Title:
METHOD FOR ESTIMATING SURFACE DENSITY VALUE IN GRAVITY GRADIOMETRY DATA
Document Type and Number:
WIPO Patent Application WO/2017/135183
Kind Code:
A1
Abstract:
[Problem] To estimate a surface density distribution that allows application of terrain correction values having high spatial resolution, in which surface terrain, layer thickness, and density are taken into consideration, in analyzing airborne gravity gradiometry survey data. [Solution] Measured horizontal gravity gradient data are arranged in the form of a grid, horizontal gravity gradient values at individual grid points are obtained to create horizontal gravity gradient grid data, the origin of addition coefficient grid data is set so as to overlap each of the grid points, values of products of the horizontal gravity gradient values and the addition coefficients are obtained at all the overlapping grid points, horizontal gravity gradient weighted values are calculated by adding all these values together to create horizontal gravity gradient weighted data, and surface density values are estimated through linear correlation analysis between the horizontal gravity gradient weighted data and synthetic horizontal gravity gradient weighted data attributable to surface mass calculated from terrain elevation data.
Inventors:
MIZUTANI SHIGEKI (JP)
Application Number:
PCT/JP2017/003103
Publication Date:
August 10, 2017
Filing Date:
January 30, 2017
Export Citation:
Assignee:
MIZUTANI SHIGEKI (JP)
International Classes:
G01V7/06; G01V7/16
Foreign References:
| US20040000910A1 | 2004-01-01 | |||
| US20130166212A1 | 2013-06-27 |
Other References:
ZHANG, CHANGYOU ET AL.: "Euler deconvolution of gravity tensor gradient data", GEOPHYSICS, vol. 65, no. 2, 2000, pages 512 - 520
REID, A. B. ET AL.: "Euler Deconvolution, Past, Present and Future: A Review", APPLICATIONS OF REGIONAL GEOPHYSICS AND GEOCHEMISTRY, 1997, pages 861 - 864, XP055404403
REID, A. B. ET AL.: "Magnetic interpretation in three dimensions using Euler deconvolution", GEOPHYSICS, vol. 55, no. 1, January 1990 (1990-01-01), pages 80 - 91, XP055404678
REID, A. B. ET AL.: "Euler Deconvolution, Past, Present and Future: A Review", APPLICATIONS OF REGIONAL GEOPHYSICS AND GEOCHEMISTRY, 1997, pages 861 - 864, XP055404403
REID, A. B. ET AL.: "Magnetic interpretation in three dimensions using Euler deconvolution", GEOPHYSICS, vol. 55, no. 1, January 1990 (1990-01-01), pages 80 - 91, XP055404678
Attorney, Agent or Firm:
YEN Masaaki et al. (JP)
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