Eastern Mojave Vegetation Figure 2. Grain size vs. standard deviation of grain size. I sometimes post interesting questions in my FAQ , but I never disclose your full name or address. Inclusive graphic mean grain size versus inclusive standard deviation for some California and Nevada sand dunes showing region in which booming sounds would be expected. Size classification after Udden-Wentworth.
Solid symbols indicate booming sound in field, open symbols indicate no sounds.
Shaded area indicates grain size and degree of sorting where acoustic phenomena should occur.