Geophysics

1901 Submissions

[4] viXra:1901.0472 [pdf] submitted on 2019-01-31 06:30:37

Weak Signal Detection in Geophysical Data using Vector-FFT

Authors: Herbert Weidner
Comments: 5 Pages.

The gravimeter in CB measures at 50.65 μHz a hitherto unknown, amplitude-modulated and very weakly damped natural vibration of the earth, the cause of which is not recognizable. It could be a member of the famous "Slichter Triplet".
Category: Geophysics

[3] viXra:1901.0447 [pdf] submitted on 2019-01-29 16:18:49

Frequency Measurements in Noisy Records using Vector-FFT

Authors: Herbert Weidner
Comments: 5 Pages.

The search for weak spectral lines with SNR ≈ 1 in noisy gravitational data is difficult, since the analysis methods used so far do not exploit all available information. The vector FFT presented here reduces the noise level and narrows the FWHM of all spectral lines by taking advantage of the phase information of the FFT.
Category: Geophysics

[2] viXra:1901.0393 [pdf] submitted on 2019-01-26 05:26:32

Black Carbon Shuts Out Daylight in Soil

Authors: Magnus Carlsson, Olof Andrén
Comments: 1 Page.

We tested the effects of charcoal addition on growth of Lepidium Sativum in soil.
Category: Geophysics

[1] viXra:1901.0159 [pdf] submitted on 2019-01-12 01:18:15

Exploration Geophysics at Home: Search for Minerals.

Authors: Giuliano Bettini
Comments: 12 Pages.

Exploration geophysics is an applied branch of geophysics, which uses physical methods, such as seismic, gravitational, magnetic, electromagnetic etc, to measure the physical properties of the subsurface. It is most often used to detect or infer the presence and position of economically useful geological deposits, such as ore minerals. The paper shows the results of a mineral search at a feldspar mine with contact rocks wich are rich in peculiar minerals. Nickel and silver mineral were analyzed in this locality, some of them yet unidentified.
Category: Geophysics