Active geophysical monitoring is an important new method for studying time-evolving structures and states in the tectonically active Earth's lithosphere. It is based on repeated time-lapse observations and interpretation of rock-induced changes in geophysical fields periodically excited by controlled sources. In this book, the results of strategic systematic development and the application of new technologies for active geophysical monitoring are presented. The authors demonstrate that active monitoring may drastically change solid Earth geophysics, through the acquisition of substantially new information, based on high accuracy and real-time observations. Active monitoring also provides new means for disaster mitigation, in conjunction with substantial international and interdisciplinary cooperation.
Dr. Kasahara is a professor of emeritus of the University of Tokyo, a visiting Professor at both Shizuoka University in the department of earth sciences and at Tokyo University of Marine Science and Technology. He is a technical advisor for Kawasaki Geological Engineering Co. Ltd., and JGI, Inc. Dr. Kasahara has written four previous books in the geosciences. His education includes Dr. Sci. (Geophysics), Nagoya University, 1970, M.S. (Geophysics), Nagoya University, 1967, B.S. (Earth Sciences), Nagoya University 1965 Michael S. Zhdanov is Professor of Geophysics in the Department of Geology and Geophysics at the University of Utah in Salt Lake City. Dr. Zhdanov is also Director of the Center of Electromagnetic Research at the same university. He has more than 30 years of experience in research and instruction in geophysical electromagnetic theory and he has authored more than 100 papers on the subject.