Roughness of three types of gravity disturbances and their correlation with topography in rugged mountains and flat regions

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• 作者：Robert Tenzer (1)
  H. Hamayun (2)
  Peter Vajda (3)
  
• 关键词：gravity disturbances ; roughness ; topography of mountains
• 刊名：Acta Geophysica
• 出版年：2009
• 出版时间：September 2009
• 年：2009
• 卷：57
• 期：3
• 页码：657-679
• 全文大小：4213KB
• 参考文献：1. Blakely, R.J. (1996), / Potential Theory in Gravity and Magnetic Applications, Cambridge University Press, Cambridge.
  2. Caratori Tontini, F., F. Graziano, L. Cocchi, C. Carmisciano, and P. Stefanelli (2007), Determining the optimal Bouguer density for a gravity data set: implications for the isostatic setting of the Mediterranean Sea, / Geophys. J. Int. 169, 380-88. CrossRef
  3. Chapin, D.A. (1996), A deterministic approach toward isostatic gravity residuals -a case study from South America, / Geophysics 4, 1022-033. CrossRef
  4. G?tze, H.-J., B. Meurers, S. Schmidt, and P. Steinhauser (1991), On the isostatic state of the eastern Alps and the central Andes; A statistical comparison. In: R.S. Harmon and C.W. Rapela (eds.), / Andean Magmatism and its Tectonic Setting, Geol. Soc. Am. Spec. Paper 265, 279-90.
  5. Hackney, R.I., and W.E. Featherstone (2003), Geodetic versus geophysical perspectives of the ‘gravity anomaly- / Geophys. J. Int. 154, 1, 35-3, DOI: 10.1046/j.1365-246X.2003.01941.x, Corrigendum (2006) / Geophys. J. Int. 167, 2, 585-585, DOI: 10.1111/j.1365-246X.2006.03035.x. CrossRef
  6. Heiskanen, W.A., and H. Moritz (1967), / Physical Geodesy, Freeman, San Francisco.
  7. Hinze, W.J. (2003), Bouguer reduction density, why 2.67? / Geophysics 68, 5, 1559-560, DOI: 10.1190/1.1620629. CrossRef
  8. Hinze, W.J., C. Aiken, J. Brozena, B. Coakley, D. Dater, G. Flanagan, R. Forsberg, Th. Hildenbrand, G.R. Keller, J. Kellogg, R. Kucks, X. Li, A. Mainville, R. Morin, M. Pilkington, D. Plouff, D. Ravat, D. Roman, J. Urrutia-Fucugauchi, M. Véronneau, M. Webring, and D. Winester (2005), New standards for reducing gravity data: The North American gravity database, / Geophysics 70, J25–J32, DOI: 10.1190/1.1988183. CrossRef
  9. Ivan, M. (1986), On the upward continuation of potential field data between irregular surfaces, / Geophys. Prosp. 34, 735-42. CrossRef
  10. Kaban, M.K., P. Schwintzer, and S.A. Tikhotsky (1999), Global isostatic gravity model of the Earth, / Geophys. J. Int. 136, 519-36. CrossRef
  11. Kaban, M.K., P. Schwintzer, and Ch. Reigber (2004), A new isostatic model of the lithosphere and gravity field, / J. Geodesy 78, 368-85, DOI: 10.1007/s00190-004-0401-6. CrossRef
  12. Lemoine, F.G., S.C. Kenyon, J.K. Factor, R.G. Trimmer, N.K. Pavlis, D.S. Chinn, C.M. Cox, S.M. Klosko, S.B. Luthcke, M.H. Torrence, Y.M. Wang, R.G. Williamson, E.C. Pavlis, R.H. Rapp, and T.R. Olson (1998), The development of the joint NASA GSFC and the National Imagery and Mapping Agency (NIMA) geopotential model EGM-6, / NASA Technical Publ. TP-1998-206861.
  13. Miku?ka, J., R. Pa?teka, and I. Maru?iak (2006), Estimation of distant relief effect in gravimetry, / Geophysics 71, J59–J69, DOI: 10.1190/1.2338333. CrossRef
  14. Nettleton, L.L. (1939), Determination of density reduction for gravimeter observations, / Geophysics 4, 176-83. CrossRef
  15. Nettleton, L.L. (1942), Gravity and magnetic calculations, / Geophysics 7, 293-10. CrossRef
  16. Parasnis, D.S. (1973), Gravity methods. In: D.S. Parasnis (ed.), / Mining Geophysics, 250 p., Elsevier, Amsterdam.
  17. Pearson, K. (1896), Mathematical contributions to the theory of evolution. III -Regression, heredity and panmixia, / Phil. Trans. Roy. Soc. Lond. A 187, 253-18. CrossRef
  18. Simpson, R.W., R.C. Jachens, R.J. Blakely, and R.W. Saltus (1986), A new isostatic residual gravity map of the conterminous United States with a discussion on the significance of isostatic residual anomalies, / J. Geophys. Res. 91, 8348-372. CrossRef
  19. Thorarinsson, F., and S.G. Magnusson (1990), Bouguer density determination by fractal analysis, / Geophysics 55, 7, 932-35. CrossRef
  20. Vajda P., P. Vaní?ek, and B. Meurers (2006), A new physical foundation for anomalous gravity, / Studia Geophys. Geod. 50, 2, 189-16, DOI: 10.1007/s11200-006-0012-1. CrossRef
  21. Vajda, P., P. Vaní?ek, P. Novák, R. Tenzer, and A. Ellmann (2007), Secondary indirect effects in gravity anomaly data inversion or interpretation, / J. Geophys. Res. 112, B06411, DOI: 10.1029/2006JB004470. CrossRef
  22. Vajda, P., A. Ellmann, B. Meurers, P. Vaní?ek, P. Novák, and R. Tenzer (2008), Global ellipsoid-referenced topographic, bathymetric and stripping corrections to gravity disturbance, / Studia Geophys. Geod. 52, 1, 19-4, DOI:10.1007/s11200-008-0003-5. CrossRef
  23. Vaní?ek, P., and E.J. Krakiwsky (1986), / Geodesy: The Concepts, 2nd rev. ed., Elsevier Science Publishers, Amsterdam.
  24. Woollard, G.P. (1959), Crustal structure from gravity and seismic measurements, / J. Geophys. Res. 64, 1521-544. CrossRef
  25. Woollard, G.P. (1969), Regional variations in gravity. In: P.J. Hart (ed.), / The Earth’s Crust and Upper Mantle, Geophys. Monography 13, 320-41.
  
