Determination of reactivated regions and faults in the Iraq Southern Desert with the new edge technique, Inverse Tilt Angle of Second-gradients (ITAS)

Al-Bahadily, Hayder Adnan; Al-Rahim, Ali Maki; Smith, Richard Stuart

doi:10.1007/s11600-023-01176-4

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Tytuł artykułu

Determination of reactivated regions and faults in the Iraq Southern Desert with the new edge technique, Inverse Tilt Angle of Second-gradients (ITAS)

Autorzy

Al-Bahadily Hayder Adnan , Al-Rahim Ali Maki , Smith Richard Stuart

Wybrane pełne teksty z tego czasopisma

https://www.springer.com/journal/11600

Identyfikatory

DOI

10.1007/s11600-023-01176-4

Warianty tytułu

Języki publikacji

Abstrakty

A well-known and essential task in magnetic data interpretation is the structural mapping of basement terranes. Useful tools for analyzing the deep basement are edge-detection filters that normalize the first-/second-order gradients of the magnetic field in three spatial directions. Different edge-detection filters can reveal different structures; for example, filters that normally involve higher-order gradients may detect small-scale magnetic sources. This study aims to define magnetic bodies and interpret intra-basement structures from aeromagnetic data. For this purpose, we utilize three commonly used edge-detection filters that show edges as peaks, which can sometimes be quite broad. In addition, we suggest a new high-resolution filter that shows edges as a sharp crossover. The filters have been tested on the Bishop magnetic model and real airborne magnetic data from the Iraq Southern Desert (SD). Comparing the products of the proposed crossover filter with the three common filters shows similar high-resolution products, but the new filter can often highlight both shallow and deep subtle basement fabric. Our study of the SD magnetic dataset defined older reactivated regions, structural elements, and the trends of intrabasement fractures associated with more recent seismic events.

Słowa kluczowe

basement airborne survey edge detection reactivated faults

podłoże badanie lotnicze wykrywanie krawędzi

Wydawca

Instytut Geofizyki PAN
Springer

Czasopismo

Acta Geophysica

Rocznik

2024

Tom

Vol. 72, no. 3

Strony

1675--1692

Opis fizyczny

Bibliogr. 24 poz.

Twórcy

autor

Al-Bahadily Hayder Adnan

hayder.adnan17@gmail.com

Department of Geology, College of Science, University of Baghdad, Baghdad, Iraq
Iraq Geological Survey (GEOSURV), Baghdad, Iraq

https://orcid.org/0000-0003-1970-5863

autor

Al-Rahim Ali Maki

Department of Geology, College of Science, University of Baghdad, Baghdad, Iraq

autor

Smith Richard Stuart

Harquail School of Earth Sciences, Laurentian University, Sudbury, ON P3E 2C6, Canada

Bibliografia

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6. Series, sheet No. 2, Tectonic Map of Iraq. Publication of GEO-SURV, Baghdad, Iraq
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22. Smith RS, Roots EA, Vavavur R (2022) Transformation of magnetic data to the pole and vertical dip and a related apparent susceptibility transform: Exact and approximate approaches. Geophysics 87(2):G1-G14. https://doi.org/10.1190/geo2020-0827.1
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Bibliografia

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