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Author Topic: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland  (Read 19866 times)

Espen

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Where the 2 great glaciers L. Bistrup Bræ and Storstrømmen meet, big cracks have been seen on several Modis images over some time now. Last melt season, we saw substantial melting in this area resulting in Borgfjorden reaching further inland and even Bræ Øerne was almost free of surrounding ice at the end of the melting season 2012, it will be interesting to follow  this area over the next coming months.
« Last Edit: July 26, 2013, 11:09:12 AM by Espen »
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / North East Greenland
« Reply #1 on: June 20, 2013, 01:25:22 PM »
Following images show the relatively large calving from the 2012 season at Brede Bræ into Borgfjorden and Dove Bugt.
It will be interesting to follow the further retreat of this junction glacier ( Storstrømmen / L. Bistrup Bræ) in the coming seasons.
Note the poor snow/ ice condition on the southern part of the image (2012) of L. Bistrup Bræ.
All 3 images (2009,2010 and 2012) are from the same period of the years August - September.
« Last Edit: June 20, 2013, 02:33:49 PM by Espen »
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / North East Greenland
« Reply #2 on: June 20, 2013, 01:56:42 PM »
The red lines indicate cracking lines and the area of Brede Bræ, Borgfjorden / Dove Bugt encroached upon in the melting season of 2012.

The area of the part of Bredebræ that disappeared in 2012 is +/- 10 km2.
And the length or the width depending how you look at it was reduced from +/- 14 km to only +/- 10 km (see below). 

""Bredebræ  76Ø-107 (76°42.0'N 22°48.0'W) Broad glacier at the head of Borgfjorden, formed by the confluence of Storstrømmen and L. Bistrup Bræ; it produces many large icebergs. Named as Brede Bræ by the 1906-08 Danmark-Ekspeditionen. (Broad Glacier, Brede Glacier, Breidijökull.) From GEUS Copenhagen""
« Last Edit: June 20, 2013, 03:00:11 PM by Espen »
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / North East Greenland
« Reply #3 on: June 25, 2013, 04:19:37 PM »
Here is an animation of the calving event at Bredebræ in July - August 2012, it is pretty heavy so be patient and keep an eye on this part of Greenland the next couple of months!

https://docs.google.com/file/d/0B_a0Tecpig0jSVAwSnpmZ3Bsc0k/edit?usp=sharing
« Last Edit: June 25, 2013, 04:53:48 PM by Espen »
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt /North East Greenland
« Reply #4 on: June 28, 2013, 11:07:44 AM »
Dove Bugt / North East Greenland:

The disintegration of the fast ice is underway, a large piece went of today:
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt /North East Greenland
« Reply #5 on: June 29, 2013, 12:17:37 PM »
New image showing the calving line at Storstrømmen , L. Bistrup Bræ and Bredebræ.

Click on image to enlarge!
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt /North East Greenland
« Reply #6 on: July 01, 2013, 06:10:27 PM »
More fast ice is being released:
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ghoti

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt /North East Greenland
« Reply #7 on: July 01, 2013, 07:22:21 PM »
Is there any chance that the ice where buoy 2012M is will break loose this year?

Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt /North East Greenland
« Reply #8 on: July 01, 2013, 07:32:40 PM »
Ghoti;

I think 2013 is one of the years when the fast ice from Nordostrundingen in the North to Shannon Island in the south will be cleared from fast ice, so I believe Buoy 2012M will be released in the same process.
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt /North East Greenland
« Reply #9 on: July 09, 2013, 11:31:25 AM »
The 2013 melt season may be behind 2012 elsewhere, but not at the North East Coast of Greenland, I reckon we are at least 2 weeks ahead of 2012 at the time being and with much  greater melt potential than the 2012 season, I even believe the fast ice will be gone all the way up to Nordostrundingen by the end of the melt season 2013.
Below you see the latest developments in the area:
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt /North East Greenland
« Reply #10 on: July 09, 2013, 06:09:11 PM »
Dove Bugt 2012 and 2013.

Click to enlarge the image!
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt /North East Greenland
« Reply #11 on: July 12, 2013, 10:55:24 AM »
July 12 update:

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt /North East Greenland
« Reply #12 on: July 12, 2013, 11:26:47 AM »
There goes the queen's forehead...  :)
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt /North East Greenland
« Reply #13 on: July 20, 2013, 10:46:44 AM »
A "little" further south than the topic area, we find Scoresbysund Fjord. It is the largest and longest fjord system in the world and by all means very impressive. 20+ Outlet Glaciers are found inside this labyrinth of fjords the largest being Daugaard-Jensen Gletscher (5,3 km). The image below show the near sea ice free fjord:
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt /North East Greenland
« Reply #14 on: July 20, 2013, 10:59:10 PM »
Here is a better image of the Scoresbysund Fjord System.
Click on image to enlarge:
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt /North East Greenland
« Reply #15 on: July 22, 2013, 12:54:57 PM »
The glacier erosion at Bredebræ /Dove Bugt:

Black line indicates calvingfront from 2012.

