Glaciers calve -Whittier, AK, July 18, 2005 |
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Glaciers calve -Whittier, AK, July 18, 2005 |
Ute_Kaden |
Jul 20 2005, 12:14 AM
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TREC Teacher Group: TREC Team Posts: 203 Joined: 27-April 05 Member No.: 10 |
7-18-2005
Whittier- Anchorage’s Gateway to Prince William Sound Since today I am one of the fortunate people that have visited Prince William Sound. What an unusually beautiful coastal area of South Central Alaska, glaciers amidst snow-capped mountains reaching over 13000 ft. Whittier Map After a two hour drive from Anchorage I reached the city of Whittier. A 2.5 – mile World War II-era railroad tunnel now shared by cars is the only way in, very cool. Travelers be aware, get the tunnel opening times before you have to wait in line for and hour or so (www.dot.state.ak.us) Railroad and car tunnel to Whittier, 2.5 mil long Whittier is a major transit point for ferries, cruise ships and recreational boats, all of which connect here with the Alaska Railroad. Whittier is a point where railroad and ships meet The harbor is mostly ice free and the city itself was established by the US Army during World War II as “secret port”. Large (ugly) concrete buildings still remain from this era. I booked a 6h cruise to see the glaciers. Where is my cruise ship? That was the new view I had in the morning from my camp side. The night before it was not there. Which ship will I board for the glacier cruise? No, it is not that huge Princess cruise liner, it is that small vessel next to it. Here we go to visit the glaciers of Prince William Sound. Note the Princess cruise ship is not moving a bit. We are. We watched out for sea life. Sea Otters (Enhydra lutris) crossed our path. Otters on the back sleeping or eating or playing Sea Otters, the smallest of marine mammals, are oodles of energy bundled in fur (29-39’’ long). Although they swim and hunt for food each day, they have plenty of time to play. Sea Otters feeding on fish, squid, sea urchins and crabs. They often float on their backs using their stomachs as a table for food. Prince William Sound extends to the 60th parallel and is farther north than Cape Horn South. The landscape has been shaped by earthquakes and extensive glaciations. Glaciers of Prince William Sound Each glacier has a personality often quite different from that of its neighbors. Are they shrinking, growing, or holding their own? Scientists work on recording their behavior and trying to find answers which may predict a climate change. There are two types of glaciers polar (cold climate of Greenland and Antarctica) and temperate ones. Temperate glaciers surrounding the Prince William Sound are at or near freezing point during most of the year and slide over their bedrock. About 17 tidewater (calving) glaciers terminating at sea level here. One of the tidewater claciers after calving. Look at the small icebergs drifting in the water. What everybody likes to see the glacier do? Calving Calve: the process of ice breaking from the face of a glacier. We waited and waited and than suddenly it just happened. A cracking sound and a huge part of the glacial ice broke off (calving) the Beloit Glacier and fell into the water followed by a loud booming noise and wave action. I was stunned. The captain acknowledged that this was the largest piece that he had seen falling off in the last 3 years. Look a big part that is falling off . The glacier is calving. After calving big waves started toward our boat and all the ice is in the water in front of the glacier The same glacier berfore calving. Can you see the crack in the middle? It was time to go back to Whittier. I am wondering, what else can follow this event? Ute |
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