150313-A-IF251-566 : 無料・フリー素材/写真
150313-A-IF251-566 / USACE Buffalo
| ライセンス | クリエイティブ・コモンズ 表示-改変禁止 2.1 |
|---|---|
| 説明 | The U.S. Army Corps of Engineers, Buffalo District and Environment Canada took a helicopter out onto Lake Erie to measure actual ice thickness at six preselected locations.The International Joint Commission's International Niagara Board of Control, established in 1953 to monitor activities concerning the levels and flows of the Niagara River, intensively monitors the ice situation each spring to determine when conditions are acceptable for boom removal. Boom opening is dependent on weather, ice conditions in Lake Erie and the Niagara River, among other factors. |
| 撮影日 | 2015-03-12 20:41:12 |
| 撮影者 | USACE Buffalo |
| タグ | |
| 撮影地 | |
| カメラ | NIKON D90 , NIKON CORPORATION |
| 露出 | 0.001 sec (1/1000) |
| 開放F値 | f/8.0 |
| 焦点距離 | 65 mm |