Member Since 1986
Greg Hirth
Professor, Brown University
AGU Research
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A global and interdisciplinary perspective on variations and dynamics of the lithosphere-asthenosphere boundary
LITHOSPHERE-ASTHENOSPHERE SYSTEM: MODELS AND OBSERVATIONS II ORAL
study of earth's deep interior | 13 december 2024
Catherine Rychert, Yuhang Dai, Sinan Özaydin, Eric...
The transition from a rigid lithospheric plate to a weaker asthenosphere is a fundamental aspect of plate tectonic theory. A debate continues regardin...
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Exploring the Impact of Subducting Sediment Properties, Shear Heating, and Fluid Pressure on Seismic Activity in Subduction Zones Using MEFISTO
SUBDUCTION TOP TO BOTTOM: CONVERGENT MARGIN PROCESSES TRENCH TO ARC (ALEUTIANS/ALASKA AND BEYOND) III POSTER
tectonophysics | 13 december 2024
Chia Hsun Lin, Jiaqi Fang, Wei Mao, Emma Armstrong...
Seismic activity in subduction zones poses substantial hazards to densely populated cities located in these areas, necessitating a better understandin...
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Characterizing quartz rheology through load-stepping experiments, from diffusion to dislocation creep
PHYSICAL PROPERTIES OF EARTH MATERIALS (PPEM): DEFORMATION, FLOW, AND FAILURE V POSTER
mineral and rock physics | 12 december 2024
Leif Tokle, Greg Hirth, Whitney M. Behr
Due to the abundance of quartz in the continental crust, quartz rheology is fundamental to our understanding of many geodynamic processes. Quartz rheo...
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Repacking in Compacting Mushes at Intermediate Melt Fractions: Constraints from Numerical Modeling and Phase Separation Experiments on Granular Media
TIMING AND DURATION OF MAGMATIC PROCESSES FROM MELT GENERATION TO ERUPTION II ORAL
volcanology, geochemistry and petrology | 12 december 2024
Darien Florez, Christian Huber, Susana Hoyos, Mate...
The mechanism by which crystal-melt mixtures separate is melt fraction sensitive and controls the physical and chemical evolution of crystal-melt aggr...
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The Co-Evolution of a Planet’s Water Budget and its Tectonic Regime
INTERDISCIPLINARY PERSPECTIVES ON MANTLE FORMATION, STRUCTURE, AND DYNAMICS IN THE EARTH AND OTHER PLANETARY BODIES I POSTER
study of earth's deep interior | 12 december 2024
Manar Al Asad, Harriet C. Lau, Greg Hirth
The viscosity structure of the mantle plays an important in a planets tectonic regime. In particular, Al Asad & Lau (2024)[1] found that asthenosp...
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Exploring the role of macroscopic roughness on fault stability using rotary shear experiments on diabase and talc
CRUSTAL DEFORMATION AND HETEROGENEITY FROM LABORATORY EXPERIMENTS TO LARGE EARTHQUAKE CYCLES II ORAL
mineral and rock physics | 12 december 2024
Monica R. Barbery, Greg Hirth, Terry E. Tullis
Fault roughness is well documented over a wide range of observational length scales, but the role of roughness on frictional behavior of geologic mate...
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Determining the rheological properties of natural, intermediate-composition plagioclase
PHYSICAL PROPERTIES OF EARTH MATERIALS (PPEM): DEFORMATION, FLOW, AND FAILURE V POSTER
mineral and rock physics | 12 december 2024
Subhajit Ghosh, Andrew J. Cross, Greg Hirth, Camer...
The strength of the oceanic lower crust has long been a topic of debate in the scientific community as it plays a critical role in governing the evolu...
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Time-series CO2 Flux Data Reveal Shallow Healing of the 2023 MW 7.6 Elbistan, Turkey, Earthquake Rupture
SHALLOW FAULT ZONE DEFORMATION OVER THE EARTHQUAKE CYCLE: OBSERVATIONS, EXPERIMENTS, AND MODELS III ORAL
tectonophysics | 12 december 2024
Alexis K. Ault, Dennis L. Newell, Musa BALKAYA, Si...
Earthquakes nucleate at depth, but it is the upper ~1 km of a fault where seismic waves, rocks, sediments, fluids, humans, and the built environment i...
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