This Project Grant award of $314,998 from the National Science Foundation's Geosciences Program (CFDA 47.050) will fund a study on nitrogen recycling across the Mariana subduction zone. The research, conducted by the Woods Hole Oceanographic Institution, aims to investigate the flux of nitrogen between the Earth's surface and deep interior driven by plate tectonics. The project will analyze rock samples from the forearc, arc, and backarc regions of the Mariana subduction zone to quantify the...
This $193,980 Project Grant, awarded by the National Science Foundation (NSF) under the Geosciences program (CFDA 47.050), supports a research project to evaluate the continental crust as a reservoir for Earth's nitrogen and constrain the nitrogen abundance of primitive arc magmas. The project will analyze nitrogen levels in continental crust samples from California and Arizona to determine how much nitrogen is stored in the crust and how it is exchanged with the Earth's interior at subduction...
This $387,090 Project Grant, awarded by the National Science Foundation's Geosciences Program (CFDA 47.050), will support a collaborative research effort to enhance understanding of nitrogen cycling in deep-sea hydrothermal vent ecosystems. The project will employ specialized high-pressure equipment to conduct experiments measuring rates of nitrogen loss, recycling, and microbial assimilation across redox gradients at two distinct seafloor vent habitats. This work aims to address limitations...
This $167,576 National Science Foundation project grant under the Geosciences program (CFDA 47.050) funds research into constraining nitrogen sources and recycling efficiency in subduction zones. The Williamstown, MA-based awardee, President and Trustees of Williams College, will conduct research at the Woods Hole Oceanographic Institution to quantify nitrogen outputs from Central American and Chilean volcanoes and identify nitrogen sources in arc magmas. Using fluid inclusions in mineral...
This National Science Foundation (NSF) Geosciences Program (CFDA 47.050) project grant awarded to Lehigh University provides $141,748 to investigate nitrogen cycling in deep-sea hydrothermal vent ecosystems. The 3-year project, beginning September 1, 2024, will employ specialized high-pressure equipment to measure rates of nitrogen loss, recycling, and microbial assimilation across redox gradients at seafloor vent habitats. This research aims to enhance understanding of how these extreme...
The National Science Foundation awarded a $209,385 Project Grant to the Woods Hole Oceanographic Institution from November 1, 2021 to April 30, 2023 under the Geosciences program (CFDA 47.050). The grant will support research to constrain nitrogen sources and recycling efficiency in hot subduction zones using fluid inclusions in mineral separates from mafic lavas. The Geosciences program seeks to strengthen the national scientific enterprise through expanded fundamental knowledge and...
This National Science Foundation project grant of $328,355 will fund research into nitrogen isotope dynamics on the Amundsen Sea continental margin in Antarctica under the Geosciences program (CFDA 47.050). Trustees of Boston College, doing business as Boston College, will collect full water column profiles of nitrogen and oxygen isotope ratios in nitrate along with isotope ratios of total dissolved nitrogen at select stations during the U.S. GEOTRACES GP17-ANT expedition. Suspended particle...
This National Science Foundation (NSF) Geosciences program (CFDA 47.050) Project Grant award to Brown University for $225,899 supports a collaborative research study examining the timing and mechanisms of mantle exhumation and seafloor spreading at the Iberia-Newfoundland continental margins. The research will use zircon and apatite thermochronology to track the cooling history of the exhumed mantle and evaluate competing models for the transition from continental breakup to seafloor...
This National Science Foundation (NSF) Geosciences Program (CFDA 47.050) Project Grant award of $296,096 to Brown University provides funding to investigate the crust and uppermost mantle beneath active volcanoes using new seismic analysis techniques. The 2-year project, starting on Sep 1, 2024, aims to advance understanding of how magma storage and migration affect the eruptibility of volcanoes in regions like Yellowstone, the Cascades Arc, and the Altiplano-Puna Volcanic Complex. Key...
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...
This $195,997 Project Grant awarded by the National Science Foundation's Geosciences program (CFDA 47.050) to Brown University will support collaborative research on understanding nitrogen cycling in subduction zones. The project aims to provide new constraints on the distribution and behavior of nitrogen as it is subducted into the Earth's mantle and then potentially returned to the surface through volcanic activity. Key planned activities include measuring nitrogen composition in subduction zone rock samples, and conducting laboratory experiments to assess nitrogen stability and partitioning at mantle pressures and temperatures. The research findings will help quantify the amount of nitrogen sequestered in the deep Earth versus released to the atmosphere, with implications for Earth's long-term nitrogen budget and potential climate impacts. The project team includes early career female researchers, graduate students, and undergraduates from the University of Arizona and University of Southern California, with plans for collaborative educational activities. No sub-awards are planned under this grant.