Preprint Article Version 1 This version is not peer-reviewed

Kriging with Small Number of Data Supported by Jack-Knifing, Case Study in the Sava Depression (Northern Croatia)

Version 1 : Received: 27 November 2018 / Approved: 29 November 2018 / Online: 29 November 2018 (03:53:34 CET)

A peer-reviewed article of this Preprint also exists.

Malvić, T.; Ivšinović, J.; Velić, J.; Rajić, R. Kriging with a Small Number of Data Points Supported by Jack-Knifing, a Case Study in the Sava Depression (Northern Croatia). Geosciences 2019, 9, 36. Malvić, T.; Ivšinović, J.; Velić, J.; Rajić, R. Kriging with a Small Number of Data Points Supported by Jack-Knifing, a Case Study in the Sava Depression (Northern Croatia). Geosciences 2019, 9, 36.

Journal reference: Geosciences 2019, 9, 36
DOI: 10.3390/geosciences9010036

Abstract

Presented is semivariogram and the Ordinary Kriging analyses of porosity data from the Sava Depression (Northern Croatia), as part of the Croatian part of the Pannonian Basin System. Data are taken from hydrocarbon reservoirs of the Lower Pontian (Upper Miocene) age, which belongs to the Kloštar-Ivanić Formation. Original datasets had been jack-knifed with purpose to “artificially” increased data and calculate the more reliable semivariograms. The results showed that such improvements can assist in the interpolation of more reliable maps. The both sets, made by original and jack-knifed data, need to be compared using geological recognition of non-allowed shapes (“bull-eyes”, “butterfly effects”) as well as cross-validation results. That comparison made possible to select the most appropriate porosity interpolation.

Subject Areas

ordinary Kriging; variogram; jack-knifing; upper miocene; northern Croatia; porosity

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