Wind rippled sand surface (Goblin Valley, Utah, USA) : 無料・フリー素材/写真
Wind rippled sand surface (Goblin Valley, Utah, USA) / James St. John
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | Ripple marks are common sedimentary structures - they form in a current. Asymmetrical ripples have a long side and short side - they form in a one-directional current by wind or water. Symmetrical ripples have more or less evenly shaped - they form in a two-directional, back-and-forth current in shallow water by wave action.Seen here are modern ripple marks developed in loose sand. The ripples were formed by winds.Locality: Goblin Valley, southeast-central Utah, USA |
| 撮影日 | 2010-07-17 15:37:30 |
| 撮影者 | James St. John |
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