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| Magnetotelluriikka× | Vastaanottimen funktion analyysi× | |
|---|---|---|
| Tieteenala | Geofysiikka | Geofysiikka |
| Menetelmäperhe | Process / pipeline | Process / pipeline |
| Syntyvuosi≠ | 1953 | 1979 |
| Kehittäjä≠ | Louis Cagniard | Charles Langston |
| Tyyppi≠ | Electromagnetic impedance and conductivity imaging | Teleseismic body wave analysis for subsurface imaging |
| Alkuperäislähde≠ | Cagniard, L. (1953). Basic theory of the magnetotelluric method of geophysical prospecting. Geophysics, 18(3), 605-635. DOI ↗ | Langston, C. A. (1979). Structure under Mount Rainier, Washington, inferred from teleseismic body waves. Journal of Geophysical Research, 84(B9), 4749-4762. DOI ↗ |
| Rinnakkaisnimet | MT | RF |
| Liittyvät | 3 | 3 |
| Tiivistelmä≠ | Magnetotellurics (MT) is a passive geophysical method that uses natural variations in Earth's magnetic and electric fields to characterize subsurface electrical conductivity. Developed by Louis Cagniard in 1953, MT measures the impedance relationship between naturally occurring magnetic fluctuations (from solar wind and ionospheric currents) and the resulting electric field, providing information about crustal and upper mantle structures. | Receiver Function (RF) analysis is a seismic method that isolates P-to-S wave conversions at crustal and mantle discontinuities using teleseismic records from distant earthquakes. Introduced by Langston in 1979, RF analysis provides a cost-effective way to determine crustal thickness, Poisson's ratio, and upper mantle structure without requiring active seismic sources, making it a workhorse technique in crustal and lithospheric studies. |
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