Thus the distribution decreases exponentially, which is more slowly than the normal distribution.

The wave is of maximum intensity at the interface and decreases exponentially away from it.

Empirical studies show that the porosity of rocks decreases exponentially with depth.

In particular, the battery power decreased exponentially with a half-life of 2.62 years, the same as that for Pm-147.

As a result, the number of people living in the camps decreased exponentially.

Studies have shown that, in many environments, the rate of erosion and runoff decreases exponentially with increased vegetation cover.

This translates as the pressure decreasing exponentially with height.

The probability of not reaching a stable state decreases exponentially with time after inputs have been provided.

But that second one is a big reach, and from then on the chances decrease exponentially.

I'd guess the concentration decreases exponentially with distance from the surface.