@misc{10481/72504,
year = {2021},
month = {11},
url = {http://hdl.handle.net/10481/72504},
abstract = {The westernmost Mediterranean is one of the most sensitive areas to global climate change
and high sedimentation rates allow recording high frequency variability. We present a high-resolution
paleotemperature reconstruction over the last 35 kyr using, for the first time, four independent organic sea
surface temperature (SST) proxies (UK'
37, TEXH
86, RI-OH' and LDI) based on alkenones, (hydroxy) isoprenoid
GDGTs, and long-chain diols. We also generated a δ18O of planktonic foraminifera G. bulloides record together
with records of bulk parameters (total organic carbon content, δ13Corg) and the accumulation rates of different
biomarkers to provide insights into terrestrial input and primary producers. All derived-SST records showed
similar trends over the last 35 kyr, revealing abrupt temperature variations during the last seven Dansgaard-
Oeschger (D/O) cycles, the three Heinrich (H) events, the Last Glacial Maximum, and the Younger Dryas.
H3 is recognized as the coldest event, while H1 was recorded by all SST proxies as the most abrupt one.
In general, TEXH
86-, RI-OH'- and LDI-SST estimates were lower than those obtained from UK'
37. The LDI
paleothermometer recorded the largest range of absolute SSTs over the whole period (ca. 20°C) followed by
RI-OH' (ca. 16°C). TEXH
86, RI-OH' and LDI proxies reflected sudden SST changes during the D/O 6 and
5 particularly well. Low BIT values and the abundance of C32 1,15-diol in range with typical marine values
indicated only minor input of continental organic matter. Accumulation rates of different lipid biomarkers were
generally modulated by D/O cycles, suggesting enhanced productivity during D/O interstadials and the Bölling-
Alleröd period.},
organization = {Grants FEDER/Junta de Andalucia-Consejeria de Economia y Conocimiento	PID2019-104624RB-I00
MCIN/AEI/ 10.13039/501100011033
P18-RT-3804
P18-RT- 4074},
organization = {Research Group	RNM-179},
organization = {Unidad Cientifica de Excelencia	UCE-PP2016-05},
organization = {Netherlands Earth System Science Center (NESSC) through a gravitation grant	024.002.001},
organization = {Andalucia Talent Hub Program - European Union's Seventh Framework Program (COFUND-Grant)	291780
Junta de Andalucia},
organization = {Juan de la Cierva-Incorporacion program in the University of Granada from Secretaria de Estado de I + D + i, Spain	IJCI-2017-33,755},
organization = {Universidad de Granada/CBUA},
publisher = {American Geophysical Union},
title = {Rapid Climate Changes in the Westernmost Mediterranean (Alboran Sea) Over the Last 35 kyr: New Insights From Four Lipid Paleothermometers (UK' 37, TEXH 86, RI-OH', and LDI)},
doi = {10.1029/2020PA004171},
author = {Morcillo Montalbá, Laura and Rodrigo Gámiz, Marta and Martínez Ruiz, Francisca and Ortega Huertas, Miguel},
}