DOI: 10.1007/s00382-017-3782-y
Scopus记录号: 2-s2.0-85021822299
论文题名: Appraising timing response of paleoenvironmental proxies to the Bond cycle in the western Mediterranean over the last 20 kyr
作者: Rodrigo-Gámiz M. ; Martínez-Ruiz F. ; Rodríguez-Tovar F.J. ; Pardo-Igúzquiza E. ; Ortega-Huertas M.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 50, 期: 2018-07-08 起始页码: 2925
结束页码: 2934
语种: 英语
英文关键词: Bond cycle
; Cross-spectral
; Marine record
; Paleoenvironmental proxies
; Western Mediterranean
英文摘要: 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. © 2017, Springer-Verlag GmbH Germany. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109384
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Instituto Andaluz de Ciencias de la Tierra (IACT), Consejo Superior de Investigaciones Científicas-Universidad de Granada (CSIC-UGR), Avda. de las Palmeras 4, Armilla, Granada 18100, Spain; Departamento de Mineralogía y Petrología, Universidad de Granada, Campus Fuentenueva s/n, Granada, 18002, Spain; Departamento de Estratigrafía y Paleontología, Universidad de Granada, Campus Fuentenueva s/n, Granada, 18002, Spain; Instituto Geológico y Minero de España (IGME), Madrid, Spain
Recommended Citation:
Rodrigo-Gámiz M.,Martínez-Ruiz F.,Rodríguez-Tovar F.J.,et al. Appraising timing response of paleoenvironmental proxies to the Bond cycle in the western Mediterranean over the last 20 kyr[J]. Climate Dynamics,2018-01-01,50(2018-07-08)