| Within the saltation cloud, a significant portion of the total mass transport passes beneath a height of a few centimeters. We designed the near-surface sampler to sample this near-surface flow. This design collects windblown material from three different heights within the first 20 mm from the surface. The first inlet extends from the surface to a height of 3 mm; the second inlet extends from 3 to 10 mm; the third inlet spans 10 to 20 mm. All inlets are rectangular and have a width of 5.5 mm. The near-surface unit is mounted on a turntable and is directed into the wind by a vane. Sampling inlets funnel sediment to a collection pan located beneath the surface. |
