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Author Topic: Arctic Image of the Day  (Read 558062 times)

binntho

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Re: Arctic Image of the Day
« Reply #1600 on: August 16, 2019, 02:44:00 AM »
I can't be sure, but to my eye it appears as though there is a very seep mountain between those two glaciers...I want to investigate on my own now.

I don't think that's possible, since the last of the three images that petm posted above clearly shows a river flowing in that area, so a deep river-cut valley is much more likely.

If it's something along the lines of a steep-banked canyon or river valley, that might explain the apparently "bitten off" end of the smaller glacier being the result of a collapse of the canyon wall.
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pearscot

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Re: Arctic Image of the Day
« Reply #1601 on: August 16, 2019, 02:51:10 AM »
I can't be sure, but to my eye it appears as though there is a very seep mountain between those two glaciers...I want to investigate on my own now.

I don't think that's possible, since the last of the three images that petm posted above clearly shows a river flowing in that area, so a deep river-cut valley is much more likely.

If it's something along the lines of a steep-banked canyon or river valley, that might explain the apparently "bitten off" end of the smaller glacier being the result of a collapse of the canyon wall.

yea, that's probably it...no matter what it is there appear to be super steep slopes which clearly stop the glacier from forming around it. I'm going to do more research into that feature because it has piqued my interest and that's such a unique formation.
pls!

Stephan

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Re: Arctic Image of the Day
« Reply #1602 on: August 16, 2019, 09:23:32 PM »
According to Google Earth there is a steep canyon-like valley S of that "gap". It seems that the once "united" glaciers has been divided by the melting water of that little river which flows through that valley. Older, but not very precise photos from the 1990s show an intact glacier. Around 2005 a large melt water lake has formed N/NE of that now "orphaned" part of the glacier which had drained afterwards, leading to that "gap".
_______
[You can look at older photographs in Google Earth by using the "historic picture button"]

Klon

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Re: Arctic Image of the Day
« Reply #1603 on: August 16, 2019, 10:41:08 PM »
Foggy view of Sverdrup Channel area.

binntho

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Re: Arctic Image of the Day
« Reply #1604 on: August 17, 2019, 06:56:09 AM »
According to Google Earth there is a steep canyon-like valley S of that "gap". It seems that the once "united" glaciers has been divided by the melting water of that little river which flows through that valley. Older, but not very precise photos from the 1990s show an intact glacier. Around 2005 a large melt water lake has formed N/NE of that now "orphaned" part of the glacier which had drained afterwards, leading to that "gap".
_______
[You can look at older photographs in Google Earth by using the "historic picture button"]

I saw a similar thing happening early this century back in Iceland. Many of you who have visited Iceland will have seen the Jokulsarlon lake where the calved icebergs float around and are even flushed out to sea.

To the west of this lake there are a couple of other similar lakes such as Fjallsarlon which I used to visit evey time I could from 1991 up to 2008, and more sporadically since.

The first image shows the three lakes, the glaciers are all retreating fast and the lakes are growing, but the really dramatic changes that I saw happening were finished by 2008, which is the last time that I stopped and had a proper look.

That visit in 2008 I had a GPS for the first time, and I noticed that according to the map on the GPS I was actually parking my car on the glacier itself! In the second image I've marked my usual "parking spot" with a red cross, and the appr. glacier edge as shown on the GPS with a green line.

The yellow path shows where I used to walk up onto the glacier itself, the last time I did that would have been around 1996 or 7. The glacier was very smooth and flat in that area, simply because it had stopped moving and was just melting down.

The area of interest for this discussion is marked with a black circle. The small glacier tongue to the left used to merge with the larger one, and did so until about 15-20 years ago. The material underlying these glacier tongues once they reach flat land is mostly a huge pile of gravel and mud that the glaciers have been carrying down from above, and once the ice was removed from the top of this pile, the waters coming from further up started to carve it's way down through the rubble.

When I was there in perhaps 2004 I noticed that a very large canyon had suddenly appeared in the middle of the black circle, the following year it was gone since the canyon walls were essentially just gravel and mud, and the whole pile had probably just been washed away.

