Newswise — Northern Arizona University professor Dr. David S. Brumbaugh is available for comment about the earthquake centered east of Los Angeles on Tuesday, July 29, 2008. Dr. Brumbaugh currently serves as Director of the Arizona Earthquake Information Center. He earned his Ph.D. at Indiana University, and his areas of special interest and expertise are: Mechanics of normal and thrust faulting; earthquake source mechanics; Cenozoic tectonics of the southern Colorado Plateau and transition zone; earthquake studies of the North Anatolian fault zone