Evaluation of recent Earth’s global gravity field models with terrestrial gravity data

Alexander P. KARPIK; Vadim F. KANUSHIN; Irina G. GANAGINA; Denis N. GOLDOBIN; Nikolay S. KOSAREV; Alexandra M. KOSAREVA

doi:10.1515/congeo-2016-0001

Alexander P. KARPIK Siberian State University of Geosystems and Technology, Novosibirsk, Russian Federation
Vadim F. KANUSHIN Siberian State University of Geosystems and Technology, Novosibirsk, Russian Federation
Irina G. GANAGINA Siberian State University of Geosystems and Technology, Novosibirsk, Russian Federation
Denis N. GOLDOBIN Siberian State University of Geosystems and Technology, Novosibirsk, Russian Federation
Nikolay S. KOSAREV Siberian State University of Geosystems and Technology, Novosibirsk, Russian Federation
Alexandra M. KOSAREVA Siberian State University of Geosystems and Technology, Novosibirsk, Russian Federation

DOI: https://doi.org/10.1515/congeo-2016-0001

Keywords: Earth’s gravity field, differences, gravity anomalies, global geopotential model, terrestrial gravity data

Abstract

In the context of the rapid development of environmental research technologies and techniques to solve scientific and practical problems in different fields of knowledge including geosciences, the study of Earth’s gravity field models is still important today. The results of gravity anomaly modelling calculated by the current geopotential models data were compared with the independent terrestrial gravity data for the two territories located in West Siberia and Kazakhstan. Statistical characteristics of comparison results for the models under study were obtained. The results of investigations show that about 70% of the differences between the gravity anomaly values calculated by recent global geopotential models and those observed at the points in flat areas are within ±10 mGal, in mountainous areas are within ±20 mGal.