• 作者单位：Robert Tenzer (1)
  H. Hamayun (2)
  Peter Vajda (3)
  
  1. School of Surveying, Faculty of Sciences, University of Otago, Dunedin, New Zealand
  2. Delft Institute of Earth Observation and Space Systems (DEOS), Delft University of Technology, Delft, The Netherlands
  3. Geophysical Institute, Slovak Academy of Sciences, Bratislava, Slovak Republic
  
• ISSN：1895-7455

文摘

We investigate the roughness of and the correlation with topography of the observed, topographically corrected (T), and bathymetrically and topographically corrected (BT) gravity disturbances. The numerical investigation is carried out for the gravity disturbances at the Earth’s surface and for the upward continued gravity disturbances at different altitudes. The area of study comprises a rough part of the Canadian Rockies surrounded by flat regions. The smoothest at the Earth’s surface are the BT gravity disturbances. The evolution of roughness with altitude shows an interesting phenomenon, diverse for the three types of gravity disturbances. The correlation with topography over the study area of the observed gravity disturbances is bellow 0.6, and of the BT gravity disturbances approximately ?.6. The largest absolute value, of about ?.75, is found between the topography and the T gravity disturbances. This large negative correlation indicates a presence of the isostatic compensation in mountainous regions of the Canadian west coast.