The third attachment is a photo I found on the internet after a surprisingly long search, unfortunately if you search for "Fjallsarlon" you get pictures of "Jokulsarlon" instead, it takes a local to tell the difference. The position and viewpoint of the photo is marked with a couple of brown thin lines in the second image. 30 years ago, the photographer would have been standing on the ice itself.
« Last Edit: August 17, 2019, 07:03:15 AM by binntho »
because a thing is eloquently expressed it should not be taken to be as necessarily true
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Alphabet Hotel

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Re: Arctic Image of the Day
« Reply #1605 on: August 18, 2019, 11:38:42 PM »
I thought this image came out pretty good. I was just trying to capture the patterns in this whole stretch of melting ice but there's a lot more to look at, like the patterns in the rocks and the algae blooms starting along the shore.

charles_oil

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Re: Arctic Image of the Day
« Reply #1606 on: August 19, 2019, 04:08:00 PM »
Thanks Alphabet - where is this ?


Alphabet Hotel

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Re: Arctic Image of the Day
« Reply #1607 on: August 19, 2019, 05:50:38 PM »
Thanks Alphabet - where is this ?
That's the Prince Regent Inlet, with Somerset Island above and Baffin Island below.

MyACIsDying

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Re: Arctic Image of the Day
« Reply #1608 on: August 19, 2019, 06:30:29 PM »
A large floe traveled almost 100km between Ellesmere and Axel Heiberg island, chunking off some land attached ice and splitting up after impacts with the shore. I'm curious what gave it that speed? Just to the left, at the inlet, chunks are being pulled into the Beaufort Gyre it seems.

Date start: 15-08 09:30, end 18-08 20:20 UTC
Top speed rough estimate: 0.5m/s

blumenkraft

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Re: Arctic Image of the Day
« Reply #1609 on: August 19, 2019, 06:33:57 PM »
Looks like a surface current to me. Thanks so much for sharing, MyACIsDying. Very useful information.
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jjj18641

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Re: Arctic Image of the Day
« Reply #1610 on: August 20, 2019, 01:21:43 PM »
A large floe traveled almost 100km between Ellesmere and Axel Heiberg island, chunking off some land attached ice and splitting up after impacts with the shore. I'm curious what gave it that speed? Just to the left, at the inlet, chunks are being pulled into the Beaufort Gyre it seems.

Date start: 15-08 09:30, end 18-08 20:20 UTC
Top speed rough estimate: 0.5m/s

Where do you get these amazing animations from?

MyACIsDying

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Re: Arctic Image of the Day
« Reply #1611 on: August 20, 2019, 03:11:07 PM »
Thanks both :) These are JPSS satellite images from https://rammb-slider.cira.colostate.edu, the automatic gif animator didn't work for me so I screen grabbed and stitched together the useful frames, few clouds those days luckily.

blumenkraft

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Re: Arctic Image of the Day
« Reply #1612 on: August 20, 2019, 05:08:02 PM »
Yes, the RAMMB site is not for everyone sadly. I'm using this crappy windows computer in class and RAMMB just wouldn't work with it. The memory is too slow, the processor is too weak, the monitor is shit. I'm so happy about my 8GB of speedy memory and the Retina display at home...
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blumenkraft

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Re: Arctic Image of the Day
« Reply #1613 on: August 23, 2019, 07:24:24 PM »
Puffy clouds perfectly illuminated from the side over Franklin Island.

#hach
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VeliAlbertKallio

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Re: Arctic Image of the Day
« Reply #1614 on: August 24, 2019, 02:07:32 AM »
What comes to my mind is a rock debris flow of rock over a glacier tongue.. Tunnelling is by water, not ice.  ;)

I was randomly looking at some landscape in the CAA in the Sentinel-hub and found this in the North of Devon Island (exact position can be seen in the bottom right of the picture). Unfortunately I didn't find the name of this glacier.

