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Author Topic: Arctic Image of the Day  (Read 354182 times)

greatdying2

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Re: Arctic Image of the Day
« Reply #1000 on: August 01, 2017, 02:56:55 AM »
Quite a nice way to have a look at the shape of the ice below (what would otherwise be) the water line.
The Permian–Triassic extinction event, a.k.a. the Great Dying, occurred about 250 million years ago and is the most severe known extinction event. Up to 96% of all marine species and 70% of terrestrial vertebrate species became extinct; it is also the only known mass extinction of insects.

numerobis

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Re: Arctic Image of the Day
« Reply #1001 on: August 01, 2017, 04:46:31 AM »
You can actually see the melt line on this ice which became exposed as the tide went out and the ice grounded.

You can see one melt line. There are often several. When the ice blew in, you'd see some ice hoodoos floating in, high above the water -- clearly a remnant of a water line. When the tide receded you'd see the main water line, and sometimes there would be more water lines below. I'm assuming this ice is this thick due largely to getting stacked up on itself.

Some of last weeks ice chunks were house-sized, probably 5m tall and 20x20m or so. They looked solid, not stacked; they made straight vertical cracks through the ice chunks.

First-year ice is sought after for margaritas. It's the perfect grainy texture and saltiness. Had my first on Saturday night.

greatdying2

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Re: Arctic Image of the Day
« Reply #1002 on: August 01, 2017, 05:52:58 AM »
First-year ice is sought after for margaritas. It's the perfect grainy texture and saltiness. Had my first on Saturday night.
Better keep that hush hush. If word gets out, it could easily lead to an extra century break.  ;D ;D
The Permian–Triassic extinction event, a.k.a. the Great Dying, occurred about 250 million years ago and is the most severe known extinction event. Up to 96% of all marine species and 70% of terrestrial vertebrate species became extinct; it is also the only known mass extinction of insects.

Pavel

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Re: Arctic Image of the Day
« Reply #1003 on: August 01, 2017, 08:31:58 AM »
A beautiful view of the East Siberian Sea yesterday

Thawing Thunder

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Re: Arctic Image of the Day
« Reply #1004 on: August 02, 2017, 01:12:45 AM »
... while over the Kara Sea is whirling a little storm.

silkman

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Re: Arctic Image of the Day
« Reply #1005 on: August 05, 2017, 10:19:17 AM »
Open water at Eureka on Ellesmere this morning. Currently 2C.

oren

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Re: Arctic Image of the Day
« Reply #1006 on: August 05, 2017, 12:37:05 PM »
Open water at Eureka on Ellesmere this morning. Currently 2C.
Nice. Where do you get this image? Is there a webcam?

silkman

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Re: Arctic Image of the Day
« Reply #1007 on: August 05, 2017, 10:29:30 PM »

Adam Ash

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Re: Arctic Image of the Day
« Reply #1008 on: August 06, 2017, 05:12:29 AM »
From a Total press release:




From the Northern Sea Route thread, something for you image sleuths.

Could one be forgiven for imagining that the  Christophe de Margerie is running astern in that photo?  Else the ice is healing up very quickly behind her, and opening obligingly ahead!

https://www.marinetraffic.com/en/ais/details/ships/212611000

The sun/shadow angle looks about right for travelling towards Bering Straight at around 10:00hrs.  (If its 22:00hrs then she's going the wrong way, yes Ship Tracker shows her approaching Bering Straight)

slow wing

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Re: Arctic Image of the Day
« Reply #1009 on: August 06, 2017, 05:26:44 AM »
Adam, yes the ship is going backwards!

It is a double acting ship: https://en.wikipedia.org/wiki/Double_acting_ship

"The propulsion system of the new gas carrier consists of Azipod type propulsion units. They provide a very high degree of manoeuvrability, and allow use of the stern-first motion (Double Acting Tanker, DAT function) principle, which is necessary to overcome hummocks and heavy ice fields. Uniquely Christophe de Margerie has three Azipods – this is the first time so many of these propulsion units have been installed on an Arctic ice class vessel."
http://www.hellenicshippingnews.com/unique-ice-breaking-lng-carrier-christophe-de-margerie-ready-to-serve-yamal-lng-project/


In thick ice, it is faster when going backwards!

