| Autor: |
Rice, Addison, Nooteboom, Peter Dirk, van Sebille, Erik, Peterse, Francien, Ziegler, Martin, Sluijs, Appy, Marine Palynology, Marine and Atmospheric Research, Marine palynology and palaeoceanography, Sub Physical Oceanography, Organic geochemistry, Stratigraphy and paleontology |
| Přispěvatelé: |
Marine Palynology, Marine and Atmospheric Research, Marine palynology and palaeoceanography, Sub Physical Oceanography, Organic geochemistry, Stratigraphy and paleontology |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Geophysical Research Letters, 49(4), 1. Wiley Online Library |
| ISSN: |
0094-8276 |
| Popis: |
Some lipid-biomarker-based sea surface temperature (SST) proxies applied in the modern Mediterranean Sea exhibit large offsets from expected values, generating uncertainties in climate reconstructions. Lateral transport of proxy carriers along ocean currents prior to burial can contribute to this offset between reconstructed and expected SSTs. We perform virtual particle tracking experiments to simulate transport prior to and during sinking and derive a quantitative estimate of transport bias for alkenones and glycerol dibiphytanyl glycerol tetraethers (GDGTs), which form the basis of the UK’37 and TEX86 paleothermometers, respectively. We use a simple 30-day surface advection scenario and sinking speeds appropriate for the export of various proxy carriers (6, 12, 25, 50, 100, 250, 500, and 1000 md−1). For the assessed scenarios, lateral transport bias is generally small (always |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
Plný text