Conrad 2802
2oo r----.-----.----.-----.-----,----.-----.--__ - . ____ . -__ ~
'ii 150
'"
.§.
~'00
E
o
c:
i- 50
>
l!
(!)
0
- 26
- 24
-22
-20
- 8
15 r - - - - .- -- - - . - - - -- , - -- - . - - - - - , - - - - ,- - - - - .- - - - - . - - - - . -__ - - .
10
- 15
mean = - 0 .318
rms = 3 .57 mgal
"
)
. ~
(
. ). ~
..
t~ , •. ~ ' .' ; .~ flI..l . (: l .. ,.\(. . . i~;
I ~ ~\ :~t:!f, '1~ft':.. IV!,it if' .;:; ;\,! i ;.\. J ' ~ ~ : ¥if.. ' :.i .
• '
,, " f r "
1 .. '
.', ,, :'(0:. .. . \
~~.4
t ;;. . if\;
' O,
" ' " 'S . ' : ;
;
f
."
-..,
t
~ ..
.
. . . ~
.- ,
,. .
~
.
-20,~--- -~26 ~--~2 ~ 4----- ~2~ 2 -----7. 20~----1~ 8-----~ ,6 ~--- -~ ,4------1~ 2 -----~ ,0----~ -8
latitude
Fig. 6. Comparison of shipboard gravity profile (solid) with gravity profile derived
from a 62-fold stack of Geosat altimeter profiles (dashed). The difference was not
computed at -21.5°S latitude where the ship track deviates from the satellite track to
avoid an island.
A gridded file of gravity anomalies is available by anonymous ftp (baltica.ucsd.edu). A
large format, laminated poster is available from the SIO Geological Data Center (619) 5342752.
References
Andersen, O. B., P. Knusen, and C. C. Tscherning, Investigation of methods for global
gravity field recovery from the dense ERS-l Geodetic Mission altimetry, IUGG XXI
General Assembly, IAG/G3, Boulder Colorado, USA, 1995.
Brammer, R. F., Estimation of the ocean geoid near the Blake Escarpment using Geos-3
satellite altimetry data, J. Geophys. Res., 84,3843-3860, 1979.
Haxby, W. F., and D. E. Hayes, Free-air gravity of the Southern Ocean derived from
Seasat and Geosat altimeter data: Circum-Antarctic to 30S. Edited by D.E. Hayes.
Marine Geological and Geophysical Atlas of the Circum-Antarctic to 30S. American
Geophysical Union, 1991.
Haxby, W. F., G. D. Karner, J. L. LaBrecque, and J. K. Weissel, Digital images of
combined oceanic and continental data sets and their use in tectonic studies, EOS Trans.
Amer. Geophys. Un., 64, 995-1004, 1983.
18
2oo r----.-----.----.-----.-----,----.-----.--__ - . ____ . -__ ~
'ii 150
'"
.§.
~'00
E
o
c:
i- 50
>
l!
(!)
0
- 26
- 24
-22
-20
- 8
15 r - - - - .- -- - - . - - - -- , - -- - . - - - - - , - - - - ,- - - - - .- - - - - . - - - - . -__ - - .
10
- 15
mean = - 0 .318
rms = 3 .57 mgal
"
)
. ~
(
. ). ~
..
t~ , •. ~ ' .' ; .~ flI..l . (: l .. ,.\(. . . i~;
I ~ ~\ :~t:!f, '1~ft':.. IV!,it if' .;:; ;\,! i ;.\. J ' ~ ~ : ¥if.. ' :.i .
• '
,, " f r "
1 .. '
.', ,, :'(0:. .. . \
~~.4
t ;;. . if\;
' O,
" ' " 'S . ' : ;
;
f
."
-..,
t
~ ..
.
. . . ~
.- ,
,. .
~
.
-20,~--- -~26 ~--~2 ~ 4----- ~2~ 2 -----7. 20~----1~ 8-----~ ,6 ~--- -~ ,4------1~ 2 -----~ ,0----~ -8
latitude
Fig. 6. Comparison of shipboard gravity profile (solid) with gravity profile derived
from a 62-fold stack of Geosat altimeter profiles (dashed). The difference was not
computed at -21.5°S latitude where the ship track deviates from the satellite track to
avoid an island.
A gridded file of gravity anomalies is available by anonymous ftp (baltica.ucsd.edu). A
large format, laminated poster is available from the SIO Geological Data Center (619) 5342752.
References
Andersen, O. B., P. Knusen, and C. C. Tscherning, Investigation of methods for global
gravity field recovery from the dense ERS-l Geodetic Mission altimetry, IUGG XXI
General Assembly, IAG/G3, Boulder Colorado, USA, 1995.
Brammer, R. F., Estimation of the ocean geoid near the Blake Escarpment using Geos-3
satellite altimetry data, J. Geophys. Res., 84,3843-3860, 1979.
Haxby, W. F., and D. E. Hayes, Free-air gravity of the Southern Ocean derived from
Seasat and Geosat altimeter data: Circum-Antarctic to 30S. Edited by D.E. Hayes.
Marine Geological and Geophysical Atlas of the Circum-Antarctic to 30S. American
Geophysical Union, 1991.
Haxby, W. F., G. D. Karner, J. L. LaBrecque, and J. K. Weissel, Digital images of
combined oceanic and continental data sets and their use in tectonic studies, EOS Trans.
Amer. Geophys. Un., 64, 995-1004, 1983.
18