Universidad Complutense de Madrid
E-Prints Complutense

Aridity events during the last 4000 years in Western Mediterranean marshes (Almenara and Benicasim marshes, E Spain)

Impacto

Downloads

Downloads per month over past year

Mediato Arribas, José Francisco and Santisteban Navarro, Juan Ignacio and del Moral González, Begoña and Dabrio, Cristino J. (2020) Aridity events during the last 4000 years in Western Mediterranean marshes (Almenara and Benicasim marshes, E Spain). Quaternary International . ISSN 1040-6182 (In Press)

[img]
Preview
PDF
1MB

Official URL: https://www.sciencedirect.com/science/article/abs/pii/S1040618220301853?via%3Dihub



Abstract

Facies and geochemical analysis applied to marsh deposits are useful proxies for the reconstruction of aridity for the last millennia. The comparison of facies and geochemical records among cores from the Almenara and Benicasim marshes allows to identify changes in water level (Si/Al, Al, Ca) and salinity of the feeding waters (Mg/Al, Na/Al, S/Al). These changes, in turn, represent fluctuations in the position of the saline-fresh groundwater boundary, which can be related to variations in sea level and rainfall. For the last 4000 years, three events recording higher salinity conditions (ca. 3.4 ka BP, ca. 3 ka BP and ca. 1.8 ka BP) are noticeable in the record. Comparison to other studies around the Western Mediterranean basin allows us to correlate these events to arid episodes and to identify their forcing mechanisms. These aridity events are correlative to small falls in solar activity and Surface Sea Temperature (SST) during positive North Atlantic Oscillation (NAO) periods. Despite the small magnitude of these changes, the sensitivity of the system amplified the result providing a conspicuous signal.


Item Type:Article
Uncontrolled Keywords:Mediterranean coastal marshes, Geochemical and facies proxies, Aridity events, Sea level, Holocene
Subjects:Sciences > Geology > Stratigraphic geology
Sciences > Geology > Hidrology
ID Code:60588
Deposited On:20 May 2020 09:38
Last Modified:20 May 2020 11:00

Origin of downloads

Repository Staff Only: item control page