Analisis Kedalaman Sumber Anomali Gravitasi menggunakan Spectral Statistical Technique di daerah Godean Yogyakarta

Muhammad Faizal Zakaria

Abstract


Depth analysis of the gravity anomaly source using Spectral Statistical Technique has been carried out in the Godean area, Yogyakarta. This research was conducted to determine the depth of the formation in the study area. This study used 56 gravity acquisition points spread over 2 lines  along 12 km east-west direction. Depth analysis is carried out from the Complete Bouguer Anomaly profile. Spectral Statistical Technique is used as a method of determining depth by calculating the slope of the graph Ln (PS) vs k. The results of these calculations are obtained slope of 2 types of anomalies, namely deep anomalies and shallow anomalies. The deep anomaly has a slope of -9704, while the shallow anomaly has a slope of -279. The depth of the anomalous source in the study area has a value of 770 m for deep anomalies interpreted as Nanggulan formations, and 22 m for shallow anomalies interpreted as the Merapi Muda Volcano Deposition.


Keywords


Spectral Statistical Technique, Depth of Gravity Anomaly Source

References


Ali, M. Y., Fairhead, J. D., Green, C. M., & Noufal, A. (2017). Basement structure of the United Arab Emirates derived from an analysis of regional gravity and aeromagnetic database. Tectonophysics. https://doi.org/10.1016/j.tecto.2017.06.006

Barianto, D. H., Aboud, E., & Setijadji, L. D. (2009). Structural analysis using landsat TM, gravity data, and paleontological data from tertiary rocks in yogyakarta, Indonesia. Memoirs of the Faculty of Engineering, Kyushu University.

BOTT, M. H. P., & SMITH, R. A. (1958). THE ESTIMATION OF THE LIMITING DEPTH OF GRAVITATING BODIES. Geophysical Prospecting, 6(1), 1–10. https://doi.org/10.1111/j.1365-2478.1958.tb01639.x

BRUCKSHAW, J. M. (1941). Geophysical Prospecting for Oil. Nature, 148(3745), 151–152. https://doi.org/10.1038/148151a0

Dampney, C. N. G. (1977). Gravity interpretation for hydrocarbon exploration?a workshop manual or learning to see geology in a gravity profile. Exploration Geophysics, 8(4), 161–180. https://doi.org/10.1071/EG977161

Handyarso, A., & Kadir, W. G. A. (2017). Gravity data decomposition based on spectral analysis and halo wavelet transform, case study at bird’s head Peninsula, west papua. Journal of Engineering and Technological Sciences. https://doi.org/10.5614/j.eng.technol.sci.2017.49.4.1

Hinze, W. J., Von Frese, R. R. B., & Saad, A. H. (2010). Gravity and magnetic exploration: Principles, practices, and applications. In Gravity and Magnetic Exploration: Principles, Practices, and Applications. https://doi.org/10.1017/CBO9780511843129

Kilty, K. T. (1983). Werner deconvolution of profile potential field data. Geophysics, 48(2), 234–237. https://doi.org/10.1190/1.1441463

Mousa, A., Mickus, K., & Al-Rahim, A. (2017). The thickness of cover sequences in the Western Desert of Iraq from a power spectrum analysis of gravity and magnetic data. Journal of Asian Earth Sciences. https://doi.org/10.1016/j.jseaes.2017.02.022

Nettleton, L. L. (1942). GRAVITY AND MAGNETIC CALCULATIONS. GEOPHYSICS, 7(3), 293–310. https://doi.org/10.1190/1.1445015

Rahardjo, W., Sukandarrumidi, & Rosidi, H. M. D. (1995). Peta geologi lembar Yogyakarta, Jawa [peta]. https://opac.perpusnas.go.id/DetailOpac.aspx?id=141772

SMITH, R. A. (1959). SOME DEPTH FORMULAE FOR LOCAL MAGNETIC AND GRAVITY ANOMALIES. Geophysical Prospecting, 7(1), 55–63. https://doi.org/10.1111/j.1365-2478.1959.tb01453.x

SMITH, R. A. (1960). SOME FORMULAE FOR INTERPRETING LOCAL GRAVITY ANOMALIES. Geophysical Prospecting, 8(4), 607–613. https://doi.org/10.1111/j.1365-2478.1960.tb01736.x

Telford, W. M., Geldart, L. P., & Sheriff, R. E. (1990). Applied geophysics. 2nd edition. Applied Geophysics. 2nd Edition.

Thompson, D. T. (1982). EULDPH: a new technique for making computer-assisted depth estimates from magnetic data. Geophysics, 47(1), 31–37. https://doi.org/10.1190/1.1441278




DOI: http://dx.doi.org/10.20527/flux.v18i1.8526

Article Metrics

Abstract view : 32 times
PDF (Bahasa Indonesia) - 14 times

Refbacks

  • There are currently no refbacks.


Copyright (c) 2021 Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

Association with:

Physical Society of Indonesia

Indexed by:

 

Creative Commons License
Jurnal Fisika FLux: Jurnal Ilmiah FMIPA Universitas Lambung Mangkurat is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License.