"The stern section is designed to enable navigation in severe ice conditions.
The double-acting tanker capability allows the vessel to break heavy ice in both bow and astern manuoevres.
The vessel proved her capability to move stern-first in 1.5 metres thick ice at a speed of 7.2 knots (target figure was 5 knots) and head-on at a speed of 2.5 knots (target figure was 2 knots)"
http://www.ship-technology.com/projects/christophe-de-margerie-class-icebreaking-lng-carriers/



« Last Edit: August 06, 2017, 05:38:55 AM by slow wing »

Adam Ash

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Re: Arctic Image of the Day
« Reply #1010 on: August 07, 2017, 03:38:05 AM »

magnamentis

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Re: Arctic Image of the Day
« Reply #1011 on: August 07, 2017, 11:56:56 AM »
Adam, yes the ship is going backwards!

It is a double acting ship: https://en.wikipedia.org/wiki/Double_acting_ship

"The propulsion system of the new gas carrier consists of Azipod type propulsion units. They provide a very high degree of manoeuvrability, and allow use of the stern-first motion (Double Acting Tanker, DAT function) principle, which is necessary to overcome hummocks and heavy ice fields. Uniquely Christophe de Margerie has three Azipods – this is the first time so many of these propulsion units have been installed on an Arctic ice class vessel."
http://www.hellenicshippingnews.com/unique-ice-breaking-lng-carrier-christophe-de-margerie-ready-to-serve-yamal-lng-project/


In thick ice, it is faster when going backwards!

"The stern section is designed to enable navigation in severe ice conditions.
The double-acting tanker capability allows the vessel to break heavy ice in both bow and astern manuoevres.
The vessel proved her capability to move stern-first in 1.5 metres thick ice at a speed of 7.2 knots (target figure was 5 knots) and head-on at a speed of 2.5 knots (target figure was 2 knots)"
http://www.ship-technology.com/projects/christophe-de-margerie-class-icebreaking-lng-carriers/


perhaps i overlooked, then sorry, but it seems noteworthy that latest those pods/props can be used to crash the ice, with the props themeselves while before recently props had to be protected by either hardware appliances and/or hull shape to produce the right flow to steer the ice clear of the props and/or rudder if there is one (does not apply to pod equiped propulsion systems of course)
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TerryM

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Re: Arctic Image of the Day
« Reply #1012 on: August 09, 2017, 11:08:52 PM »


Verg !!
Hope you're back for a while.
You've been missed.
Terry

philiponfire

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Re: Arctic Image of the Day
« Reply #1013 on: August 10, 2017, 12:13:36 PM »
A big chunk fell off the Petermann 26th/27th July and I missed it!

oren

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Re: Arctic Image of the Day
« Reply #1014 on: August 11, 2017, 07:51:12 AM »
Check the Petermann thread in the Greenland sub-forum and you'll never miss calvings again  8)

jplotinus

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Re: Arctic Image of the Day
« Reply #1015 on: August 12, 2017, 06:58:26 PM »
Near 85°N, melt pond or polynya(?) formed between August 11 and August 12 (needs click):


Peter Ellis

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Re: Arctic Image of the Day
« Reply #1016 on: August 12, 2017, 07:28:44 PM »
You mean the dark line in the centre of the picture that's obviously a shadow of some kind?  You can see the floes within it, so it's not a polynya.  It causes even darkening across both the water and ice, so it's not melt ponding. It's a shadow.

Andreas T

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Re: Arctic Image of the Day
« Reply #1017 on: August 12, 2017, 09:32:04 PM »
It is also worth checking the false  colour images using near infrared channels such as 3,6,7 bands https://go.nasa.gov/2vZiF7I which show up clouds against ice (ice red, clouds white)

maga

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Re: Arctic Image of the Day
« Reply #1018 on: August 17, 2017, 08:32:58 PM »
I always thought this glacier near Kangerlussuaq is boring and ugly. Not anymore! Quite impressive moraines from which the glacier is starting to retreat. From what I can tell, the north arm will retreat sooner and faster because it appears to be thinner.

maga

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Re: Arctic Image of the Day
« Reply #1019 on: August 17, 2017, 09:47:35 PM »
By the way: The moraine may still be from the little ice age. There was no other one around and it looked like the glacier was shearing off the hill side. So retreat may have a significant delay but potential for large increases...

