2007
DOI: 10.1556/ageod.42.2007.3.3
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Qualification and refinement of the gravity database based on cross-validation approach — A case study of Iran

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Cited by 13 publications
(11 citation statements)
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“…The Leaveone-out cross validation (LOOCV) is used in this study to predict new gravity values. A procedure for applying LOOCV has been addressed by Kiamehr (2007). In this study, 389 points were detected as outliers (cf.…”
Section: R a F Tmentioning
confidence: 99%
“…The Leaveone-out cross validation (LOOCV) is used in this study to predict new gravity values. A procedure for applying LOOCV has been addressed by Kiamehr (2007). In this study, 389 points were detected as outliers (cf.…”
Section: R a F Tmentioning
confidence: 99%
“…Kiamehr (2007) created a more complete and also refined new gravity database for Iran and all possible outliers were detected and removed from database by using the Least Squares Collocation (LSC) approach. A total number of 26,125 point and mean gravity data were collected from different data sources in order to create gravity database.…”
Section: Terrestrial Gravity Anomaliesmentioning
confidence: 99%
“…A special method was used for the interpolation of free-air gravity anomalies (for more details, see Kiamehr 2007) in order to include the effect of topography in gridding of data. The free-air gravity anomalies are interpolated on a grid with a unit cell size of 80″ × 90″.…”
Section: Terrestrial Gravity Anomaliesmentioning
confidence: 99%
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“…The discretisation error occurs due to the loss of short wavelength gravity information when estimating the mean gravity anomalies g ∆ from point gravity data. The following technique is proposed to reduce the discretisation error (Kiamehr 2005a). First a topographic correction (e.g., using the RTM method / Forsberg-1984) is made, that results into reduced gravity anomalies, which are assumed to be smoother than the original ones.…”
Section: Conclusion and Recommendationsmentioning
confidence: 99%