sea-levels and (2) the indirect effects resulting from climatic changes taking 

 place in response, at least in part, to increasing pollution and modification 

 of the global atmosphere. 



The following are the current views of man's impact on sea-level 

 changes: (1) Man's activities have undoubtedly led to changes in sea- level 

 locally, in response to construction works and subterranean extractive 

 projects; (2) utilization of river waters and construction of coastal dams 

 have clearly influenced the large scale changes, and (3) on the global scale 

 there appear to be some indications of a slight marine transgression which 

 might be due, at least in part, to the effects of accumulation in the Earth's 

 atmosphere of carbon dioxide and other trace gases generated by men's 

 activities. Although some parameters (such as biospheric absorption of 

 increasing atmospheric carbon dioxide) have not yet been adequately assessed, 

 the trend of atmospheric modification by man's activities so far monitored 

 does indicate the possibility that we are about to enter a phase of sea- level 

 rise linked to man's activities. (Authors). 



018 BISCHOFF, J. L. , ROSENBAUER, R. J., and SMITH, G. L. 1985. 



"Uranium- series Dating of Sediments from Searles Lake: Differences Between 



Continental and Marine Climate Records," Science . Vol 227, pp 1222-1224. 



One of the major unresolved questions in Pleistocene paleoclimatology 

 has been whether continental climatic transitions are consistent with the 

 glacial 5^® marine record. Searles Lake in California, now a dry salt pan, is 

 underlain by sediment layers deposited in a succession of lakes whose levels 

 and salinities have fluctuated in response to changes in climate over the last 

 3 X 10^ years. Uranium-series dates on the salt beds range from 35 x 10^ to 

 231 X 10^ years. This range of dates allows identification of lake-sediment 

 horizons that are time correlatives of the boundaries of marine isotope stages 

 from the recent 3/4 boundary back to the 8/9 boundary. The 5/6 boundary coin- 

 cided with a deepening of the lake, but the analogous 1/2 boundary coincided 

 with desiccation. The 3/4, 4/5, 6/7, 7/8, and 8/9 boundaries correspond in 

 age to horizons that record little or no change in sedimentation or climate. 

 These hydrologic results demonstrate that the continental paleo-climate record 

 at this mid-latitude site does not mimic the marine record. (Authors). 



019 BLACKMAN, D. L. 1985. "New Estimates of Annual Sea-Level Maxima in the 

 Bristol Channel," Estuarine . Coastal and Shelf Science . Vol 20, pp 229-232. 



The storms of 13 December 1981 caused observed still water levels in the 

 Britol Channel to exceed previous estimates of the maximum return levels as 

 computed by Graff (1981) . These estimates have now been updated for the ports 

 of Swansea, Cardiff, New Port and Avonmouth using more recent data, including 

 the 1981 event, and some historical data not included by Graff. 

 (Introduction) . 



10 



