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• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Greenland; Kattegat; Nordberg; Orford; Orvik; Greenland ice cores; North Atlantic; North Atlantic oscillation
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.523.9436; http://www.geol.lu.se/personal/bnb/pdf-papers/dinoflagellate_cyst_record.pdf

observations and modeling (Orvik et al., 2001; Schrum, 2001; Lehmann et al., 2002) indicate that climate and hydrological the prevailing southwesterly winds (Fig. 1A), which are known (Fonselius and Valderrama, 2003). In the deep basins, a permanent halocline is present, separating the surface water mass from the dense, oxygen-depleted, and stagnant deep-water column. The deep water can be occasionally renewed by inflows Quaternary Research 67 (20Glacio-chemical measurements on Greenland ice cores reveal that the North Atlantic area has experienced millennial-scale changes in storminess (O'Brien et al., 1995), accompanied by periods of repeated cooling during the late glacial and Holocene as marked by episodic southward advection of polar drift ice (Bond et al., 1997). Persistent storm activities not only shaped the northwestern European coasts in the form of widespread beach-ridge progradations and dune buildings (Clemmensen et al., 2001; Wilson, 2002; Orford et al., 2003), but also exerted a great impact on coastal hydrology and ecology (Nordberg et al., 2000; Stenseth et al., 2002). Both to be a manifestation of the North Atlantic Oscillation (NAO) (Jacobi and Beckmann, 1999). Therefore, reconstructions of past hydrological conditions in the Baltic Sea are particularly important for understanding paleo-atmospheric dynamics in the North Atlantic realm. The brackish-water conditions in the landlocked Baltic basin are primarily maintained by the wind-driven water exchange with the North Sea as well as river discharge (Hanninen et al., 2000; Winsor et al., 2001; Gustafsson and Westman, 2002). Spatial variations of these two processes lead to a distinct salinity gradient between the Kattegat Sea and the Gulf of Bothniatransgression in the southeastern Swedish lowland associated with global sea level rise, and thus the opening of the Danish straits. Both the species diversity and the total accumulation rates of dinoflagellate cysts continued to increase by 7000 cal yr BP and then decreased progressively. This ...