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Browsing by Subject "underground erosion"

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  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Zagrożenia wodne północnej granicy OG KS Wieliczka w obrazie czasowych zmian anomalii siły ciężkości
    (Wydawnictwa AGH, 2008) Madej, Janusz; Porzucek, Sławomir; Jakiel, Krzysztof
    Detailed gravity survey have been led on the land near Mina crosscut since 1992. Interpretation of Bouguer anomalies allowed to expand geological construction in this area. Analysis of temporary gravity changes within north outskirts OG KS Wieliczka provided the information about dynamic effects occurrences in Wieliczka's rockmass in 1992-2007. The migration of subsurface waters toward the salt deposits is a source of suffosion and underground erosion process in considerable parts of the rockmass. The centuries-old mining in the central part of the deposit, destroying its north border (gypstun-clay cap rock) and the flow of subsurface waters expand degradation in this area. In the area of the north border of the salt deposit there are noticeable zones connected with dehydration and condensation processes which can be seen in distribution of anomalies temporal gravity changes. It is often possible to observe zones of anomalies in the temporal gravity changes before decreases of the surface could be measurable.