Changes in alkenone and alkenoate distributions during acclimatization to salinity change in Isochrysis galbana: Implication for alkenone-based paleosalinity and paleothermometry
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چکیده
منابع مشابه
Physiological impacts on alkenone paleothermometry
[1] We conducted isothermal (15 C) batch culture experiments with the coccolithophorid Emiliania huxleyi (strain NEPCC 55a) to evaluate the extent to which nutrient and light stress contribute to variability in the alkenone unsaturation index U37 K0. Alkenone content and composition were constant throughout exponential growth in both experiments when nutrients (nitrate and orthophosphate) were ...
متن کاملsimulation and experimental studies for prediction mineral scale formation in oil field during mixing of injection and formation water
abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...
Northern timing of deglaciation in the eastern equatorial Pacific from alkenone paleothermometry
[1] The equatorial cold tongue (ECT) of the eastern Pacific is the most dynamic ocean region in the world’s tropics and sets the tempo for global climate anomalies arising from El Niño–Southern Oscillation (ENSO) events. This region’s deglaciation history and relationship with north and south polar climates remains poorly understood, impeding integration of tropical Pacific ocean-atmosphere dyn...
متن کاملPhysiological responses of lipids in Emiliania huxleyi and Gephyrocapsa oceanica (Haptophyceae) to growth status and their implications for alkenone paleothermometry
The physiological responses of alkenone unsaturation indices to changes in growth status of E. huxleyi and G. oceanica strains isolated from a water sample of the NW Paci®c were examined using an isothermal batch culture system. In both E. huxleyi and G. oceanica the unsaturation index U37 K0 changed during the growth period, but the eects of this change were dierent. This suggests that genot...
متن کاملRelationship of the tetra-unsaturated C37 alkenone to salinity and temperature: Implications for paleoproxy applications
[1] This study assesses the relationship to salinity and temperature of the levels of the tetra-unsaturated 37carbon methyl alkenone (C37:4) in the surface ocean. U37 K0, a measure of the relative abundances of the C37:2 and the C37:3 alkenones, has a well constrained linear relationship to temperature in the open ocean [Prahl and Wakeham, 1987] and is a well-established technique for estimatin...
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ژورنال
عنوان ژورنال: GEOCHEMICAL JOURNAL
سال: 2012
ISSN: 0016-7002
DOI: 10.2343/geochemj.2.0203