Appraising timing response of paleoenvironmental proxies to the Bond cycle in the western Mediterranean over the last 20 kyr

Show simple item record

dc.contributor.author Rodrigo Gámiz, Marta
dc.contributor.author Martínez-Ruiz, Francisca
dc.contributor.author Rodríguez Tovar, Francisco J.
dc.contributor.author Pardo Iguzquiza, Eulogio
dc.contributor.author Ortega Huertas, Miguel
dc.date.accessioned 2021-02-16T11:52:10Z
dc.date.available 2021-02-16T11:52:10Z
dc.date.issued 2017-07-05
dc.identifier.citation Climate Dynamics, vol.50, 2925–2934 es_ES
dc.identifier.issn 1432-0894
dc.identifier.uri http://hdl.handle.net/20.500.12468/834
dc.description.abstract The timing of climate responses to the Bond cycle is investigated in the western Mediterranean. Periodicities had been previously reported in a marine sediment record from this region spanning the last 20 kyr, and registered by diverse paleoenvironmental proxies, in particular those associated with terrigenous input, redox conditions, productivity, sea surface temperature (SST) and salinity. Further cross-spectral analyses on these time series reveal leads–lags in the 1400 year climate cycle. Considering as reference a terrigenous input proxy (the K/Al ratio), all the paleoenvironmental proxies displayed time shifts varying from ca. 700 year to ca. 350 year. SST and salinity variations show a first leaded response with the inflow of cold and less salty Atlantic waters. Followed by a time lead of 525 year, progresively arid conditions with an increase of eolian dust transport to the area, given by the Zr/Al signal, are observed. The intensification of dust transport could have triggered a latest biological response, lead by 350 year, with an increase of productivity, as suggested by the Ba/Al ratio. Lastly changes in the Mediterranean thermohaline circulation, indicated by a selected redox proxy (the U/Th ratio), are observed. These results support that the oceanic response triggered the atmospheric response to the Bond cycle in the western Mediterranean. Changes in the North Atlantic Oscillation mode and in the Inter-Tropical Convergence Zone migrations with variations in the monsoon activity or Saharan winds system, are considered as main forcing mechanisms, with a complex relationship of the involved phenomena. es_ES
dc.description.sponsorship Instituto Andaluz de Ciencias de la Tierra, Consejo Superior de Investigaciones Científicas, España es_ES
dc.description.sponsorship Instituto Andaluz de Ciencias de la Tierra, Universidad de Granada, España es_ES
dc.description.sponsorship Departamento de Mineralogía y Petrología, Universidad de Granada, España es_ES
dc.description.sponsorship Departamento de Estratigrafía y Paleontología, Universidad de Granada, España es_ES
dc.description.sponsorship Instituto Geológico y Minero de España, España es_ES
dc.language.iso en es_ES
dc.publisher Springer es_ES
dc.relation CGL2015- 66835-P es_ES
dc.relation CGL2015-66830-R es_ES
dc.relation CGL2015-71510-R es_ES
dc.relation RNM 179 es_ES
dc.relation RNM 178 es_ES
dc.relation UCE-PP2016-05 es_ES
dc.rights Acceso abierto es_ES
dc.subject Cross-spectral es_ES
dc.subject Bond cycle es_ES
dc.subject Western Mediterranean es_ES
dc.subject Marine record es_ES
dc.subject Paleoenvironmental proxies es_ES
dc.title Appraising timing response of paleoenvironmental proxies to the Bond cycle in the western Mediterranean over the last 20 kyr es_ES
dc.type Postprint es_ES
dc.relation.publisherversion https://link.springer.com/article/10.1007%2Fs00382-017-3782-y es_ES
dc.description.funder Ministerio de Economía y Competitividad, España es_ES
dc.description.funder Junta de Andalucía, España es_ES
dc.description.funder Universidad de Granada, España es_ES
dc.identifier.doi https://doi.org/10.1007/s00382-017-3782-y es_ES


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


Browse

My Account