标签 黄石 下的文章

黄石下瀑布，黄石国家公园，怀俄明州，美国 Lower Yellowstone Falls, Yellowstone National Park, Wyoming (© Tim Fitzharris/Minden Pictures)

这是你的土地 This land is your land

黄石下瀑布，怀俄明州，美国

虽然夏天即将结束，但现在收拾好装备，去户外探险还为时不晚。不知道该去哪里？那就去美国看看63个国家公园吧！1916年的今天，时任美国总统伍德罗·威尔逊签署《国家公园管理局组织法》，正式成立国家公园管理局，旨在“保护自然景观、野生动植物和历史遗迹，在供人们休闲娱乐的同时，不得破坏这些场所，并将之传诸后代”。无论是哪里的美景，只有小心呵护才能让这份美丽得以延续。

National Park Service anniversary

Though summer is winding down, it's not too late to pack some gear and head into the great outdoors. Unsure where to go? Look no further than our 63 national parks, which exist thanks to the National Park Service, created on this day in 1916 by President Woodrow Wilson. He ordered the service to preserve the landscape, wildlife, and history of the parks 'in such manner and by such means as will leave them unimpaired for the enjoyment of future generations.' In other words, the park service was established for all of us! Just make sure that whether you're visiting the islands of American Samoa, the glaciers of the North Cascades, the waterways of the Everglades, or the 308-foot Lower Falls of Yellowstone in today's image, that you explore them with care and appreciation so that they can be preserved for centuries to come.

黄石国家公园里的上间歇泉盆地，美国怀俄明州 Upper Geyser Basin in Yellowstone National Park, Wyoming (© Ray Urner/Tandem Stills + Motion)

水与火相遇的地方 Where fire and water meet

Upper Geyser Basin, Yellowstone National Park

The highest concentration of geysers and hydrothermal springs in the world are located here in this corner of Yellowstone National Park, called the Upper Geyser Basin. They include what is perhaps the most famous geyser of them all: Old Faithful. But the Upper Basin contains many other geysers as well, including the tallest predictable geyser (Grand Geyser) and the most voluminous geyser (Giant Geyser). Yellowstone contains about 300 geysers, about two-thirds the number in the entire world.

Geysers are essentially a rare form of hot spring—a water-filled tube that extends thousands of feet into the Earth's crust, so deep it makes contact with molten rock called magma. The water in the tube boils and under extreme pressure ejects the water column into the air, emptying the tube. After some time, more groundwater seeps into the tube, filling it, and starting the process over again. That's why geysers erupt at somewhat regular intervals. The bigger the tube, the more water, and the longer the eruption. Yellowstone is one of the few places in the world where you can safely walk among so many geysers and superheated springs, and view them close up. Trails and boardwalks guide the way, making the Upper Geyser Basin one of the star attractions of this famous national park.

黄石国家公园上间歇泉盆地

世界上最密集的间歇泉和热泉位于黄石国家公园的这个角落，被称为上间歇泉盆地。其中最著名的喷泉可能是：老忠实喷泉。但上盆地也有许多其他间歇泉，包括最高的可预测间歇泉（大间歇泉）和最大的间歇泉（巨型间歇泉）。黄石公园有大约300个间歇泉，大约是全世界的三分之二。

间歇泉本质上是一种罕见的温泉，它是一种充满水的管子，伸入地壳数千英尺深，与称为岩浆的熔融岩石接触。管子中的水沸腾，在极端压力下将水柱喷射到空气中，排空管子。一段时间后，更多的地下水渗入管道，将其充满，然后重新开始这一过程。这就是间歇泉每隔一定时间喷发的原因。管子越大，水越多，喷发时间越长。黄石公园是世界上为数不多的几个可以在众多间歇泉和过热泉水之间安全漫步并近距离观看的地方之一。小径和木板人行道指引着道路，使上间歇泉盆地成为这个著名国家公园的明星景点之一。

黄石国家公园的大棱镜泉鸟瞰图，美国怀俄明州 Aerial view of Grand Prismatic Spring, Yellowstone National Park, Wyoming (© AirPano LLC/Amazing Aerial Agency)

“美国最好的想法”起源于此 'America's best idea' began here

National Park Week begins

Only a very small percentage of Yellowstone's total visitors see the park when it looks like this. In winter, when the park grows quiet, its hydrothermal features really stand out, like the rainbow-hued Grand Prismatic Spring near the center of this image, the most photographed feature in Yellowstone.

Just the inspiration we need as we start National Park Week, an occasion to celebrate the splendor of our park system and turn to thoughts of hiking, paddling, and camping. The 'Week' is actually a bit longer, starting today and running through Sunday, April 24. Yellowstone was established by congress 150 years ago as the nation's first national park. Today, there are 63, and they include the volcanoes of Hawaii, the giant sequoias of California, the Grand Canyon, and the desolate moonscape of the Badlands.

Perhaps no national park better captures the American landscape than Yellowstone, 3,500 square miles of lakes, canyons, rivers, mountains, waterfalls, hot springs, and its charismatic megafauna—bison, wolves, elk, and grizzly bears. But it's Yellowstone's hydrothermal sites that really set it apart. Old Faithful might be the most famous, but it's only one of 10,000 around here. Although the park is still chilly in April, you'll have the place mostly to yourselves. Only about 44,000 visit Yellowstone in April, compared to the nearly 1 million who gather each July. If you need more incentive, entrance fees today, in honor of National Park Week, are on the house.

国家公园周开始

当黄石公园看起来像这样时，只有很小比例的游客参观了它。在冬天，当公园变得安静时，它的热液特征真的很突出，比如这张图片中心附近彩虹色的大棱柱形泉水，这是黄石公园拍摄最多的特征。

这正是我们开始国家公园周时所需要的灵感。国家公园周是一个庆祝我们公园系统辉煌的时刻，我们可以考虑徒步旅行、划船和露营。“一周”实际上要长一点，从今天开始，一直持续到4月24日周日。黄石公园是美国国会在150年前建立的第一个国家公园。如今，这里有63座火山，其中包括夏威夷的火山、加利福尼亚州的巨大红杉、大峡谷和荒地荒凉的月球景观。

也许没有哪个国家公园能比黄石公园更好地捕捉到美国的风景。黄石公园有3500平方英里的湖泊、峡谷、河流、山脉、瀑布、温泉，以及迷人的大型动物群——野牛、狼、麋鹿和灰熊。但真正让它与众不同的是黄石公园的热液遗址。老忠实可能是最有名的，但它只是这里一万个中的一个。虽然四月份公园里仍然很冷，但你可以独处。4月份只有大约4.4万人参观黄石公园，而每年7月有近100万人聚集在这里。如果你需要更多的奖励，为了纪念国家公园周，今天的入场费是免费的。

黄石国家公园的大棱镜泉，怀俄明州 The Grand Prismatic Spring in Yellowstone National Park, Wyoming (© Martin Rügner/DEEPOL by plainpicture)

Colors spring up in Yellowstone

As National Park Week continues, we're taking a look at the Grand Prismatic Spring, one of the more popular attractions in Yellowstone National Park. Visitors on an elevated wooden boardwalk come to witness the vivid colors, which are formed due to a cycle of hot water rising, cooling, and falling--creating rings of distinct temperatures inside the spring. The clear, blue center is the hottest part, with almost nothing living in it. But the other rings are home to different organisms that give the water its rings of color. While it's beautiful to look at, you wouldn't want to swim in it. It's illegal, but it's also much too hot—and the sulfur smell wouldn't leave you feeling too clean.