The Alaska-Canada boundary was originally established in February 1825 by Russia (then owner of Alaska) and Great Britain (then owner of Canada). The demarcation between Alaska and Canada was to begin at 54°40' N latitude, just north of the mouth of the Portland Canal (near Prince Rupert, B.C.), follow the canal until it met 56° N latitude ...

2019年7月11日 · Marked by metal cones and a clear-cut swath 20 feet wide, Alaska’s border with Canada is one of the great feats of wilderness surveying. The boundary between Alaska and Canada is 1,538 miles long. The line is obvious in some places, such as the Yukon River valley, where crews have cut a straight line through forest on the 141st Meridian.

Places like Fairbanks, Alaska; Dawson City, Yukon; Yellowknife, NWT; Churchill, Manitoba; the southern tip of Greenland; Reykjavik, Iceland; Tromsø, Norway; and the northern coast of Siberia all offer a good chance to view the aurora overhead.

2021年4月7日 · ACUASI is one of several Geophysical Institute facilities at the University of Alaska Fairbanks and is the largest UAS operator in the Arctic. ACAUSI had previously collaborated with Transport Canada to help with endangered whale monitoring in Canada’s busiest shipping lanes in the Gulf of St. Lawrence. But the task was no small undertaking.

2020年3月5日 · “The two trench-like valleys combine to form a remarkable groove . . . from Montana to Alaska,” wrote geologist James Roddick in a 1967 paper. So, to answer Nate Becker’s question, the Tintina Fault has delivered continental Canada gold to the south side of the Yukon River, but Canada has kept its own gold on the north side of the fault.

2025年2月13日 · Over extended periods of time, the accumulated offset becomes substantial. On the basis of comparing similar rock types on both sides of the Denali fault in Canada and Alaska, scientists at the Geophysical Institute estimate that 240 miles (400 kilometers) of displacement has taken place over the past 60 million years.

2025年1月9日 · Alaska — as well as the greater landmass north of the Arctic Circle — is “the world’s bird nursery,” said Natalie Boelman of Columbia University in December 2024. She cited Alaska’s abundance of insects and undisturbed space during her lecture at an immense conference in Washington, D.C.

2025年2月20日 · One of the ties between Canada and Alaska is the great Denali fault system that cuts across the whole of southern Alaska, extends on eastward into Canada and then dips back into Alaska near Haines. Its path through Canada and on into Haines is pretty much followed by the Alaska Highway from Koidern, Y.T. (just south of Boundary) to Haines ...

2025年2月27日 · Instead, as the map shows, the Continental Divide through Alaska runs along the Brooks Range and into Seward Peninsula where it terminates at Cape Prince of Wales. Thus it separates the watersheds draining north and west into the Arctic Ocean from those draining west and south into Bering Sea.

2025年2月20日 · The air mass that exists over Alaska and Yukon Territory is one of the world's most interesting because a lot of action takes place within it. High mountains, volcanoes, moist Pacific air, the cold Arctic ice pack, the aurora and even the airplanes on the transpolar air route all play a role in what goes on in the air around and above our heads.