1887
Volume 62 Number 1
  • E-ISSN: 1365-2478

Abstract

ABSTRACT

The Continuous Wavelet Transform was recently proposed for the interpretation of gravity and magnetic potential data. We utilize the Continuous Wavelet Transform of gravity and magnetic data to address one of the most common issues in exploration geophysics: mapping of sub‐basaltic sedimentary strata. We observe that the magnetic response of the basaltic layer is dominant in a three‐layer case of a basalt‐sediment‐basement, whereas the gravity signal is dominated by the base of the sediment. Thus the Continuous Wavelet Transform of the magnetic data is related to the thickness of the basalt and the Continuous Wavelet Transform of the gravity data is related mostly to the bottom of the sediment. These observations are demonstrated with a synthetic model and a few field examples. Derived depths using Continuous Wavelet Transform are in good agreement with known vertical cross‐sections. Therefore, Continuous Wavelet Transform analysis of both gravity and magnetic data offers a possibility for primary information of sub‐basaltic sediment thickness, which can provide a basis for further detailed modelling.

Loading

Article metrics loading...

/content/journals/10.1111/1365-2478.12053
2013-07-30
2024-04-23
Loading full text...

Full text loading...

References

  1. BhattacharjiS., ChatterjeeN., WamplerJ.M., NayakP.N. and DeshmukhS.S.1996. Indian intraplate and continental margin rifting, lithospheric extension, and mantle upwelling in Deccan flood basalt volcanism near the K/T boundary: Evidence from mafic dike swarms. Journal of Geology104, 379–398.
    [Google Scholar]
  2. BhattacharyyaB.K.1972. Design of spatial filters and their application to high‐resolution aeromagnetic data. Geophysics37, 68–91.
    [Google Scholar]
  3. BoukerboutH., GibertD. and SailhacP.2003. Identification of sources of potential fields with the continuous wavelet transform: Application to VLF data. Geophysical Research Letters30, 1427.
    [Google Scholar]
  4. ChamoliA., PandeyA.K., DimriV.P. and BanerjeeP.2010. Crustal configuration of the Northwest Himalaya based on modeling of gravity data. Pure Applied Geophysics168(5), 827–844.
    [Google Scholar]
  5. ChristieP.A.F. and WhiteR.S.2008. Imaging through Atlantic Margin basalts: An introduction to the sub‐basalt mini‐set. Geophysical Prospecting56, 1–4.
    [Google Scholar]
  6. DarnetM., SailhacP. and MarquisG.2004. Geophysical investigation of antique iron furnaces: Insights from modelling magnetic and VLF data. Near Surface Geophysics2, 95–101.
    [Google Scholar]
  7. FediM. and CasconeL.2011. Composite continuous wavelet transform of potential fields with different choices of analyzing wavelets. Journal of Geophysical Research116, B07104, 11 PP.
    [Google Scholar]
  8. FediM., CellaF., QuartaT. and VillaniA.V.2010. 2D continuous wavelet transform of potential field due to extended source distributions. Applied and Computational Harmonic Analysis28, 320–337.
    [Google Scholar]
  9. FediM., PrimiceriR., QuartaT. and VillaniA.V.2004. Joint application of continuous and discrete wavelet transform on gravity data to identify shallow and deep sources. Geophysical Journal International156, 7–21.
    [Google Scholar]
  10. FediM. and QuartaT.1998. Wavelet analysis for the regional residual and local separation of potential field anomalies. Geophysical Prospecting46, 507–525.
    [Google Scholar]
  11. HornbyP., BoschettiF. and HorovitzF.G.1999. Analysis of potential field data in the wavelet domain. Geophysical Journal International137, 175–196.
    [Google Scholar]
  12. Jegen‐KulcsarM., HobbsR.W., TaritsP. and ChaveA.2009. Joint inversion of marine magnetotelluric and gravity data incorporating seismic constraints: Preliminary results of sub‐basalt imaging off the Faroe Shelf. Earth and Planetary Science Letters282, 47–55.
    [Google Scholar]
  13. KeatingP., PinetN., BrouilletteP., SailhacP., DionD. ‐J. and PilkingtonM.2005. Application of the Continuous Wavelet Transform to potential field interpretation in the Gaspé Peninsula. AC‐MAC‐CSPG‐CSSS Joint Meeting, Abstracts Vol. 30, 2005, 100.
  14. KumarD., Ravi., BastiaR. and GuhaD. 2004. Prospect hunting below Deccan basalt: Imaging challenges and solutions. First Break22, 35–39.
    [Google Scholar]
  15. MallatS. and HwangW.L.1992. Singularity detection and processing with wavelets. IEEE Transactions on Information Theory38, 617–643.