FishOutofWater

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Re: Arctic Image of the Day
« Reply #1020 on: August 18, 2017, 01:21:15 AM »
An apparent warm core "polar low", the Arctic's version of a tropical storm, formed in the middle of Baffin bay. Its location, strictly over water, and its non-frontal structure indicate that it is a warm core, thermodynamic storm. The ocean heat that's driving this storm and the seas that it churns up will melt any remaining sea ice in Baffin bay.

numerobis

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Re: Arctic Image of the Day
« Reply #1021 on: August 18, 2017, 03:50:58 PM »
Very pretty!

There's little ice there anyway; it's mostly further South in Davis Strait, or further North in Nares Strait. But what little ice is in the southern end of Baffin Bay is predicted to move 18 miles further South today. Ice moving at 1.3 km/h is pretty impressively fast!

What's damaging down here is beautiful sun forecast for the next several days. Perfect weather to warm up that water.

FishOutofWater

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Re: Arctic Image of the Day
« Reply #1022 on: August 18, 2017, 04:59:01 PM »
Summer lasts much longer where the last ice remains than it does in the Arctic's central pack. The sun and heat will do it in.

That beautiful little storm is helping to speed up the warm current that runs up the coast of Greenland and the cold current that runs down the coast of Canada. The reason the ice lasted so long is that a very large volume of cold fresh water and sea ice has moved south since last summer.

A-Team

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Re: Arctic Image of the Day
« Reply #1023 on: August 19, 2017, 10:49:28 PM »
Here is an account scanned from Life Magazine written by the skipper of a submarine surfacing at the North Pole, a story often misrepresented on climate denier sites ...

http://TinyURL.com/Skate90DegNorth

Jim Hunt

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Re: Arctic Image of the Day
« Reply #1024 on: August 19, 2017, 11:00:26 PM »
Here is an account scanned from Life Magazine


A story always misrepresented on climate denier sites:

http://GreatWhiteCon.info/2015/02/shock-historical-news-towing-in-at-the-north-pole-in-1958/
Reality is merely an illusion, albeit a very persistent one - Albert Einstein

oren

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Re: Arctic Image of the Day
« Reply #1025 on: August 20, 2017, 12:37:52 AM »
Thank you A-Team. Very interesting reading.

Greenbelt

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Re: Arctic Image of the Day
« Reply #1026 on: August 26, 2017, 10:20:45 PM »
This picture will update, but as of 8/26 20utc a very nice picture from our CAA obuoy

Andreas T

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Re: Arctic Image of the Day
« Reply #1027 on: August 27, 2017, 03:35:26 PM »
to keep (another) nice image here is a downloaded shot form (local) yesterday evening
105west means UTC-7

Pavel

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Re: Arctic Image of the Day
« Reply #1028 on: August 31, 2017, 09:34:12 AM »
The summer snowfalls in Siberia, not even the north Siberia
https://www.instagram.com/p/BYaj_59lOFv/

Adam Ash

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Re: Arctic Image of the Day
« Reply #1029 on: September 01, 2017, 07:12:01 AM »
This picture will update, but as of 8/26 20utc a very nice picture from our CAA obuoy

Remarkable, I think, to see so much evidence of slush, eddies and jostling of floes.  Lots of compaction and minor stacking and the edge of the local pack part-way to the horizon looks like it is being worked on by wave action.
 
Compare with the next image posted by Andreas where it is back to the usual millpond. 

TerryM

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Re: Arctic Image of the Day
« Reply #1030 on: September 02, 2017, 06:59:10 PM »
The summer snowfalls in Siberia, not even the north Siberia
https://www.instagram.com/p/BYaj_59lOFv/
Unseasonable & beautiful
Thanks
Terry

Niall Dollard

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Re: Arctic Image of the Day
« Reply #1031 on: September 06, 2017, 11:41:20 PM »
Sentinel Image 05th Sept'17 near Hall Land, NW Greenland. Brown snow, new ice and old ice in the bay.

numerobis

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Re: Arctic Image of the Day
« Reply #1032 on: September 24, 2017, 07:45:10 PM »
It's snowing today in Iqaluit. Winter is coming!

