SEISMIC REFLECTION PROFII · S Approved for public release; distribution unlimited. [0. 1TIC,LECTE...
Transcript of SEISMIC REFLECTION PROFII · S Approved for public release; distribution unlimited. [0. 1TIC,LECTE...
Naval Oceanographic OfficeStennis Space Technical Report ,Center TR 300 -MS 39522-5001 December1989 , U LL COPY
AD-A 2 2 6 050
SEISMIC REFLECTION PROFII
I USNS WILKESI
1977-1979I-
William J. VestalWilliam P. Searcy III DTICGeoacoustics Branch e ECT
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FILES - SOMALI BASIN
DTICELECTE -AUG 27 I990O
1977-1979
LWilliam J. Vestal
j William P. Searcy III D Tk#Geoacoustics Branch ELECTE
AUG27 1990
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Prepared under the authority ofCommanderNaval Oceanography Command
FOREWORD
During the perioe 1977 to 1979, the USNS WILKES recorded some20,000 miles of seismic data in the Somali Basin. Reduced-scalesections of most of the 10-second analogs are reproduced in thisreport as an aid to future research and planning.
ROBERT FELTCaptain, U.S. NavyActing
0D1SCA IME w R im
THIS DOCUMENT IS BEST
QUALITY AVAILABLE. THE COPY
FURNISHED TO DTIC CONTAINED
A SIGNIFICANT NUMBER OF
PAGES WHICH DO NOT
REPRODUCE LEGIBLY
UNCL ASSIFTEDSECURITY CLASSIFICATION OF ThIS PAGE
REPORT DOCUMENTATION PAGE
la REPORT SECURITY CLASSIFICATION lb RESTRICTIVE MARKINGS
UNCLASSI FIED2a, SECURITY CLASSIFICATION AUTHORITY 3 DISTRIBUTION /AVAILABILITY OF REPORT
2b DECLASSIFICATIONIDOWNGRADING SCHEDULE Approved for public release; distributionis unlimited.
4 PERFORMING ORGANIZATION REPORT NUMBER(S) 5 MONITORING ORGANIZATION REPORT NUMBER(S)
TR 300
6a NAME OF PERFORMING ORGANIZATION 6b OFFICE SYMBOL 7a NAME OF MONITORING ORGANIZATION(If applhcable)
Naval Oceanographic Office Commander, Naval Oceanography Command
6C. ADDRESS (Oty, State, and ZIP Code) 7b ADDRESS (City, State, and ZIP Code)
Stennis Space Center Stennis Space CenterMississippi 39522-5001 Mississippi 39529-5000
Ba. NAME OF FUNDING/SPONSORING 8b OFFICE SYMBOL 9 PROCUREMENT INSTRUMENT IDENTIFICATION NUMBERORGANIZATION (If applicable)
Naval Oceanocraphic Office 18c ADDRESS(City, State, and ZIP Code) 10 SOURCE OF FUNDING NUMBERS
PROGRAM PROJECT TASK WORK UNITStennis Space Center ELEMENT NO NO. NO ACCESSION NOMississippi 39522-500111 TITLE (Include Security Classification)
SOMALI BASIN DATA REPORT
12 PERSONAL AUTHOR(S)
Vestal, William J.; Searcy, William P. III13a TYPE OF REPORT 13b TIME COVERED 14 DATE OF REPORT (Year, Month, Day) 115 PAGE COUNT
Technical Report FROM 1977 TO 1979 December 1989 3516 SUPPLEMENTARY NOTATION
17 COSATI CODES 18 SUBJECT TERMS (Continue on reverse if necessary and identify by block number)
FIELD GROUP SUB-GROUP Seismic tracks, USNS WILKES, Somali Basin
19 ABSTRACT (Continue on reverse if necessary and identify by block number)
Photographic reproductions of reduced-scale analogs as a guide to seismic data takenin the Somali Basin during the period 1977-1979. r
By
Avajljbil~ry Codes
S .,Dist aj l lo -
20 OISTRIBUTIONIAVAILABILITY O ABSTRACT 21 ABSTRACT SECURITY CLASSIFICATION
91 UNCLASSIFIED/UNLIMITED 0 SAME AS RPT 0 DTIC USERS UNCLASSI FIED 7I
22a NAME OF RESPONSIBLE INDIVIDUAL 22b TELEPHONE (Include Area Code) 12c OFFICE SYMBOL
DD FORM 1473,84 MAR 83 APR editon may be used until exhausted
All other editions are obsolete -SECURITY CLASSIFICATION OF THIS PAGE
*US GoiCnrnt Ptilni01fCe 11i84-606-24.
