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The influence of viscoelastic properties of an optically sensitive epoxy material on the propagation of pressure waves in a rod was carried out. In the article of determination of the visco-elastic operator, the theoretical relations for the case of propagation of longitudinal waves are obtained based on the results of a photoelastic experiment. The noticeable difference between the experimental data and the calculation at the pulse end can be explained by the change in the propagation velocity of the Fourier decomposition component of the real impulse.

Ç òî÷êè çîðó ñó÷àñíî¿ íåë³í³éíî¿ ãåîô³çèêè íåîäíîð³äí³ñòü, íàÿâí³ñòü ³ºðàðõ³÷íî¿ áëîêîâî¿ ñòðóêòóðè, àí³çîòðîï³ÿ º âèçíà÷àëüíèìè âëàñòèâîñòÿìè ïðèðîäíîãî ñåðåäîâèùà, çîêðåìà çåì-íî¿ êîðè. Áàãàòî äîñÿãíåíü ñó÷àñíî¿ òåî𳿠ñàìîîðãàí³çàö³¿ â ãåîô³çèö³ ´ðóíòóþòüñÿ íà âaeå ñïîðóäaeóâàíèõ áàçîâèõ ìîäåëÿõ ñòðóêòóðîâàíèõ ñåðåäîâèù. Ñòðóêòóðà ãðຠêëþ÷îâó ðîëü â äè-íàì³ö³ çåìíî¿ êîðè, âîíà ìຠâåëèêå çíà÷åííÿ äëÿ âèíèêíåííÿ òåêòîí³÷íèõ íàïðóaeåíü, ¿õ ëîêà-ë³çàö³¿ ³ íàñòóïíèõ ïðîöåñ³â ¿õ âèâ³ëüíåííÿ. ßê ïîêàçàíî â ðîáîò³ [Ñòàðîñòåíêî è äð., 2001], òàê³ ñòðóêòóðîâàí³ ñåðåäîâèùà íåîáõ³äíî îïèñàòè íà ì³êðî-, ìåçî-³ ìàêðîð³âíÿõ ó ðàìêàõ ìîäåëåé âçàºìîä³þ÷èõ áëîê³â, ÿê³ äîçâîëÿþòü äîñòîâ³ðíî îïèñàòè òàê³ òåêòîí³÷í³ ïðîöåñè, ÿê ôîðìóâàííÿ ³ åâîëþö³ÿ ðèôòîâèõ îñàäîâèõ áàñåéí³â, ñòèñíåííÿ çåìíî¿ êîðè â çîíàõ ñóáäóêö³¿ [Âåíãðîâè÷ 2017], ñîëÿíó òåêòîí³êó [Âåíãðîâè÷, 2010]. Âèêîðèñòîâóâàí³ ï³äõîäè äëÿ ðîçðàõóíêó äèíàì³êè âåëè÷åçíîãî ÷èñëà âçàºìîä³þ÷èõ áëîê³â äóaeå çàòðàòí³. Çàïðîïîíîâàíî ìàòåìàòè÷íó ìîäåëü ïðóaeíî¿ ïîâåä³íêè ñòðóêòóðîâàíîãî ãåîô³çè÷íîãî ñåðåäîâèùà, ùî äîçâîëÿº â ïåâíèõ âèïàäêàõ îòðèìàòè àíàë³òè÷í³ çàëåaeíîñò³ ì³ae ¿¿ ïðóaeíèìè ïàðàìåòðàìè ³ ñòðóêòóðîþ. Ñåðåäîâèùå îïèñàíî â ïåðøîìó íàáëèaeåíí³ òâåðäîþ ìàòðèöåþ ç âêëþ÷åííÿì ãðàíóë ç ³íøèìè ðåîëîã³÷íèìè âëàñòèâîñòÿìè. Ïðåäñòàâëåí³ ÷èñåëüí³ (ìîäåëü ÌÑÅ) ³ àíàë³òè÷í³ ðîçðàõóíêè ïîë³â íàïðóaeåíü â ðåàëüíèõ ñåðåäîâèùàõ äëÿ ìîäåëåé ç âíóòð³øíüîþ ïåð³îäè÷íîþ ñòðóêòóðîþ, ïîð³âíÿííÿ ÿêèõ ï³äòâåðäaeóº øèðîê³ ìåae³ çàñòîñóâàííÿ çàïðîïîíîâàíî¿ àíàë³òè÷íî¿ ìîäåë³. Êëþ÷îâ³ ñëîâà: ïîëÿ íàïðóaeåíü, ãåîô³çè÷í³ ñåðåäîâèùà, ñòðóêòóðà, êîðà, ìîäóë³ ïðóaeíîñò³.