Meanwhile, Montreal canceled the marathon due to heat.

Vergent

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Re: Arctic Image of the Day
« Reply #1033 on: September 27, 2017, 02:28:21 PM »

Shared Humanity

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Re: Arctic Image of the Day
« Reply #1034 on: September 27, 2017, 06:10:40 PM »
Open water photo is from where?

Peter Ellis

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Re: Arctic Image of the Day
« Reply #1035 on: September 27, 2017, 06:34:23 PM »
USS Healy, currently in the middle of the Beaufort sea. Both links give Healy's latest reported position, second link additionally shows the ice edge.
https://icefloe.net/uscgc-healy-track-map
http://www.sailwx.info/shiptrack/shipposition.phtml?call=NEPP

Pavel

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Re: Arctic Image of the Day
« Reply #1036 on: October 02, 2017, 11:30:43 PM »
Polar Bears on the Wrangel Island, 19 of September
https://vk.com/wall-140300488_116



Coffee Drinker

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Re: Arctic Image of the Day
« Reply #1037 on: October 03, 2017, 04:03:46 AM »
OMG what an amazing picture. Had no idea they can come in such numbers. First thought those are sheep.

Shared Humanity

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Re: Arctic Image of the Day
« Reply #1038 on: October 04, 2017, 03:14:25 PM »
Is that a whale they are devouring? Could this be a reason for Polar Bears congregating? I cannot fathom that Bears killed the whale so it must have died and washed up on shore.

Or it's not a whale in which case I should be dismissed.

gerontocrat

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Re: Arctic Image of the Day
« Reply #1039 on: October 04, 2017, 03:17:34 PM »
I am not prepared to dismiss that it is a whale. They do come in different sizes from large to enormous.
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oren

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Re: Arctic Image of the Day
« Reply #1040 on: October 04, 2017, 03:26:46 PM »
It seemed like a whale to me as well, but I was too afraid to ask...

crandles

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Re: Arctic Image of the Day
« Reply #1041 on: October 04, 2017, 04:15:07 PM »
Is that a whale they are devouring?

Seems likely
https://www.livescience.com/60569-polar-bears-feast-on-whale-carcass.html

(Or translate page linked by Pavel above which suggests it is a bowhead whale.)

Pavel

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Re: Arctic Image of the Day
« Reply #1042 on: October 08, 2017, 05:30:16 PM »
A chukchi man.

More pictures here https://ria.ru/society/20171003/1506026173.html

Some beautiful pictures of the FJL
http://ru.arctic.ru/infographics/20170926/674371.html

Niall Dollard

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Re: Arctic Image of the Day
« Reply #1043 on: October 09, 2017, 08:11:53 PM »
Two contrasting screen grabs from the Barrow/Utqiaġvik webcam.

The first, taken at the end of September shows the coast being inundated by storm waves. The sea has broken well inside the storm defences. Something that is becoming far more common on the Alaskan north coast.

The second (8th Oct) shows Barrow developing its snow cover.

numerobis

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Re: Arctic Image of the Day
« Reply #1044 on: October 15, 2017, 11:08:20 PM »
South Baffin is coated in snow now after last night's blizzard (which fell on top of a blizzard a couple weeks ago), and kids are playing street hockey in the snow:


Rosy-cheeked and fierce: a trio of girls in Pangnirtung celebrates World Girls' Hockey Weekend with a scrimmage on snow Oct. 7. This is the second year Pangnirtung has participated in the girls hockey event and, according to local reports, it has been popular. World Girls Hockey Weekend, Oct. 6 to Oct. 8 this year, was launched by the International Ice Hockey Federation and Hockey Canada to help celebrate and grow the female game across the country and around the world. (PHOTO BY DAVID KILABUK)


Friday there was a polar bear in Iqaluit. My partner and I have been walking a friend's dogs right by where the bear was spotted, it's only a couple hundred meters from the nearest homes. Poor bear was shot pretty quickly thereafter.