UNCLASSIFiED
The Somali Basin and contiguous sedimentary basins comprise aloian inverted L-shaped area of about 1,300,000 square miles in the rep2western Indian Ocean, bounded by the African coasts of Somalia, pro(Kenya, and Tanzania on the west, the Carlsberg Ridge on the north mairand east, and the northwest coast of the Malagasi Republic(Madagascar) and the Amirante Ridge-trench complex on the south-west. hopE
forr,During the period 1977 to 1979, the LJSIS WILKES collected
over 20,000 miles of reflection seismic data in the Somali Basin,
40* 45* so 50 0 40'
C-0),
I*LEGEND /0 101-
ZISHELF Dl TERRACE (BENCH)
SOEFRACTURE ZONE-1
ERISE LiRIFT VALLEY ,tw' )CRSEGI
ABYSSAL HILLS Fj ESCARPMENT .1mo
ABYSSAL PLAIN SEAMOUNTSCIA/
FT) RIDGE [D]CONE /-m*F- BASIN U
99 TRENCH
OCEAN-BASIN HILLS /~(~"
ED8ANK
EJPLATEAUID
0-4/ SOMAI BASI
- I ,-'
I W
5. 5/ 0 Q
/ ~ ii *;'\
O~ 2.. to..~o ~ X
~ K AA$CA'W(lrNY A Sr -
MASCARENE
,COOA' ptiw 1 w, ra BASIN
15. -S 15.
401 451 550 :. 60* 40*
Figure 1. Physiographic Provinces of the Somali Basin.
basins comprise along with bathymetry, magnetics, and other data. Photographic
re miles in the reproductions of much of the ten-second seismic analogs are re-
sts of Somalia, produced in this volume. Emphasis has been placed on data in the
ge on the north main part of the basin where survey tracks were concentrated. - -Lagasi Republicx on the south- This report is not intended as an interpretive study. It is
hoped that the reduced-scale seismic sections will be a convenientformat for future geological studies.
LKES collectedSomali Basin,
60" 40' 45" 50" 55" 60" Gi.
A Y
%' LSBERG%1
RIDGE
IF
R L'
0. :01, P, B,0
P K.
0
. .0
/W
5. S I0'I
T R
15" 504
5 5
Figure 2. Track Chart, USNS Wilkes--Somali Basin, 1977-1979.
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New Data from the Mozambique Channel, Science, 174, 29 Oct.1971, 488-490.nsect of theConference Horder, M.F. and Cronan, D.S., The geochemistry of some basalsediments from the Western Indian Ocean., Oceanological
Acta, V. 4, No. 2, 1981, p. 213-221.njugate Eastmali Basin, Johnson, D.A., Berggren, W.A., and Damuth, J.E., Cretaceous Ocean1988, 78pp. floor in the Amirante Passage: Tectonic and oceanographic
implications, Marine Geology, 47, 1982, p. 331-343.istal struc-urnal Royal Kamen-Kaye, M., Permian to Tertiary faunas and paleogeography:
Somalia, Kenya, Tanzania, Mozambique, Madagascar, SouthAfrica, Journal Petroleum Geology., 1, No. 1, 1978, 79-101.lature, 220,
Kamen-Kaye, M. and Barnes S.U., Exploration geology ofnortheastern Africa-Seychelles Basin, Journal Petroleumture of the Geology., 2, No. 1, 1979, 23-45.L-927.
