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Alaskan Glaciers
When you come to
Alaska one of the more exciting experiences is watching a glacier
calving. That is when the ice, which constantly moves down the hill,
hits the water’s edge and the sheer massive weight of the ice cannot be
supported by the water and enormous sections as large as 50’ x 100’ by
as much as 40 to 50’ in depth break off and literally create a wall of
water as the ice can fall from over 150’ in height. Clearly this a scene
not to be missed.
Glaciers are always
white to blue in color because all the other colors are absorbed by the
ice thus only blues remain.
The age of the ice is questionable however a lot of people like the
estimate of the last 10,000 years. In reality the ice is closer to 200
to 800 years as the snow which gets compacted falls every year and over
time creates a slow moving river of ice. This ice flow, which is
constantly a downward move, literally is sliding down hill with melt
water from underneath the glacier providing the lubricant to allow the
ice to flow.
In the past five
years, this writer has seen a substantial increase in the size and
volume of ice calving from the glaciers.
Whether this phenomenon is a direct result of global warming or
perhaps a very long cycle repeating itself in our short 100 years on
earth remains to be scene or agreed upon.
In any event the ice is falling into the sea and slowly raising
the sea level all around the world.
To arrive at the
glaciers one has to take a yacht or excursion vessel from Juneau to
navigate the narrow fjords and perhaps get close enough to the face of
the glacier to see them calving.
The fjords are ½ mile to 1 mile in width and some 5000 to over
6000 feet in height. It is
one of the best days you will spend while visiting SE Alaska.
Most cruise ships do not go into the fjords - only the smaller
yachts and excursion vessels will try to get to the face of a glacier
making a private charter yacht a truly once in a lifetime experience for
the privileged few.
Temperatures in the
fjords can drop 20 degrees or more from where you enter the fjords at
Stephens Passage. The
temperature drop is due to the miles of glaciers that cover the mountain
ranges above the fjords.
Since cold air sinks the fjords being long and narrow tend to hold the
cold air in place for a long time.
Bringing gloves and warm clothes for this adventure day with
Mother Nature and her icebox of ice is not a recommendation but a
necessity.
Caledonia and
Alaskanwcharters.com are one of the 12 yacht that regularly ply the
waters of the fjords of Alaska to bring you “up close and personal” to
all the sights and sounds that the real Alaska has to offer. |
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