Geophysics

Natural Resources Canada: Geomagnetism Natural Resources Canada: Geomagnetism- Contains data on the ever-changing magnetic field. Includes a declination calculator and a database from Canadian magnetic observatories. Seminar in Geophysics: Thermal and Chemical Evolution of the Earth Seminar in Geophysics: Thermal and Chemical Evolution of the Earth- Course materials are available for download from MIT, this program studies the historical development and the c… Geophysics Forum Geophysics Forum- Online forum for geophysics issues related to environment, engineering, archaeology, hydrology, forensic and other near surface geophysical applications. Origin of the Terrestrial Magnetic Field Origin of the Terrestrial Magnetic Field- Article by Andrija Radovic on how the Earth's geomagnetic field arises. The Upper Mantle of the Earth The Upper Mantle of the Earth- Information about the highly viscous layer between the Earth's crust and the lower mantle, including its internal structure, its material compositio… Genetic Algorithms in Joint Inversion Genetic Algorithms in Joint Inversion- Research discussing some of the advantages and disadvantages of using genetic algorithms for joint inversion of different geophysical datase… USGS Office of Ground Water, Branch of Geophysics USGS Office of Ground Water, Branch of Geophysics- Technical support, guidance, and applied research that fosters the appropriate use of surface and borehole geophysical methods f… EPA Dynamic Field Activities - Geophysical Methods EPA Dynamic Field Activities - Geophysical Methods- Common geophysical methods used by the Environmental Protection Agency at hazardous waste sites include: ground penetrating rad… MTNet MTNet- An international electronic forum for the free exchange of knowledge, programs and data between scientists engaged in the study of the Earth using electromagnetic methods, … Airborne Geophysical Survey Workshop Airborne Geophysical Survey Workshop- A collection of papers covering the practical aspects of performing airborne magnetic, radiometric, and electromagnetic surveys. ORAD Laboratory for Satellite Altimetry ORAD Laboratory for Satellite Altimetry- Specializes in the analysis of satellite altimeter data related to problems in physical oceanography and marine geophysics. Magnetotellurics MT: Technique, Interpretation, and Application Magnetotellurics MT: Technique, Interpretation, and Application- A detailed article explaining the practical application of magnetotellurics. Includes case studies to present proc… Magnetotellurics Basics Magnetotellurics Basics- Magnetotellurics (MT) is a geophysical method to study the distribution of electrical conductivity in the earth. Article includes examples of recordings a… Introduction to Magnetotellurics Introduction to Magnetotellurics- A geophysical technique that uses naturally-occurring (or man-made) electromagnetic fields to probe the electrical conductivity structure of the … Multicomponent Seismic: A Pragmatist's Primer Multicomponent Seismic: A Pragmatist's Primer- Article discussing the different types of multicomponent seismic data, including geophone orientation, recording methods and success… Sharp Deconvolution Sharp Deconvolution- A novel approach to the comprehensive elimination of multiples, which combines both waveform inversion (SDec) and statistical estimation (MSvE). USGS Geomagnetism Homepage USGS Geomagnetism Homepage- Provides background information on the earth's magnetism, geomagnetic field maps and data, and modelling information. Michael Studinger's Homepage Michael Studinger's Homepage- Geophysical and glaciological research on the Antarctic continent with aerogeophysical methods. GNS Science GNS Science- Research institute in New Zealand specializing in earth systems, seismic data acquisition and processing, laboratory analysis, environmental and natural hazards risk … The Great Magnet, the Earth The Great Magnet, the Earth- Historical review of geomagnetism, from the discovery of the compass to plate tectonics and space observations. Also has instructions for teachers, gl… The Exploration of the Earth's Magnetosphere The Exploration of the Earth's Magnetosphere- A detailed non-mathematical introduction to the research on the Earth's magnetic environment in space and its history. Contains maste…