Katz, M.B., and Premoli, C., India and Madagascar in GondwanalandKidd, R.B., based on matching Precambrian limeaments, Nature, 279,aan, Nature, 312-315.
Kent, P.E., An evaporite basin in southern Tanzania, Salt Basinsiscar and a Around Africa, 41-53.ly Journal Kent, P.E., Major synchronous events in continental shelves,
Tectonophysics, 36, 1976, 87-91.is, Oil and
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Earth and
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Masson, D.G., Kidd, R.B., and Rogers, D.G., Late Cretaceous Segoufin, J.,sediment sample from the Amirante Passage, western Indian MozambiquOcean, Geoloqy, 10, May 1982, 264-266.
Segoufin, J.,Matthews, D.H., The northern end of the Carlsberg Ridge, Canal de
Geological Survey of Canada Paper 66-14, The World Rift Soc. GeolSystem, Sept. 1965, 124-134.
Segoufin, J.Mauge, L.A., Segoufin, J., Verniew, E., and Froget, C., dans le I
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Rabinowitz, P.D., Coffin, M.F., and Falvey, D., The Separation ofMadagascar and Africa, Science, 220, Apr. 1, 1983, 67-69.
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Planetary Science Letters, v. 51, 1980, p. 435-444.
of
i ngern
JD 265 19790919Z08010.8'N 120OZ051*57.8'E 126--!
CRUISE 343916 W77
AFRICAN COAST±95NN1
BJO 317 19791500Z08017.0' N 1800z Cie C/C 060OZ Cie050039. 3' E 12 I I 13' 11 I1116
CRUISE 343921 -- -- ------- Z4AFRICAN COAST±28 NM Y
L_ _7
0 zI
10
CJO 264 19791605Z 1200%I 0600Z06057.3'N ICi051015.8'E -0
CRUISE 343916 0
AFRICAN COAST± 98 NM
PLATE 1IA
A'JD 266 1979
1800OZ J D266 c!1200Z CHAIN RIDGE 06039.9'NI I117iP-- 054010.4'E
c/c 1800Z c/c JD318
1 36*-- 120-- 1
A A
C;: f
)z c/ 6- J 6 4021
I I, C/
18-1~~ ~ ~ ~ _30 30'03'55
'9C,aD2317
10ZC 1800Z / JD319 C/c
131 18* -115it -
PLATE 1lB
C/c 1200Z 1800Z clc C/c
1125'- 105c 135* 1 123- J135*
B~ A
/l
INDEX CHART (PLATES 1A, 1B, 1C)
o' AA'JD 225 1977 JD 225 1970600Z 1854Z02032.3 , N cQc 1200Z c/c 01036.3 ' N060 001. 'E 1116- 1 06042.2' E
CRUISE 343728 0 j
C 5
Ql
B,JD 320 1979
0600Z c/c 2318ZI 130*- - 00009.7' S
059023.7 ' E
i
PLATE 1iCAA'
JD 225 1977C/C 1854Z
01036.3'f~ 42 2 E-4i060j42.'
JD 316 1979JD10428ZJD607006.0'IN 1 ieooz 1200Z 06(049048.4' E 3.6 NiM SOUTH DRIFT
CRIS 4321 0DURING STATIONII
T C
10 i I A I I
JD 260 19792252Z J 6 / 6O05037.3' IN D61c 06Z
CRUISE 343916 0- -
AFRICAN COAST± 102 NM .
0
PLATE 2A
DJD 323 19791128Z04012.1' N053045.2 ' E
CRUISE 343921 0
AFRICAN COAST
± 300 NM 4,
10
CHAIN RIDGEO600Z c/c 1800Z o/c 1200Z
1-316* 32
I a
4
-k;
I - - '° I I - ,i.1I
r-'-
c/c 1200Z c/c c/c JD262 c/c 0600ZI,1.-I0,.-11,2.-I 11,°-
0600Z JD323 1800Z C/C
I I I -- 3 .'
