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Geostatystyka dla niematematyków. Przewodnik praktyczny – część II

Naworyta Wojciech

Przegląd Geologiczny

2024

Vol. 72, nr 8

391--398

Geostatistical tools are useful and even necessary in many fields, not only in geology. The obstacle to their widespread use is the seemingly difficult mathematical foundations with which the teaching of the subject usually begins. Many years of experience and observations allow me to claim that even if geostatistical methods are used, they are often incomplete and imperfect. In a series of three articles, I would like to introduce potential non-mathematicians to the most important methods and tools from the arsenal of spatial statistics and how to use them properly. I will indicate the areas where they can be used, explain whether they can always be used, show what decisions should be made during calculations, and how to interpret the obtained results. It will not be a compendium, but rather a pocket guide facilitating the reader ’s first contact with geostatistics. In this, the second article of a three-part series, I will focus on the variogram - the most important tool in geostatistics. I will show what is hidden behind the mathematical formula and what information about the analysed spatial phenomenon can be obtained only using a variogram. In the third article, I will present another useful function of the variogram. It will act as a tool in the process of geostatistical interpolation using the kriging method.