Depth at which a given fraction of surface light remains.

Solves exp(-Kd * z) = fraction for z, giving -log(fraction) / Kd. The default 1

Usage

photic_depth(Kd, fraction = 0.01)

Arguments

Kd

Diffuse attenuation coefficient(s) in 1/m.

fraction

Fraction of surface irradiance. Must be in (0, 1). Default 0.01 (1%).

Value

Depth(s) in metres at which fraction of surface light remains.

Examples

photic_depth(0.06)
#> [1] 76.75284
photic_depth(0.06, fraction = 0.1)
#> [1] 38.37642