Qualification and refinement of the gravity database based on cross-validation approach, A case study of Iran
2007 (English)In: Acta Geodaetica et Geophysica, ISSN 1217-8977, Vol. 42, no 3, 285-295 p.Article in journal (Refereed) Published
In this article, we propose a technique for the precise cleaning of the gravity anomaly database based on the cross validation approach. The terrestrial gravity anomalies were compared versus a global geopotential model and take into account the effect of topography in this comparison. The efficiency of the cross-validation technique is illustrated in outlier detection as well as in choosing the proper gridding technique as a case study in construction of the Iranian new gravity database. In order to reduce the effect of topography and the discretisation error, a special interpolation scheme is used for gridding of the free-air gravity anomalies. The final grid file was created based on the Kriging method with 80" x 90" block resolution. The overall accuracy for the new Iranian gravity database is estimated in the order of 10 mGal.
Place, publisher, year, edition, pages
2007. Vol. 42, no 3, 285-295 p.
cross-validation; geoid; gravity anomaly; Iran; outlier; residual terrain model
Earth and Related Environmental Sciences
IdentifiersURN: urn:nbn:se:kth:diva-6190DOI: 10.1556/AGeod.42.2007.3.3ISI: 000258337800003ScopusID: 2-s2.0-34548009131OAI: oai:DiVA.org:kth-6190DiVA: diva2:10831
QC 201009062006-10-032006-10-032010-09-06Bibliographically approved