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Table 4. Chemical composition of polymetallic nodules from the Indian OceanBasin/Ridge No. of No. of Maximumlocations analyses M n Fe Ni Cu CO Ni+Cu+CoCentral Indian Ocean 48 84 19.33 12.75 0.71 0.55 ,0.121.26Wharton Basin 81 105 17.99 11.73 0.49 0.33 0.20 1.03South Australian Basin 13 25 19.00 13.40 0.68 0.34 0.17 1 .i9Crozet Basin 31 68 13.49 15.93 0.33 0.15 0.20 0.68MadgascarBasin 28 64 14.55 19.60 0.28 0.14 0.34 0.68Mozambique Basin 46 101 11.82 16.05 0.41 0.12 0.21 0.73Seychelles/Somali Basin 37 323 18.12 16.61 0.36 0.12 0.40 0.85Carlsberg Ridge 28 73 12.67 17.50 0.25 0.11 0.20 0.58Average Indian Ocean 299 818 15.42 15.75 0.40 Oil6 0.30 0.88Central Indian Ocean 48 84 1.80 4.50 0.50 0.06 0.04 0.15Wharton Basin 81 105 3.47 3.80 0.06 0.04 0.03 .0.13South Australian Basin 13 25 2.43 5.35 0.03 0.01 0.03 0.07Crozet Basin 31 68 5.00 8.00 0.10 0.09 0.08 0.18Madgascar Basin 28 64 8.50 9.70 0.06 0.06 0.08 0.20Mozambique Basin 46 101 0.79 4.25 0.01 0.05 0.01 0.70SeychelledSomali Basin 37 323 3.72 1.33 0.09 0.02 0.03 0.14Carlsberg Ridge 28 73 1.50 9.60 0.02 0.02 0.03 0.07Average Indian Ocean 299 818 0.79 1.33 0.01 0.01 0.01 0.07From: UNOET/SIO <strong>Data</strong> Bank139
Table 4. Chemical composition of polyrnetallic nodules from the Indian Ocean(continued)BasidRidge No. of No. of Averagelocations analyses Mn Fe Ni Cu CO Ni+Cu+CoCenaal Indian Ocean488432.2524.901.57 1.64 0.393.60Wharton Basin8110526.2618.761.10 1-01 0.682.79South Australian Basin132527.6019.200.95 0.63 0.311.89Crozet Basin316818.6023.300.74 0.31 0.451.50Madgascar Basin286419.5026.450.75 0.29 0.691.63Mozambique Basin4610123.8042.501.20 0.32 0.612.13Seychelles/Somali Basin3732332.3024.130.79 0.48 1.042.3 1Carlsberg Ridge287324.3022.700.81 0.30 0.411.52Average Indian Ocean29981832.3042.501.57 1.64 1.043.6014 0
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Intergovernmental Oceanographic Com
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of the IOC Marine Pollution Monitor
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PageMARGINAL SEASSTORM SURGES IN TH
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Marine PollutionAt present, marine
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THE INDIAN OCEAN --- AN ENVIRONMENT
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The subtropical anticyclonic gyre i
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GEOLOGICALBecause of its asymmetric
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RADIOACTIVE AND THERMAL WASTESIn co
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RESEARCH AND MONITORING ACTIVITIESM
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2-5, Mn 3-7, Zn 8-31, Fe 35-94, Pb
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Localized problems, both short-term
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HOLEMAN, J.N. (1968). The sediment
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UNEP/UNIDO (1982a). Industrial sour
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0-5-24 -I I I I I I I I I 11--25- A
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I*in '0( U N '0- '0 '0 N , p d'0I I
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C'EO IIFigure 6. Observations of oi
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Table 2.Ranges of Dissolved heavy m
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d.2 W2n2 n z0U.IzIO N m mENmIYEE*Ed
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Table 6. Population and related dat
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PROBLEMS IN THE PHYSICAL OCEANOGRAP
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B2: How does the Agulhas Current in
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0Q0mbWbvx(U49
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Figure 6 Average wind stress curl f
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THE DESTRUCTION OF THE TETHYS AND P
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part of the Seychelles-Mascarene bl
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Much of the old Tethys seafloor has
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when there was little or no movemen
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scouring of the sediments by cold b
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CANDE, S.C. and MUTTER, J.C. (1982)
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SHACKLETON, N.J. and KENNETT, J.P.
