Identification Of Groundwater Aquifer Zones In Warehouse Buildings Based On Poisson’s Ratio And Shear Wave Velocity Values From Microtremor Method

Abstract

A research has been carried out to identify the location of the aquifer zone using the microtremor method. The research location is in the form of an unfinished warehouse with a groundwater well that has been made but is considered to have failed to produce water. The determination of the location of the former well uses resistivity methods. The acquisition of microtremor data was carried out at 20 measurement station locations on a land of about 70 m x 40 m with a recording duration of 10 minutes for each station and a sampling rate of 20 data per second. After inversion and gridding, the results of the existence of an aquifer zone at the location of the warehouse building which is a potential location for the location of the former well located on the left front of the warehouse from the entrance to the front of the warehouse building with a depth of 55-63 meters, the northern zone is relatively shallower. The types of aquifers obtained are confineded and semi-confined aquifers, with a relative thickness of "thin" which can be interpreted as a relatively small flow discharge or it can be concluded that no significant aquifer zone is obtained at that location.