HomeLatest ThreadsGreatest ThreadsForums & GroupsMy SubscriptionsMy Posts
DU Home » Latest Threads » Forums & Groups » Topics » Science » Science (Group) » Black iceberg photo
Introducing Discussionist: A new forum by the creators of DU

Sun Jan 6, 2013, 12:48 PM

Black iceberg photo

Last edited Tue Jan 8, 2013, 03:57 PM - Edit history (1)



It's not everyday (or ever) you see a black iceberg. So when one witness snapped a flick of such rarity, the post went bonkers on Reddit.

CBS News reports the photo was posted by user Rundboll on Friday (Jan. 4), receiving over 1,000 comments and featured on the front page.

According to The Canada Encyclopedia, the odd-colored iceberg is a result of density differences.

“Others may appear green, brown or black, or combinations of these colors. These icebergs have usually rolled over, exposing basal ice, or have emerged from below water level. The various colorations are caused by differences in density, air-bubble content and impurities. For example, black ice is of high density and bubble free; dark layers indicate the presence of rock materials derived from the base of the parent glacier. Occasionally, rocks may be found on the original upper surface of the iceberg. As the iceberg melts, these materials precipitate into marine or lake sediments.”

http://www.vibe.com/article/black-iceberg-photo-goes-viral-reddit

24 replies, 6780 views

Reply to this thread

Back to top Alert abuse

Always highlight: 10 newest replies | Replies posted after I mark a forum
Replies to this discussion thread
Arrow 24 replies Author Time Post
Reply Black iceberg photo (Original post)
Submariner Jan 2013 OP
thecrow Jan 2013 #1
Historic NY Jan 2013 #2
Submariner Jan 2013 #3
BlancheSplanchnik Jan 2013 #5
murielm99 Jan 2013 #8
dixiegrrrrl Jan 2013 #12
gateley Jan 2013 #4
FirstLight Jan 2013 #6
D Gary Grady Jan 2013 #10
judesedit Jan 2013 #7
patrice Jan 2013 #9
morningfog Jan 2013 #11
jeff47 Jan 2013 #15
alfredo Jan 2013 #24
jimlup Jan 2013 #13
Mnemosyne Jan 2013 #14
Mac1949 Jan 2013 #16
NutmegYankee Jan 2013 #17
TheMadMonk Jan 2013 #18
NutmegYankee Jan 2013 #19
TheMadMonk Jan 2013 #21
NutmegYankee Jan 2013 #22
Aldo Leopold Jan 2013 #20
Solly Mack Jan 2013 #23

Response to Submariner (Original post)

Sun Jan 6, 2013, 12:59 PM

1. Ihave never seen a picture of this, nor did I know about this before!

Thank you for posting! Off to the greatest page. K&R

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Submariner (Original post)

Sun Jan 6, 2013, 01:24 PM

2. Well, that gives new meaning to cold dark night on the ocean.....

I can't imagine plowing into that. YIKES

Where was it taken?

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Historic NY (Reply #2)

Sun Jan 6, 2013, 01:46 PM

3. No indication from where, but probably Obama's fault n/t

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Submariner (Reply #3)

Sun Jan 6, 2013, 02:53 PM

5. well of course. It's BLACK!!!!!!!!

He's gonna enslave the WHITE icebergs, he's such a racist Iceist

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Submariner (Reply #3)

Sun Jan 6, 2013, 03:26 PM

8. Not at all!

This thing took a while to form, so it has to be Clinton's fault.

Reply to this post

Back to top Alert abuse Link here Permalink


Response to murielm99 (Reply #8)

Sun Jan 6, 2013, 04:18 PM

12. Looks like Cheney's old heart.

cold and black.

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Submariner (Original post)

Sun Jan 6, 2013, 02:52 PM

4. Wow!

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Submariner (Original post)

Sun Jan 6, 2013, 03:07 PM

6. so does this mean it's from a deeper part of the ocean?

Icemelt/glacial melt happening at deeper levels? Hmmmmmm....

Reply to this post

Back to top Alert abuse Link here Permalink


Response to FirstLight (Reply #6)

Sun Jan 6, 2013, 04:02 PM

10. Icebergs break off of glaciers

Icebergs aren't formed in the deep ocean but are rather "calved" off of glaciers as they slowly slide from land into the sea at the coast.

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Submariner (Original post)

Sun Jan 6, 2013, 03:22 PM

7. Probably from the area of the Valdez oil spill

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Submariner (Original post)

Sun Jan 6, 2013, 03:28 PM

9. "basal ice", "base of the parent glacier", not good, huh? nt

Reply to this post

Back to top Alert abuse Link here Permalink


Response to patrice (Reply #9)

Sun Jan 6, 2013, 04:11 PM

11. That was my thought. I am no expert, but I wonder if the reason we never see these is

because this type of melt due to climate change has never occurred before.

Reply to this post

Back to top Alert abuse Link here Permalink


Response to morningfog (Reply #11)

Sun Jan 6, 2013, 11:05 PM

15. Glaciers have always flowed

As a result, the bottom of glaciers have always broken off as they fall into the sea (or other body of water)

If it was a new phenomenon, we wouldn't already know it was caused by density, air content and minerals. We'd have just started studying these weird new glaciers.

Reply to this post

Back to top Alert abuse Link here Permalink


Response to morningfog (Reply #11)

Tue Jan 8, 2013, 09:35 PM

24. I bet it melts faster than white ice.

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Submariner (Original post)

Sun Jan 6, 2013, 07:13 PM

13. Wow! I've seen blue ice but never black ice.

Blue ice is shocking enough to see in person.

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Submariner (Original post)

Sun Jan 6, 2013, 08:29 PM

14. K&R

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Submariner (Original post)

Mon Jan 7, 2013, 11:59 AM

16. This is what (then) Second Officer Lightoller testified was struck by the Titanic.

He was not on the bridge at the time (he was off duty), but he always said that he was convinced it was a berg that had rolled over, exposing the dark ice of it's underside, and that's why it wasn't spotted early enough to take effective action.

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Submariner (Original post)

Mon Jan 7, 2013, 04:33 PM

17. Now that is cool!

I didn't realize there could be black ice.

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Submariner (Original post)

Mon Jan 7, 2013, 06:23 PM

18. How about this one for your scotch?

 

Reply to this post

Back to top Alert abuse Link here Permalink


Response to TheMadMonk (Reply #18)

Mon Jan 7, 2013, 06:37 PM

19. Any background info?

Because that is awesome!

Reply to this post

Back to top Alert abuse Link here Permalink


Response to NutmegYankee (Reply #19)

Mon Jan 7, 2013, 06:46 PM

21. Google "rainbow iceberg"

 

Chance encounter mid-ocean.

Reply to this post

Back to top Alert abuse Link here Permalink



Response to Submariner (Original post)

Mon Jan 7, 2013, 06:42 PM

20. Whoa, awesome!

I've sailed past plenty of icebergs, but didn't even know black ones existed!

Reply to this post

Back to top Alert abuse Link here Permalink


Response to Submariner (Original post)

Tue Jan 8, 2013, 08:12 PM

23. kr

Reply to this post

Back to top Alert abuse Link here Permalink

Reply to this thread