Drop a Rock on Your Nearest Landmark!

Earth Impact Effects Program
Robert Marcus, H. Jay Melosh, and Gareth Collins

www.lpl.arizona.edu/impacteffects

Welcome to the Earth Impact Effects Program: an easy-to-use, interactive web site for estimating the regional environmental consequences of an impact on Earth. This program will estimate the ejecta distribution, ground shaking, atmospheric blast wave, and thermal effects of an impact as well as the size of the crater produced.