17 7
0600Z JD314 cle 1800Z C/c 1200Z
171
F'JD 262 1979
Ole 1209Z02*40.8'N054 014.9'E
PLATE 2B
dC 060OZ-314*1 JD2 c/ 20OZ OlC
I
120OZ O601)z JD 313 Cc 8OII Cie
_ - 309*1 312-1
~I.4
- V
INDEX CHART (PLATES 2A, 213, 2C)
JD 321 19790220Z
060oz 00033.4' S
.,- 310* 059 015.5' E
"" Ef
JD 311 1979120O 06oz J3121812Z12rZ 0iOZ JO1312010°40.5' S
• "--- 311 ° 059058.2' E
II
.-.-
IL
At -,mkp;7
PLATE 2C
JO 311 19791812Z01040.5' S
iir 059058.2'E
HlJO 260 19790928Z04030.7'N 0600Z d/c JD25S050034.8' E I- 300* 2000Z
CRUISE 343916 0
AFRICAN COAST± 80 NM
4 ,
, MI.
INDEX CHART (PLATES 3A, 3B, 3C)
.-- - - -
PLATE 3A
JD 32 1979JD 325 1979
1615Z01302023.2' N 002004.4' N052635.0' E 137-- 52054.0' E
CRUISE 343921
-4 3
0
- 300, 1319Z
- -332-1 -324-
)e 'A- o'k
JD 168 19771655Z010 50.4'N N6O
050051Y1E I 0/C
CRUISE 343728 0 29V~
z05
Cd,
10
JD 326 19,O OZ c~c c/c JD 326 c/c 0600Z 002.2Z
c/cj055030.8'
1800Z 1200Z c/c 0600Z JD 257
j '3244 -3:
* y-~%.r-477'
Fi .i *t,'- -;~~~~~~~~. % 3,Jn 1,_4 s t1x
Os ;1A
'S s~ J._ _ _ _ _ _ _ f _ _ _ _ _ _ _ _ .j dA Z t - -
18I 120OZ
-~~C ' 4 4 3i-~ .~ 4 /* f0 6 0 O Z
29 * c c 180 Z86 '0
t ---
PLATE 3B
JO 326 19790J905Z
0600Z 00*20.2'NI 055030.84E
ISMi
H'JD 256 19791815Z
JD257 03017.1' S-331'. 055038.9'E
Ai 4~
, 44
f &'
-i 4 ~
JD 166 doC 180oz 1200Z 060(
I 296__
- - .- I .t
'7 .,N
PLATE 3C
1'JD 165 1977
060oZ 0200Z02033.2 S
"--292o 059 032.3'E
Aq
JD 298 19790724Z02058.3' N 1200Z c/c 1800Z /O48 0589gE 124.- jl36-CRUISE 343920 0 126'-
AFRICAN COAST u -*
±100 NIM I~
Co - 4-
Jo 297 19791250Z01058.1'N c/c c/c 0600Z J0297et 8o048000.8' E.I../
CRUISE 343920 0 32131'051- 20AFRICAN COAST I & L±105SNM L
ci,
k
u
tttit 77p
PLATE 4A
C/c 1800Z c/c 1200Z c/c
136*-I 126- 13*
+ A Jv 4t r v Jr f I
I' I~s- Yt ** ~ .
JD 202 19772148 Z00 0 17.2N-051015.4* E
CRUISE 343728 0 _______
AFRICAN COAST±020 NM
z54~
10 -
JD 297 C/c 180OZ C/c 0600z o/c
.30501I -320-1 1~- 324-1
I I t T r
I I t AI A 4 4
-74; A.,~ -
1800Z dCC 0600Z Cie1OZ
JI" 1j129-j113*
14 '4
49 all ~
t t4 p M
4.4
44, T
10JZ J95 2029
Ci JD 9 Ci 18O 1220Z
T%4 ~~ ~11* -- 56 4-C - rz tt., -- .. 4 - 4E
'~ L -,
- C'a*t *'- - -
~77r
PLATE 4B
K'JD 301 19791350Z03019.6' Sc/c 1800Z C/C JD0301 c/c C/c 1200Z 055020.2'E
133* 142*- 1176j 193*-.
