Jan 1, 2011 · The ejecta model, along with the constants given in Table 3, can be used to calculate the ejecta velocity distribution for a given impact event. From those follow a number of important features, including range of ejecta, regolith on small bodies, momentum magnification for asteroid deflection considerations, and so on.

The mass of ejecta thrown out during explosive eruptions spans at least 10 orders of magnitude (Figure 13.1). The smallest explosive eruptions are rarely documented, and their deposits are rarely anything other than ephemeral. Discrete ash-venting episodes during an eruption, such as those at the Soufrière Hills volcano, Montserrat, between 1995 and 1998, or discrete …

Mar 1, 2022 · Ejecta scaling relationships are useful to determine the ejecta mass–velocity distribution and momentum transfer for vertical impacts scenarios other than the ones considered here.

Mar 1, 2019 · The characteristics of ejecta are the crucial element in the concept of kinetic impact deflection of asteroids. The mass and velocity distribution of …

May 1, 2024 · Plume-surface interactions (PSI) occur during the take-off and landing of interplanetary vehicles, leading to particle ejection and the formation of c…

Sep 1, 2024 · Impact cratering is an important geological process on Earth. This review summarizes the state of knowledge of the Precambrian (Hadean, Archean, and P…

May 1, 2014 · Of the fluidized ejecta craters, double-layered ejecta (DLE) craters, believed to form in a decameters-thick surface ice layer, appear to have anomalously large and highly variable ejecta mobility (EM) ratios.

Feb 5, 2025 · Understanding the factors that can influence the thermodynamic state can provide insights in the evolution of the structure of the ejecta. This study uses large-scale molecular dynamics (MD) simulations to examine the role of shock pressures on local temperature generated at the groove vertex at the onset of ejecta formation.

Hypervelocity impact experiments of rock projectiles and steel targets were conducted at velocities ranging from approximately 3 km/s to 7 km/s. Eject…

Oct 1, 2018 · The preponderance of impact craters and the associated crater ejecta facies are leading agents of geomorphic change across the Solar System. Interpretation of planetary landscape evolution, sample provenance, and regolith gardening all benefit from a thorough understanding of ejecta emplacement dynamics.