| Autor: |
Yuliyanto, Gatot, Yulianto, Tony, Harmoko, Udi, Nurwidyanto, M. Irham, Widada, Sugeng |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2023, Vol. 2738 Issue 1, p1-6, 6p |
| Abstrakt: |
The microtremor geophysical method in this study was used to search for groundwater aquifers using the Poisson ratio obtained from the inversion of microtremor data as a proxy for the presence of groundwater both on the surface and in deep groundwater aquifers. Because it is compact, mobile, and easy to operate, microtremor survey equipment can be used efficiently on a large scale for areas where groundwater aquifers are relatively difficult to obtain hydrogeologically. By taking measurements at 23 measurement locations with a sampling rate of 50 ms and a measurement area of about 350m x 350m, it is possible to model the Poisson ratio of the soil layer and the structure of the soil layer based on the shear wave velocity. In Nglekok, we found a layer of soil with a fairly high Poisson's ratio with values 0.34-0.47 to a depth of 50 m indicated as the location of the aquifer and a layer with a smaller Poisson's ratio of 0.29-0.31 at a depth of 130-200 m. Because it is composed of impermeable marl rock, the deep groundwater aquifer is only in the crushing zone, which functions as secondary porosity. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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