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In-Depth Information
Fig.
8.31
The
apparent-resistivity,
impedance-phase
and
tipper
curves
in
the
model
of
the
asthenosphere
uplift
from
Fig.
8.29
with
parameters
1
=
10 Ohm
·
m
,
h
1
=
1km,
h
2
=
2
=
10000 Ohm
·
m
,
49 km
,
h
=
50 km
,v
=
30 km
,
l
=
900 km
,
3
=
10 Ohm
·
m
.
Elongation
of the three-dimensional uplift
e
=
l
/
2
v
=
15
conductor. The conditions of quasi-two-dimensionality of the asthenosphere uplift
depend on its width 2
The wider the uplift, the less its elongation that provides
quasi-two-dimensionality. Note also that the higher the lithosphere resistivity, the
stronger the galvanic screening and the larger the uplift elongation that provides
v.
Table 8.3
Elongations of asthenosphere uplift providing the tipper quasi-two-dimensionality
(W-2D)
and
the
apparent-resistivity
and
the
impedance-
phase
quasi-two-dimensionality
(
,
-2D)
Lithosphere resistivity (Ohm
·
m)
Uplift width (km)
Uplift elongation
W-2D
,
-2D
1000
30
10
15
60
7
10
10000
60
10
15
