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Going To Alaska

Just recently this useful post is getting noticed then I thought I should share it. By my count there are not enough articles that contain complete content. This practical blog entry is about ideas to watch out for if evaluating an Alaskan journey.

Inside Anchorage’s big 2018 earthquake, a ‘Snickers bar’ of shifting layers

was written by Casey Grove, Alaska Public Media – Anchorage , 2019-12-03 20:58:08

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A sediment core from the bottom of Eklutna Lake taken by U.S. Geological Survey and Ghent University researchers in February 2019 showing sediment deposit caused by the 2018 M7.0 Anchorage earthquake. (Screenshot from Maarten Van Daele/Ghent University video below)

A year ago, the most impactful earthquake to hit Alaska in half a century damaged buildings and roads in Southcentral, scared a lot of people, changed water levels and stream flow and even caused underground soil liquefaction that resulted in “sand boils” at the surface.

Scientists analyzing all of that and more have been publishing research papers about the magnitude 7.1 Anchorage earthquake, including a multidisciplinary study by more than a dozen authors that’s in the journal Seismological Research Letters.

Geologist Peter Haeussler with the U.S. Geological Survey is one of the dozen or so authors.

He said those types of “intra-slab” earthquakes tend to leave fewer clues at the surface and therefore researchers have to use unique methods for figuring out how often they occur and how big they can be.

“By looking at sediment cores from lake bottoms, you can actually figure out how far back in time you’re actually looking,” Haeussler said. “There are some sort of strange looking sediments that’re thicker and they have physically distinctive features, called turbidites, and there’s strong evidence that turbites were triggered in strong ground shaking in ancient earthquakes in the past.”

Turbidites found in Eklutna Lake, north of Anchorage, after the Nov. 30, 2018 earthquake gave researchers another example of a known earthquake, helping to calibrate measurements on how often the quakes occur.

Haeussler spoke to Alaska Public Media’s Casey Grove.


Team of U.S. Geological Survey (Alaska Science Center) and Ghent University (Renard Centre of Marine Geology) researchers collecting sediment cores from Eklutna Lake in February 2019, in order to trace the sedimentary imprint of the 2018 M7.0 Anchorage earthquake. (Maarten Van Daele/Ghent University video)

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a vacation in Alaska, America's icebox

Going To Alaska

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Alaska is a place where sustainable hospitality and travel is critical.

Our ideal sites for absolutely everyone traveling to Alaska includes

Chugach National Forest. Only a third as large as Tongass National Forest, in Southeast Alaska, Chugach is still the second-largest national forest in the country and an impressive combination of forests, rivers, lakes, mountains and glaciers. Around the size of New Hampshire, Chugach includes geographic variety that is truly unique among national forests. The 5,940,000-acre forest is spread out across 3 distinct landscapes, stretching from the Kenai Peninsula east across Prince William Sound to include the Gulf Coast encircling the Copper River Delta, then east from there as far as the Bering Glacier. Wildlife is plentiful especially for all those who take the time to walk away the roadways and highways. Black and brown bear dwell in virtually all of the forest, foraging on open tundra slopes and in intertidal zones. In late summer months, bears may be spotted feeding upon spawned-out salmon along streams and rivers. Record-size moose occupy the Kenai Peninsula and the Copper River Delta. Dall sheep can be seen on Kenai Peninsula mountainsides, mountain goats are found upon steep hillsides along Prince William Sound, the Copper River Delta and from time to time above Portage Valley. Boaters and kayakers in Prince William Sound may see Dall porpoises, harbor seals, sea otters, sea lions, Orcas and humpback whales. More than 214 species of resident and migratory birds occupy Chugach National Forest. Seabirds, which include blacklegged kittiwakes, nest in sea cliff colonies by the thousands. Ptarmigan scurry about alpine tundra, bald eagles perch on coastline snags and Steller’s jays forage around the underbrush. The Copper River Delta protects one of the largest concentrations of nesting trumpeter swans in North America in addition to the total population of dusky Canada geese. Nesting waterfowl are joined in spring and autumn by many of migrating shorebirds. Chugach offers a variety of angling options; anglers can cast for rainbow, lake and cutthroat trout and also Dolly Varden, Arctic grayling and all five species of Pacific salmon. Many of the fisheries are easy to reach; roadside lakes and rivers are all around giving fishermen an opportunity to fish without needing a boat. Chugach’s most noted fishery is the red salmon run of the Russian River where anglers are often standing elbow-to-elbow alongside the river bank in July and July. Chugach is one of the handful of spots left in the world where glaciers pour out of the mountains and into the seas. When combined with the Bagley Icefield from which it originates, Bering Glacier is bigger than Switzerland. Columbia Glacier is one of the largest tidewater glaciers in the world while Portage Glacier and its Begich-Boggs Visitor Center is actually one of the most widely used places to visit for vacationers within Alaska.

visiting Chugach National Forest in Alaska

Traveling To Chugach National Forest in Alaska, America’s icebox