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Author Topic: The Nares Strait thread  (Read 450305 times)

uniquorn

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Re: The Nares Strait thread
« Reply #1350 on: December 11, 2018, 11:31:06 PM »
So the big floe looks like it popped out like a cork over the last 3 days.
Worldview, viirs bt15n, dec5-10
Polarview dec11

Brigantine

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Re: The Nares Strait thread
« Reply #1351 on: January 04, 2019, 12:32:01 AM »
I thought I remembered a formation equivalent list, but I can't find it. Just that it is normally in "January/February".

[...] approx. breakup times, southern "arch" in Kane Basin unless noted otherwise:
[...] I should note - as can be inferred from the numbers - that the dates are somewhat rounded:

2007 - No arches formed.
2008 - June 10th(?)
2009 - No southern arch. Northern arch broke around June 30th.
2010 - July 10th
2011 - July 5th.
2012 - June 30th.
2013 - July 10th.
2014 - June 20th.
2015 - July 5th.
2016 - June 30th
2017 - No southern arch. Northern arch broke around May 10th.
2018 - June 30th.

oren

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Re: The Nares Strait thread
« Reply #1352 on: January 04, 2019, 05:18:06 AM »
I thought I remembered a formation equivalent list, but I can't find it. Just that it is normally in "January/February".

[...] approx. breakup times, southern "arch" in Kane Basin unless noted otherwise:
[...] I should note - as can be inferred from the numbers - that the dates are somewhat rounded:

2007 - No arches formed.
2008 - June 10th(?)
2009 - No southern arch. Northern arch broke around June 30th.
2010 - July 10th
2011 - July 5th.
2012 - June 30th.
2013 - July 10th.
2014 - June 20th.
2015 - July 5th.
2016 - June 30th
2017 - No southern arch. Northern arch broke around May 10th.
2018 - June 30th.
I will try to come up with such a database. It's more complicated as visual WorldView is not available during the dark months.

Jim Hunt

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Re: The Nares Strait thread
« Reply #1353 on: January 04, 2019, 02:21:37 PM »
It's more complicated as visual WorldView is not available during the dark months.

However: https://go.nasa.gov/2Tqp973
Reality is merely an illusion, albeit a very persistent one - Albert Einstein

oren

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Re: The Nares Strait thread
« Reply #1354 on: January 04, 2019, 02:34:30 PM »
Thank you Jim!

Espen

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Re: The Nares Strait thread
« Reply #1355 on: January 04, 2019, 03:28:00 PM »
Or Sentinel 1:
Have a ice day!

oren

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Re: The Nares Strait thread
« Reply #1356 on: January 04, 2019, 04:47:02 PM »
Espen thanks, I actually prefer Sentinel. But is there a link that can provide a direct animation of Sentinel, in the style of Worldview? I usually access Sentinel images via the DMI web site, and while quite useful for short term work it's very tedious when comparing tens or hundreds of images.

Tor Bejnar

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Re: The Nares Strait thread
« Reply #1357 on: January 04, 2019, 08:57:52 PM »
Oren,
I think the answer is "No," but my computer has a program - Snagit - that can be used for a few screens.  I click from screen to screen about a second per frame.  The resulting MP4 shows floes are still moving [below - I wish I could make the image smaller...].  I can save the separate images within the MP4 as PNGs with exact same boundaries.

The far end from rocket science.  At work I'm limited to software they give me, and at home I'm a cheapskate.
Arctic ice is healthy for children and other living things.

Espen

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Re: The Nares Strait thread
« Reply #1358 on: January 04, 2019, 11:06:55 PM »
The far end from rocket science.  At work I'm limited to software they give me, and at home I'm a cheapskate.

Tor,
When handling the Sentinel image data, in this case the initial image a .TIF is >GB, you need a good editor to handle images this size, I use Photoshop CC 2017 (too lazy to download the new version) but it is far from the cheapest available, but the GIF animators are usually for free and very easy to use.
Have a ice day!

uniquorn

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Re: The Nares Strait thread
« Reply #1359 on: January 06, 2019, 08:39:35 PM »
New fractures. edit: Worldview,viirs,bt15,night,jan6-7  https://go.nasa.gov/2FcfPR7
« Last Edit: January 07, 2019, 10:38:23 AM by uniquorn »

uniquorn

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Re: The Nares Strait thread
« Reply #1360 on: January 11, 2019, 11:55:25 AM »
Looking a bit weak beyond the next arch.
Worldview,viirs,bt15,night,jan9-11