The National Science Foundation (NSF), through its Geosciences program (CFDA 47.050), awarded a $272,664 project grant to the University of Texas at Austin to conduct collaborative research on subduction megathrust rheology. The research aims to quantify how the deformation behavior and spatial heterogeneity of subduction zone rocks affect fault slip behavior, including the occurrence of slow earthquakes and slip events. The project will involve new laboratory experiments on subduction zone...
This National Science Foundation (NSF) Division of Earth Sciences Project Grant, awarded to the University of California Santa Cruz (UCSC), aims to advance the understanding of subduction fault and earthquake mechanics. Through a combination of new experiments on subduction zone rocks and numerical modeling, the project will investigate how the rheology (deformation behavior) of the megathrust fault zone, and the heterogeneity within it, affect fault slip behavior. Additionally, the project will...
This National Science Foundation Project Grant award of $139,678 supports research into the influence of fault geometry on shallow frictional sliding in subduction zones under the Geosciences program (CFDA 47.050). The awardee, Planetary Science Institute, will conduct complementary theoretical and numerical analyses to determine how fault zone geometry controls the sliding stability of thrust faults and how shallow slip events nucleate and propagate within a subduction zone fault network over...
This $174,000 two-year project grant from the National Science Foundation Division of Earth Sciences aims to advance understanding of episodic tremor and slip in subduction zones. Funded under the Geosciences program (CFDA 47.050), which supports basic research to strengthen knowledge of the integrated Earth system, this award will fund research into the role of metasomatic alteration in subduction zone seismic phenomena from September 2021 through August 2023. The grantee, located in Seattle,...
This $355,607 Project Grant award from the National Science Foundation (NSF) Division of Earth Sciences under the Geosciences program (CFDA 47.050) supports collaborative research to investigate an ancient example of flat-slab subduction in southern California and western Arizona. The goal is to collect data from rocks that were once located above the descending oceanic plate in order to improve simulations and understanding of similar modern tectonic settings, many of which pose significant...
This $393,670 National Science Foundation award under the Geosciences program (CFDA 47.050) funds research at the University of California, Davis from March 2022 through February 2025 to test the role of metastable olivine in subduction dynamics and deep earthquakes. The researchers will use state-of-the-art numerical simulations integrating experimental and observational parameters to model various subduction scenarios with and without the presence of metastable olivine. They will compare model...
This five-year, $277,481 project grant from the National Science Foundation's Geosciences program (CFDA 47.050) supports collaborative research towards developing a new framework for interpreting mantle deformation. The grantee, Columbia University, will integrate theory, experiments, and observations spanning seismic to convective timescales. Researchers will characterize frequency-dependent upper-mantle dissipation in three locations using seismic and geodetic observations. Laboratory...
This National Science Foundation Project Grant of $290,439 supports research at Brown University from November 1, 2022 to August 31, 2027 under the Geosciences program (CFDA 47.050). The award will fund collaborative research integrating observational, experimental, and modeling efforts to characterize the full-spectrum rheological response of Earth's mantle and illuminate underlying microphysical processes controlling viscoelasticity. Observational work will characterize frequency-dependent...
This $518,605 National Science Foundation project grant under the Geosciences program (CFDA 47.050) will fund collaborative research to quantify strain and fluid flow along subduction interfaces. Penn State University will lead efforts to characterize chemical and mechanical processes controlling the healing of subduction zones between large earthquakes. Researchers will study ancient subduction exposures in Japan and Alaska spanning depths of 8-20 km and temperatures of 150-350°C. Electron...
The National Science Foundation (NSF) awarded a Project Grant under the Geosciences program (CFDA 47.050) to the University of Washington (UW) for $119,779 to conduct collaborative research on reconciling geophysical observations of slow slip and tremor with geologic and rheological constraints in subduction zones. This research project aims to investigate the types of rocks that potentially hosted slow slip and tremor (SST) events and compare the rock record to geophysical imaging of modern...