Estimation of the generalized characteristics of spatial movements of the Earth crust using the data of GPS measurements/ Erdviniu Zemes plutos judesiu apibendrintuju charakteristiku nustatymas pagal GPS matavimu duomenis

• Published in: Geodezija ir kartografija 2009-12, Vol.35 (4), p.126
• Main Authors: Zakarevicius, Algimantas, Aksamitauskas, Vladislovas Ceslovas, Stanionis, Arminas, Levinskaite, Daiva
• Format: Article
• Language: English
• Subjects: Crust; Earth; Earth movements; Global Positioning System; Measurement
• ISSN: 1392-1541
• DOI: 10.3846/1392-1541.2009.35.126-130

The generalized characteristics of the spatial (3-D) Earth crust movements using data on GPS measurements were assessed in the region of Ignalina Nuclear Power Plant applying the methodology of tensor analysis. Changes in the principal tectonic stresses were found using a trigonometric method. The new data on the generalized characteristics of the spatial Earth crust movements such as shifts in the directions of the axes of coordinates, the turn of block structure, relative linear and shear strains, changes in normal, tangential and principal tectonic stresses were calculated. The generalized relative strains may vary in the range between -0.012 * [10.sup.-6] and -0.760 * [10.sup.-6]. Changes in stresses may vary in the range between -0.003 MPa and -0.059 MPa. It was established that the values of relative strains and changes in stresses in the region of Ignalina Nuclear Power Plant were of a negative sign, i.e. the territory was affected by general tectonic pressure. Erdviniu Zemes plutos judesiu apibendrintosios charakteristikos pagal GPS matavimu duomenis Ignalinos atomines elektrines rajone ivertintos taikant tenzorines analizes metodika. Svarbiausiuju tektoniniu itempiu pokyciai nustatyti trigonometriniu metodu. Apskaiciuoti nauji erdviniu Zemes plutos judesiu apibendrintuju charakteristiku duomenys--poslinkiai koordinaciu asiu kryptimis; blokines strukturos posukis; santykines linijines bei slyties deformacijos; normaliniu, tangentiniu bei svarbiausiuju tektoniniu itempiu pokyciai. Apibendrintosios santykines deformacijos kinta nuo -0,012 * [10.sup.-6] iki -0,760 * [10.sup.-6] itempiai svyruoja nuo -0,003 MPa iki -0,059 MPa. Nustatyta, kad santykiniu deformaciju ir itempiu pokyciu reiksmes visame nagrinejamame Ignalinos atomines elektrines rajone yra neigiamo zenklo, t. y. teritorija yra veikiama bendrojo tektoninio spaudimo. Reiksminiai zodziai: atvirkstinis Huko desnis, apibendrintieji erdviniu itempiu pokyciai, apibendrintosios erdvines Zemes plutos deformacijos, GPS.