ANALYSIS AND COMPARISON OF GRAVITY ANOMALIES FROM THE GLOBAL GEOPOTENTIAL MODELS EGM 2008 AND EIGEN- 6C4 WITH AVAILABLE GRAVITY ANOMALIES IN AN EXTREMELY MOUNTAINOUS REGION OF THE TERRITORY OF SOUTHWEST BULGARIA - RILA MOUNTAIN: ANALYSIS AND COMPARISON OF GRAVITY ANOMALIES FROM THE GLOBAL GEOPOTENTIAL MODELS EGM 2008 AND EIGEN- 6C4 WITH AVAILABLE GRAVITY ANOMALIES IN AN EXTREMELY MOUNTAINOUS REGION OF THE TERRITORY OF SOUTHWEST BULGARIA - RILA MOUNTAIN

Krasimira  Kirilova

doi:10.46687/jsar.v29i1.451

Authors

Krasimira Kirilova DEPARTMENT OF GEODESY, FACULTY OF TECHNICAL SCIENCES, KONSTANTIN PRESLAVSKY UNIVERSITY OF SHUMEN, SHUMEN 9712,115, UNIVERSITETSKA STR., E-MAIL: k.kirilova@shu.bg

DOI:

https://doi.org/10.46687/jsar.v29i1.451

Keywords:

Bouguer anomal, Mountainous area, EGM 2008, EIGEN-6C4

Abstract

The subject of the study is the analysis of the Bouguer gravity anomaly and its comparison by comparing the Bouguer anomaly values from the global geopotential models (GGMs) EGM 2008 and EIGEN-6C4 with data from interpolated values of 46,121 points for the Rila Mountain region, in which GNSS/leveling measurements have been carried out. The Bouguer anomaly map gives a good idea of the subsurface density [7]. In mountainous areas, topographic effects completely dominate local variations in the gravity field, so it is necessary to introduce local topographic reductions to remove this dependence on height.

Author Biography

Krasimira Kirilova, DEPARTMENT OF GEODESY, FACULTY OF TECHNICAL SCIENCES, KONSTANTIN PRESLAVSKY UNIVERSITY OF SHUMEN, SHUMEN 9712,115, UNIVERSITETSKA STR., E-MAIL: k.kirilova@shu.bg

DEPARTMENT OF GEODESY, FACULTY OF TECHNICAL SCIENCES, KONSTANTIN PRESLAVSKY UNIVERSITY OF SHUMEN, SHUMEN 9712,115, UNIVERSITETSKA STR., E-MAIL: k.kirilova@shu.bg

References

Dimanova, D., Geographical information systems and their application in various fields, Journal Scientific and Applied Research: Vol. 27 No. 1 (2024), DOI: https://doi.org/10.46687/jsar.v27i1.409.

Kirilova, K., Comparison of gravimetric data from the global geopotential models EGM 2008 and EIGEN-6C4 with data from classical gravimetric measurements, SocioBrains, Issue 71, July 2020, pp. 42-46, ISSN 2367-5721 (online), www.sociobrains.com, Bulgaria, 2020.

Kirilova, K., Yanchev, K. “Modeling the geoid in extreme regions of the territory of the Republic of Bulgaria - Rila Mountain” Journal of Geodesy, Cartography and Land Management, No. 1–2 2020, published by the Union of Surveyors and Land Managers in Bulgaria, pp. 3–20, ISSN: 0324–1610.

Mihaylov G. Analysis and evaluation of gravimetric data in Bulgaria, Dissertation. Sofia, 2011.

Strinski B. Satellite gravimetric data and their use for the territory of Bulgaria, Dissertation. Sofia, 2014.

Stoykov, Evgeni, 2019. "Preliminary processing of satellite measurements", Yearbook: Technical Sciences. Volume IX E, Shumen, University Publishing House "Bishop Konstantin Preslavski", 15 - 20 pp., ISSN: 1311-834X.

https://ngic.bg.

ANALYSIS AND COMPARISON OF GRAVITY ANOMALIES FROM THE GLOBAL GEOPOTENTIAL MODELS EGM 2008 AND EIGEN- 6C4 WITH AVAILABLE GRAVITY ANOMALIES IN AN EXTREMELY MOUNTAINOUS REGION OF THE TERRITORY OF SOUTHWEST BULGARIA - RILA MOUNTAIN