Channel Islands National Park, CA
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Gastineau Channel is a channel between the mainland of the U.S. state of Alaska and Douglas Island in the Alexander Archipelago of southeastern Alaska. It separates Juneau on the mainland side from Douglas (now part of Juneau), on Douglas Island. The first European to sight the channel was Joseph Whidbey early in August 1794, first from the south and later from the west. It was probably named for John Gastineau, an English Civil Engineer and Surveyor.
The channel is navigable by large ships only from the southeast as far as the Douglas Bridge, approximately 9.7 miles (15.6 km). Between the bridge and Juneau International Airport, approximately 8.1 miles (13.0 km), it is navigable only by smaller craft and only at high tide.
The channel is becoming increasingly unnavigable due to shallow water depths. The two principal causes for this are:
Isostatic rebound following the retreat of glacial ice sheets
Sedimentation and infilling of the Gastineau Channel by silty sediment produced by the Mendenhall Glacier and Mendenhall River.
If current trends continue, Gastineau Channel may eventually become dry or unnavigable or both.
During isostatic rebound, the Earth’s lithosphere (crust) is slowly rising due to buoyant forces, following the removal of a large mass on the surface. This can be likened to an ice cube floating in a glass of water with a penny sitting on top. The weight of the penny makes the ice cube float lower, similar to the immense weight of a glacier on top of the lithosphere. When the penny (glacier) is removed, the ice cube (lithosphere) “rebounds” and floats slightly higher. In the geologic case, this scenario happens very slowly. Rates of isostatic rebound throughout SE Alaska vary from 0.1 to 1.5 inches/year depending on glacial history. The approximate rebound rate in the Juneau area is 0.25 to 0.5 inches/year.
Wikipedia
A long exposure, landscape image of waves crashing through the Whale's Moo near Portknockie in Morayshire, Scotland.
Lincoln County-Washington State.
The Channeled Scablands at one time were a relatively barren and soil-free region of interconnected relict and dry flood channels, coulees and cataracts eroded into Palouse loess and the typically flat-lying basalt flows that remain after cataclysmic floods within the southeastern part of the U.S. state of Washington. The channeled scablands were scoured by more than 40 cataclysmic floods during the Last Glacial Maximum and innumerable older cataclysmic floods over the last two million years. These cataclysmic floods were repeatedly unleashed when a large glacial lake repeatedly drained and swept across eastern Washington and down the Columbia River Plateau during the Pleistocene epoch. The last of the cataclysmic floods occurred between 18,200 and 14,000 years ago.
The white birds, a symbol of peace, beautifully captured here, flying in different directions like spreading a message of freedom and peace. The blue sky and the blue water adding serenity to the picture!
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One of the later sunset shots I took on this evening, one thing I had forgot to do was change my settings from shooting hand held during the day, to be honest I was rather late getting to this spot after being indecisive about where to shoot the sunset. However, I got some shots but had not noticed my ISO was still at 400 doh,I prefer to shoot at 100 or if I can get away with it 50 for the quality and latitude it gives me .
So this is one of a number of compositions I made before it got a bit too dark on our last night in Cornwall, more to come from Cornwall in due course .
So... After watching this little wagger for an hour at great distance, it took off and landed in the road behind me, the worst possible place for a proper ID shot, partly obscured by vegetation and pretty much into the sun. Anyway, I've scrubbed the idea of it being a Blue-headed wagtail (I did spend half an hour trying to convince myself it was a Sykes... In my dreams) and have now settled for it being a Channel. :@)
The Beagle Channel is located at the southernmost tip of South America. It is graced with beautiful blue waters and many different types of birds. The Upland Geese are a common sight at the park.
Winter grips Bedford Channel in Fort Langley as the Fraser Rivers mists glide along the perfectly calm water, mirroring the scene.
Channeled my inner 'Cat' for this shot. 37421 leading 3Q12 1220 Doncaster West Yard - Goole over the River Don at Conisbrough. Evey Valentines day needs a frothy four....? 14th February 2023.
The well known big 4 sculpture (2007) outside the atrium of the Channel 4 TV Building, 124-126 Horseferry Road, Westminster, London. Richard Rogers, 1994. For those that can't get or don't watch Channel 4, you have to line up the sculpture framework to see the logo.
PS the C4 building became Grade II listed in March 2023.
Yesterday I rode down to the channel and took a few quick pictures for it was 12° and the wind was coming off Lake Michigan harshly. Here the channel is full of float ice coming in off Lake Michigan.