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Your search keyword '"Gallant, Elisabeth"' showing total 18 results
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18 results on '"Gallant, Elisabeth"'

1. Lava flow magnetic anomaly mapping with UAVs

Author

Malservisi, Rocco, primary, Rodgers, Mel, additional, Van Alphen, Robert, additional, Connor, Charles, additional, Berkey, Troy, additional, Bakowski, Rachel, additional, and Gallant, Elisabeth, additional

Published
2024
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3. Flexible fieldwork

Author

Marshall, Anita M. S., Piatek, Jennifer L., Williams, David A., Gallant, Elisabeth, Thatcher, Sean, Elardo, Stephen, Williams, Amy J., Collins, Trevor, and Arroyo, Yesenia

Published
2022
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4. An actionable anti-racism plan for geoscience organizations

Author

Ali, Hendratta N., Sheffield, Sarah L., Bauer, Jennifer E., Caballero-Gill, Rocío P., Gasparini, Nicole M., Libarkin, Julie, Gonzales, Kalynda K., Willenbring, Jane, Amir-Lin, Erika, Cisneros, Julia, Desai, Dipa, Erwin, Maitri, Gallant, Elisabeth, Gomez, Kiara Jeannelle, Keisling, Benjamin A., Mahon, Robert, Marín-Spiotta, Erika, Welcome, Leiaka, and Schneider, Blair

Published
2021
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6. Modelling eruptive event sources in distributed volcanic fields

Author

Gallant, Elisabeth, Cole, Lawrence, Connor, Charles, Donovan, Amy, Molisee, Danielle, Morin, Julie, Walshe, Rory, Wetmore, Paul, Donovan, Amy [0000-0003-3596-5294], Morin, Julie [0000-0001-9601-4359], Walshe, Rory [0000-0002-2337-8124], and Apollo - University of Cambridge Repository

Subjects
Geophysics, Geochemistry and Petrology, Earth and Planetary Sciences (miscellaneous), 37 Earth Sciences, 3705 Geology, Geology, 3706 Geophysics, 3703 Geochemistry
Abstract

Vent opening hazard models are routinely used as inputs for assessing distal volcanic hazards (lava flows, tephra fallout) in distributed volcanic fields. These vent opening hazard models have traditionally relied on the location of mapped vents; seldom have they taken into account how vents are linked in space and time. We show that inputs needed to appropriately model distal hazards are fundamentally different than thoses required to model near-vent hazards (ground deformation). We provide a computational model to obtain more appropriate eruptive source parameters (ESPs) for distal volcanic hazard sources and show the utility of our code through three examples. The code's strength is that it links events based on the spatio-temporal relationships of vents through heirarchical clustering. The development of the code and its strenghts and weaknesses are discussed. This work challenges previous ideas about ESPs and we hope this work leads to further improvement in hazard assessment methods.

Published
2021

7. Volcanologists - Who are we and where are we going?

Author

Kavanagh, Janine, primary, Annen, Catherine, additional, Burchardt, Steffi, additional, Chalk, Caitlin, additional, Gallant, Elisabeth, additional, Morin, Julie, additional, Scarlett, Jazmin, additional, and Williams, Rebecca, additional

Published
2021
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8. An actionable anti-racism plan for geoscience organizations

Author

Ali, Hendratta N, Ali, Hendratta N, Sheffield, Sarah L, Bauer, Jennifer E, Caballero-Gill, Rocío P., Gasparini, Nicole M., Libarkin, Julie, Gonzales, Kalynda K., Willenbring, Jane, Amir-Lin, Erika, Cisneros, Julia, Desai, Dipa, Erwin, Maitri, Gallant, Elisabeth, Gomez, Kiara Jeannelle, Keisling, Benjamin A., Mahon, Robert, Marín-Spiotta, Erika, Welcome, Leiaka, Schneider, Blair, Ali, Hendratta N, Ali, Hendratta N, Sheffield, Sarah L, Bauer, Jennifer E, Caballero-Gill, Rocío P., Gasparini, Nicole M., Libarkin, Julie, Gonzales, Kalynda K., Willenbring, Jane, Amir-Lin, Erika, Cisneros, Julia, Desai, Dipa, Erwin, Maitri, Gallant, Elisabeth, Gomez, Kiara Jeannelle, Keisling, Benjamin A., Mahon, Robert, Marín-Spiotta, Erika, Welcome, Leiaka, and Schneider, Blair

Abstract

Geoscience organizations shape the discipline. They influence attitudes and expectations, set standards, and provide benefits to their members. Today, racism and discrimination limit the participation of, and promote hostility towards, members of minoritized groups within these critical geoscience spaces. This is particularly harmful for Black, Indigenous, and other people of color in geoscience and is further exacerbated along other axes of marginalization, including disability status and gender identity. Here we present a twenty-point anti-racism plan that organizations can implement to build an inclusive, equitable and accessible geoscience community. Enacting it will combat racism, discrimination, and the harassment of all members.

