Filtrering og LCI inversion Esben Auken HydroGeophysics Group Department of Earth Sciences,...

Transcript of Filtrering og LCI inversion Esben Auken HydroGeophysics Group Department of Earth Sciences,...

Filtrering og LCI inversion

Esben Auken

HydroGeophysics GroupDepartment of Earth Sciences, University of Aarhus, Denmarkwww.hgg.au.dk

Filtering of couplings from raw data

Averaging core set up

Filtering of noise filled data from averaged data

Processeringsindstillinger GPS data

Angle data

Altitude data

Voltage data

Filtrering af data – lavmoment z-data Flyvehøjde er 25 – 35 m

Stærk korelation imellem flyverhøjde og signalniveau

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Lo

g -

No

Un

it

1e+00

1e+01

1e+02

1e+03

1e+04

1e+05

Altitu

de

[m]

100.0

95.0

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20.0

Time

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Lo

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Altitu

de

[m]

100.0

95.0

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65.0

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20.0Altitude of Tx coil

Raw Voltage Data

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Lo

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Un

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1e+00

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Altitu

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3 min 2 line kmAverage center pointAverage center point

Time [s]1e-05 1e-04 1e-03 1e-02

Rh

oa

[O

hm

m]

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100.0

1000.0 Average sounding, Rho-a

Raw voltage data

Time [s]1e-05 1e-04 1e-03 1e-02

Rh

oa

[O

hm

m]

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100.0

Altitude

Raw Voltage data

Gamle data

Time

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Lo

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1e+00

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Altitu

de

[m]

100.0

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60.0

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3 min 2 line kmAverage center pointAverage center point

Raw voltage data

Altitude

Averaged Voltage data

Nye data – lige filtre

Average center point

Time

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Lo

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Altitu

de

[m]

100.0

95.0

90.0

85.0

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75.0

70.0

65.0

60.0

55.0

50.0

45.0

40.0

35.0

30.0

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20.0

Time

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Lo

g -

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Un

it

1e+00

1e+01

1e+02

1e+03

1e+04

1e+05

Altitu

de

[m]

100.0

95.0

90.0

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80.0

75.0

70.0

65.0

60.0

55.0

50.0

45.0

40.0

35.0

30.0

25.0

20.0

3 min 2 line kmAverage center point

Time [s]1e-05 1e-04 1e-03 1e-02

Rh

oa

[O

hm

m]

10.0

100.0

Raw voltage Data

Time [s]1e-05 1e-04 1e-03 1e-02

Rh

oa

[O

hm

m]

10.0

100.0

Altitude

Averaged voltage Data

Nye data – skrå filtre

Inversion Methodology LCI – soundings

Profil

TE M soundings - m odels

Add constraints – a variance between the model parameters

Profil

TEM soundings - models

Few layer parameterization – all parameters floating

Profil

r1n r1

n+1

r2n r2

n+1

r3n r3

n+1

d1n d1

n+1

d2n d2

n+1

Smooth model parameterization – fixed layer boundaries

Profil

r1n r1

n+1

r2n r2

n+1

rm

n rm

n+1

Filtrering og LCI inversion Esben Auken HydroGeophysics Group Department of Earth Sciences,...

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Transcript of Filtrering og LCI inversion Esben Auken HydroGeophysics Group Department of Earth Sciences,...

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