8.2 Methods for Determining Subsidence
FACTORS MODIFYING SUBSIDENCE HISTORY
a
b
c
d
e
f
SL-RISE, NO SED
SED < SUB
CONST ANT SEA LEVEL
SL-FALL, ER
_ .. _ , - L __ . __ ~ ... - - , , -
EU
EU
THERMOTECTONIC
SUBSIDENCE
+ LOAD OF
SEDIMENTFILLED BASIN
Pm
S
----- Sf
LEVEL OF ISOSTATIC
-fCOMPENSATION ---;:.....;;;;"----.1.---------'
9
SED = SUB
t...
EU
r~'~+fI
b' CONSTANT SL
,
C CONST ANT SL, NO SED
d' CONSTANT SL, ER
a
b
l~
,
TIME
h' s
d
e SL-RISE, NO SED
e .k
f' SL-RISE, ONGOING SED
t .
.-.-!.
,
9 SL-RISE, INCR. SED
_2-t
.-EU
__ - - - : EU
a _
.
.: EU
- - - - - - T
(REDUCED SUB)
h' s
h LONG -TERM SUBSIDENCE ANALYSIS
FALLING
SEA LEVEL
TIME
_ {C~\~~~_
.... NORMAL·
CUAVE OF
SEDIMENT -FILLED
BASIN
/
INTERPOLATED
- -
>
OBSEAVED
DEVIATION FAOM
"'NORMAL' CUAVE
- - --t" f""
h l
S
(lNCREASED SUB)
HIGH SEA LE VEL
(e) L (t) (9) (b) EROSION
--- - -
o
I
I0..
W
o
397