Click on image to enlarge!
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt /North East Greenland
« Reply #16 on: July 24, 2013, 11:10:00 AM »
Dove Bugt update, several interesting places to be watched:
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt /North East Greenland
« Reply #17 on: July 25, 2013, 10:09:12 PM »
The fast ice in Dove Bugt will soon break up, several fissures are seen in the Bay area, 1 day max 2. And the southern limit of Fast Ice in North East Greenland, will be moved several hundred kms further north.

Fissures enhanced (photoshop)
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt /North East Greenland
« Reply #18 on: July 26, 2013, 09:05:34 AM »
Break up update, cracks enhanced by image editor, swath image only:
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #19 on: July 27, 2013, 09:47:04 AM »
As advised earlier, the breakup in Dove is speeding up, the southern fast ice limit on the East Coast is moving north, it is now north of Shannon Island:



 
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #20 on: July 27, 2013, 05:49:19 PM »
More action from Dove Bugt, please notice changes at Bredebræ:
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #21 on: August 01, 2013, 10:15:36 AM »
Strong IN SITU melting in Dove Bugt, notice how the sea ice "evaporates" into "clouds".

Please click on image to enlarge, and for better details:
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #22 on: August 08, 2013, 07:38:35 PM »
A calving is underway at L. Ibstrup Bræ, and it seems more is coming later, and we may see the birth of a navigable island "Lindhard Ø", at least I have seen no evidence of this fact in satellite history:

Please click on image to enlarge ad for better details:
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #23 on: August 14, 2013, 05:49:40 PM »
More fissures observed at Storstrømmen and L. Ibstrup Bræ/Bredebræ:

Please click on image to enlarge!
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #24 on: August 21, 2013, 10:48:25 AM »
Here is an animation showing the retreat of the fusion glaciers :Bredebræ, Storstømmen and L. Ibstrup Bræ from 2009 to 2013:
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mspelto

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #25 on: August 25, 2013, 12:55:35 PM »
Just published a piece on the Storstrømmen and L. Bistrup Brae area, any further suggestions welcome. http://glacierchange.wordpress.com/2013/08/25/storstrommen-susceptible-to-rapid-retreat/.

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #26 on: August 25, 2013, 06:02:21 PM »
Here is an animation showing the retreat of the fusion glaciers :Bredebræ, Storstømmen and L. Ibstrup Bræ from 2009 to 2013:

It sure looks like the strong melt season of 2012 set the stage for the glacier to retreat over the last 2 years. Given the dramatic melt all along the northeast coast fast ice this summer, could we see further glacier retreat next summer?

Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #27 on: August 25, 2013, 07:18:53 PM »
Hi Mauri:

Here is some additional place names from the area, great arcticle  by the way:
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #28 on: August 25, 2013, 10:08:36 PM »
Mauri,

My immediate suggestion to what we are watching at  Storstrømmen/L. Ibstrup/ Bredebræ is what we also see at Zacharia, no flux to speak of like Jakobshavn / Petermann and both areas are undermined by top and especially bottom melt.
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mspelto

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #29 on: August 25, 2013, 11:55:56 PM »
Zachariae does have a substantial flux, what makes you think much of Storstrommen is afloat?

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #30 on: August 26, 2013, 01:29:20 AM »
Mauri
Very nice explanation of the dynamics in the area. Is there bathymetry of the region other than the flyover that you mention? I'm also curious as to which glacier you think would be more likely to surge if a void should open between them.
Terry

Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #31 on: August 26, 2013, 08:02:58 AM »
Mauri,

When flipping images from year to year I don't see any movements at Storstrømmen and L. Ibstrup as is easily seen with eg. Petermann Glacier where the movement is about 1 - 2 km a year. I believe Germania Land will eventually become an island and most of Storstrømmen will be gone from Bredebræ in the south to Kofoed-Hansen Bræ in the north. Much of the top melt at both L. Ibstrup Bræ and Storstrømmen end up at Randsøen and from there it is going by rivers across to Borgfjorden and some even by tunnels? And thus breaking down as the calving we have seen over the last couple of years making Borgfjorden greater and the end of Bagfjorden (becoming a sound).
The same is seen at Zachariae the calving (disintegration) front is moving into the land, and not showing much forward movements.
« Last Edit: August 26, 2013, 08:40:05 AM by Espen »
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #32 on: August 26, 2013, 04:52:11 PM »
Zachariae does have a substantial flux, what makes you think much of Storstrommen is afloat?