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0EYNz 10c2XaYWeKB20LuUz a5 cl300 10
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CALCAREOUS FORAMINIFERANANNOFOSSIL
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GEOLOGICAL-GEOPHYSICAL MAPPING OF T
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The latest tectonic generalization
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LE PICHON, X. and HEIRTZLER, J.R. (
Page 85 and 86: AN EXAMINATION OF THE FACTORS THAT
Page 87 and 88: is the specific volume anomaly. Po
Page 89 and 90: circulation. At Nagappattinam, Madr
Page 91 and 92: Table 1.MarmagaoCochin1969-781958-7
Page 93 and 94: tFigure 2. An idealized coastal cur
Page 95 and 96: STATION : BOMBAY~ J , F I M .- , A
Page 97 and 98: STATION : COCHIN, J , F , M , A , M
Page 99 and 100: 3007STATION : MADRASI J I F , M I A
Page 101 and 102: STATION : CALCUTTA, J l F , M , A ,
Page 103 and 104: RED TIDE§ IN THE INDO-WEST PACIFIC
Page 105 and 106: were observed as early as 1770 duri
Page 107 and 108: diarrhetic shellfish poisoning (DSP
Page 109 and 110: GACUTAN, R.Q., TABBU, M.Y., AUJERO,
Page 111 and 112: Table 1.Clinical symptoms of variou
Page 113 and 114: Table 3. Fish species implicated in
Page 115 and 116: FIGURE CAPTIONSFigure la. Trichodes
Page 118 and 119: (*14aEE15aHH15c120
Page 120 and 121: MINERAL RESOURCES OF THE INDIAN OCE
Page 122 and 123: tonnes of monazite. Similar deposit
Page 124 and 125: Madagascar and the Red Sea. Within
Page 126 and 127: South Australian Basin: (Figs. 10-1
Page 128 and 129: Offshore placers are likely to occu
Page 130 and 131: MILLIMAN, J.D. (1974). Marine Carbo
Page 132 and 133: Thailand Tin 5560 (1980) NA 4.2 (19
Page 134 and 135: Table 2. The range (in percent) of
Page 138 and 139: 141FIGURE - 1
Page 140 and 141: ~IT 73qw p' le' IS IFigure 4. Map s
Page 142 and 143: @A5 3 9 93 3 s 3 m4P 8O C ' . .' ,
Page 144 and 145: Figure 10. Map showng the abundance
Page 146 and 147: Figure 14. Map showing the distribu
Page 148 and 149: IFigure 17. Marine mineral explorat
Page 150 and 151: central are corals to the integrity
Page 152 and 153: Very little information is availabl
Page 154 and 155: leaving little trace of their exist
Page 156 and 157: REFERENCESAGASSIZ, A. (1903). The c
Page 158 and 159: PILLAI, C.S.G. (1969b). Studies on
Page 160 and 161: Table 1.Extent of damage to coral r
Page 162 and 163: STATUS OF CRITICAL MARINE HABITATS
Page 164 and 165: OCCURRENCEThe distribution of reefs
Page 166 and 167: Mining of Reef RockMining of reef r
Page 168 and 169: -resource. Their significance deriv
Page 170 and 171: Coating of Aerial Roots by Fine Sed
Page 172 and 173: associated with the roots (e.g. GOE
Page 174 and 175: Temperature and SalinityThe effects
Page 176 and 177: significant numbers in the Red Sea,
Page 178 and 179: mersas are known to serve as nurser
Page 180 and 181: BURCHARD, J.E. (1979). Coral fauna
Page 182 and 183: HIRTH, H.F., KLIKOFF, L.G. and HARP
Page 184 and 185: MacNAE, W. (1974). Mangrove forests
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RINKEVITCH, B. and LOYA, Y. (1977).
