A5054408644- earthquake and tectonic studies
- Geological and Geochemical Analysis
- Geochemistry and Geologic Mapping
- Geological and Tectonic Studies in Latin America
- Geophysical and Geoelectrical Methods
- Earthquake Detection and Analysis
- Geological and Geophysical Studies
- Scientific Research and Discoveries
- High-pressure geophysics and materials
- Seismic Waves and Analysis
- NMR spectroscopy and applications
- Characterization and Applications of Magnetic Nanoparticles
- Service-Learning and Community Engagement
- Seismology and Earthquake Studies
- Atmospheric and Environmental Gas Dynamics
- Geology and Paleoclimatology Research
- Advanced MRI Techniques and Applications
Cornell University
2020-2023
Horizon Oncology Center
2016
Simon Fraser University
2016
The eruption risk of a volcano depends on how much melt and gas have built up in its magmatic hydrothermal system the upper crust. However, it is still challenging to characterize their spatial distributions quantitatively estimate concentrations. By integrating geophysical imaging results, petrological analysis rock physics models, we mapped migration pathways fluids gases estimated concentrations beneath Uturuncu Bolivia. This last erupted 250,000 years ago, our results explain why shows...
Abstract Mapping fluid accumulation in the crust is pertinent for numerous applications including volcanic hazard assessment, geothermal energy generation, and mineral exploration. Here, we use seismic attenuation tomography to map distribution of fluids below Uturuncu volcano, Bolivia. Seismic P wave S attenuation, as well their ratio ( Q / ), constrain where partially fully fluid‐saturated. anisotropy observations further mechanism by which accumulate, predominantly along aligned faults...
Abstract We present evidence of volcano‐tectonic interactions at Sabancaya volcano that we relate to episodic magma injection and high regional fluid pore pressures. a surface deformation time series including observations from ERS‐1/2, Envisat, Sentinel‐1, COSMO‐SkyMed, TerraSAR‐X spans June 1992 February 2019. These data show deep‐seated inflation northwest 1992–1997 2013–2019, as well creep rupture on multiple faults. Afterslip the Mojopampa fault following 2013 M W 5.9 earthquake is...
Abstract Uturuncu volcano in southern Bolivia last erupted around 250 ka but is exhibiting signs of recent activity, including over 50 yr surface uplift, elevated seismic and fumarolic activity. We studied the spatial temporal scales deformation from 1992 to 2021 better understand subsurface tracked Uturuncu’s using interferometric synthetic aperture radar (InSAR) data global navigation satellite system (GNSS) station UTUR, located near summit. observed a spatially coherent signal uplift...
The recent identification of unrest at multiple volcanoes that have not erupted in over 10 kyr presents an intriguing scientific problem. How can we distinguish between signaling impending eruption after repose and non-magmatic a waning volcanic system? After ca. 250 without known eruption, decades Uturuncu volcano Bolivia has exhibited signs unrest, making the classification this system as “active”, “dormant”, or “extinct” complex question. Previous work identified anomalous low resistivity...
We present evidence of volcano-tectonic interactions at Sabancaya volcano that we relate to episodic magma injection and high regional fluid pore pressures. a surface deformation time series including observations from ERS-1/2, Envisat, Sentinel-1, COSMO-SkyMed, TerraSAR-X spans June 1992 - February 2019. These data show deep seated inflation northwest 1992-1997 2013-2019, as well creep rupture on multiple faults. Afterslip the Mojopampa fault following 2013 Mw 5.9 earthquake is anomalously...
Scientists have been using campaign gravity surveys to monitor volcanic activity at Kilauea's summit for decades, yet we a poor understanding of the ability existing network resolve sources magma accumulation with different mass changes and depths. We also do not fully quantified measure relative importance stations in network. This research tests simple forward modeling approach over range likely source volumes The analysis determines sensitivity three locations, calculates network,...
Earth and Space Science Open Archive This preprint has been submitted to is under consideration at Other. ESSOAr a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v1]Dissecting Zombie: Joint analysis of density resistivity models reveals shallow structure possible sulfide deposition Uturuncu Volcano, BoliviaAuthorsPatriciaMacQueeniDJoachimGottsmanniDMatthew...
Earth and Space Science Open Archive PosterOpen AccessYou are viewing the latest version by default [v1]The IDEEAS Working Group at Cornell University: A New Framework of Collective Leadership for Promoting Justice, Equity, Diversity, Inclusion in GeosciencesAuthorsKellyDevliniDElizabethEidenPaulaBürgiiDPatriciaMacQueeniDCarolynHeadlamKyleBrilliDCarlosCarrilloDouglas SHamiltoniDJunleJiangiDGraceBarcheckiDPeterHitchcockNatalieMahowaldiDSee all authors Kelly DevliniDCorresponding Author•...
Uturuncu volcano in southern Bolivia is a member of distinctive class volcanoes – systems that show unrest despite not having erupted the Holocene. has 250 kyr, but been deforming (uplift with moat subsidence) for several decades, along seismic swarms and active, sulfur-encrusted fumaroles. Our work builds on previous geophysical imaging at by jointly analyzing multidisciplinary datasets, focusing shallow (<15 km depth below surface) structure system geochemical data. Whereas research...
Earth and Space Science Open Archive This preprint has been submitted to is under consideration at Geophysical Research Letters. ESSOAr a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v1]Hydrothermal fluids where find them: Using seismic attenuation anisotropy map beneath Uturuncu volcano, BoliviaAuthorsThomas SamuelHudsoniDJohn-MichaelKendalliDJon...
Uturuncu volcano in southern Bolivia is something of a “zombie” – presumed dead, but showing signs life. The has not erupted 250 kyr, exhibiting unrest the form ground deformation, seismicity, and active fumaroles. Elucidating subsurface structure key for interpreting this recent unrest. Magnetotelluric measurements revealed alternating high low resistivity anomalies at depths <10 km beneath volcano, with low-resistivity anomaly directly Uturuncu. A question is, what nature anomaly? To...