SEG Gravity and Magnetics Continuing Education

Advanced Gravity and Magnetics Methods for Exploration

Michal Ruder

Intended for geologists and geophysicists who have a rudimentary understanding of gravity and magnetic principles, this one-day course is a follow-up to Introduction to Gravity and Magnetics for Exploration. It begins with a brief review of basic principles to ensure that all students have a common foundation and moves rapidly into magnetic depth estimation techniques, case histories of applications of gravity and magnetic data to actual exploration problems, discussion of acquisition techniques, and a class exercise that will include both gravity and magnetic modeling of an exploration problem.

Course Outline

*      Review of gravity and magnetic principles
       Anomaly characteristics
       Anomaly superposition
       Lateral composition contrasts
       Comparison/contrast of gravity and magnetic data

*      Magnetic anomaly depth estimation techniques
       Peters' Half Slope
       Vacquier
       Straight-slope
       Werner and Euler deconvolution

*      Case studies of complex gravity and magnetic signatures in exploration c*
       Imaging structure beneath surface volcanics
       Multiple layers of density and susceptibility anomalies: separation of r* anomalies
       Usefulness of filtering in interpretation of gravity and magnetic data

*      Data acquisition
       Types of gravity and magnetic surveys
       Considerations in survey design

Please contact Michal Ruder for class schedules and tuition. meruder@wintermoon.com

MICHAL RUDER received her A.B. in geology and physics cum laude from Bowdoin College and a Ph.D. in geophysics from The Pennsylvania State University. Her career includes industrial, academic, and government research and exploration laboratories, where she analyzed satellite gravity and magnetic data from NASA missions. Dr. Ruder has been involved in both research and applications of image processing techniques and geographic information systems to gravity and magnetic data and satellite multispectral data. She worked for Exxon Production Research Company from 1986-88 as a research geophysicist with emphasis on integration of geophysical techniques. Since 1989, Dr. Ruder is a consultant specializing in gravity and magnetic interpretation and the application of geographic information systems to exploration. Her professional affiliations include SEG, AGU, and the Association for Women Geoscientists.