    [Google Scholar]
  16. ManiD., Satish KumarT., RasheedM.A., PatilD.J., DayalA.M., GnaneshwarRao T. and BalaramV.2011. Hydrocarbon Prospects in Sub‐trappean Mesozoic Deccan Syneclise, India: Evidence from Surface Geochemical Prospecting. Natural Resource20, 75–88.
    [Google Scholar]
  17. MarteletG., SailhacP., MoreauF. and DiamentM.2001. Characterization of geological boundaries using 1‐D wavelet transform on the gravity data: Theory and application to the Himalaya. Geophysics66, 1116–1129.
    [Google Scholar]
  18. MishraD.C., SinghB., GuptaS.B., Prabhakar RaoM.R.K., SinghA.P., ChandrasekharD.V.et al. 2001. Major lineaments and gravity‐magnetic trends in Saurastra, India. Current Science80, 1059–1067.
    [Google Scholar]
  19. MoreauF.1995. Méthodes de traitement de données géophysiques par transformée en ondelettes. Thèse de doctorat, 177 pp., Universit é de Rennes I, Rennes, France.
    [Google Scholar]
  20. MoreauF., GibertD., HolschneiderM. and SaraccoG.1997. Wavelet analysis of potential fields. Inverse Problems13, 165–178.
    [Google Scholar]
  21. MoreauF., GibertD., HolschneiderM. and SaraccoG.1999. Identification of sources of potential fields with continuous wavelet transform: Basic theory. Journal of Geophysical Research104, 5003–5013.
    [Google Scholar]
  22. MurthyP.V.V.G.R.K. and SharadM.K.1981. The Narmada‐son lineament and the structure of Narmada rift system. Journal of the Geological Society of India22, 112–120.
    [Google Scholar]
  23. PilkingtonM.2006. Joint inversion of gravity and magnetic data for two‐layer models. Geophysics71(3), L35–L42, doi:10.1190/1.2194514.
    [Google Scholar]
  24. PouliquenG. and SailhacP.2003. Wavelet analysis of deep‐tow magnetic profiles: Modeling the magnetic layer thickness over oceanic ridges. Journal of Geophysical Research108, 2297–2315.
    [Google Scholar]
  25. SailhacP., GaldenoA., GibertD. and MoreauF.2000. Identification of sources of potential fields with the continuous wavelet transform: Complex wavelets and application to aeromagnetic profiles in French Guiana. Journal of Geophysical Research105, 19,455–19,475.
    [Google Scholar]
  26. SailhacP. and GibertD.2003. Identification of sources of potential fields with the continuous wavelet transform: Two‐dimensional wavelets and multipolar approximations. Journal of Geophysical Research108, 2296–2306.
    [Google Scholar]
  27. SailhacP., GibertD. and BoukerboutH.2009. The theory of the continuous wavelet transform in the interpretation of potential fields: A review. Geophysical Prospecting57, 517–525
    [Google Scholar]
  28. SarmaS.V.S., VirupakshiG., MurthyD.N., HarinarayanaT., SastryT.S., Someswara RaoM.et al. 1992Magnetotelluric studies for Oil Exploration over Deccan Traps, Saurashtra, Gujarat, India. NGRI Tech. Report No.: NGRI‐92‐LITHOS, 125, 80.
    [Google Scholar]
  29. Satpal, SinghO.P., SarD., ChatterjeeS.M. and SanjeevSawai2006. Integrated interpretation for sub‐basalt imaging in Saurashtra Basin, India. The Leading Edge, 882–885.
    [Google Scholar]
  30. SinghB. and AroraK.2008. Geophysical Exploration for Petroleum in the Subtrappean Mesozoic Sedimentary Formations of India. Memoir Geological Society of India68, 237–258.
    [Google Scholar]
  31. TiwariV.M., GrevemeyerI., SinghB. and MorganJ.P.2007. Variation of Effective Elastic thickness and melt production along the Deccan‐Reunion hotspot track. Earth and Planetary ScienceLetters, doi:10.1016/j.epsl.2007.08.023.
    [Google Scholar]
  32. TiwariV.M. and MishraD.C.2006. Regional and Magnetic anomalies over Deccan Volcanic Province, India. Journal of Geophysics27(4), 75–80.
    [Google Scholar]
  33. TiwariV.M., RaoM.B.S.V. and MishraD.C.2001. Density inhomogeneities under Deccan Volcanic Province as derived from gravity data. Journal of Geodynamics31, 1–17.
    [Google Scholar]
  34. Vall´eeM.A., KeatingP., SmithR.S. and St‐HilaireC.2004. Estimating depth and model type using the continuous wavelet transform of magnetic data. Geophysics69, 191–199.
    [Google Scholar]
  35. WithersR., EggersT., FoxT. and CrebsT.1994. A case study of integrated hydrocarbon exploration through basalt. Geophysics59, 1666–1679.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/journals/10.1111/1365-2478.12053
Loading
/content/journals/10.1111/1365-2478.12053
Loading

Data & Media loading...

Most Cited This Month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error