function channelHalfWidth
universe/src/drainage.ts:550
channelHalfWidth(areaMeters: number, radius: number) → number
The channel's half-width at an upstream area, radians on the unit sphere.
w = a·Q^0.5 with Q = p·A: the root of the area times a gain, halved
for the half-width and divided by the radius for an angle.
- areaMetersnumber
- Undocumented
- radiusnumber
- Undocumented
Returnsnumber