OLR( 1979)26(I 2) B. Chemical Oceanography 773

mixing. Geochim. cosmochim. Acta, 43(6): 919-926.

Findings concerning the relationship between dissolved organic material (DOM) and Fe and Mn in river waters (River Beaulieu and River Test, England) and its implications for the behavior of these components in estuarine mixing are presented. Molecular weight ranges of DOM were determined bv ultrafiltration and found similar in both rivers. Variations in lattice-held and non-lattice-held fractions of Fe and Mn in suspended particulate material were also determined. These variations are discussed from the viewpoint of the contrasting geochemical mobilities of the two elements. Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada. (bwt)

79:5952 Rapin, F., F. Fernex, P. Y. Favarger, J. P. Vernet and

E. Van Dievoet, 1979. R6partition du mercure dans les s6diments marins superficiels du plateau continental de la C6te d'Azur (France, M~di- terranee). [Mercury partitioning in superficial marine sediments on the continental plateau of C6te d'Azur, France.] Revue int. Oc~anogr. M~d., 53/54: 41-49.

Results of a survey of C6tc d 'Azur continental shelf surface sediments for mercury are reported. Concentrations as high as 1.5 ug/kg sediment on the shelf and as high as 13.0 , g / k g in harbors were found in the <63 , m fraction. Laboratoire de Limnog~ologie, Section des Sciences de la Terre, UniversitE de Geneve, 10, Route de Suisse, 1290 Versoix, Switzerland. (bwt)

79:5953 Sevastyanova, E. S., 1979. Estimate of a geochemical

mobility of elements in sedimentary strata. (In Russian; English abstract.) Okeanologiia, 19(2): 344-347.

An improved method for estimating the degree of mobilization and redistribution of chemical components in a sample of alternating oxidized and reduced sediment is suggested. Comparative mobilitv of any pair of components is evaluated bv the relation between their redistributing parts, and a comparison of P and Fe in an Upper Quaternary Ionian Sea sediment is made. (bwt)

79:5954 Warlord, A. L., D. R. Kosiur and P. R. Doose, 1979.

Methane production in Santa Barbara Basin [southern California] sediments. Geornicrobiol. J., 1(2): 117-137.

Mediation of the biogeochemical cycling o f organic matter by anaerobic microbial processes was investigated. In-vitro incubation of anoxic sediments was carried out to determine the variation of methane

production with depth: methane was produced at all depths, including those in which sulfate reduction occurred. Experiments using 14C-labelled substrates indicated that bicarbonate was the principal source of methane and that acetate was oxidized to CO2 in sediments from the methane-producing zone. Clinical Laboratories--Microbiologv, Center for the Health Sciences, University of California, Los Angeles, Calif. 90024, U.S.A. (bwt)

15. Corrosion

79:5955 Gudas, J. P. and H. P. Hack, 1979. Parametric evalu-

ation of susceptibility of Cu-Ni alloys to sulfide- induced corrosion in sea water. Corrosion, 35(6): 259-264.

Sulfide concentration, sea water velocity and duration of exposure were experimentally varied to test the susceptibility of 90/10 and 70/30 Cu-Ni alloys to sulfide corrosion. The latter alloy was found to be somewhat more resistant to long-term, low sulfide exposure. David W. Taylor Naval Ship R&D Center, Bethesda, Md., U.S.A. (rio)

17. Pollution (see also under Biological Oceanography and General)

79:5956 Baxter, M. S., I. G. McKinley, A. B. MacKenzie

and W. Jack, 1979. Windscale [Scotland] radio- caesium in the Clyde Sea area. Mar. Pollut. Bull., 10(4): 116-120.

Radiocaesium derived from a nuclear fuel reprocessing plant poses no major radiological hazard, but does provide a tracer species for evaluating the response of the Clyde Sea area to marine pollution. Flow patterns and average water residence times are investigated. Chemistry Department, University of Glasgow, Glasgow GI28QQ, U.K. (rio)

79:5957 Knap, A. H., P. J. IeB. Williams and Ian Tyler,

1979. Contribution of volatile petroleum hydro- carbons to the organic carbon budget of an estuary. Nature, Lond., 279(57137:517-519.

The importance of chronic, low-level industrial inputs of volatile petroleum hydrocarbons for the carbon budget of a productive estuary is assessed. Results of a three-year study show that seasonal fluctuations in planktonic respiration and photosynthesis can be in part related to anthropogenic input and that volatile components of industrial effluents play a role in the