Landslides are one of the most pervasive hazards in the world, resulting in more fatalities and economic damage than is generally recognized. They have caused more than 11,500 fatalities in 70 countries from 2007-2010, and in the United States alone $1-2 billion dollars per year in damage from destroyed houses and blocked roads, according to the United States Geological Survey. Saturating the soil on vulnerable slopes, intense and prolonged rainfall is the most frequent landslide trigger. But understanding the land and weather conditions that lead to landslides on larger scales or within developing countries is often difficult because of the lack of ground-based sensors at the landslide site to provide rainfall information.
GCMD keywords can be found on the Internet with the following citation:
Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 22.214.171.124.0