Rd
Member Since 2016
Rebecca deGraffenried
Assistant Professor, University of Missouri
AGU Research
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Integrated Views of Magma Ascent and Decompression from Coordinated Approaches: A Case Study from Mount St. Helens, WA
UNDER PRESSURE: MEASUREMENT AND INTERPRETATION OF PRESSURE-DEPENDENT PARAMETERS AND DECOMPRESSION RATES IN MAGMAS II POSTER
volcanology, geochemistry and petrology | 12 december 2023
Rebecca deGraffenried, Christy B. Till, Heather M....
The crustal ascent and decompression history of magmas impacts eruptive behavior, but these histories can be complex to reconstruct. However, with the...
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Pre‐Eruptive Outgassing and Pressurization, and Post‐Fragmentation Bubble Nucleation, Recorded by Vesicles in Breadcrust Bombs From Vulcanian Activity at Guagua Pichincha Volcano, Ecuador
JOURNAL OF GEOPHYSICAL RESEARCH: SOLID EARTH
08 september 2023
Mathieu Colombier, Michael Manga, Heather M. Wrigh...
Breadcrust bombs formed during Vulcanian eruptions are assumed to originate from the shallow plug or dome. Their rim to core texture reflects the c...
Crystallographic orientation of crystal clusters in 3D using laboratory diffraction contrast tomography: initial tests on Kīlauea olivine
CHEMISTRY, MECHANICS, GEOPHYSICS, AND TIMESCALES OF MAGMATIC PROCESSES I ORAL
volcanology, geochemistry and petrology | 13 december 2021
Thomas Shea, Jordan Lubbers, Adrien Mourey, Masako...
X-ray Computed Tomography (XRCT) is increasingly used in the geosciences to image the texture and mineral make-up of igneous rocks in three dimensions...
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Using Volatile Element Concentration Profiles in Crystal‐Hosted Melt Embayments to Estimate Magma Decompression Rate: Assumptions and Inherited Errors
GEOCHEMISTRY, GEOPHYSICS, GEOSYSTEMS
11 may 2021
Rebecca deGraffenried, Thomas Shea
Magma decompression rate has profound impacts on volcanic eruption style as it determines the time available for most kinetic processes (e.g., vola...
Modeling diffusion in 1D within melt embayments: correcting for 3D geometry
STUDENT ENGAGEMENT TO ENHANCE DEVELOPMENT: OUTSTANDING STUDENT PRESENTATION AWARD WINNERS FROM FALL MEETING 2019 IV ELIGHTNING
union | 08 december 2020
Rebecca deGraffenried, Thomas Shea
The rate at which magma decompresses as it travels from depth to the Earth’s surface exerts a first-order control on how explosively a volcano erupts....
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Vesicularity, crystallinity, and implications for rheology of the Kīlauea 2018 Lava Flows
MULTIDISCIPLINARY INVESTIGATIONS OF THE 2018 KĪLAUEA ERUPTION II POSTERS
volcanology, geochemistry and petrology | 07 december 2020
Brenna A. Halverson, Alan G. Whittington, Julia E....
The 2018 Kīlauea lava flows were among the best documented in history, with extensive ground-based observation and Uncrewed Aerial Systems (UAS) overf...
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Experimental examination of the melt embayment method for determining magma decompression rate
SOME LIKE IT VISCOUS: UNDERSTANDING SILICIC MELT PRODUCTION AND STORAGE AND ITS ULTIMATE FATE II POSTERS
volcanology, geochemistry and petrology | 07 december 2020
Rebecca deGraffenried, Nicolas Cluzel, Thomas Shea...
The rate at which magma decompresses in transit to the Earth’s surface has a first-order control on eruption style as it dictates the time available f...
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Storage conditions and longevity of rift zone magmas at Kīlauea Volcano, Hawai‘i: melt inclusion insights from the 2018 Lower East Rift Zone eruption
CALDERA-RIFT SYSTEMS AND NEW INSIGHTS INTO BASALTIC VOLCANO DYNAMICS II POSTERS
volcanology, geochemistry and petrology | 12 december 2019
Thomas Shea, Allan H. Lerner, Natalie Powers, Lowe...
Rift zones radiating from the summit of shield volcanoes collect and distribute part of the magma supplied towards the surface. They are responsible f...
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