Institute of Theoretical Geophysics, University of Cambridge - Group spanning Earth Sciences and Applied Mathematics, whose research involves quantitative descriptions of processes fundamental to the Earth. Current members, details of research, and list of seminars.
International Association for Mathematical Geology - Promotes international cooperation in the application and use of mathematics in geological research and technology. Meetings, membership directory, job listings, other links.
Laurent Duval - Signal and image processing. Conference Time-Table on signal processing, image analysis, video coding and related applications (in geophysics, biomedical imaging).
Seismic Un*x - A seismic processing and research environment developed at the Center for Wave Phenomena, Colorado School of Mines. Requires ANSI C and Unix. Free download.