Publications

Modeling barometric pumping of martian methane: Implications for Perseverance sample timing and gas loss from drilled cores

Ortiz, J. P., Lewis, K. W., Wiens, R.C., Stauffer, P. H., Harp, D. R., & Rajaram, H. (2025). Modeling barometric pumping of martian methane: Implications for Perseverance sample timing and gas loss from drilled cores. Icarus . 441, 116702. doi:10.1016/j.icarus.2025.116702.

Permeability scaling relationships of volcanic tuff from core to field scale measurements

Lucero, D. D., Bourret, S. M., Ortiz, J. P., Fritz, B. G., Bodmer, M. A., Heath, J. E., ... & Stauffer, P. H. (2025). Permeability scaling relationships of volcanic tuff from core to field scale measurements. Scientific Reports, 15(1), 12938.

Preferential adsorption of noble gases in zeolitic tuff with variable saturation: A modeling study of counter-intuitive diffusive-adsorptive behavior

Ortiz, J. P., Neil, C. W., Rajaram, H., Boukhalfa, H., & Stauffer, P. H. (2025). Preferential adsorption of noble gases in zeolitic tuff with variable saturation: A modeling study of counter-intuitive diffusive-adsorptive behavior. Journal of Environmental Radioactivity. 282, 107608. doi:10.1016/j.jenvrad.2024.107608.

Sub-diurnal methane variations on Mars driven by barometric pumping and planetary boundary layer evolution

Ortiz, J. P., Rajaram, H., Stauffer, P. H., Lewis, K. W., Wiens, R. C., & Harp, D. R. (2024). Sub-diurnal methane variations on Mars driven by barometric pumping and planetary boundary layer evolution. Journal of Geophysical Research: Planets. 129, e2023JE008043. doi:10.1029/2023JE008043.

Barometric pumping through fractured rock: a mechanism for venting deep methane to Mars’ atmosphere

Ortiz, J. P., Rajaram, H., Stauffer, P. H., Harp, D. R., Wiens, R. C., & Lewis, K. W. (2022). Barometric Pumping Through Fractured Rock: A Mechanism for Venting Deep Methane to Mars' Atmosphere. Geophysical Research Letters, 49(14), doi:10.1029/2022GL098946.

This article was also featured on the cover of this GRL issue.

Gas diffusion through variably-water-saturated zeolitic tuff: Implications for transport following a subsurface nuclear event

Neil, C. W., Boukhalfa, H., Xu, H., Ware, S. D., Ortiz, J., Avendaño, S., Harp, D. R., Broome, S., Hjelm, R. P., Brug, W. P., & Stauffer, P. H. (2022). Gas diffusion through variably-water-saturated zeolitic tuff: Implications for transport following a subsurface nuclear event. Journal of Environmental Radioactivity, 250, 106905.

Continental‐Scale Geographic Trends in Barometric‐Pumping Efficiency Potential: A North American Case Study

Avendaño, S. T., Harp, D. R., Kurwadkar, S., Ortiz, J. P., & Stauffer, P. H. (2021). Continental‐Scale Geographic Trends in Barometric‐Pumping Efficiency Potential: A North American Case Study. Geophysical Research Letters, 48(17), e2021GL093875.

Geologic characterization of nonconformities using outcrop and whole-rock core analogues: hydrologic implications for injection-induced seismicity

Petrie, E. S., Bradbury, K. K., Cuccio, L., Smith, K., Evans, J. P., Ortiz, J. P., Kerner, K., Person, M., & Mozley, P. (2020). Geologic characterization of nonconformities using outcrop and core analogs: hydrologic implications for injection-induced seismicity. Solid Earth, 11(5), 1803-1821.

Beyond Barnwell: Applying lessons learned from the Barnwell site to other historic underground nuclear tests at Pahute Mesa to understand radioactive gas-seepage observations

Bourret, S. M., Kwicklis, E. M., Harp, D. R., Ortiz, J. P., & Stauffer, P. H. (2020). Beyond Barnwell: Applying lessons learned from the Barnwell site to other historic underground nuclear tests at Pahute Mesa to understand radioactive gas-seepage observations. Journal of Environmental Radioactivity, 222, 106297.

The role of fault‐zone architectural elements on pore pressure propagation and induced seismicity

Ortiz, J. P., Person, M. A., Mozley, P. S., Evans, J. P., & Bilek, S. L. (2019). The role of fault‐zone architectural elements on pore pressure propagation and induced seismicity. Groundwater, 57(3), 465-478.

Identification of dominant gas transport frequencies during barometric pumping of fractured rock

Harp, D. R., Ortiz, J. P., & Stauffer, P. H. (2019). Identification of dominant gas transport frequencies during barometric pumping of fractured rock. Scientific Reports, 9(1), 1-9.

Evidence for high rates of gas transport in the deep subsurface

Stauffer, P. H., Rahn, T., Ortiz, J. P., Salazar, L. J., Boukhalfa, H., Behar, H. R., & Snyder, E. E. (2019). Evidence for high rates of gas transport in the deep subsurface. Geophysical Research Letters, 46(7), 3773-3780.

Immobile Pore-Water Storage Enhancement and Retardation of Gas Transport in Fractured Rock

Harp, D. R., Ortiz, J. P., Pandey, S., Karra, S., Anderson, D., Bradley, C., Viswanathan, H., & Stauffer, P. H. (2018). Immobile pore-water storage enhancement and retardation of gas transport in fractured rock. Transport in Porous Media, 124(2), 369-394.

Summary of a Gas Transport Tracer Test in the Deep Cerros Del Rio Basalts, Mesita del Buey, Los Alamos NM,United States

Stauffer, P. H., Rahn, T. A., Ortiz, J. P., Salazar, L. J., Boukhalfa, H., & Snyder, E. E. (2018). Summary of a Gas Transport Tracer Test in the Deep Cerros Del Rio Basalts, Mesita del Buey, Los Alamos NM (No. LA-UR-17-31351). Los Alamos National Lab.(LANL), Los Alamos, NM (United States).

The Role of Fault-Zone Architectural Elements and Basal Altered Zones on Downward Pore Pressure Propagation and Induced Seismicity in the Crystalline Basement

Ortiz, J. P. The Role of Fault-Zone Architectural Elements and Basal Altered Zones on Downward Pore Pressure Propagation and Induced Seismicity in the Crystalline Basement. New Mexico Institute of Mining and Technology.

Exploring the potential linkages between oil-field brine reinjection, crystalline basement permeability, and triggered seismicity for the Dagger Draw Oil field, southeastern New Mexico, USA, using hydrologic modeling

Zhang, Y., Edel, S. S., Pepin, J., Person, M., Broadhead, R., Ortiz, J. P., Bilek, S. L., Mozley, P. S., & Evans, J. P. (2016). Exploring the potential linkages between oil‐field brine reinjection, crystalline basement permeability, and triggered seismicity for the Dagger Draw Oil field, southeastern New Mexico, USA, using hydrologic modeling. Geofluids, 16(5), 971-987.

Quantifying regional sediment flux from observations of nearshore morphology in the Columbia River Littoral Cell

Ortiz, J. P. Quantifying regional sediment flux from observations of nearshore morphology in the Columbia River Littoral Cell. Dartmouth College Senior Honors Thesis Collection.

Investigating the role of complex sandbar morphology on nearshore hydrodynamics

Cohn, N., Ruggiero, P., Ortiz, J. P., & Walstra, D. J. (2014). Investigating the role of complex sandbar morphology on nearshore hydrodynamics. Journal of Coastal Research, (70 (10070)), 53-58.