Extreme storms during the last 6500 years from lagoonal sedimentary archives in the Mar Menor (SE Spain)
Storms and tsunamis, which may seriously endanger human society, are amongst the most devastating marine catastrophes that can occur in coastal areas. Many such events are known and have been reported for the Mediterranean, a region where high-frequency occurrences of these extreme events coincides...
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ftcopernicus:oai:publications.copernicus.org:cp49842 2023-05-15T17:32:04+02:00 Extreme storms during the last 6500 years from lagoonal sedimentary archives in the Mar Menor (SE Spain) Dezileau, Laurent Pérez-Ruzafa, Angel Blanchemanche, Philippe Degeai, Jean-Philippe Raji, Otmane Martinez, Philippe Marcos, Concepcion Grafenstein, Ulrich 2018-09-27 application/pdf https://doi.org/10.5194/cp-12-1389-2016 https://cp.copernicus.org/articles/12/1389/2016/ eng eng doi:10.5194/cp-12-1389-2016 https://cp.copernicus.org/articles/12/1389/2016/ eISSN: 1814-9332 Text 2018 ftcopernicus https://doi.org/10.5194/cp-12-1389-2016 2020-07-20T16:24:06Z Storms and tsunamis, which may seriously endanger human society, are amongst the most devastating marine catastrophes that can occur in coastal areas. Many such events are known and have been reported for the Mediterranean, a region where high-frequency occurrences of these extreme events coincides with some of the most densely populated coastal areas in the world. In a sediment core from the Mar Menor (SE Spain), we discovered eight coarse-grained layers which document marine incursions during periods of intense storm activity or tsunami events. Based on radiocarbon dating, these extreme events occurred around 5250, 4000, 3600, 3010, 2300, 1350, 650, and 80 years cal BP. No comparable events have been observed during the 20th and 21st centuries. The results indicate little likelihood of a tsunami origin for these coarse-grained layers, although historical tsunami events are recorded in this region. These periods of surge events seem to coincide with the coldest periods in Europe during the late Holocene, suggesting a control by a climatic mechanism for periods of increased storm activity. Spectral analyses performed on the sand percentage revealed four major periodicities of 1228 ± 327, 732 ± 80, 562 ± 58, and 319 ± 16 years. Amongst the well-known proxies that have revealed a millennial-scale climate variability during the Holocene, the ice-rafted debris (IRD) indices in the North Atlantic developed by Bond et al. (1997, 2001) present a cyclicity of 1470 ± 500 years, which matches the 1228 ± 327-year periodicity evidenced in the Mar Menor, considering the respective uncertainties in the periodicities. Thus, an in-phase storm activity in the western Mediterranean is found with the coldest periods in Europe and with the North Atlantic thermohaline circulation. However, further investigations, such as additional coring and high-resolution coastal imagery, are needed to better constrain the main cause of these multiple events. Text North Atlantic North atlantic Thermohaline circulation Copernicus Publications: E-Journals Climate of the Past 12 6 1389 1400 |
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English |
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Storms and tsunamis, which may seriously endanger human society, are amongst the most devastating marine catastrophes that can occur in coastal areas. Many such events are known and have been reported for the Mediterranean, a region where high-frequency occurrences of these extreme events coincides with some of the most densely populated coastal areas in the world. In a sediment core from the Mar Menor (SE Spain), we discovered eight coarse-grained layers which document marine incursions during periods of intense storm activity or tsunami events. Based on radiocarbon dating, these extreme events occurred around 5250, 4000, 3600, 3010, 2300, 1350, 650, and 80 years cal BP. No comparable events have been observed during the 20th and 21st centuries. The results indicate little likelihood of a tsunami origin for these coarse-grained layers, although historical tsunami events are recorded in this region. These periods of surge events seem to coincide with the coldest periods in Europe during the late Holocene, suggesting a control by a climatic mechanism for periods of increased storm activity. Spectral analyses performed on the sand percentage revealed four major periodicities of 1228 ± 327, 732 ± 80, 562 ± 58, and 319 ± 16 years. Amongst the well-known proxies that have revealed a millennial-scale climate variability during the Holocene, the ice-rafted debris (IRD) indices in the North Atlantic developed by Bond et al. (1997, 2001) present a cyclicity of 1470 ± 500 years, which matches the 1228 ± 327-year periodicity evidenced in the Mar Menor, considering the respective uncertainties in the periodicities. Thus, an in-phase storm activity in the western Mediterranean is found with the coldest periods in Europe and with the North Atlantic thermohaline circulation. However, further investigations, such as additional coring and high-resolution coastal imagery, are needed to better constrain the main cause of these multiple events. |
format |
Text |
author |
Dezileau, Laurent Pérez-Ruzafa, Angel Blanchemanche, Philippe Degeai, Jean-Philippe Raji, Otmane Martinez, Philippe Marcos, Concepcion Grafenstein, Ulrich |
spellingShingle |
Dezileau, Laurent Pérez-Ruzafa, Angel Blanchemanche, Philippe Degeai, Jean-Philippe Raji, Otmane Martinez, Philippe Marcos, Concepcion Grafenstein, Ulrich Extreme storms during the last 6500 years from lagoonal sedimentary archives in the Mar Menor (SE Spain) |
author_facet |
Dezileau, Laurent Pérez-Ruzafa, Angel Blanchemanche, Philippe Degeai, Jean-Philippe Raji, Otmane Martinez, Philippe Marcos, Concepcion Grafenstein, Ulrich |
author_sort |
Dezileau, Laurent |
title |
Extreme storms during the last 6500 years from lagoonal sedimentary archives in the Mar Menor (SE Spain) |
title_short |
Extreme storms during the last 6500 years from lagoonal sedimentary archives in the Mar Menor (SE Spain) |
title_full |
Extreme storms during the last 6500 years from lagoonal sedimentary archives in the Mar Menor (SE Spain) |
title_fullStr |
Extreme storms during the last 6500 years from lagoonal sedimentary archives in the Mar Menor (SE Spain) |
title_full_unstemmed |
Extreme storms during the last 6500 years from lagoonal sedimentary archives in the Mar Menor (SE Spain) |
title_sort |
extreme storms during the last 6500 years from lagoonal sedimentary archives in the mar menor (se spain) |
publishDate |
2018 |
url |
https://doi.org/10.5194/cp-12-1389-2016 https://cp.copernicus.org/articles/12/1389/2016/ |
genre |
North Atlantic North atlantic Thermohaline circulation |
genre_facet |
North Atlantic North atlantic Thermohaline circulation |
op_source |
eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-12-1389-2016 https://cp.copernicus.org/articles/12/1389/2016/ |
op_doi |
https://doi.org/10.5194/cp-12-1389-2016 |
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Climate of the Past |
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12 |
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6 |
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1389 |
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1400 |
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1766130009668321280 |