A brief note on the effects of floating standard deviation (non- derivative) and horizontal gradient (derivative) filters

Yıl 2019, Cilt: 159 Sayı: 159, 235 - 237, 15.08.2019

Ceyhan Ertan Toker

https://doi.org/10.19111/bulletinofmre.546153

Cited By: 3

Öz

When processing gravity data, the
filters are used in space and frequency environments. The filters allow more
selectable parameter estimations than raw data about the structure being
examined. Filtering in a broad sense means monitoring the data under the
constraints we want. While the filters allow some information to become more
noticeable, they allow some information to be lost or become less noticeable
from data. In this case, the losses in the data make the interpretation
difficult and can cause errors. Derivative and phase filters provide
quantitative information about the variation of data in different directions.
The display of the change results in a positive or negative manner proportional
to derivative sensitivity and phase sharpness, and this may be observed in this
data. In the structural boundary analysis, since the sudden changes in the
derivative cause oscillations, the boundaries become questionable. Limiting the
data neighborhoods with a window by controlling the deviation without using
derivative and the filters that allow boundary analysis non-derivative by floating
this limitation are used to illuminate the boundary relationships.

Anahtar Kelimeler

Gravity, Filter, Standard deviation, Long wavelength, Nonderivatives

Kaynakça

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• D’errico, J. 2016. Personel Web Page https://www. mathworks.com/matlabcentral/.../869215-john
• Gravity Data from: Bureau Gravimetrique International (BGI). DOI:10.18168/BGI.
• Toker, C. E., Çiftçi, Y., Ayva, A., Kürçer, A. 2014. Two examples for imaging buried geological boundaries: Sinkhole structure and Seyit Hacı fault, Karapınar, Konya. Bulletin of the Mineral Research and Exploration. 149, 189-199, Ankara.
• Toker, C. E., Ulugergerli Emin. U., Kılıç, A.R. 2018. Naşa Sokulumu (Batı Anadolu) ve tektonik anlamı: gravite ve deprem verilerinin birlikte analizi. Maden Tetkik ve Arama Dergisi. 156:251-262