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Earth Impact Effects Program: A Web-based computer program for calculating the regional environmental consequences of a meteoroid impact on Earth
We have developed a Web-based program for quickly estimating the regional environmental consequences of a comet or asteroid impact on Earth (www.lpl.arizona.edu/ impacteffects). This paper detailsExpand
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The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary
The Fall of the Dinosaurs According to the fossil record, the rule of dinosaurs came to an abrupt end ∼65 million years ago, when all nonavian dinosaurs and flying reptiles disappeared. SeveralExpand
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Modeling damage and deformation in impact simulations
Numerical modeling is a powerful tool for investigating the formation of large impact craters but is one that must be validated with observational evidence. Quantitative analysis of damage andExpand
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A strain-based porosity model for use in hydrocode simulations of impacts and implications for transient crater growth in porous targets
Numerical modelling of impact cratering has reached a high degree of sophistication; however, the treatment of porous materials still poses a large problem in hydrocode calculations. We present aExpand
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Peak-ring formation in large impact craters: geophysical constraints from Chicxulub
A seismic reflection and three-dimensional wide-angle tomographic study of the buried, V200-km diameter, Chicxulub impact crater in Mexico reveals the kinematics of central structural uplift andExpand
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Scaling of oblique impacts in frictional targets: Implications for crater size and formation mechanisms
Abstract Almost every meteorite impact occurs at an oblique angle of incidence, yet the effect of impact angle on crater size or formation mechanism is only poorly understood. This is, in large part,Expand
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Constraining the size of the South Pole-Aitken basin impact
Abstract The South Pole-Aitken (SPA) basin is the largest and oldest definitive impact structure on the Moon. To understand how this immense basin formed, we conducted a suite of SPA-scale numericalExpand
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Hydrocode simulations of Chicxulub crater collapse and peak-ring formation
We use hydrocode modeling to investigate dynamic models for the collapse of the Chicxulub impact crater. Our aim is to integrate the results from numerical simulations with kinematic models derivedExpand
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Spherule layers, crater scaling laws, and the population of ancient terrestrial impactors
Abstract Ancient layers of impact spherules provide a record of Earth's early bombardment history. Here, we compare different bombardment histories to the spherule layer record and show that 3.2–3.5Expand
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