The arid region piedmonts: glacis and alluvial fans
365
200
,
Spanish Fans
100
Californian Coast Ranges
50 -I
Death Valley Region
20
10
E
v
5
t"
u_
2
p
pJ
p
J
J
I
f
i
I
f
/
jpl
j#
J
f
/
/
p
.J
J
f
f
f
f
jJ
jJ
J
f
f
t
P
f
ff
/
/
f
i
jJ
J
j
f
P
/
/
J
/
J
f
J
S
0.5
0.2
0.1
p
/
I
I
I
I
I
I
I
I
0.2 -
0.1
-
0.05
0.02 -
t'u.. 0.01 -
0.005 -
0.002
T
~
~
i
~
s
i
~
1
'1
0.1
0.2
0.5
1
2
5
10
20
50
100
200
Drainage area (km 2)
Figure 15.21. Regression relationships of drainage area to fan area and fan gradient for three different
regions (Harvey, 1984a).
365
200
,
Spanish Fans
100
Californian Coast Ranges
50 -I
Death Valley Region
20
10
E
v
5
t"
u_
2
p
pJ
p
J
J
I
f
i
I
f
/
jpl
j#
J
f
/
/
p
.J
J
f
f
f
f
jJ
jJ
J
f
f
t
P
f
ff
/
/
f
i
jJ
J
j
f
P
/
/
J
/
J
f
J
S
0.5
0.2
0.1
p
/
I
I
I
I
I
I
I
I
0.2 -
0.1
-
0.05
0.02 -
t'u.. 0.01 -
0.005 -
0.002
T
~
~
i
~
s
i
~
1
'1
0.1
0.2
0.5
1
2
5
10
20
50
100
200
Drainage area (km 2)
Figure 15.21. Regression relationships of drainage area to fan area and fan gradient for three different
regions (Harvey, 1984a).