1887
Volume 8, Issue 4
  • ISSN: 1569-4445
  • E-ISSN: 1873-0604

Abstract

ABSTRACT

The interpretation of airborne gamma‐ray data is considerably complicated by the attenuating effects of vegetation. In order to correct these effects we used simultaneously measured laser altimeter data to characterize the vegetation cover. To describe the attenuation effect and correct its consequences on gamma‐ray data we used a simple model of exponential absorption of monoenergetic gamma‐ray photons by an attenuating medium. The determination of the corresponding linear attenuation coefficients for potassium (K), uranium (U) and thorium (Th) is based on data from an airborne geophysical survey in Austria.

Loading

Article metrics loading...

/content/journals/10.3997/1873-0604.2010013
2010-05-01
2020-05-26
Loading full text...

Full text loading...

References

  1. AlletsgruberI.2007. Radongehalte in Grundwässern des Mühlviertels (Oberösterreich): geologische und hydrogeologische Faktoren.PhD thesis, University of Salzburg (in German).
    [Google Scholar]
  2. AspinS.J. and BierwirthP.N.1997. GIS analysis of the effects of forest biomass on gamma‐radiometric images. Proceedings 3rd National Forum on GIS in the Geosciences, AGSO record 1997/36, 77–83.
    [Google Scholar]
  3. BauerhanslC., KoukalT. and SchadauerK.2007. Erste österreichweite Waldkarte. Forstzeitung12, S.26f.
    [Google Scholar]
  4. BierwirthP.N., AspinS.J., RyanP.J. and McKenzieN.J.1998. Gamma‐ray remote sensing of soil properties in a forested area near Batlow, NSW. Proceedings of the 9th Australasian Remote Sensing Conference.
    [Google Scholar]
  5. FanoU.1953. Gamma‐ray attenuation. Part I, Basic processes. Nucleonics11, 8–12.
    [Google Scholar]
  6. GasserV.2006. Radionuklide im Grundwasser des östlichen Mühlviertels (Böhmische Masse).PhD thesis, University of Salzburg.
    [Google Scholar]
  7. GrastyR.L.1976. Applications of gamma radiation in remote sensing. In: Remote Sensing for Environmental Sciences (ed. E.Schanda ), pp. 257–275. Springer Verlag.
    [Google Scholar]
  8. GrastyR.L.1979. Gamma‐ray spectrometric methods in uranium exploration – theory and operational procedures. Geophysics and geochemistry in the search for metallic ores. Geological Survey of Canada, Economic Geology Report 31, 10B.
  9. International Atomic Energy Agency (IAEA)
    International Atomic Energy Agency (IAEA) . 1979. Gamma Ray Surveys in Uranium Exploration. Technical Report, Series No. 186, Vienna.
    [Google Scholar]
  10. International Atomic Energy Agency (IAEA)
    International Atomic Energy Agency (IAEA) . 2003. Guidelines for radioelement mapping using gamma ray spectrometry data. IAEA‐TECDOC‐1363.
  11. KrenmayrH.G., SchnabelW., ReitnerJ.et al. 2006. Geologische Karte von Oberösterreich 1:200 000.Geologische Bundesanstalt, Wien.
    [Google Scholar]
  12. MintyB.R.S.1997. The fundamentals of airborne gamma‐ray spectrometry. AGSO Journal of Australian Geology & Geophysics17, 39–50.
    [Google Scholar]
  13. MintyB.R.S., LuyendykA.P.J. and BrodieR.C.1997. Calibration and data processing for airborne gamma‐ray spectrometry. AGSO Journal of Australian Geology & Geophysics, 17, 51–62.
    [Google Scholar]
  14. PereiraE.B. and NordemannD.J.R.1983. Effects of a tropical rain forest cover on airborne gamma‐ray spectrometry. Revista Brasileira de Geofisica1, 99–108.
    [Google Scholar]
  15. RubinR.M., PriceJ.H. and WellsM.B.1979. Effects of vegetation on the energy and angular distributions of uranium daughter gamma rays at an altitude of 121.9 meters. Technical Report GJBX‐55(80), Radiation Research Associates Inc., Fort Worth, Texas, USA.
  16. SchadauerK., GschwantnerT. and GablerK.2007. Austrian National Forest inventory: Caught in the past and heading toward the future. General Technical Report/USDA Forest Service, North Central Research Station, St. Paul, (WO‐77), 47–54.
  17. SchetselaarE.M. and RenczA.N.1997. Reducing the effects of vegetation cover on airborne radiometric data using Landsat TM data. International Journal of Remote Sensing18, 1503–1515.
    [Google Scholar]
  18. SchubertG. and FingerF.2010. Geologische Karte der Republik Österreich 1:50 000, Blatt 16 Freistadt.Geologische Bundesanstalt, Wien.
    [Google Scholar]
  19. SchwarzG.F., RybachL. and KlingeleE.E.1997. Design, calibration, and application of an airborne gamma spectrometer system in Switzerland. Geophysics62, 1369–1378.
    [Google Scholar]
  20. WoodsF.W., HoughW.A., O’NeaD. and BarnettJ.1965. Gamma ray attenuation by Loblolly pine wood: An investigation of integral counting. Forest Science11, 341–345.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/journals/10.3997/1873-0604.2010013
Loading
/content/journals/10.3997/1873-0604.2010013
Loading

Data & Media loading...

  • Article Type: Research Article
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