forcing at stations to the south. A response 30-50% greater than inverse 

 barometric remains unexplained from Tonno to San Francisco. (Authors). 



052 CHOWDHURY, J. K. 1989. "Effect of Global Temperature Rise on the 

 Coastlines of Bangladesh," Magoon, 0. T., Converse, H. , Miner, D., Tobin, 

 L. T. and Clark, D. , eds . , Proceedings of Coastal Zone '89 . American Society 

 of Civil Engineers, Vol 2, pp 1360-1369. 



Accumulation of CO- in the earth's atmosphere due to ever increasing use 

 of fossil fuel is threatening the delicate balance of the earth's climate. 

 This imbalance could change our climate similar to conditions that existed 

 4,000 to 8,000 years ago by the middle of next century. Such a drastic 

 climatic change in such a short time would negatively effect all of us in this 

 planet. These effects could be catastrophic to the coastal low lying areas. 

 One of the most devastating effect could take place in Bangladesh due to its 

 geographic location and geomorphic conditions. (Modified Abstract). 



053 CISNE, J. L. , and GILDNER, R. F. 1988. "Measurement of Sea-Level 

 Change in Epeiric Seas," The Middle Ordovician Transgression in the North 

 American Midcontinent" , Wilgus, C. K. , Hastings, B. S., Kendall, C. G., 

 Posamentier, H. W. , Ross, C.A., and Van Wagoner, J. C, eds., Sea-Level 

 Changes: An Integrated Approach , Special Publication No. 42, Society of 

 Economic Paleontologists and Mineralogists, Tulsa, OK, pp 217-226. 



Carbonate sediments of tectonically quiescent continental interiors are 

 nearly ideal for precisely tracing eustatic sea- level change during major 

 transgressions. Over roughly 10 million years during the later Middle 

 Ordovician (Rocklandian through the middle Denmarkian stages), sea-levels 

 measured in the American Midwest rose about 10 m relative to the continent. 

 Because the sediment accumulation rate in the epeiric sea was proportional to 

 water depth, the time trend of sea-level can be reconstructed from cumulative 

 sediment thickness and from measurements on water depth throughout a strati- 

 graphic section. Sea-level is reconstructed as a function of time for six 

 sections in the midwestern United States, and the reconstructed time trends 

 are compared for common eustatic components based on the section time correla- 

 tions by geochemically fingerprinted volcanic-ash layers. Relative water 

 depth is measured through gradient analysis of fossils assemblages by 

 reciprocal averaging ordination. Sample ordination scores are calibrated as a 

 measure of absolute depth by use of the offshore depth estimated from strati- 

 graphic expressions of the shoreline edge effect in lithospheric flexure. 

 Sea- level change during the Middle Ordovician transgression had at least two 

 components: (1) a steady rise at slowly varying rate around 1 m per million 

 years (2) pulses no more than 0.1 to 1 million years long during which sea- 

 level fell roughly 1 m and then rose about the same amount. The long-term 

 trend is attributable to steady decrease in the mean age of oceanic 

 lithosphere. The pulse correlations from section to section and the 

 remarkably small sea- level changes involved testify to the tectonic 

 quiescence, spatial homogeneity, and essential tidelessness of the epeiric 

 sea, and to the precision of its stratigraphic record. Pulses were probably 



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