Mediterranean Sea Surface Radiocarbon Reservoir Age Changes Since the Last Glacial Maximum

Siani, Giuseppe; Paterne, Martine; Michel, Élisabeth; Sulpizio, Roberto; Sbrana, Alessandro; Arnold, Maurice; Haddad, Geoffrey A

doi:10.1126/science.1063649

Cited by 285 publications

(233 citation statements)

References 27 publications

Supporting

Mentioning

212

Contrasting

Order By: Relevance

“…Radiocarbon dates of the fossil shells were calibrated using Fairbanks et al (2005) because, while recognising that this curve may still require revision, it covers the entire period of interest whereas the more established marine radiocarbon calibration curve (Hughen et al, 2004) does not extend beyond 21,000 14 C years. A correction was applied for the Mediterranean Sea reservoir age of 390 years (Siani et al, 2000(Siani et al, , 2001 which is assumed to be invariant.…”

Section: Radiocarbon Dating Of Patella Shellsmentioning

confidence: 99%

“…There are no seasonalresolution SST records in the Mediterranean for the last glacial with which to directly compare the seasonal-resolution results of this study. However, seasonal estimates of Last Glacial Maximum (LGM) SST have been made throughout the Mediterranean Sea using (Fairbanks et al, 2005) and corrected for the Mediterranean Sea reservoir age of 390 year (Siani et al, 2000(Siani et al, , 2001, but may be up to 1500 years too old due to incorporation of dead carbon from limestone rocks. foraminiferal assemblages (Hayes et al, 2005).…”

Section: Past Seasonality In Sst At Gibraltarmentioning

confidence: 99%

See 1 more Smart Citation

Increased seasonality in the Western Mediterranean during the last glacial from limpet shell geochemistry

Ferguson

Henderson

et al. 2011

Earth and Planetary Science Letters

View full text Add to dashboard Cite

Editor: P. DeMenocalKeywords: mollusc seasonality Gibraltar palaeoclimate oxygen isotopesThe seasonal cycle is a fundamental aspect of climate, with a significant influence on mean climate and on human societies. Assessing seasonality in different climate states is therefore important but, outside the tropics, very few palaeoclimate records with seasonal resolution exist and there are currently no glacial-age seasonal-resolution sea-surface-temperature (SST) records at mid to high latitudes. Here we show that both Mg/Ca and oxygen isotope (δ 18 O) ratios in modern limpet (Patella) shells record the seasonal range of SST in the western Mediterranean -a region particularly susceptible to seasonal change. Analysis of a suite of fossil limpet shells from Gibraltar shows that SST seasonality was greater during the last glacial by~2°C as a result of greater winter cooling. These extra-tropical seasonal-resolution SST records for the last glacial suggest that the presence of large ice-sheets in the northern hemisphere enhances winter cooling. This result also indicates that seasonality in the Mediterranean is not well-represented in most palaeoclimate models, which typically show little change in seasonal amplitude, and provides a new test for the accuracy of climate models.

show abstract

Section: Radiocarbon Dating Of Patella Shellsmentioning

confidence: 99%

Section: Past Seasonality In Sst At Gibraltarmentioning

confidence: 99%

Increased seasonality in the Western Mediterranean during the last glacial from limpet shell geochemistry

Ferguson

Henderson

et al. 2011

Earth and Planetary Science Letters

View full text Add to dashboard Cite

show abstract

“…Several studies have suggested the possibility of significant deviations in regional marine reservoir signature from this average value (Goodfriend and Flessa 1997;Ingram and Southon 1997;Siani et al 2001;Reimer and McCormac 2002;Southon et al 2002;Fontugne et al 2004). The reservoir age in coastal areas may also vary with time in relation to environmental changes, which would modify the respective proportion of marine and freshwater inputs.…”

Section: Introductionmentioning

confidence: 97%

Holocene Variations of Radiocarbon Reservoir Ages in a Mediterranean Lagoonal System

et al. 2010

View full text Add to dashboard Cite

ABSTRACT.To obtain a precise radiocarbon Holocene chronology in coastal areas, it is necessary to estimate the modern 14 C reservoir age R(t) and its possible variations with time in relation to paleoenvironmental changes. The modern reservoir 14 C age was estimated by comparing AMS 14 C ages of 2 recent mollusk shells found in sediment cores sampled in the Palavasian lagoonal system (south of France) with ages derived from 210 Pb and 137 Cs data and historical accounts of identifiable storm events. The calculated modern R(t) value of 943 ± 25 14 C yr is about 600 yr higher than the global mean sea surface reservoir age. This high value, probably due to the relative isolation of the lagoon from marine inputs, is in good agreement with other R(t) estimates in Mediterranean lagoonal systems (Zoppi et al. 2001;Sabatier et al. 2008). 14 C ages were also obtained on a series of Holocene mollusk shells sampled at different depths of the ~8-m-long core PB06. Careful examination of the 14 C ages versus depth relationships suggests that R(t) in the past was lower and similar to the value presently measured in the Gulf of Lion (618 ± 30 14 C yr, Siani et al. 2000). The change in R(t) from 618 to 943 yr is thought to result from final closure of the coastal lagoon by the sandy barrier, due to the along-shore sediment transfer.

show abstract

“…However, its distribution through these basins is discontinuous (Ariztegui et al, 2000), and its timing is difficult to constrain due to varying degrees of preservation, problems with calibrating marine radiocarbon ages and the spatial complexity of the circulation and biogeochemical changes which took place (e.g. Thomson et al, 1999;Siani et al, 2001). In spite of its tropical origin, there is increasing evidence that the zone which experienced increased rainfall at this time included the Mediterranean region itself (Rossignol-Strick, 1999;Kallel et al, 1997Kallel et al, , 2000Bar-Matthews et al, 2000, 2003Magny et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Enhanced rainfall in the Western Mediterranean during deposition of sapropel S1: stalagmite evidence from Corchia cave (Central Italy)

Zanchetta

Drysdale

Hellström

et al. 2007

Quaternary Science Reviews

211

200

View full text Add to dashboard Cite

A stable isotope record from a stalagmite collected from Antro del Corchia cave (Apuan Alps, Central Italy), supported by 17 uranium-series ages, indicates enhanced regional rainfall between ca. 8.9 and 7.3 kyr cal. BP at the time of sapropel S1 deposition. Within this phase, the highest rainfall occurred between 7.9 and 7.4 kyr cal. BP. Comparison with different marine and lake records, and in particular with the Soreq Cave record (Israel), suggests substantial in-phase occurrence of enhanced rainfall between the Western and Eastern Mediterranean basins. There is no convincing evidence for major climatic change at the time of the "8.2 ka event".

show abstract

Mediterranean Sea Surface Radiocarbon Reservoir Age Changes Since the Last Glacial Maximum

Cited by 285 publications

References 27 publications

Increased seasonality in the Western Mediterranean during the last glacial from limpet shell geochemistry

Increased seasonality in the Western Mediterranean during the last glacial from limpet shell geochemistry

Holocene Variations of Radiocarbon Reservoir Ages in a Mediterranean Lagoonal System

Enhanced rainfall in the Western Mediterranean during deposition of sapropel S1: stalagmite evidence from Corchia cave (Central Italy)

Contact Info

Product

Resources

About