Gravimetric knowledge analysis of the Novosibirsk region territory according to ground measurements data

Abstract

The aim of the work is the analysis of the gravimetric knowledge of the Novosibirsk Region territory based on ground-based measurements presented as mixed gravity anomalies makes it possible to as-sess the reliability and quality of information about the characteristics of the Earth's gravitational field and use it to solve problems of the economy and the defense capability of the state, taking into account the demand and accuracy range. The results of gravity acceleration measurements on the territory of the Novosibirsk region and its immediate surroundings (in the hundred-kilometer zone – the territory of the Tomsk, Omsk, Kemerovo regions and Altai Territory) were obtained from the archives of the Federal State Institution "TFGI for the Siberian Federal District". Archival data of the gravity surveys results were digitized, systematized and analyzed. Particular attention is paid to the gravimetric study of the territory of the Novosibirsk region. The results of the gravimetric information analysis are presented in the form of cartograms. The paper compares ground-based gravimetric information for the study area with the data of the modern global geopotential model XGM2019e_2159. The root mean square error of the discrepancy between the model data and ground information is 3.8 mGal in the range of differences from +14 to -12 mGal. The results of the study allow us to conclude that it is possible to use ground-based gravimetric measurements obtained in the study area for regional modeling of the characteristics of the gravitational field