Jakob reported a logarithmic classification for a debris flow based on its volume.
Selection: debris flow
Parameter:
(1) estimated volume in cubic meters
numerical class =
= INT(MIN(10,MAX(1, LOG10(volume))))
If the numerical class is known:
estimated volume =
= from [10^(numerical class)] to [10^((numerical class) + 1)] cubic meters
|
Volume
|
Numerical Class
|
|
< 10^2
|
1
|
|
10^2 to10^3
|
2
|
|
10^3 to 10^4
|
3
|
|
10^4 to 10^5
|
4
|
|
10^5 to 10^6
|
5
|
|
10^6 to 10^7
|
6
|
|
10^7 to 10^8
|
7
|
|
10^8 to 10^9
|
8
|
|
10^9 to 10^10
|
9
|
|
> 10^10
|
10
|
