(i.e., basement structures and tectonic provinces in Florida, Georgia, the 

 Carolinas, and the Chesapeake Bay area; fault reactivation in northern New 

 England and the Maritime Provinces) . These results suggest that tide -gage 

 data can be used to determine neotectonic movements along this coastline. 

 Analysis of the temporal patterns of relative sea- level change reveals a 

 gradual increase in the rate of rise centered at about 1934, which may be due 

 to steric expansion of the ocean. Broad peaks in the spectrum of temporal 

 sea-level fluctuations at 3 , 6, and 20 year periodicities (significant at the 

 80 percent level) may be a reflection of oceanographic , atmospheric, and lunar 

 forcing. (Authors). 



031 BROOKES, I. A.. SCOTT, D. B., and McANDREWS , J. H. 1985. "Postglacial 

 Relative Sea-Level Change, Port au Port area, West Newfoundland," Canadian 

 Journal of Earth Sciences . Vol 22, No. 7, pp 1039-1047. 



Based on pollen and foraminifera analyses and radiocarbon dates from two 

 cores taken from salt-marsh deposits bordering Port au Port Bay, southwestern 

 Newfoundland, results show that relative sea- level (RSL) stood at 2.8 ra below 

 present higher high-water level (HHWL) at 2770 + 300 years BP and at 1.8 m at 

 2365 + 175 years BP at the core sites. These samples indicate a rate of late 

 Holocene RSL change from western Newfoundland. We then report other available 

 dates bearing on the earlier RSL record of this area. 



A date of 5800 + 200 years BP fixes the age of minimum RSL in Port 

 au Port Bay at 11-14 m below present. A date of 9350 + 120 years BP from 

 St. George's provides a minimum age for the passage of sea- level below present 

 there. A date 12,600 + 140 years BP from Stephenville fixes a sea- level at 

 29 m above present, whereas one of 13 600 + 110 years BP from Abrahams Cove 

 dates the marine limit at 44 m. These geographically restricted data closely 

 constrain a curve of postglacial RSL change in the Port au Port Bay - northern 

 St. George's Bay area. The form of the curve supports a recent model predict- 

 ing sea-level response to wastage of a limited late Wisconsinan ice load in 

 the wider region. (Modified Abstract) . 



032 BROOKS, D. A. 1977. "Sea-Level Fluctuations Off the Carolina Coasts and 

 Their Relation to Atmospheric Forcing," Center for Marine and Coastal Studies, 

 North Carolina State University, Raleigh, North Carolina, pp 38. 



Atmospheric pressure and wind stress fluctuations are strongly coupled 

 to sea-level fluctuations along the Carolina coasts at periods of 2.5 to 

 3.5 days. Sea-level fluctuations in this band exhibit high coherence over a 

 horizontal separation exceeding 500 km. Phase difference calculations indi- 

 cate southward propagation of the sea- level fluctuations from Beaufort to 

 Wilmington, North Carolina; the data considered are insufficient to conclu- 

 sively determine propagation direction south of Wilmington. The 2.5 - 3.5 day 

 period sea-level fluctuations are consistent with a theoretically expected 

 first mode, barotropic continental shelf wave. It is concluded that continen- 

 tal shelf waves forced by the atmosphere contribute to the shelf and slope 

 water circulation off North Carolina. (Author). 



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