Browsing Oceanography by Subject "Paleoclimate science"
Now showing items 1-6 of 6
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Growth, chamber formation, and microscale heterogeneity in planktic foraminifera: Implications for paleoclimate proxies
The calcite tests of planktic foraminifera contain a number of geochemical proxies, which are often used to determine past ocean conditions. However, the incorporation of these proxies into the test is often affected by ... -
Hydrogen Isotopes from Lipid Biomarkers: Purification, Field Calibration, and Application to Reconstructing Galapagos Paleohydrology
(2013-11-14)The tropics are centrally important in determining global climate patters as the primary heat and moisture source for atmosphere and ocean circulation. Understanding of the range of natural variability and the sensitivity ... -
Mechanisms of Tropical Pacific Climate Change During the Holocene
A novel set of hydroclimate reconstructions is presented from the eastern equatorial Pacific that spans the last 9100 years. Past changes in total climatological rainfall and rainfall associated with El Niño events were ... -
Quantifying the deep: The importance of diagenetic reactions to marine geochemical cycles
Marine sediments play a fundamental role in long-term element cycles on Earth and host an expansive microbial ecosystem known as the “oceanic deep biosphere”. The biogeochemical and inorganic reactions that occur in the ... -
Tropical paleoclimate reconstructions from stable isotopes of mangrove lipid biomarkers
Tropical oceans play an integral role in global climate dynamics, yet past tropical hydrologic variability is poorly constrained, as many established climate proxies are better suited to higher latitudes. Hydrogen isotope ... -
Tropical South Pacific Paleohydrology from Hydrogen Isotopes in Algal Lipids
The tropics play a central role in global atmospheric moisture transport, however paleoclimate records of tropical precipitation are relatively scarce. Reconstructing pre-instrumental hydrological change requires the use ...