Climate change and the Aveiro' s Lagoon (R)evolution (Portugal)

Bastos, Rosário; Pereira, Olegário Nelson Azevedo; Dias, João Alveirinho

http://hdl.handle.net/10400.2/12030

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Authors

Bastos, Rosário

Pereira, Olegário Nelson Azevedo

Dias, João Alveirinho

Abstract(s)

As we retreat into historical time, the attempt to reconstruct past climates and their impact in the ecosystems becomes increasingly complex. This study makes a correlation between solar radiation and the growth of a sandy spit that allowed the formation of the Aveiro’s lagoon. Knowing the controversy surrounding the use of a single proxy for the definition of phenomena as complex as climate fluctuations, whenever possible, a link is established between the average rates of annual progression of the sandy spit with the known data of the NAO (North Atlantic Oscillation) and the great climatic periods. A more intense pace of development is found during the Medieval Warm Period, that is fallen to a speed of about half during the Little Ice Age.