From which direction does the prevailing wind blow? (The top of the map is north.) How can you tell?

The following questions are based on the portion of the “Kane Spring NW, California” quadrangle (scale 1:24,000; contour interval 10 feet) shown in Figure 46-6. These isolated dunes in the desert near the Salton Sea (33°11'02"N, 115°52'20"W) are moving over a surface that is only thinly covered with sand. To view this map in color, go to the Lab Manual website or scan the QR code for this exercise.
What will be an ideal response?


From the west, “Horns” of dunes point downwind (to the east).

Environmental & Atmospheric Sciences

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