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Recent sea-level changes in the southern Bay of Biscay: transfer function reconstructions from salt-marshes compared with instrumental data
Leorri, E.; Cearreta, A. (2009). Recent sea-level changes in the southern Bay of Biscay: transfer function reconstructions from salt-marshes compared with instrumental data. Sci. Mar. (Barc.) 73(2): 287-296
In: Scientia Marina (Barcelona). Consejo Superior de Investigaciones Científicas. Institut de Ciènces del Mar: Barcelona. ISSN 0214-8358, more
Peer reviewed article

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Keywords
    Cesium 137; Concentration; Dating; Foraminifera; Heavy metals; Lead 210; Marshes; Sea level; Transfer functions; ANE, Biscay Bay [Marine Regions]; Marine

Authors  Top 
  • Leorri, E.
  • Cearreta, A.

Abstract
    n order to assess the accuracy and regional significance of salt-marsh reconstructions of former sea level based on foraminiferal transfer functions, we compared the calibration of the foraminiferal assemblages of two salt-marsh cores from two estuaries using the regional transfer function constructed for the southern Bay of Biscay. The foraminifera-based reconstructions were placed into a temporal framework using 137Cs, heavy metal concentrations, and 210Pb-derived sediment accumulation rates. The resulting relative sea-level (RSL) curves were compared with the nearest tide-gauge data (Santander). The two RSL trends from core sediments show excellent agreement and are in very good agreement with instrumental data, providing a regional relative sea-level rise of 1.9 mm yr-1 for the 20th century.

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