Project Grant 2319847

Award Date 1/1/24
Completion Date 12/31/26
Dollars Obligated $271K
Federal Grant Program
47.050
Assistance Type
Project Grant
Place of Performance
Santa Cruz, CA 95064, USA
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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 Planetary Science Institute will conduct collaborative research to study the deformation behavior and rheology of subduction zone rocks. The $169,023 award, made under NSF's Geosciences (CFDA 47.050) program, will address two key questions: 1) how the heterogeneous rheology along subduction megathrusts affects fault slip behavior, and 2) how inelastic deformation on- and off-fault impacts strain...
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This $119,779 Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) will support a collaborative research project to reconcile geophysical observations of slow slip and tremor with geologic and rheological constraints in subduction zones. The primary objectives are to: (1) investigate the types of rocks that potentially hosted slow slip and tremor by analyzing mineral composition, ages, chemistry, and deformation; and (2) compare the rock record to...
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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 examine how inelastic deformation on and off the fault impacts strain energy accumulation and the distribution of locking and slip.

The $270,793 award, effective from January 1, 2024 to December 31, 2026, supports the training of early career scientists, including undergraduate and graduate students, postdocs, and two early career principal investigators. The project will also develop a modeling short course on subduction zone rheology, with the course materials made publicly available as instructional videos to maximize accessibility. This work falls under the NSF's Geosciences program (CFDA 47.050), which aims to expand fundamental knowledge and understanding of the integrated Earth system through basic research in the atmospheric, earth, and ocean sciences.

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