~'L-'q
JD 201 19771200Z 0/c 9031.3'S
1 ~ -300-1 055-10.0' E
4,S
~-, T 'i
M' K9 1971220Z03007.8'S052007.3' E
INDEX CHART (PLATES 4A, 4B)
~'-- - - - ' - ' - - - - - - - - - - - - - - - - -- y----.W .
NJo 292 19791603Z02001.9' N 1800Z JD293 cdc 1200Z045 048.6'E j133.- I 120-
CRUISE 343920 0 ______
AFRICAN COAST 44*VI
±12 NM '
0
Jo 292 19791603Z12Z 0o l02001.9'N 10ZOOZ1800z
045048.64E II - 350*1ICRUISE 343920 0________________
AFRICAN COAST - t -"77.!
±12 NM *F
--
-~~~~~ia - ---~-~
4717
Jo 286 19790233Z 00Z10ZJ 800019.8' N00Zl20JD8043043.74 E 139- C/10
CRUISE 343920 0 r
AFRICAN COAST 7±18 NMt vsv; & >I
* 4.
sit r A'
s s
10 :2
PLATE 5A
1200Z C/C 1SOOZ c/c JD 294 c/c 0600Z126i i131 114-
4-'-" 1t-4y-
1800Z CIc 1200Z 0600Z cc J 9
-..-aol-310-1 1
P4t
44
1. 0 V A: '
Jo 295 19790544Z
c/cJD295 03012.91 S130* -052005.6' E
1803Z c/c 1200Z c/c 0600Z C/c
I 305- 1 ~ -300I1
~ -' -r
'4
AA
4 1 -V I 44 <t $ ~-'7 w
41 * 1. 2 -- I .t I" .2
PLATE 5B
N
NY1JD 289 1979
I1 O 150l5Z M'
jC12 051 0 6 .0 04056.5'S N ' .
-~---312 51 O6OR,
0505.8 E
RJD 285 19790237Z00019.8'N JD286 c 180OZ 1200Z043043.7'E j ..... 358-1 I -42
CRUISE 343920 0 342y y27* 4 9 tcl.
AFRICAN COAST i1 1±18 NM *
zI
0D 5 7?-'
FAX,,
0305.3Z JD2206O 4
AFRICAN; COAT-±:± N<
180Z
003-45.0S 060O 282 120 /cJO280400044004E 105- II I"19
CRUISECRIS 343920 0t1 ~!J~f1f rAFRACANCOAN COS±16 N 4 -*<152NM~
CD'
7"j
PLATE 6A
S"?OOZ JD0285 JD 284 1979zlc-7 120Z 1024Z
04014.4'St318' 046 031.9'E
Z c /C JO 28 3 0600z C/
089"- ] A c-
All
120Z 800z J D 196 0600z
0 44 1
,. ' € $ . . . . . . . .
S'JD 284 19790619Z
c/c 1800Z c/c JD 284 04038.5' S'1-0 I I- 046055.0' E
clc JD 197 0600Z 1200Z 180oz
j113ILI
-il-
-9= t211
PLATE 6B
St INDEX CHART (PLATES 6iA, 613)!84 1979
9z38.5'S
'55.0'E
IT
JD 198 1977
120OZ 1oz JD 198 0254Z05
052.3'S
I I I 48*35.0'
4:, o
- -- Alm,
UJD 280 19771608Z1080 1800z cIc JD281 060OZ c/c039 051.0'E 067--l 1085--I t 080 -
CRUISE 343731 0 47 :o v z
AFRICAN COAST , 4
±10 NM -
C'Co~~~ 7 -- ( -4 t
zV
i U4
JD 174 19772000Z03045.2' S 180oz041036.6' E
CRUISE 343728 0
AFRICAN COAST -
±104 NM
zN
0~ , ,-
JD 211 19771500Z 1800Z JD212 060OZ0412.7' S 15"-
040001.3' E
CRUISF 343728 0
At hCAN ,uAs'" -- - A
±23 NM >-Z
co
0
PLATE 7A
0600Z C/c 12002 18002 'D0282
- 1 1080 - I4 IC- I'--r' 244AC*444 ~ .,.~./. . 4- Z' ..