What are my eyes seeing here? Did the glacier carve a tunnel through the mountain or are those two completely seperate glaciers?

https://apps.sentinel-hub.com/eo-browser/?lat=76.3746&lng=-91.8694&zoom=12&time=undefined&preset=1_TRUE_COLOR&datasource=Sentinel-2%20L1C

blumenkraft

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Re: Arctic Image of the Day
« Reply #1615 on: August 25, 2019, 01:08:43 PM »
The storm over Nares Strait entrance.
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blumenkraft

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Re: Arctic Image of the Day
« Reply #1616 on: September 01, 2019, 12:59:46 PM »
🔥 These arctic polar bears being very inquisitive🔥

(via reddit/r/NatureIsFuckingLit)

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Trebuchet

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Re: Arctic Image of the Day
« Reply #1617 on: September 05, 2019, 12:19:00 AM »
  I don't kow what to say
"Now this is not the end. It is not even the beginning of the end. But it is, perhaps, the end of the beginning." W.S.Churchill

ShortBrutishNasty

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Re: Arctic Image of the Day
« Reply #1618 on: September 05, 2019, 04:09:32 AM »
Monster thanks to Blumenkraft for the well-nourished polar bear pic!!  Those were the days!!


petm

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Re: Arctic Image of the Day
« Reply #1619 on: September 05, 2019, 05:04:05 AM »
That's very distressing.



blumenkraft

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Re: Arctic Image of the Day
« Reply #1622 on: September 05, 2019, 08:09:40 PM »
Ocean current in the Amundsen Gulf.
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Niall Dollard

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Re: Arctic Image of the Day
« Reply #1623 on: September 05, 2019, 08:55:55 PM »
With Utqiagvik (Barrow) webcam still not updating, had to go elsewhere to get Arctic webcam.

This one from Svalbard shows snow down to sea level at Longyearbyen

 https://www.spitsbergen-svalbard.com/photos-panoramas-videos-and-webcams/spitsbergen-webcams.html

Niall Dollard

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Re: Arctic Image of the Day
« Reply #1624 on: September 06, 2019, 07:08:56 PM »
Monster thanks to Blumenkraft for the well-nourished polar bear pic!!  Those were the days!!



Yes that one was distressing and doing the rounds a lot on social media. It first appeared on NG at the end of Dec 2017.

Since then the text on the video has been edited by National Geographic :

"The text on the video above was edited on June 1, 2018 to make it clear that it is impossible to know why the polar bear pictured was starving. An earlier version of the video went too far in suggesting that climate change was responsible ( read more ). This story was updated on January 19, 2018 to reflect the more specific location of where the photographs were taken."

https://www.nationalgeographic.com/news/2017/12/starving-polar-bear-video-climate-change-spd/
« Last Edit: September 06, 2019, 07:31:29 PM by Niall Dollard »

Klon

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Re: Arctic Image of the Day
« Reply #1625 on: September 09, 2019, 06:24:53 PM »
Today on Worldview (North Pole is left center)

Niall Dollard

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Re: Arctic Image of the Day
« Reply #1626 on: September 09, 2019, 06:49:03 PM »
Today on Worldview (North Pole is left center)


Have a look at the same area, same date for 2016. (The comparison tool is great).

I had forgotten how bad it was in 2016. Right up to the pole.

jplotinus

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Re: Arctic Image of the Day
« Reply #1627 on: September 12, 2019, 04:36:38 PM »
Longyearbyen, Svalbard, webcam back up after a few days’ outage. Was snow covered on September 4, prior to cam going down; now snow feee as of September 12, with cam back up and running:


pikaia

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Tor Bejnar

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Re: Arctic Image of the Day
« Reply #1629 on: September 20, 2019, 09:28:52 PM »
Numerous photos-from-an-airplane of Zachariae Isstrøm (northeast Greenland glacier) starting with this link.
In cooperation with the Operation Ice Bridge Team and especially Sea Ice Scientist Linette Boisvert NASA who sent me many images and a few videos from their trip across Zachariae Isstrøm on September 5 2019, the delay in the publishing is due to the poor internet band width at Thule Airbase.
We start this round of images from the top of Zachariae Isstrøm including the giant meltponds then passing the calving front across the Zach Bay and at the end we reach the former glacier tongue of Zachariae Isttrøm, now a death piece of glacier ice, enjoy and again thanks to Linette:
[Click on the "Quote from: Espen …" line.]
Arctic ice is healthy for children and other living things.