The Estimation of the Influence of Current Earth Surface Movements on the Levelling Networks Dabartini em s plutos judesi takos vertinimas eksploatuojant niveliacijos tinklus

Horizontal and vertical movements are a typical feature of the Earth surface. The spatial location of geodesic marks constantly changes because of the Earth surface movement. The exactness of geodesic networks decreases as geodesic marks’ location changes in the course of time. The vertical movement of the Earth surface influences the alternation of the exactness of levelling networks. It is suggested to apply gradient plans of vertical Earth surface movement speed in order to evaluate the influence of the present vertical Earth surface movement upon the alternation of the exactness of levelling networks during the course of time. This work presents the methodology of creating and applying vertical movement speed gradient plans in order to evaluate the influence of the Earth surface movement while exploiting levelling networks. The evaluation of vertical Earth surface movement influence while exploiting Lithuanian levelling networks has been carried out. Article in Lithuanian Nagrin jami em s pavir iui būdingi horizontalieji ir vertikalieji judesiai. D l em s pavir iaus judesi einant laikui kei iasi geodezini enkl erdvin pad tis. Kei iantis geodezini enkl pad iai, einant laikui, ma ja geodezini tinkl tikslumas. Niveliacijos tinkl tikslumo kaitai tak turi vertikalieji em s pavir iaus judesiai. Dabartini vertikali j em s pavir iaus judesi tak niveliacijos tinklo tikslumo kaitai vertinti siūloma taikyti vertikali j em s pavir iaus judesi grei i gradient planus. Pateikiama vertikali j judesi grei i gradient plan sudarymo ir j taikymo em s pavir iaus judesi takai vertinti eksploatuojant niveliacijos tinklus metodika. Atliktas vertikali j em s pavir iaus judesi takos vertinimas eksploatuojant Lietuvos niveliacijos tinklus. Straipsis lietuvi kalba