864 C. Chemical Ocean0graphy OLR (1981) 28 (12)

An expedition to gather basic ecological information about the islands preparatory to ~ designation as a protected area and marine park found evidence of high primary productivity and nutrient-enriched streamwater input during the April 1976 Northeast Monsoon. Phuket Mar. Biol. Center, Phnket, Thai- land. (mwf)

8t:6503 Matkar, V.M., S. Ganapathy and K.C. Pillai, 1981.

Distrilmflon of Zn, Cu, Mn a ~ F e in ~ y Harbour. Indian J. mar. Sci., 10(1):35-40.

Biologically significant trace elements in seawater, sediments, fish, prawns and crabs were studied spectrophotometrically. Distribution coefficients in suspended silt and bottom sediments were higher than in organisms by an order of magnitude and were in the sequence Z n < C u < M n < F e . Zn and Fe were preferentially accumulated in finer sediment fractions; Cu and Mn, in coarser fractionsl Health Phys. Div., Bhabha Atomic Res. Centre, Bombay 400 085, India.

C50. Seawater con~position

81:6504 Campbell, J.A. and P.A. Yeats, 1981. Dissolved

In the ~ AflluRk Ocean. Earth planet. Sci. Lefts, 530):427-433.

Baffin Bay, Labrador Sea and NW Atlantic Cr concentrations range 3.3-5.2 nM. Although vertical distribution is primarily controlled by advective processes a small surface water depletion is linked to biogeochemieal cycling. Dept. of Oceanography, The Univ., Liverpool, L69 3BX, UK. (bwt)

C80. Plffsieai ~ in seatwater

81:6f~08 Balistrieri, L.S. and J.W. Murray, t981. The swl'ace

d~aUtry of tt0c'tb~ (aVeOOH) h, major ton seawater. Am. J. Sci., 281(6):788-806.

Interactions between goethite and major ions in seawater are experimentally determined, confirming the calculated 'distribution of species on the gocthite surface using a site-binding model for the hydrous oxide-solution interface.' Ability of solid surfaces to scavenge trace metals from natural waters is dis- cussed; using the sit~,binding model to investigate the phenomenon is considered. Dept. of Oceanog., Univ. of Washington, Seattle, Wash. 98195~ USA. (bwt)

81:6506 Haag, W.R., 1981, On the ~ of ~ e

in seawater. Wat. Res., 15(7):93%940.

Experimental evidence is presented showing that halate formation in the presence of sunlight is a major cause of halogen disappearance at all salini- ties, and that bromate, not chlorate, is the primary decomposition product of hypobromite. Oak Ridge National Lab;, p.o. Box X, Oak Ridge, Tenn. 37830, USA. (bwt)

CI10, Radioactivity, radioisotopes

81:6507 Aston, S.R. and D.A. Stanners, 1981. Americium in

intertidal sediments from the coastal e n ~ of Windseale [NW ~ ] . Mar. eollut. Bull., 12(5): 149-153.

Results indicate concentrations in inner estuary sediments are up to 7 times higher than those from the Irish Sea. Am distribution on silt banks is rather constant on a small scale, but varies considerably between silt banks and salt marshes. Int. Lab. of Mar. Radioactivity, Musee Oceanographique, Monaco.

81:6508 Moore, W.S., 1981. The thorium isotope content of

ocean water. Earth planet. Sci. Letts, 53(3):419- 426.

The 'first oceanographically consistent measure- ments of seawater [Pacific Ocean] Th isotope content' show: (1) 23°Th activity in deep waters ~ 10 times greater than in surface waters; (2) similar residence times (1-5 yr) for 23°Th and 22STh in surface waters, but a 10-fold greater residence time (10-100 yr) for 23°Th in deep waters; (3) 232Th concentrations ranging 0.01-0.02 dpm/1000 kg; and (4) manganese nodule tops enriched in Th isotopes via Th adsorp- tion not Th-rich particulates' incorporation. Dept. of Geol., Univ. of South Carolina. Columbia S.C. 29208, USA. (izs)

81:6509 Moore, W.S., K.W. Bruland and Jacqueline Michel,

1981, Fluxes of ~ ~ ~ series iseCo[aes Ila the Santa ~ ~ Earth planet. Sci. Letts, 53(3):391-399.

Material collected by six different types of sediment traps was similar in content and isotopic ratios of uramum, thorium, radium, lead and polonium, indicating that they collected similar particles. Inconsistencies in predicted versus measured fluxes