| 摘要 |
A method and apparatus for analysing an electromagnetic wavefield is provided, the method comprising the steps of measuring the electric and magnetic fields at at least one receiver (30); formulating a respective filter in respect of each of mutually orthogonal components of each of the electric and magnetic fields (33, 34); and applying the filters to the measured data to decompose the wavefield into upgoing and downgoing components (35). The filters may be spatial domain filters, or frequency, slowness, or wavenumber domain decomposition scalars. The analysis technique is applied to seabed data logging. |
