Search Results - "Fagents, Sarah"
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Characteristics of rootless cone tephra emplaced by high-energy lava–water explosions
Published in Bulletin of volcanology (01-08-2020)“…The effects of external water during hydrovolcanic eruptions are difficult to quantify; however, research investigating the explosive interactions between…”
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Formation of the Siberian Yamal gas emission crater via accumulation and explosive release of gas within permafrost
Published in Permafrost and periglacial processes (01-01-2024)“…The Arctic landscape has experienced many dramatic forms of change due to anthropogenic warming. Large crater‐like forms surrounded by fragmented blocks…”
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Photogeologic Map of the Perseverance Rover Field Site in Jezero Crater Constructed by the Mars 2020 Science Team
Published in Space science reviews (01-12-2020)“…The Mars 2020 Perseverance rover landing site is located within Jezero crater, a ∼ 50 km diameter impact crater interpreted to be a Noachian-aged lake basin…”
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Lava-ground ice interactions in Elysium Planitia, Mars: Geomorphological and geospatial analysis of the Tartarus Colles cone groups
Published in Journal of Geophysical Research (01-03-2011)“…The western Tartarus Colles cone groups are located on Mars between northeastern Elysium Planitia and southern Arcadia Planitia (25°N–27°N and 170°E–171°E)…”
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Fragmentation mechanisms associated with explosive lava–water interactions in a lacustrine environment
Published in Bulletin of volcanology (2017)“…Rootless cones form when partially outgassed lava interacts explosively with external water. The explosions represent an end-member system that can elucidate…”
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Rootless tephra stratigraphy and emplacement processes
Published in Bulletin of volcanology (2017)“…Volcanic rootless cones are the products of thermohydraulic explosions involving rapid heat transfer from active lava (fuel) to external sources of water…”
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Total grain size distribution of an intense Hawaiian fountaining event: case study of the 1959 Kīlauea Iki eruption
Published in Bulletin of volcanology (01-07-2019)“…The 1959 eruption of Kīlauea Iki on the Island of Hawai’i is a principal example of powerful Hawaiian fountaining. Over 36 days (including repose periods), 16…”
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Could Life Have Started on Mars? Planetary Conditions That Assemble and Destroy Protocells
Published in Life (Basel, Switzerland) (01-03-2024)“…Early Mars was likely habitable, but could life actually have started there? While cellular life emerged from prebiotic chemistry through a pre-Darwinian…”
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Explosive lava-water interactions in Elysium Planitia, Mars: Geologic and thermodynamic constraints on the formation of the Tartarus Colles cone groups
Published in Journal of Geophysical Research: Planets (01-09-2010)“…Volcanic rootless constructs (VRCs) are the products of explosive lava‐water interactions. VRCs are significant because they imply the presence of active lava…”
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Explosive lava–water interactions I: architecture and emplacement chronology of volcanic rootless cone groups in the 1783–1784 Laki lava flow, Iceland
Published in Bulletin of volcanology (01-05-2010)“…To determine the relationships between rootless cone emplacement mechanisms, morphology, and spatial distribution, we mapped the Hnúta and Hrossatungur groups…”
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Intricate episodic growth of a Hawaiian tephra deposit: case study of the 1959 Kīlauea Iki eruption
Published in Bulletin of volcanology (01-10-2018)“…The 1959 Kīlauea Iki eruption on Hawai’i generated a succession of fountains, most reaching hundreds of meters high. The 16 episodes of fountaining persisted…”
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Constraining explosive volcanism: subjective choices during estimates of eruption magnitude
Published in Bulletin of volcanology (01-02-2014)“…When estimating the magnitude of explosive eruptions from their deposits, individuals make three sets of critical choices with respect to input data: the…”
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Geological, Multispectral, and Meteorological Imaging Results from the Mars 2020 Perseverance Rover in Jezero Crater
Published in Science advances (25-11-2022)“…Perseverance’s Mastcam-Z instrument provides high-resolution stereo and multispectral images with a unique combination of spatial resolution, spatial coverage,…”
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Numerical modeling of lava-regolith heat transfer on the Moon and implications for the preservation of implanted volatiles
Published in Journal of geophysical research. Planets (01-03-2013)“…We have performed a series of numerical simulations of heat transfer between lunar lava flows and the underlying regolith with the goal of determining the…”
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From field data to volumes: constraining uncertainties in pyroclastic eruption parameters
Published in Bulletin of volcanology (01-07-2014)“…In this study, we aim to understand the variability in eruption volume estimates derived from field studies of pyroclastic deposits. We distributed paper maps…”
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Preservation potential of implanted solar wind volatiles in lunar paleoregolith deposits buried by lava flows
Published in Icarus (New York, N.Y. 1962) (01-06-2010)“…The lunar surface is bathed in a variety of impacting particles originating from the solar wind, solar flares, and galactic cosmic rays. These particles can…”
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Toward a model for the bulking and debulking of lahars
Published in Journal of Geophysical Research - Solid Earth (01-10-2006)“…The incorporation and loss of material (sediments or water) during the advance of a lahar can significantly influence the advance rate, mobility, rheology, and…”
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A hybrid model for leveed lava flows: Implications for eruption styles on Mars
Published in Journal of Geophysical Research - Planets (01-07-2009)“…Many channelized lava flows on the plains of Mars have substantial embanking margins and levees inferred to have been stationary while the central channel was…”
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Explosive lava–water interactions II: self-organization processes among volcanic rootless eruption sites in the 1783–1784 Laki lava flow, Iceland
Published in Bulletin of volcanology (01-05-2010)“…We have applied quantitative geospatial analyses to rootless eruption sites in the Hnúta and Hrossatungur groups of the 1783–1784 Laki lava flow to establish…”
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Vesiculation of high fountaining Hawaiian eruptions: episodes 15 and 16 of 1959 Kīlauea Iki
Published in Bulletin of volcanology (01-03-2012)“…The 1959 summit eruption of Kīlauea volcano produced the highest recorded Hawaiian fountain in Hawai‘i. Quantitative analysis of closely spaced samples from…”
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