I have discussed this question with some people here i Copenhagen,since there is very little data on both Storstrømmen and L. Ibstrup, but there is no evidence of Storstrømmen not being a floating glacier, and some think like me, it is at least floating north of Bræ Øerne.
Another evidence of a floating glacier is the crack across the glacier from Randsøen to Borgfjorden?
And to the head line of Mauris article "Storstrømmen Susceptible to Rapid Retreat" I completely  agree, I think the whole area from 79 in the north to L. Ibstrup in the south is worth spending some time investigating over next few seasons. And with the fast ice almost gone this season things might speed up?
« Last Edit: August 26, 2013, 06:44:54 PM by Espen »
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #33 on: September 14, 2013, 08:34:46 PM »
New updated action map more details will come:

Please click on the image for enlargement and better details, very large image!!
« Last Edit: September 16, 2013, 10:25:49 AM by Espen »
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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #34 on: May 05, 2014, 01:13:43 AM »
As you requested, Espen, i hope these satisfy.

Image 1) bedrock. But bathymetry data is sparse in the region indicated, see the suspicious long, straight contours

Image 2) surface

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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #35 on: June 13, 2014, 06:20:57 PM »
One of the "lazy dogs" of glaciers, Bredebræ aka Storstrømmen (to the north) and L. Ibstrup Bræ (to the south) is waking up, but it is another place where I expect some actions in the future:

Please click on image to start animation!
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #36 on: July 07, 2014, 09:52:56 PM »
Here is another reminder animation showing a span of 40 years, with somehow not expected results?

Please click on the image to start animation!
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #37 on: July 14, 2014, 12:40:30 PM »
Here comes the 3rd "fever" check this time from Dronning Louise Land ( North East Greenland), the 2 previous checks were from the south ( Near Kap Farvel) and from the north west (Washington Land).
The ice caps seem to hold their size, but all the 4 glaciers included in the animation below are all retreating, especially Borgjøkelen retreated some 1,800 meters:

Please click on image to start the animation.


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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #38 on: August 29, 2015, 08:49:46 PM »
A rare visitor to the calving scene, waiting for better data but here is a teaser:
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #39 on: August 30, 2015, 08:39:58 AM »
As promissed yesterday here is a rare sizeable calving at Storstrømmen /Bredebræ:
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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #40 on: September 11, 2015, 10:36:58 AM »
https://earthdata.nasa.gov/labs/worldview/?p=arctic&l=MODIS_Aqua_CorrectedReflectance_TrueColor,MODIS_Aqua_CorrectedReflectance_Bands721(hidden),MODIS_Terra_CorrectedReflectance_TrueColor,MODIS_Terra_CorrectedReflectance_Bands367(hidden),MODIS_Terra_CorrectedReflectance_Bands721(hidden),Graticule,Coastlines&t=2015-09-10&v=152523.65577353298,-884206.6790305657,327371.655773533,-801902.6790305657

Someone flagged this on another forum? Any idea what this sediment flow is and what could be the cause? If you move back you can see when(ish) the flow began ( cloud blights a few images).

Is this basal waters powering out from the ice sheet or is it some kind of slump/collapse?
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solartim27

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #41 on: September 11, 2015, 09:48:56 PM »
It looks to me that is a flushing out of accumulated silt in the valley as a lake to the right of the channel drains out.  But that could be ice that gets snowed over, as it begins to reappear on the 11th.  I can't tell if something is going on up in the valley, or if it just shadows from the mountains.
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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #42 on: September 21, 2015, 09:15:58 AM »
Good spotting that. I'm sure we'll be seeing many more examples in the coming years.

Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #43 on: February 10, 2016, 09:23:05 PM »
A minor calving is seen in the border area of Storstrømmen  and L. Ibstrup Bræ aka Bredebræ:

Click on image to enlarge and animate!
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Espen

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Re: L. Bistrup Bræ / Storstrømmen / Dove Bugt / North East Greenland
« Reply #44 on: April 02, 2016, 05:27:49 PM »
A follow up of the animation above, the iceberg created in January 2016, suddenly decided to blow up?
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