AIRBORNE MAGNETIC PROFILE ABOVE 40TH PARALLEL, EASTERN COLORADO TO WESTERN INDIANA

Geophysics ◽  
1949 ◽  
Vol 14 (1) ◽  
pp. 57-57 ◽  
Author(s):  
Homer Jensen
Keyword(s):  
Return Trip ◽  
Magnetic Profile ◽  
Airborne Magnetic

On the return trip from the Geophysical Meetings in Denver in the spring of 1948, the Gulf magnetometer in the Aero Service Corporation DC‐3 magnetometer survey plane was operated continuously from a point near Adena, Colorado, to the vicinity of Indianapolis, Indiana, as part of a program of running long lines in the course of routine transfer of survey airplanes.

Anticipated ambiguity prolongs the present: Evidence of a return trip effect.

2016 ◽  
Vol 145 (11) ◽  
pp. 1415-1419 ◽  
Author(s):  
Sam J. Maglio ◽  
Cherrie Y. N. Kwok
Keyword(s):  
Trip Effect ◽  
Present Evidence ◽  
Return Trip

Airborne magnetic and radiometric mapping for litho-structural settings and its significance for bitumen mineralization over Agbabu bitumen-belt southwestern Nigeria

2021 ◽  
pp. 104222
Author(s):  
Ajibola Richard Faruwa ◽  
Wei Qian ◽  
Oladotun Seyi Obafunmilayo ◽  
Babatunde Bunmi Daramola ◽  
Mosaad Ali ◽  
...  
Keyword(s):  
Southwestern Nigeria ◽  
Airborne Magnetic

scholarly journals Application of the Wiener filter to magnetic profiling in the volcanic environment of Mt. Etna (Italy)

1996 ◽  
Vol 39 (1) ◽  
Author(s):  
C. Del Negro
Keyword(s):  
Synthetic Data ◽  
Wiener Filter ◽  
Magnetic Anomalies ◽  
Fault System ◽  
Volcanic Area ◽  
Wiener Filters ◽  
Mt Etna ◽  
Band Pass ◽  
Magnetic Profile ◽  
Mean Square Error Criterion

The frequency-domain Wiener filtering was applied to magnetic anomalies in the volcanic area of Mt. Etna. This filter, under suitable conditions (additive noise, linear processing and mean-square error criterion), can furnish an effective tool for discriminating the geologic feature of interest (the signal) from the noise. The filter was first tested with synthetic data. Afterwards it was applied to a magnetic profile carried out across the principal fault system of the Mt. Etna volcano, that hosted the dykes feeding both the 1989 and the 1991-93 eruptions. The magnetic anomalies linked to the volcanic section and those linked to the contact between the clay basement and the lava coverage show significant spectral overlap. Thus by estimating the power spectrum of the signal, obtained resolving the forward problem, a least-squares Wiener filter has been designed. In such context, it was possible to verify the effectiveness of Wiener filters, whereas traditional band-pass filtering proved inadequate. In fact, analysis of the noise showed that all the meaningful components of the observed magnetic field were resolved. The results put further constraints on location and geometry of the shallow plumbing system of Mt. Etna.

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