Results 101 to 110 of about 56,805 (216)

Modelling Surtseyan Ejecta [PDF]

open access: yes, 2021
<p>Surtseyan ejecta are formed in shallow sub-aqueous volcanic eruptions. They occur when water, containing a slurry of previously erupted material, is washed into the volcanic vent. This slurry is incorporated into the magma and ejected from the volcano inside a ball of magma. These magma bombs containing entrained material are called, Surtseyan
openaire   +2 more sources

Detection of Low‐Altitude Cislunar Dust With the Lunar Occultation Archive

open access: yesGeophysical Research Letters, Volume 52, Issue 8, 28 April 2025.
Abstract It is believed that dust formations above the lunar surface, manifested via sunlight scattering and detected in‐situ, are of too low density to pose threats to lunar missions. However, occasionally prolonged fading/kindling of the immersing/emerging stars near the lunar limb indicates much denser low‐altitude dust clouds.
M. L. Khodachenko, O. V. Arkypov
wiley   +1 more source

Crustal Magnetization Source Depths North of the Caloris Basin, Mercury

open access: yesGeophysical Research Letters, Volume 52, Issue 7, 16 April 2025.
Abstract Magnetic measurements collected by the MESSENGER spacecraft showed that Mercury has a crustal magnetic field in addition to a core magnetic field. Within the region of data availability, this crustal magnetic field is strongest in the vicinity of the Caloris impact basin.
R. Kalski   +3 more
wiley   +1 more source

Ejecta sources and scalings [PDF]

open access: yesAIP Conference Proceedings, 2018
We discuss the processes controlling ejecta particle production and breakup, as a result of shock wave compression of condensed matter and in broader contexts. We present analytic models for the mass-velocity distribution, particle size and total mass saturation of fluid jets from regular surface perturbations.
openaire   +2 more sources

Weak Crust Owing Past Magmatic Intrusions Beneath Campi Flegrei Identified: The Engine for Bradyseismic Movements?

open access: yesAGU Advances, Volume 6, Issue 2, April 2025.
Abstract Calderas often experience extended periods of unrest that are challenging to relate to a magmatic or hydrothermal origin, making it crucial to assemble a clear picture of these dynamics. Since 2005, Campi Flegrei caldera (Italy) has experienced accelerating ground uplift, seismicity rates, and degassing.
Gianmarco Buono   +10 more
wiley   +1 more source

Compositional and Textural Variability Among Tektites From Indochina and South China: Insights Into the Impact Origin of the Australasian Tektite Strewn Field

open access: yesGeochemistry, Geophysics, Geosystems, Volume 26, Issue 4, April 2025.
Abstract The Australasian tektite strewn field, approximately 0.8 Ma in age, covers nearly 10% of the Earth's surface, making it the largest and most recent strewn field globally. This study provides a comprehensive analysis of the elemental composition and texture of tektites recovered from various locations within the strewn field, particularly ...
S. Boschi, S. Goderis, S. Liao, W. Li
wiley   +1 more source

Ejecta velocities in twice-shocked liquid metals under extreme conditions: A hydrodynamic approach

open access: yesMatter and Radiation at Extremes, 2019
We apply a hydrodynamic approach to analyze ejecta emanating from doubly shocked liquid metals. In particular, we are interested in characterizing ejecta velocities in such situations by treating the problem as a limiting case of the ...
V. Karkhanis, P. Ramaprabhu
doaj   +1 more source

Revealing the Moon's Taurus‐Littrow Landslide via Integrated Analysis of Pristine Apollo 17 Soil Core 73001/2

open access: yesJournal of Geophysical Research: Planets, Volume 130, Issue 4, April 2025.
Abstract The “light mantle” deposit at the base of South Massif in the Moon's Taurus‐Littrow Valley was a primary science target for the Apollo 17 exploration. The possibility that it was a landslide triggered by ejecta from Tycho Crater is critical for establishing the age of Tycho and constraining recent lunar impact chronology; however, the ...
Mason Neuman   +40 more
wiley   +1 more source

Ejecta Wakes from Companion Interaction in Type Ia Supernova Remnants

open access: yesThe Astrophysical Journal
Type Ia supernovae are triggered by accretion onto a white dwarf from a companion that is most likely Roche lobe–filling at the time of the explosion.
Logan J. Prust   +2 more
doaj   +1 more source

Estimating the Contribution of Dynamical Ejecta in the Kilonova Associated with GW170817

open access: yesThe Astrophysical Journal Letters, 2017
The source of the gravitational-wave (GW) signal GW170817, very likely a binary neutron star merger, was also observed electromagnetically, providing the first multi-messenger observations of this type.
B. P. Abbott   +1101 more
doaj   +1 more source

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