-44
- - - M ~a'~ '4't'.4t4.'4 .. *44 44 .4A
)z 124 064 M.flt 1734444 4
, 4444~ 4
180.3 173O
0600Z 0600 18002 1200200
10*
- 1,
c/c 06OOZ c/c JD 283 0600Z 1200Z
09*L087- CO--- .~ I - . v
C A.
. - .- -4ti2
4"t
,),-~~~, + 1 -'-- -
-29- ..- 59- 1 265'. --
1114* 112' 1 15-- ,' - --
'C V
-- ; 'V- j -
PLATE 7B
060OZ 1200Z c/c 1800Z Jf) 284III -I I
A z - i
711 Tn-1-1Po
- 3. ± ._ _ _ _ _
+ -e -. * .V .? . - K
AA-
JD 172 1977etc 80oz11 54Z
c+ /c IB Z 02055.6-S28' 047025.5' E
4 -~ -n7
00Z1200Z c/c 1800z JD215
_______ I I105r-'j
* 4 4
,. ~4- - -- - 5' - 77
-V ii iA,,rtr-<hkwj -•:; . , ... .+ + ... . : , .=+ H+= * - l ....... .......
- -* 4' -
060OZ c/c 1200Z 180OZ c/c 0600Z
I192 I I091-.-
fit k, tI
-7-
4
w4A i i
"e J2,
-'- 4
S" ' 7-N
W '. - ' -. ' 4w>
I-l
J 214 1977 I-
0206Z / I
07 19.6 's S ,051 30.4' E
;
INDEX CHART (PLATES 7A, 7B, 7C, 7D)
PLATE 7C
_OOZ c/c o600z 1200Z 1800Z JD 2851091- I I091 L
i lI
JD 227 1977
2042Z02°34.9 ' S J D228 0600z059o13.0' E rL-°---
CRUISE 343728 o- ;,.. , - . '
zt
1* \\' , ", "
,S(PLATE7A, 7B, / . . .
W ' 4-v-)-- - - - - - - - - " - - - - - ---
0T20PATES7ASBJ7,22D
dC/ 0600Z 1200Z 1800ZI124*- I
crrfl4-t "1*---4
1200Z eC/ 1800Z JD0229
-- 42~ 12oo*-
-- -- ~~A ,t -" .vu
4-r
PLATE 7D
UlJD 286 1977
18ooz 2159Z04053.8'S062050.8' E
. 1 , i i
JD 229 1979JD 229 00 0800Z
°iz 04030.3,S
062045.5' E• 't,
C
pJD 207 19770902Z03003.7' S 060OZ C/c JD2
CRUISE 343728 4451EJ~2oj
AFRICAN COAST ~*±110 N
Awl
,10 r
p' P,
x , ,
INDEX CHART (PLATES 8A, 813)
PLATE 8A
xJD 268 19771516Z 12OZ06OZ07056.7'S 0Z040 050.6' E I
CRUISE 343731 04C
AFRICAN COAST 4i -
±220 NM -
C3
10-
Z etc JO 207 1800Z 120OZ etc
I * -242'
'AX'
op.
41
"'J T4-
JD 2U8 JI 267 1800Z
I -2 72 JI
r6O 4D 206 ftC 121 6
if itt,
A P
PLATE 8B
-J?
JD 266 19771800Z111 3Z1800Z08032.0' S
-272* 047052.0' E
f mt II
-kg
JD 204 1977
0600Z JD 205 1800Z 124Z
-- 288o C/ 28* 49000.5' E
SU U. -4
jj-, .~ .....
xJD 268 19771516Z 1800Z JD269 0600Z
040050.6' E 003 -
CRUISE 343731 0 .
