Vrashchenie I Deformatsii Tektonicheskikh Plit

Izuchenie vnutriplitnykh smeshcheniy i deformatsiy imeet vazhnoe znachenie dlya ponimaniya prirody zemletryaseniy. Smeshchenie Amurskoy tektonicheskoy plity otnositel'no Evroaziatskoy i svyazannoe s etim yavleniem raskrytie Baykal'skogo rifta ranee izuchalos' na osnove geologicheskoy i seysmologicheskoy informatsii. Poyavlenie i aktivnoe primenenie metodov kosmicheskoy geodezii pozvolilo ispol'zovat' rezul'taty etikh izmereniy dlya polucheniya kolichestvennykh otsenok sovremennykh skorostey smeshcheniy i deformatsiy. Poluchennye parametry smeshcheniya punktov na razlichnykh kontinentakh dayut vozmozhnost' postroit' modeli dvizheniya plit na sfere, otsenit' effekty, svyazannye s seysmicheskim protsessom. V rezul'tatakh GPS izmereniy takzhe otrazhayutsya effekty razdvizheniya riftovoy vpadiny oz. Baykal i osobennosti postseysmicheskikh techeniy. Otsenka koseysmicheskikh 3D smeshcheniy dlya zemletryaseniy Baykal'skoy riftovoy sistemy (BRS) yavlyaetsya slozhnoy zadachey i provedena vpervye. Rezul'taty vysokotochnykh izmereniy smeshcheniy i deformatsiy razlichnymi metodami na otdel'nom poligone-observatorii pozvolyayut perekhodit' k postroeniyu modeli yavleniya, otrazhayushchey raspredelenie napryazheniy, smeshcheniy i deformatsiy zemnoy kory v zone vliyaniya zemletryaseniya.