11.2 Denudation-Sediment Accumulation Systems
...
3003
HOGGAR
' "
."
10·
a
' \
..
.:. ~ 3 41 5
h
a r
a
10·
NILE
BASIN
")
-",
493
Fig. 11.7. a Closed
internal drainage basin
of Lake Chad, eentral
N orth Afriea. The lake
is fed primarily by
rivers from the subtropieal mountainous region in the southeast,
while the Sahara desert
in the north eontributes
hardly any water.
(Modified after Gae
1980). b Caspian Sea
and Aral Sea with
mean sediment yields
of their drainage areas
(for spaee reasons indieated only for Caspian
Sea). Note the presenee
of oeeanie erust below
the southern Caspian
Sea
...
3003
HOGGAR
' "
."
10·
a
' \
..
.:. ~ 3 41 5
h
a r
a
10·
NILE
BASIN
")
-",
493
Fig. 11.7. a Closed
internal drainage basin
of Lake Chad, eentral
N orth Afriea. The lake
is fed primarily by
rivers from the subtropieal mountainous region in the southeast,
while the Sahara desert
in the north eontributes
hardly any water.
(Modified after Gae
1980). b Caspian Sea
and Aral Sea with
mean sediment yields
of their drainage areas
(for spaee reasons indieated only for Caspian
Sea). Note the presenee
of oeeanie erust below
the southern Caspian
Sea