019, 12:10:47 PM
This is something that doesn't happen often, but within hours from now the real fast ice in Jøkelbugt will be gone: Fast ice is becomming very rare in and around Greenland, the only fast ice left, to speak about is in the mouth of the Independence Fjord system.

Fast ice is sea ice that is more than one season old!
Title: Re: Jøkelbugt / North East Greenland
Post by: blumenkraft on September 05, 2019, 05:43:07 PM
Espen, is there a name for landfast ice younger than that?
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on September 05, 2019, 05:49:42 PM
It is called sea ice
Espen, is there a name for landfast ice younger than that?
Title: Re: Jøkelbugt / North East Greenland
Post by: Espen on September 11, 2019, 07:16:30 PM
The last remaining offshore fast ice in the Northern Hemisphere, I know about, nicknamed "The Untouchable" did survive longer than I anticipated, but I am convinced it will disappear for the first time this season since 2003 , the reason for why it is stucked there is because of the very shallow water in that area, underneath there is a very extensive sandbank called Belgica Banke, and frozen together with many (+70) old grounded glacier icebergs the sea ice becomes very strong and almost impossible to break up.
Why is this phenomena so interesting? Remember not far from here we have the large Zachariae Isstrøm, and my studies show that the breakup of all sea ice in front of and inside Jøkelbugt in 2001 to  2003 started the massive break up and retreat of Zachariae Isstrøm in the years thereafter, but anyway it will be interesting to see if "The untouchable" will rebuild its strength over the winter, it will depend on the amount of glacier icebergs available.