冰川风(glacier breeze)是指在冰川谷地中,冰川表面较稳定而下沉的冷却气流沿冰面向冰川前方运动,迫使冰缘地区较暖的空气上升而产生对流交换,形成了由冰川表面向冰缘地带吹送的风。如果冰川足够大,可全天盛行冰川风,还可扩展到离冰川前端更远的地方,冰川风厚度也大。冰川面上空气温度和谷中同高度空气温度温差有日变化,虽然冰川风的风向全日不变,但风速有以24小时为周期的日变化。
如你所知,沉积物是通过风、水流或冰川运动等自然过程输送的物质,如沙子、砾石、化石碎片等。
Sediment as you know, is material like sand, gravel, fossil fragments that is transported by natural processes like wind, water flow or the movement of glaciers.
厄瓜多尔卡扬贝山(4698米):我们正好处于赤道,但是风抽打着来自厄瓜多尔第三高山冰川和冰原的雪。
698m (15, 420ft) mount Cayambe, Ecuador: We are dead on the equator but the wind whips snow from the glaciers and icefields on Ecuador's third highest mountain.
结果表明,这里盛行来自冰川区的风,在冰川区与非冰川区之间风向有明显的切变,并形成一些小的辐合辐散区。
The results show that the wind from the glacier region is prevailing and there are wind shear, convergence and divergence zones between the glacial and the non-glacierized area.
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