Climatic Hazards and Social Transformations in the North Atlantic region and the North American Southwest, 900 to 1500 ce



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Climatic Hazards and Social Transformations in the North Atlantic region and the North American Southwest, 900 to 1500 CE.
by Scott E. Ingram, Andrew Dugmore, Jette Arneborg, George Hambrecht, Michelle Hegmon, Keith Kintigh, Thomas McGovern, Margaret Nelson, Richard Oram, Matthew Peeples, Katherine Spielmann, Orri Vesteinsson
This presentation explores the relationship between climatic hazards and social transformations from 900 to 1500 CE in the North Atlantic region and the North American Southwest. In the North Atlantic, we compare periods of extreme temperatures and storminess to social transformations among the peoples of Greenland, Iceland, Faroes Islands, and Scotland. In the North American Southwest, we compare very dry periods to transformations among the peoples archaeological known as Hohokam, Zuni, Mimbres, and Ancestral Puebloan. Cool temperatures and increased storminess in the North Atlantic and dry periods in the Southwest challenge successful food provisioning, increase the risk of famine, and often stimulate human responses to manage these risks. Possible responses include changes in provisioning, regional-scale settlement reorganizations, the complete depopulation of regions, and/or dramatic social transformations. We hypothesize that climatic hazards occurring at time scales outside of human memory offer the greatest challenges to people. We explore the relationship between these hazards and social transformations in order to provide some tentative, generalizable statements about the influence of climatic conditions on social transformations that crosscut regions.

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