Published
2021

9. An actionable anti-racism plan for geoscience organizations

Author

Ali, Hendratta N, Ph.D., Ali, Hendratta N, Ph.D., Sheffield, Sarah L, Bauer, Jennifer E, Caballero-Gill, Rocío P., Gasparini, Nicole M., Libarkin, Julie, Gonzales, Kalynda K., Willenbring, Jane, Amir-Lin, Erika, Cisneros, Julia, Desai, Dipa, Erwin, Maitri, Gallant, Elisabeth, Gomez, Kiara Jeannelle, Keisling, Benjamin A., Mahon, Robert, Marín-Spiotta, Erika, Welcome, Leiaka, Schneider, Blair, Ali, Hendratta N, Ph.D., Ali, Hendratta N, Ph.D., Sheffield, Sarah L, Bauer, Jennifer E, Caballero-Gill, Rocío P., Gasparini, Nicole M., Libarkin, Julie, Gonzales, Kalynda K., Willenbring, Jane, Amir-Lin, Erika, Cisneros, Julia, Desai, Dipa, Erwin, Maitri, Gallant, Elisabeth, Gomez, Kiara Jeannelle, Keisling, Benjamin A., Mahon, Robert, Marín-Spiotta, Erika, Welcome, Leiaka, and Schneider, Blair

Abstract

Geoscience organizations shape the discipline. They influence attitudes and expectations, set standards, and provide benefits to their members. Today, racism and discrimination limit the participation of, and promote hostility towards, members of minoritized groups within these critical geoscience spaces. This is particularly harmful for Black, Indigenous, and other people of color in geoscience and is further exacerbated along other axes of marginalization, including disability status and gender identity. Here we present a twenty-point anti-racism plan that organizations can implement to build an inclusive, equitable and accessible geoscience community. Enacting it will combat racism, discrimination, and the harassment of all members.

Published
2021

10. Highs and lows: Using GPR to map cinder cones, lava flows, and lava tubes on Earth to support studies of the Moon and Mars

Author

Kruse, Sarah, primary, Esmaeili, Sanaz, additional, Jazayeri, Sajad, additional, Alfred, Soraya, additional, Bell, Ernie, additional, Connor, Charles, additional, Courtland, Leah, additional, Gallant, Elisabeth, additional, Grady-Weill, Kathleen, additional, Molisee, Danielle, additional, Richardson, Jacob, additional, Varner, Luke, additional, Whelley, Patrick, additional, and Young, Kelsey, additional

Published
2020
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12. Deep and rapid thermo-mechanical erosion by a small-volume lava flow

Author

La Femina, Peter, Richardson, Jacob, Deng, Fanghui, Thompson, Glenn, Zayac, John, Myhre, Douglas, Connor, Charles, Saballos, J., Dixon, Timothy, Guitierrez, Carmen, Charbonnier, Sylvain, Xie, Surui, Gallant, Elisabeth, Connor, Laura, and Malservisi, Rocco

Subjects
bepress|Physical Sciences and Mathematics, bepress|Physical Sciences and Mathematics|Earth Sciences, EarthArXiv|Physical Sciences and Mathematics|Earth Sciences, bepress|Physical Sciences and Mathematics|Earth Sciences|Volcanology, EarthArXiv|Physical Sciences and Mathematics|Earth Sciences|Volcanology, EarthArXiv|Physical Sciences and Mathematics
Abstract

We document remarkably efficient thermo-mechanical erosion by a small-volume lava flow. Downcutting by a basaltic-andesite lava flow on the steep-sided Momotombo volcano, Nicaragua, occurred at 100 times the rate commonly reported for thermal erosion in lava flow fields, even though this flow was small-volume (0.02 km^3) and effused at a low rate for

Published
2019

17. A new geological slip rate estimate for the Calico Fault, eastern California: implications for geodetic versus geologic rate estimates in the Eastern California Shear Zone.

Author

Xie, Surui, Gallant, Elisabeth, Wetmore, Paul H., Figueiredo, Paula M., Owen, Lewis A., Rasmussen, Craig, Malservisi, Rocco, and Dixon, Timothy H.

Subjects
*PALEOSEISMOLOGY, *GEOLOGICAL modeling, *SHEAR zones, *EARTHQUAKE hazard analysis, *ALLUVIAL fans, *ESTIMATES
Abstract

Accurate estimation of fault slip rate is fundamental to seismic hazard assessment. Previous work suggested a discrepancy between short-term geodetic and long-term geologic slip rates in the Mojave Desert section of the Eastern California Shear Zone (ECSZ). Understanding the origin of this discrepancy can improve understanding of earthquake hazard and fault evolution. We measured offsets in alluvial fans along the Calico Fault near Newberry Springs, California, and used several techniques to date the offset landforms and determine a slip rate. Our preferred slip rate estimate is 3.2 ± 0.4 mm/yr, representing an average over the last few hundred thousand years, faster than previous estimates. Seismic hazard associated with this fault may therefore be higher than previously assumed. We discuss possible biases in the various slip rate estimates and discuss possible reasons for the rate discrepancy. We suggest that the ECSZ discrepancy is an artefact of limited data, and represents a combination of faster slip on the Calico Fault, off-fault deformation, unmapped fault strands, and uncertainties in the geologic rates that have been underestimated. Assuming our new rate estimate is correct and a fair amount (40%) of off-fault deformation occurs on major ECSZ faults, the summed geologic rate estimate across the Mojave section of the ECSZ is 10.5 ± 3.1 mm/yr, which is equivalent within uncertainties to the geodetic rate estimate. [ABSTRACT FROM AUTHOR]

Published
2019
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