- Page 1 and 2: Electromagnetic Induction in the Ea
- Page 3 and 4: 6.2. Generalized matrix inversion 6
- Page 5 and 6: A1~Lernativel.y p = 30. m, where T
- Page 7: The e1ectrica:L effect - of the cha
- Page 11 and 12: - d IufM12 > 0 . dz - - On the othe
- Page 13 and 14: a) TM-mode From (2.251, (2.26); (2.
- Page 15 and 16: with " the abbreviation + - 1 - ? =
- Page 17 and 18: 2n -i~cr cos (8-$1 -iKrcU J e ~B=J
- Page 19 and 20: In the 1irnl.t a -+ o, I +- m, M =
- Page 21 and 22: -- 2.5. Definition -- of the transf
- Page 23 and 24: we arrive at - v The same appl-ies
- Page 25 and 26: ) Computation of ---- C for a laxez
- Page 27 and 28: The approximate interpretation of C
- Page 29 and 30: I ~ispersi-on relations I Dispersio
- Page 31 and 32: where L is a positively oriented cl
- Page 33 and 34: 1 2 3 4 CPD 1 2 3 4 CPD - g) Depend
- Page 35 and 36: The TE-mode has no vertical electri
- Page 37 and 38: i I Earth Anomalous domain 3.2. Air
- Page 39 and 40: Hence, the conductivity is to be av
- Page 41 and 42: The RHS i.s a closed line integral
- Page 43 and 44: 4. Having determined B;, the coeffi
- Page 45 and 46: 3.4. Anomalous region as basic doma
- Page 47 and 48: - 6 and 6= can be so adjusted that
- Page 49 and 50: From the generalized Green's theore
- Page 51 and 52: and y can again be so adjusted that
- Page 53 and 54: 4.2. In3ral - --- equation method L
- Page 55 and 56: The element GZx is needed for all z
- Page 57 and 58: With this knowledge of the behaviou
- Page 59 and 60:
After having determined Qzr VJ,; @,
- Page 61 and 62:
4.3. The surface inteyral approach
- Page 63 and 64:
F At the vertical boundaries the co
- Page 65 and 66:
The four equations A A A A H = i sg
- Page 68 and 69:
6. Approaches to the inverse proble
- Page 70 and 71:
to minimize the quantity a s = 12 /
- Page 72 and 73:
It remains to show a way to minimiz
- Page 74 and 75:
Agai-n, from a finite erroneous dat
- Page 76 and 77:
Here lJ - is a N x P matrix contain
- Page 78 and 79:
small eigenvalues. The parameter ve
- Page 80 and 81:
Then - 77 - A(E2 - E ) = iwu U (E -
- Page 82 and 83:
whence 2k d -2k d where a = CA:(A;)
- Page 84 and 85:
. 7. Basic concepts of geomagnetic
- Page 86 and 87:
orders of magnitude smaller' than t
- Page 88 and 89:
Elimination of - E or .,. H yields
- Page 90 and 91:
Observing that rot pot rot g = - ro
- Page 92 and 93:
Two special types of such anomalies
- Page 94 and 95:
Model : wo+ Solution for uniform ha
- Page 96 and 97:
parameter u and that the pressure d
- Page 98 and 99:
(=disturbed)-variations: After magn
- Page 100 and 101:
with 4 as geographic latitude. From
- Page 102 and 103:
Very rapid oscillations with freque
- Page 104 and 105:
! 8. Data Collection - and Analysis
- Page 106 and 107:
A horizontal electric -- field comp
- Page 108 and 109:
For a data reducti.on in the fr3equ
- Page 110 and 111:
Let q be the tranfer function betwe
- Page 112 and 113:
. A as transfer function between A
- Page 114 and 115:
-- Structural soundi~z with station
- Page 116 and 117:
Since it follows that - E 1 = - T E
- Page 118 and 119:
- - . the same or from different si
- Page 120 and 121:
The Fourier integral - +- -io t T -
- Page 122 and 123:
The weigh-t . function W is then fo
- Page 124 and 125:
Two convenient filters are 3 sinx I
- Page 126 and 127:
(e.g. X), their realizations by obs
- Page 128 and 129:
Observe that the residual, of which
- Page 130 and 131:
Example: n = 12 and @ = 95%: 1 n =
- Page 132 and 133:
- As a consequence, the real and im
- Page 134 and 135:
This relati-on implies .that .the l
- Page 136 and 137:
9. --- Data 5.nterpretatj.on on the
- Page 138 and 139:
The "modified apparent - - resistiv
- Page 140 and 141:
Exercise Geomagne-tic varj.ations.
- Page 142 and 143:
9.2 Layered Sphere - The sphericity
- Page 144 and 145:
The field within the conducting sph
- Page 146 and 147:
and An algorithm for the direct pro
- Page 148 and 149:
with I - and- a = gn g-n I 1 6-n-1
- Page 150 and 151:
with ~ = - T E + as sheet current d
- Page 152 and 153:
E~~ T r: j = const. or E T + E a r
- Page 154 and 155:
Field equations and boundary condit
- Page 156 and 157:
with N (w,y) being the Fourier tran
- Page 158 and 159:
is calculated as function of freque
- Page 160 and 161:
Both types of anomaly can be explai
- Page 162 and 163:
A field line segment with the horiz
- Page 164 and 165:
- 160 - below can neither enter nor
- Page 166 and 167:
I '. - L.. . . - I . --.> . ~ 4 The
- Page 168 and 169:
This law can be used to i-nterpret
- Page 170 and 171:
Only in this special case will be j
- Page 172 and 173:
anomalous conductivity oat OP the a
- Page 174 and 175:
the product WUL' constant with L de
- Page 176 and 177:
One of the thin plates represents t
- Page 178 and 179:
low conductivity requires the use o
- Page 180 and 181:
Other derivable properties of mantl
- Page 182:
11. References for general reading