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. https://dx.doi.org/10.3989/scimar.2009.73n2287
In: Scientia Marina (Barcelona). Consejo Superior de Investigaciones Científicas. Institut de Ciènces del Mar: Barcelona. ISSN 0214-8358; e-ISSN 1886-8134, more
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| Keywords |
Cesium 137
Chemical elements > Metals > Heavy metals
Concentration
Dating
Foraminifera
Isotopes > Lead isotopes > Lead 210
Levels > Water levels > Sea level
Transfer functions
Water bodies > Inland waters > Wetlands > Marshes
ANE, Biscay Bay [Marine Regions]
Marine/Coastal |
| Author keywords |
marsh foraminifera; transfer function; Cs-137; heavy metalconcentrations; Pb-210 dating; sea level; Bay of Biscay |
| 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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