caa a22 4500 475737296 CHVBK 20180406123450.0 cr unu---uuuuu 170329e20000201xx s 000 0 eng 10.1007/s001900050003 doi (NATIONALLICENCE)springer-10.1007/s001900050003 Numerical modeling of gravitational field lines - the effect of mass attraction on horizontal coordinates [Elektronische Daten] [G. Papp, J. Benedek] Abstract.: There are two basic types of geodetic projections by which the points located on the Earth's surface can be projected onto a reference ellipsoid. Because of the different principles of Helmert's and Pizzetti's methods two sets of horizontal and vertical coordinates are obtained for the same set of surface points. The difference is investigated in terms of offsets of horizontal coordinates. For an estimation of the offsets the field lines going through topographic masses are determined by three different numerical methods in 'sflat Earth approximation' using a volume element model of the density distribution of the lithosphere in a part of central Europe. The maximum horizontal offset reaches 20 cm on the investigated area at the level of the geoid. Springer-Verlag Berlin Heidelberg, 2000 Key words: Numerical modeling - Field lines - Volume density model nationallicence Papp G. Geodetic and Geophysical Research Institute, H-9401 Sopron, Pf. 5, Hungary e-mail: papp@ggki.hu; Tel.: +36 99 314 290; Fax: +36 99 313 267, HU aut Benedek J. Geodetic and Geophysical Research Institute, H-9401 Sopron, Pf. 5, Hungary e-mail: papp@ggki.hu; Tel.: +36 99 314 290; Fax: +36 99 313 267, HU aut https://doi.org/10.1007/s001900050003 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s001900050003 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Papp G. Geodetic and Geophysical Research Institute, H-9401 Sopron, Pf. 5, Hungary e-mail: papp@ggki.hu; Tel.: +36 99 314 290; Fax: +36 99 313 267, HU aut NATIONALLICENCE 700 1- Benedek J. Geodetic and Geophysical Research Institute, H-9401 Sopron, Pf. 5, Hungary e-mail: papp@ggki.hu; Tel.: +36 99 314 290; Fax: +36 99 313 267, HU aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer