白色圆顶间歇泉上的极光
(原标题: Aurora Over White Dome Geyser)
2022-02-20
浏览次数: 19
有时天堂和地球都爆发了。几年前，五彩缤纷的极光出人意料地爆发了，绿色的极光出现在地平线附近，明亮的红色极光在头顶上绽放。明亮的月亮照亮了这幅风景如画的前景，而熟悉的星星在远处可以看到。经过精心策划，这位细心的天体摄影师在美国西部黄石国家公园的白圆顶间歇泉中拍摄了这张图像马赛克。果然，就在午夜过后，白圆顶火山爆发了——向空中喷射出许多米高的水蒸汽。间歇泉的水在地下几公里处被炙热的岩浆加热成蒸汽，然后通过岩石裂缝上升到地表。大约一半的已知间歇泉位于黄石国家公园。虽然造成极光的地磁风暴在一天内消退了，但白圆顶间歇泉的喷发大约每30分钟持续一次。
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Sometimes both heaven and Earth erupt. Colorful auroras erupted unexpectedly a few years ago, with green aurora appearing near the horizon and brilliant bands of red aurora blooming high overhead. A bright Moon lit the foreground of this picturesque scene, while familiar stars could be seen far in the distance. With planning, the careful astrophotographer shot this image mosaic in the field of White Dome Geyser in Yellowstone National Park in the western USA. Sure enough, just after midnight, White Dome erupted -- spraying a stream of water and vapor many meters into the air. Geyser water is heated to steam by scalding magma several kilometers below, and rises through rock cracks to the surface. About half of all known geysers occur in Yellowstone National Park. Although the geomagnetic storm that caused the auroras subsided within a day, eruptions of White Dome Geyser continue about every 30 minutes.
© Robert Howell