Download or read book Oceanic Electric Currents Geomagnetic Variations and the Deep Electrical Conductivity Structure of the Ocean continent Transition of Central California written by Jean Henri Filloux and published by . This book was released on 1967 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: The variations of electromagnetic field components along a line across central California have been examined in the frequency range .125 to 4 cph by means of an array of stations extending from 320 km inland to 630 km offshore. The three components of the magnetic variations were recorded at six land positions. Simultaneously, records of the oceanic electric field in a direction approximately parallel to the coast were obtained at three stations located as far as 150 km offshore by using self-contained recorders installed on the sea floor. The cross-correlation of all field components leads to field relationships suggesting a large-scale, nearly two-dimensional structure of the electrical conductivity of the earth's crust and upper mantle in a region adjacent to the California coast. Estimates of the continental and oceanic conductivity distribution with depth were carried out by solving numerical models. The estimate of the offshore conductivity profile based on models of the coastal cross section are in excellent agreement with the independent magnetotelluric sounding. In the light of the present knowledge of the properties of rocks at high pressure and temperature, the high electrical conductivity of the oceanic basement favors a highly basaltic external mantle shell, extending to no less than 30 km below the Mohorovicic discontinuity. (Author).
Download or read book Technical Abstract Bulletin written by Defense Documentation Center (U.S.) and published by . This book was released on 1967 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Survey Bulletin written by and published by . This book was released on 1949 with total page 1084 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1984 with total page 1200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Abstracts of North American Geology written by and published by . This book was released on 1968 with total page 966 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Sea Volume 4A New Concepts of Sea Floor Evolution written by Arthur E. Maxwell and published by Harvard University Press. This book was released on 1971 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oceanography written by Defense Documentation Center (U.S.) and published by . This book was released on 1969 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government wide Index to Federal Research Development Reports written by and published by . This book was released on 1967 with total page 1352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geomagnetic Time Variations on the Sea Floor Off Southern California written by John Phillips Greenhouse and published by . This book was released on 1972 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Data from 12 geomagnetic stations on the sea floor off southern California have been analyzed to infer the structure of electrical conductivity within the oceanic basement. The best fitting conductivity model has a significantly lower conductivity within the basement than that inferred by Cox and others from magnetotelluric measurements. (Author).
Download or read book Electromagnetic Seabed Logging written by Stéphane Sainson and published by Springer. This book was released on 2017-03-30 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seabed logging (SBL) gathers the electromagnetic methods of marine subsoil exploration and more specifically those dedicated to the exploration of oil and gas at sea. Appeared in 2000, these techniques, with more than 500 industrial jobs, present after 15 years of commercial success a discovery record rate of nearly 90 % and seem now to turn the world in the offshore exploration field. Proposing a serious index of the presence of hydrocarbons , electromagnetic SBL coupled with seismic reflection survey is probably the first reliable method for direct detection of hydrocarbons. Complementing the structural concepts of oil exploration used since the 1920s, the SBL now radically modifies the approach and the philosophies of exploration especially those then including drilling and well logging activities. Electromagnetic Seabed Logging: a new tool for oil and gas prospecting, which original publication in French was in 2012, presents these methods, its principles, advantages, limitations, instruments, modeling and applications. It is also designed to be a tool for a reflection on the use of electromagnetic energy for the exploration in a conductive medium as sea water thus setting the theoretical and practical limits of these investigations for future developments. This book is intended of course for the geophysicists and the petroleum geologists, but also for the earth scientists, the reservoir engineers and the log analysts
Download or read book Naval Research Reviews written by and published by . This book was released on 1968 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geomagnetism in Marine Geology written by and published by Elsevier. This book was released on 1972-01-01 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geomagnetism in Marine Geology
Download or read book Journal of Geomagnetism and Geoelectricity written by and published by . This book was released on 1992 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electromagnetic Induction in the Earth and Moon written by U. Schmucker and published by Springer. This book was released on 1980 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Earth and Planetary Sciences written by and published by . This book was released on 1980 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Contribution from the Scripps Institution of Oceanography written by Scripps Institution of Oceanography and published by . This book was released on 1980 with total page 1326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reprints from various publications.
Download or read book Meteorological and Geoastrophysical Abstracts written by and published by . This book was released on 1968 with total page 1544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
