10.3 Organic Matter Production
o
...J
UJ
>=
U
5 LI:
U
o
UJ
Q..
Cf)
a
10
20
30
SOURCES AND TYPES OF TERRESTRIAL
CARBON FLUX RATES TO THE OCEAN
x 10 6 tC/a
TROPICAL
DRY
40
50
POLAR
60
ro
00
00
100
AREA CONSIDERED x 10 3 km 2
465
b PRIMARY PRODUCTION AND
OC BURIAL IN THE OCEAN
UNITS x 10 12 gC/a 0: 10 6 tC/a
GLOBAL MARINE OC BURIAL RATE, OCBR ... 140.160,
OF THESE ARE 30 % OF RIVERINE, 20% OF EOLlAN,
AND 50% OF MARINE ORIGIN
TERR TOC 430
EOLIAN INPUT
.
=
COAST AL ZONES
HIGH-PRODUCTIVITY (7) 300 \
ÖPEN OCEAN
~" "
y~O~E;;t;;O_~ __ ) __ I~or;;'~°ftJ°O.~ i
7 ---~
0 .8%
I
J
I
I
:
,
ORGANIC CARBON
~~~"77i!i")I r---..
I OC BURIAL
I
I
I
: ;
,:
BURIAL RATE, OCBR", 1 0 %
(7) 5 %
I
I
I
I
I
I
ANOXIC B.
~----------~vr------~
OCBR 0: 85-90%
(SHALLOW-WATER CARBONATES -4%1
I (7) 10%
0.04%
~-1 %
6 %
3 %
'~'----------~y~----------~I
10-15%
HYDROCARBON INDEX
1000 (mg HC /g Corg)
500
c
OC PRIMARY PRODUCTION, PP, NEW PRODUCTION,
NP, AND EXPORT PRODUCTION, EP,
200
100
50
2
MARINE OM (%)
80
60
40
20
100
20
40
60
80
TERRESTRIAL OM (%)
190
PP
o
50
100 NP
400
~"
d
~
~
200 ~
i:.'
~
~
~
_0,2
,g 1
0
NP
0
200