New possibilities in controlled-source seismology with a magnetic levitation vibrator |
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| Authors: | R Unger WA van Kampen AJ Berkhout RG Boiten AM Ziolkowski AR Ritsema DPh Schmidt |
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| Institution: | Delft University of Technology, Postbus 5046, 2600 Delft, The Netherlands;Royal Netherlands Meteorological Institute, Poslbus 201, 3730 AE De Bill, The Netherlands;TNO Institute of Applied Physics, Postbus 155, 2600 AD, The Netherlands |
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| Abstract: | Summary. A new-technology, broad-band seismic land source based on the principle of magnetic levitation is under development. The new source is designed to overcome limitations experienced with controlled-signal seismic sources at the present time, and to create new possibilities. In particular, She new source extends the constant peak force frequency band down to 2 Hz, and is capable of at least several weeks continuous, coherent transmission. It will enable three-dimensional long-range (>200 km) controlled-signal seismology with the potential for active earth tomography down into the mantle and systematic earthquake precursor measurement, and should improve shallow and deep seismic profiling technology. The optimum transmission frequencies depend on Q, transmission range, and noise spectrum. |
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