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Sunrise this morning. I froze my fingers getting this. As you can see, the dock is not an inconsiderable body of water. It was designed for ocean ships (albeit not of today's scale), and would have assumed that it contained salt walter, though I suppose it may have been years since the lock fully opened to exchange water with the Thames Estuary, and it may well be fed fresh water from culverts and storm drains. Even so, frozen water means it's cold. (Something to bring you back to reality after that last warm sunny summer shot from the archives.)
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Greenland Dock water is 'brackish' - a mix of salt and fresh water. It's still fed from the Thames - the dock is open to boats to moor who enter through the lock to the river.
The Thames is actually brackish until Battersea at which point it's considered fresh water. It's considered sea / marine water beyond Gravesend.
As you said, there are probably also non-thames water sources (not to mention rain and snow). Salt and brackish water is more dense than fresh water, so in a still dock this fresh water may sit on top of the saltier water, which can then freeze at the normal point of 0C...
Fabulous sunset and a gorgeous shot !!
Hi, I'm an admin for a group called AreKev's `Not Another Flickr Group, and we'd love to have this added to the group!
nice to see you got this lovely shot with a D90 - mines been in need of repair since August - so Ive got to do something about that ASAP! -sorry but frozen fingers were well worth getting this fab pic!
Hi Joe,
You have a great stream, but I'm in a bit of a rush to grab some food, so thought I would just comment on one of your more recent shots for the time being!
Love the pastel tones here, and their repetitiion in the reflection in the water. The buildings seeming to get progressively shorter from left to right combined with the perspective of the dock wall on the right also seems to create an 'artificial' vanishing point that the eye is drawn to, a great effect!
Science blog! A blog about cancer cell and molecular biology, coming soon...
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How to leave your comment
wilkie,j ( says NO to badger cull :(
2010-01-06 01:24:17
Beautiful sky joe
dichohecho
2010-01-06 16:31:57
Golly! Bristol's lovely and snowy today :)
daejn
2010-01-07 13:14:09
Great photo. We used it for a snowy London photo gallery on Londonist today. Thanks!
Joe Dunckley
2010-01-07 22:20:57
thanks, y'all. daejn: I noticed -- always an honour!
Joe CWS
2010-01-08 12:55:10
Superb colours in the sky!
Paul Lomax
2010-01-08 14:28:24
Greenland Dock water is 'brackish' - a mix of salt and fresh water. It's still fed from the Thames - the dock is open to boats to moor who enter through the lock to the river. The Thames is actually brackish until Battersea at which point it's considered fresh water. It's considered sea / marine water beyond Gravesend. As you said, there are probably also non-thames water sources (not to mention rain and snow). Salt and brackish water is more dense than fresh water, so in a still dock this fresh water may sit on top of the saltier water, which can then freeze at the normal point of 0C...
AreKev
2010-01-08 16:46:40
Fabulous sunset and a gorgeous shot !! Hi, I'm an admin for a group called AreKev's `Not Another Flickr Group, and we'd love to have this added to the group!
AngelasTravels
2010-01-10 10:35:26
nice to see you got this lovely shot with a D90 - mines been in need of repair since August - so Ive got to do something about that ASAP! -sorry but frozen fingers were well worth getting this fab pic!
Simon Sait
2010-01-11 19:19:08
Hi Joe, You have a great stream, but I'm in a bit of a rush to grab some food, so thought I would just comment on one of your more recent shots for the time being! Love the pastel tones here, and their repetitiion in the reflection in the water. The buildings seeming to get progressively shorter from left to right combined with the perspective of the dock wall on the right also seems to create an 'artificial' vanishing point that the eye is drawn to, a great effect!
Michel Couprie
2012-06-05 08:41:26
Great light and reflects, lovely tones!