4- 4 4,-
10 1
JD 275 19790557Z1BO12Z03056.0'S JD 275 8o12Z
040 039.8'ECRUISE 343916 0-
4 ~ 'A-$ I $V> 77
H>14
PLATE 9A
wJD 269 1977
rz 1200Z 160OZ040003.5' E
1200Z 060OZ JD 274 1200Z
-- ~2450I I C4C
AA
-*-~~*-~,* 40', 4, ' ~
*~- -*777
0600Z JD273 1BOOZ
2J 172~ 197(4 U~ ~g- ~ -~r 033y0Z
B,, Y 0205.8'047278'
E'%4-~
CRUISE 43728
K1
iv - :, :.w~#.
1
INDE CHAT7LTE29A993,7C
PLATE 9B
MJD3297 19791630Z01058.1' N 180oz048000.8' E /
CRUISE 343920 0 ----
177,
ccD5
10
1800Z 120OZ 060OZ JO 272 C/c
238* -.- 229-1-29J
7 -l"
JD 172 19770330Z J 7 / 8o 2O ~02058.8'S
- 200-1100 20Z i
CRUISE 343728 0
ell
10
K E CRUISE 343921 BJD0298 1979 JD 31651979 JD 316 19790724Z 0428Z 150OZfl2058.3' N 07006.0' N 08017.00 N
JD 298 048058.9' E 049048.80 E 0600Z0Z 050039.3' E
*112Vc5 - --- 7k
'ILI tP
10
1SOOZ c/c 1200Z 0600Z JD 271 1800Z c/c
~234I] c/c* 21001
Si -- -30-1 -28-
C 4.
1, ~ - f ~z
PLATE 9C343921 B
JD 316 1979150oz08017.0' N050039.3' E
120OZ
-- r
JO 269 19791827Z08024.1' N
JD 271 1800Z dC/ dc C/C JD 27005216E
-224 1 210*1 -274*1 -195' -2001:l -183*24r;2~~Min
JD 169 1977cc060OZ JD 170 c/c 1800Z 02006.4' NI28 1 1 -232*1 97'00433
-~ .4 ,
zJD 261 19772252Z16009.2' S 1800z 1200Z c/c 1800z041008.9' E ] I --- 25°f
CRUISE 343731 o i t
i ~ t .
Z
I. I ig
Li 7
Lot In =41
zJD 261 19772252Z 1800z JD 263 c/c 0600Z
041 008.9'E 070 ° - 032'. 1038-CRUISE 343731 0
JD 214 19771613Z08 026.6' S
JD 215 1200Z
180 (
0 5 0 0 3 .0 ' E 5 8 °- _ -
CRUISE 343728 0
o Lt.u?~
PLATE 1 OA
c/c 18002 1200Z OGOOZ e JD 260
-- 205j I151 12
A
11
A-"
18- JD 1 -2 o 1435Z0o~
04576 S1
/054052.0'E
' -N:t
c/c~~~. 060 c/cJD264 c/
2053Z 0600Z JD 259 18OOZ
.5 1 I I ! 1 1 1 1 7 f t II 1 .
c/c c/c JD 265 0600Z 1200Z
1O35-
;A"-; .4.11. w
4 - -~4 --
BBJO 253 1977
09008.7 ' N 8ooz
0 5 2 0 6 "9 ' E 3 5 3 - --
CRUISE 343731 ' , , ? f'I 1 1> i j '? , i ) "-r "1"" n r*v trf 7"rrr 4
~ 4t 4
T -AoP_. t w
PLATE l OB
1800Z 1200Z /
I\ 18 o 1* A0 Kiii2
t It
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
4
- - 4 7A
JD 265 1977)600Z 1200Z 1800Z 2215Z08033.0' S048008.0' E
rrryr rOrrrvrrvrrqn~~fv-
211
3 - 4 1 $', -m---
-r-
1BOOZ JD254 OGOOZ 1830Z
1-i 7 -" " 3fff
ii 4XIF
'S
21.' ~ 7-
1200Z 060OZ JD 257 2000Z JD 256
T~
, IV
JD 255 19770730ZJD255 060OZ 00019.5'N
; f f
ISO*~
+-
PLATE 1lOC
JD 255 19772000Z JD256 1800Z dl c 120OZ 0730ZI -.----92~I00019.5k S
1 1-22* -92*-199* 051006.0' E
T4 f- 7 a
k if
7j
W"B
INDEX CHART (PLATES 10A, 10B, 10C)
Q o' pJD 335 1977 JD 336 1977 JD 2661724Z 0618Z 2105Z01030.4' S JD336 0030.0' N 06047.c/c049031 5' E 022o- o18*-.- 050015.4' E 05401(
CRUISE 343921 0 y r CRUISE 34391 O
C 5co c
C-7,
10 10
p,JD 204 19770545Z JD 204 1800Z c/c" 1200Z
049021.7' E 266°1 - 216"CRUISE 343728 0
10 -- - - - - - - ' - -
C
A ~ I '~- -'-n
10
JA 198 19771345Z05Z 1800Z JD199 1800Z0 5 3 8 7 ' S c c
048 049.8'E 061*-- I c/c
CRUISE 343728 0 ...
