A comparison of robust polynomial fitting, global geopotential model and spectral analysis for regional–residual gravity field separation in the Doñana National Park (Spain)

Martín, Angel; Núñez, M. A.; Gili, Josep A.; Julián, Ana Belén Anquela

doi:10.1016/j.jappgeo.2011.06.037

Cited by 14 publications

(6 citation statements)

References 19 publications

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“…[16] [17] [21]- [27]. Polynomial fit-ting can be applied in local and regional surveys with high-resolution results [16] [25] [26]. As a first step of the qualitative interpretation, a residual-regional isolation was performed analytically.…”

Section: Data Acquisition and Methodologymentioning

confidence: 99%

Qualitative Interpretation of Gravity and Aeromagnetic Data in West of Tikrit City and Surroundings, Iraq

Al-Heety¹,

Al-Mufarji²,

Esho³

2017

IJG

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The qualitative interpretation of anomalies of the gravity and the magnetic fields at the west of Tikrit City and surroundings, Iraq, was carried out. According to the tectonic framework of Iraq, the study area is classified as a part of the stable shelf unit. The polynomial technique was employed to separate the residual-regional anomalies as a first step in the qualitative interpretation. Bouguer gravity anomaly map did not exhibit any clear closures. The magnetic maps showed remarkable high closure in the central eastern part of the study area. The regional gravity and magnetic fields values decline towards the eastern parts of the maps (Mesopotamian Basin) in consistent with the increase in the sedimentary cover (basement depth). The residual gravity and magnetic maps displayed several positive and negative closures. The gravity and magnetic lineaments were depicted and superimposed on the tectonic map of the study area. The rose diagram showed that the dominant orientation of the gravity and magnetic lineaments was toward NE-SW.

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Section: Data Acquisition and Methodologymentioning

confidence: 99%

Qualitative Interpretation of Gravity and Aeromagnetic Data in West of Tikrit City and Surroundings, Iraq

Al-Heety¹,

Al-Mufarji²,

Esho³

2017

IJG

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“…According to Martín et al (2011), Bouguer gravity anomalies were calculated with the equation that defines from Heiskanen and Moritz (1967), Figure 1. :…”

Section: Complete Bouguer Anomaly Gravitymentioning

confidence: 99%

Lineament Extraction using Gravity Data in the Citarum Watershed

Nugraha

Goal

Handayani

et al. 2021

IJG

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Lineament is one of the most important features showing subsurface elements or structural weakness such as faults. This study aims to identify subsurface lineament patterns using automatic lineament in Citarum watershed with gravity data. Satellite gravity data were used to generate a sub-surface lineament. Satellite gravity data corrected using Bouguer and terrain correction to obtain a complete Bouguer anomaly value. Butterworth filters were used to separate regional and residual anomaly from the complete Bouguer anomaly value. Residual anomaly gravity data used to analyze sub-surface lineament. Lineament generated using Line module in PCI Geomatica to obtain sub-surface lineament from gravity residual value. The orientations of lineaments and fault lines were created by using rose diagrams. The main trends observed in the lineament map could be recognized in these diagrams, showing a strongly major trend in NW-SE, and the subdominant directions were in N-S. Area with a high density of lineament located at the Southern part of the study area. High-density lineament might be correlated with fractured volcanic rock upstream of the Citarum watershed, meanwhile, low-density lineament is associated with low-density sediment. The high-density fracture might be associated with intensive tectonics and volcanism.

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“…The regional Bouguer gravity values in Figure 2c were obtained by applying the 20 km upward analytical extension to Figure 2b and the residual Bouguer gravity values in Figure 2d were obtained by applying the 5 km downward analytical extension to Figure 2b. Regional and residual Bouguer gravity anomalies were used to interpret both shallow and deep structures by many researchers (Ates and Kearey, 2000;Ates et al, 2005;Martín et al, 2011;Mohamed et al, 2013;Saleh, 2013).…”

Section: Gravity Data Analysismentioning

confidence: 99%

Seismic a and b-values and crustal parameters of Samos Island-Aegean Sea, Lesvos Island-Karaburun, Chios Island-Gökova Bay earthquakes

Pamukçu¹

2021

Turkish J Earth Sci

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A comparison of robust polynomial fitting, global geopotential model and spectral analysis for regional–residual gravity field separation in the Doñana National Park (Spain)

Cited by 14 publications

References 19 publications

Qualitative Interpretation of Gravity and Aeromagnetic Data in West of Tikrit City and Surroundings, Iraq

Qualitative Interpretation of Gravity and Aeromagnetic Data in West of Tikrit City and Surroundings, Iraq

Lineament Extraction using Gravity Data in the Citarum Watershed

Seismic a and b-values and crustal parameters of Samos Island-Aegean Sea, Lesvos Island-Karaburun, Chios Island-Gökova Bay earthquakes

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