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WALKER, D.I. and ORMOND, R.F.G. (19
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DAMMING AND DIVERSION OF RIVERSIn d
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FUTURE STUDIESWhat can marine scien
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!0OD9 -8 Nc80,a,u-3(dcab(Dbrr)8brr)
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0 0-0 00 O0O 0% LD d- m cu 0 0202
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STORM SURGES IN THE BAY OF BENGAL*T
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low pressure centres over the Bay i
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ACKNOWLEDGEMENTSThe writers wish to
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Table 1.Latitude and longitude of p
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214
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0Poa9nU0m0Yan-I2li7mYUVQk?401mc0mYm
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0In218
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221
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Table 3. Nomenclature used by India
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ANDHRAB A Y OFB E N G A L ,.16'LO 4
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INDIABAY OF-Point CalirnereLanka L-
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pressure in the South Pacific and l
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SWALLOW, J.C. (1983). Arabian Sea c
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234
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236
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scale wind phenomenon that occurs w
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Several two-dimensional models of t
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HARTMANN, M., LANGE, H., SEIBOLD, E
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Y-Model Domaint=6hrs.b-250 0 59 Xw-
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UELEVATIONS (m) ai 18 HOURS L2:-+EL
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HARMONIC CONSTITUENT K,Figure 8. Ob
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Age of Semi-Diurnal Tide (hrs)28".+
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! 5"BOTTOMFigure 13. Predicted mode
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OCEANOGRAPHIC CONDITIONS PELAGIC PR
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Low oxygen content in subsurface wa
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R/V Dr. F. Nansen trawl of 41 m hea
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thermocline temperature decreases s
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Nitrate - NitrogenSimilarly to phos
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The maximum standing stocks in the
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By April/May the demersal stocks ha
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in 6 months when spawning occurs. T
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REFERENCES3BANSE, K. (1968). Hydrog
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GILSON, H.C., (1937). The nitrogen
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ROYAL SOCIETY (1963). International
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APPENDIX:REGIONAL COOPERATIVE INVES
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20 015 20 25FEBOC015 20 25 30 35M A
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W0-8w0-Inww[r3a+eW281
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B35 36 a7 XlO+ 35 36 a7- Mar--- Fob
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a, A
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...... :'I. .. ,... .. 8.*.. ... ._
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ASTAT.Si -Si (OH14 in p M - d ~ n -
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YU0IwYY->02(33-1 II 1amLyY>02(33amL
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I I I I I10 Ic L0U0mI(dw -rlo u0w m
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III I I I0. 1....w'3...-0U-J..,....
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297
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clearly is too low. Because of low
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KARBE, L., THIEL, H., WEIKERT, H. a
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50010001 scoOxygen (rnl/l)0I1I2I3I4
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c1 oc50C10001500_j_///.///II:I? 0:3
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THE RED SEAPHYSIOGRAPHYThe Red Sea
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intensity of magnetization which co
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1969; SEARLE and ROSS, 1975). This
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y normal faulting. This is most int
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South of 19"N, the McKENZIE pole no
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BAUMANN, A., RICHTER, H. and SCHOEL
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EYAL, M., EYAL, Y., BARTOV, Y. and
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LEWIS, B.T.R. (1983). The process o
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TARLING, D.H. and MITCHELL, J.G. (1
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mC- 1000- 2000- 3000E0Figure 2.Sche
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-20b-0,20wFigure 4. Seismicity and
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kmaFigure 6. Summary of seismic ref
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kQ)Um 5U0c04 3N 4COQ)k3M*rlk332
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5 b'o w-Y EO'i Ii04!I 0I0I334
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II,'{34/,'0SOMALIAND: N. DANAKILFig
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spreadingvulcanismmblock faultingII
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SUPERFICIAL SEDIMENTS OF NORTHERN R
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normally sorted, with median diamet
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EL-SAYED (1983) used the trace meta
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BEHAIRY, AKA. (1983). Marine transg
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SHUKRI, N.M. (1953). Bottom deposit
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Table 2 Heavy metal concentrations
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EGYPTEl-Morgan 1Bargan IBargan 2Yub
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Figure 4. Distribution of minerals
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ARAGONITEHIGH HG-CALCITEFigure 6. T
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MARINE LIVING RESOURCES OF THE RED
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This elevated productivity may resu
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REVELLE (1981) mentioned that the p
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FISHELSON, L. (1964). Observation o
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