CDui4"--
A- I10-
PLATE 11A
A' y,JD 266 1977 JO 267 19772105Z 1015Z06047.6' N JD26? do 08 011.2'N054010.1' E 005- Ij 348*-- 054010.2 ' E
CRUISE 343916 0
LuL
7 r
JD 203 19771200Z 0942Z
i 00015.6', N--- 216* 051003.7' E
'r- -, r,4r L -, ...
1 ooz JD200 0600Z C/c05-- *05.--
T[
4 t -. .-It ?
-f. - '4- -
-J
JD 201 1977JD 201 060OZ
dc I 01033.4 ' SIJ °64°- 054 058.3'E
PLATE 11iB
INEJHR PAE A 1B
0JD 221 19771824Z JD2ol 600Z 1200Z
056 012.1' E 035-08*
CRUISE 3437280
C-A
-- 0
CRU
AAJD 162 19771224Z 10zJ 6 6o08032.0' S 1BOO C/ J1S06z
CRUISE 343728 0 I
zi *V ij/ - " '
10
PLATE 12A
JD 223 19771200Z c/c 120OZ 1800Z 2251Z
00014.6'N035* 058048.9' E
49 e
JO 227 19772024Z 10 10Z060OZ02034.9' S 0005903.0'
CRUISE 343728 0
z
Li
10
JD 163 19772231Z060OZ C/c 120OZ 1800Z C/c 04 048.5' S
0 46- 028- 058002.5' E,
Aft
JD 224 19770845Z00025.2'N 120OZ 1800z JD 225
058050.0 ' E 034"- I
JD 226 19771830Z00057.9' S 120oz 06007 JD 226
-7-
I t
J044
JD 164 1977 JD 165 197702Z1200Z 1800Z JD 165 02Z
04029.9' S 02033.2',058013.8' E 035-" 059032.3' E
PLATE 12B
ofJD 225 1977
JD22502 032.3' NI 060018.0'
AA'A
JD 225 1977JD 2261854ZJ022601 036.3' N
-211* 061042.2' E
I INDEX CHART (PLATES 12A, 121)
IfJD 165 1977
JD15 0200ZJ65 02 033.2' SI 059032.3'E
TR 300
DISTRIBUTION LIST
CNO (OP-095, OP-096) 2DTIC 3NOARL (Codes 220, 240) 2COMNAVOCEANCOM 1COMNAVSEASYSCOM 1NAVCOASTSYSCEN 1NAVSWC 1NUSC Newport (Codes 3661, 382) 2NUSC New London (Code 61) 1NAVOCEANSYSCEN (Code 633) 1COMNAVAIRPAC (Code 6303E) 1COMSPAWARSYSCOM (PME 124-60) 1COMPACMISTESTCEN (Code 3200-4) 1COMSUBTRAFAC San Diego (Code 120) 1NRL 2NAVOCEANO Code CO 1
CS 1XJL 6L 1O 1OA 1OAGA 50
Lamont Doherty Geological Observatory 3Hawaii Institute of Geophysics 1Scripps Institute of Oceanography 2Oregon State University 1U.S. Geological Survey 1