标签 艾伯塔 下的文章

亚伯拉罕湖中的树,加拿大艾伯塔 Tree trunks in Abraham Lake, Alberta, Canada (© Coolbiere/Getty Images)

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亚伯拉罕湖中的加拿大艾伯塔 Tree trunks in Abraham Lake, Alberta, Canada (© Coolbiere/Getty Images)

Lake and a reservoir

Today, we’re taking in views of Alberta’s largest reservoir – Abraham Lake. It was created in 1972 following the completion of the Bighorn Dam on the North Saskatchewan River. The dam was built by then Calgary Power Company, now TransAlta, to produce hydroelectric power. As seen here, Abraham Lake boasts a vivid shade of blue, further contributing to the breathtaking view with the mountains in the background. Of late, this gem in the Rockies has become a must-see for photographers every winter, for the emergence of the extraordinary frozen bubbles trapped under the lake. As the temperature drops, methane gas released from water-dwelling bacteria, forms into bubbles and freezes under the surface of the frozen lake. When the layer of ice on the lake is clear, the frozen bubbles can be seen and make for a remarkable spectacle.

和水库

今天,我们将欣赏艾伯塔省最大的水库——亚伯拉罕湖。它是1972年在北萨斯喀彻温上的比格霍恩大坝完工后建造的。大坝由当时的卡尔加里电力公司(现为TransAlta)建造,用于生产水力发电。如图所示,亚伯拉罕湖拥有一个生动的蓝色阴影,进一步促进了以山脉为背景的惊险景色。最近,落基山脉的这块宝石每年冬天都成为摄影师们的必看之地,因为湖底出现了异常冰冻的气泡。随着温度下降,水中细菌释放出的甲烷气体形成气泡,冻结在结冰的湖面下。当湖面上的冰层清澈见底时,可以看到结冰的气泡,形成一种非凡的景象。

班夫国家公园中莫兰湖的延时视频,加拿大艾伯塔省 Time-lapse video of Moraine Lake in Banff National Park, Alberta, Canada (© Schroptschop/Getty Images)

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班夫国家公园中莫兰的延时视频,加拿大艾伯塔省 Time-lapse video of Moraine Lake in Banff National Park, Alberta, Canada (© Schroptschop/Getty Images)

Canada's $20 view

For Canada Day, we're looking at Moraine Lake in Banff National Park. And if you're thinking that this amazing view is worth more than $20, you're right. But this priceless scene was once featured on Canada's $20 bill, hence the nickname. Canada Day, celebrated on July 1, commemorates the date in 1867 when Canada was recognized as a self-governing country under the British Empire It's not exactly Canadian Independence Day–it marks the passing of the Constitution Act of 1867, which was the first major step toward Canada's sovereignty.

Moraine Lake is just one of the many beautiful areas in Canada's oldest national park. Located in Alberta's Rocky Mountains, Banff covers more than 2,500 square miles–though we should say 6,641 square kilometres. After all, it's Canada Day.

亚伯拉罕湖中的冰泡,加拿大艾伯塔省 Bubbles in the ice of Abraham Lake in Alberta, Canada (© robertharding/Alamy)

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亚伯拉罕湖中的冰泡,加拿大艾伯塔省 Bubbles in the ice of Abraham Lake in Alberta, Canada (© robertharding/Alamy)

Frozen beauty

Located on the North Saskatchewan River, Lake Abraham is an artificial lake and Alberta's largest reservoir. Even though it's man-made, it takes on the blue color of other glacial lakes in the Rocky Mountains. In winter, the lake draws nature photographers interested not just in the wildlife and spectacular landscape, but also the lake's odd appearance when it freezes over. Bacteria on the lake bottom feed on dead organic matter and release the methane bubbles you see here. When the surface water freezes, the bubbles get trapped, creating a photographer's dream. They may be beautiful, but these frozen bubbles can be dangerous because they're highly flammable. If you happen to be lighting a match nearby, you'll want to watch out or the released methane could explode. The bubbles aren't so friendly to the environment, either; methane emissions are a major part of global greenhouse gas emissions, which contribute to climate change.