Title :
Radio wave emission from 1 MHz to 18 GHz due to rock fracture and the estimation of the emitted energy
Author :
Takano, T. ; Kato, J. ; Hirashima, M. ; Saegusa, K.
Author_Institution :
Dept. of Electron. & Comput. Sci., Nihon Univ., Funabashi, Japan
Abstract :
Radio wave emission due to rock fracture was measured at four frequency bands. Though the antenna gain is difficult to measure at the lowest frequency of 1MHz, the measuring system was successfully calibrated, and the emitted energy was estimated. The obtained results at 1MHz to 18GHz suggest the wave source to be quite narrow electrical signals, and show a possible application to the detection of an earthquake or volcanic activity.
Keywords :
calibration; measurement systems; microwave antennas; microwave measurement; rocks; antenna gain; calibration; earthquake activity detection; electrical signals; emitted energy estimation; frequency 1 MHz to 18 GHz; radiowave emission; rock fracture; volcanic activity detection; Antenna measurements; Calibration; Frequency measurement; Microwave theory and techniques; Receiving antennas; Rocks; Seismic measurements;
Conference_Titel :
Electromagnetics in Advanced Applications (ICEAA), 2012 International Conference on
Conference_Location :
Cape Town
Print_ISBN :
978-1-4673-0333-0
DOI :
10.1109/ICEAA.2012.6328638
