Journal
ACTA GEOPHYSICA
Volume 67, Issue 6, Pages 1799-1807Publisher
SPRINGER INTERNATIONAL PUBLISHING AG
DOI: 10.1007/s11600-019-00336-9
Keywords
Building correction; Microgravimetry; Building density; Urban areas; Simplified building model
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Funding
- Faculty of Geology Geophysics and Environmental Protection of the AGH University of Science and Technology, Krakow, Poland [16.16.140.315]
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Gravity (microgravity) research is more frequently carried out in urban areas, in close proximity to various types of buildings. It is necessary to take into account the gravity impact of these buildings on the measurements by calculating and factoring in the appropriate correction. The easiest method to calculate the corrections is to base them on simplified models of the buildings, approximated mostly by a rectangular prism. This paper presents an analysis of correction based on simplified models of six different buildings. It has been clearly demonstrated that density of a simplified model of a building or an element of the building is different from the average density, especially for gravity measurements inside the buildings. The research demonstrates that it is better to approximate the building with two or three rectangular prisms than with only one treated as a whole. However, the difficulty lies in determining the density of the lowest storey, the value of which diverges from the average density the most. Nevertheless, it can be concluded that in calculating building corrections simplified models of the buildings can be used, even for observation stations that are located in a close proximity to the buildings, as long as the conditions described in this article are met.
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