Project Grant 2525340
- This $850,918 Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) supports a collaborative research project to characterize the role of reverse weathering reactions on marine silicon (Si) and lithium (Li) isotope mass balances. The research aims to develop Si and Li isotope ratios as proxies to better understand modern reverse weathering reactions and their impacts on the carbon cycle. Key activities include: Analyzing archived sediment and porewater...
- This Project Grant award, provided by the National Science Foundation's Geosciences Program (CFDA 47.050), will fund collaborative research to characterize the role of reverse weathering reactions on marine silicon (Si) and lithium (Li) isotope mass balances. The total award amount is $275,425 and the project period runs from July 15, 2024 to June 30, 2027. The research will study reverse weathering signatures within major sediment depocenters, such as the Amazon Delta, French Guiana Mobile...
- This $300,785 federal Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) supports a research project to characterize the chemical composition and bioavailability of dissolved organic matter released by marine nitrifying microorganisms. The project aims to determine how this material contributes to carbon cycling in the deep ocean, which may help improve biogeochemical models and inform potential marine carbon dioxide removal activities. The research will...
- The National Science Foundation Division of Ocean Sciences awarded a $681,045 Project Grant to the University of California, Santa Barbara under the Geosciences federal grant program (CFDA 47.050) to evaluate Southern Ocean control of global marine silicon isotope distribution from June 1, 2021 to May 31, 2024. Through this award, UC Santa Barbara will conduct basic research to strengthen understanding of integrated Earth system processes and expand fundamental knowledge of factors influencing...
- The National Science Foundation (NSF) Geosciences Program (CFDA 47.050) awarded a $354,605 project grant to Northeastern University to synthesize the role of shallow benthic fluxes in the coastal carbon cycle along the East Coast of the United States. The project aims to bring together various data sources, from observations to modeling, to evaluate patterns of variation and assess short- and long-term changes in this region. The study will engage the scientific community to develop best...
- The National Science Foundation (NSF) awarded a $480,149 Project Grant under the Geosciences program (CFDA 47.050) to the University of South Florida (USF) for a collaborative research project on the Pacific Ocean iron cycle. The project aims to measure iron isotopes in seawater samples collected during three GEOTRACES expeditions to better understand the sources and biological cycling of iron, a key element that limits ocean productivity. The research team from USF and the University of...
- This $275,001 Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) supports a collaborative research effort to study the seasonal and century-scale climatic and ocean responses to the deglaciation of the Laurentide Ice Sheet and associated freshwater outflows through the Mississippi River system. The research seeks to develop refined reconstructions of past ocean-atmospheric and biogeochemical variability using sediment core data. Key objectives include...
- This $471,604 National Science Foundation project grant will fund research into the origin and expansion of silica biomineralization and its influence on the global silica cycle from 520-440 million years ago. The Regents of the University of Colorado will conduct stable isotope analysis of silicon in the oldest fossils of sponges and radiolarians from western United States geological sites. Researchers will evaluate isotope preservation and build an improved Cambrian-Ordovician silica isotope...
- This $374,395 National Science Foundation project grant through the Geosciences program (CFDA 47.050) will fund research at Rutgers University and Princeton University from December 2022 through November 2024. The grant supports the identification of silicate diagenesis processes controlling pore fluid chemistry in marine sediments and their influence on the geochemical budgets of magnesium, strontium, lithium, and boron through analysis of pore fluid samples from the Mid-Norwegian Margin....
- This $632,314 federal Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) will support a research project led by the University of California San Diego's Scripps Institution of Oceanography. The project aims to provide a better understanding of the physical and biogeochemical processes driving carbon cycling in the equatorial Pacific Ocean. Using a combination of ocean models, autonomous observations, and satellite data, the project will characterize...
This Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) in the amount of $589,519 will fund research to understand the role of reverse weathering processes in marine sediment silicon cycling. The project will use stable and radioactive silicon isotopes to track reverse weathering in the Mississippi River plume, including laboratory and ship-based experiments to study the influence of microbial activity, oxygen levels, and sediment type on these processes. The research aims to provide novel data and insights on silicon cycling in marine sediments, which is important for understanding ocean pH, metal availability, and the long-term carbon cycle. The grant also includes education and outreach activities to train the next generation of scientists at multiple levels, such as providing scholarships for high school students to attend a marine science program and supporting undergraduate research experiences.
Mod # | Description | ReasonForModification | Federal Obligation | Date |
|---|---|---|---|---|
| Not listed | $589.5k | 7/31/25 |