File:North.Sea.Periphery.250.500.jpg

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Description North Sea Periphery, c. 250–c. 500: Rising Water Levels and Cooling Climate
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Higham's Rome, Britain and the Anglo-Saxons (ISBN 1-85264-022-7, 1992): cooler, wetter climate and abandonment of British uplands and marginal lands; Berglund's Human impact and climate changes—synchronous events and a causal link? in "Quaternary International", Vol. 105 (2003): Scandinavia, 500AD wetter and rapidly cooling climate and the retreat of agriculture; Ejstrud's The Migration Period, Southern Denmark and the North Sea (ISBN 978-87-992214-1-7, 2008): p28, from 6th century onwards farmlands in Denmark and Norway were abandoned; Issar's Climate changes during the holocene and their impact on Hydrological systems (ISBN 978-0-511-06118-9, 2003): water level rise along NW coast of Europe, wetter conditions in Scandinavia and retreat of farming in Norway after 400, cooler climate in Scotland; Louwe Kooijmans' Archaeology and Coastal Change in the Netherlands (in Archaeology and Coastal Change, 1980): rising water levels along the NW coast of Europe; Louwe Kooijmans' The Rhine/Meuse Delta (PhD thesis, 1974): rising water levels along the NW coast of Europe, and in the Fens and Humber Estuary. Sources are cited in the title box. Abundant material from other sources portrays the same information.

The topographic map is from File:Europe_relief_laea_location_map.jpg, with copyright notice {{self|cc-by-sa-3.0}}, downloaded 9 Oct 2010, with modifications done by myself.
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current19:46, 15 November 2010Thumbnail for version as of 19:46, 15 November 20102,031 × 2,463 (820 KB)Notuncurious{{Information |Description=North Sea Periphery, c. 250–c. 500: Rising Water Levels and Cooling Climate |Source=Higham's ''Rome, Britain and the Anglo-Saxons'' (ISBN 1-85264-022-7, 1992): cooler, wetter climate and abandonment of British uplands and

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