Doubt about poles in response file

[El Berto]

Goodmorning to all users,

as I remember, roots of polynomial can only be:
- purely real (Pn = a+j0)
- pair of complex conjugate, real part and dual Img, specular, part (Pn = a+/-jb)

So I CAN'T find single complex pole in this way :

p1 = a

p2 = b+jc

# Complex poles:
#             i  real          imag          real_error    imag_error
B053F15-18    0 -1.426447E+03  +6.551000E+02  0.000000E+00  0.000000E+00
B053F15-18    1 -1.426447E+03  -6.551000E+02  0.000000E+00  0.000000E+00
B053F15-18    2 -5.009687E+03  +3.100000E+02  0.000000E+00  0.000000E+00

or
p1 = a
p2 = b+jc

p3 = b+jc

# Complex poles:
#             i  real          imag          real_error    imag_error
B053F15-18    0 -1.426447E+03  6.551000E+02  0.000000E+00  0.000000E+00
B053F15-18    1 -1.426447E+03  6.551000E+02  0.000000E+00  0.000000E+00
B053F15-18    2 -5.009687E+03  0.000000E+00  0.000000E+00  0.000000E+00

is this correct?
I ask this because I've found these poles in response file, I supposed wrong response file.....
Thanks.

[Jonathan]

Elberto,

I have instruments with this sort of calibration data and was trying to figure out where it is configured in Earthworm. Where is this information normally put?

Thanks.

Jonathan

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[Stefan Lisowski]

To answer Jonathan's question --

This information is usually appearing in Earthworm in .sac files used by Localmag or GMEW.

I'll let someone more qualified answer Elberto's question.

Stefan

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