Inversion Strategy - Models and Methods of Magnetotellurics - page 471

Table 12.1 Two-dimensional inversion: properties of the TE- and TM-MODES
MODE response

function

near-surface static distortions accuracy of 2D approximation sensitivity

- effect S - effect; conductive

structure

resistive
structure

near-
surface
structure

deep
structure

lithosphere
resistance

conductive
fault

TE-mode
induction
anomalies

Re W absent ! absent ! worse better ! worse better ! worse worse

Im W absent ! absent ! worse better ! worse better ! worse worse

reduced susceptibility ! worse better ! worse better ! worse worse

absent ! absent on low

frequency !

worse better ! worse better ! worse worse

⊥

TM-mode
galvanic

strong strong on low

frequency

better ! worse better ! worse better ! better !

⊥

anomalies absent ! absent on low

frequency !

better ! worse better ! worse better ! better !