流动水膜形成的顺流溶解模式
Streamwise Dissolution Patterns Created by a Flowing Water Film
摘要：
降雨对岩石的溶解通常会产生顺流平行的河道，但这些自然模式的发生仍有待了解。在这里，我们报告的出现在实验室中的一个最初平坦的可溶性材料，倾斜和薄的径流水流量的表面上的流向溶解模式。几乎平行的槽约1毫米宽，并沿主斜坡方向自发形成。它们的宽度和深度随着时间的推移不断增加，直到它们的波峰出现并使水流形成通道。我们的观察可能构成了在该领域观察到的模式的早期阶段。
英文摘要：
The dissolution of rocks by rainfall commonly generates streamwise parallel channels, yet the occurrence of these natural patterns remains to be understood. Here, we report the emergence in the laboratory of a streamwise dissolution pattern at the surface of an initially flat soluble material, inclined and subjected to a thin runoff water flow. Nearly parallel grooves about 1 mm wide and directed along the main slope spontaneously form. Their width and depth increase continuously with time until their crests emerge and channelize the flow. Our observations may constitute the early stage of the patterns observed in the field.
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