Mud Geyser : 無料・フリー素材/写真
Mud Geyser / Bernt Rostad
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | Mud Geyser became the star attraction of the Mud Volcano Area, in Yellowstone, when first seen by members of the Washburn expedition in 1870. They described it as "a boiling spring, a placid pond, a deep dry funnel or an active geyser according to the time of visit." At that time, muddy water would explode 50 feet into the air every few hours.The geyser died in the 20th century, its plumbing clogged with mud and gravel.In 1993, soil temperatures sky-rocketed for unknown reasons and trees began dying around the geyser’s south rim. In 1999, mud pods formed and then exploded, leaving a deep hole with more sizzling features and mud. |
| 撮影日 | 2008-09-01 13:24:57 |
| 撮影者 | Bernt Rostad , Oslo, Norway |
| タグ | |
| 撮影地 | Wyoming, United States 地図 |
| カメラ | Canon EOS 400D DIGITAL , Canon |
| 露出 | 0.004 sec (1/250) |
| 開放F値 | f/8.0 |
| 焦点距離 | 23 mm |