Published date: Mar 27 2024

Journal Title: KnE Life Sciences

Issue title: International Conference On Mathematics And Science Education (ICMScE 2022): Life Sciences

Pages: 309–316

DOI: 10.18502/kls.v8i1.15619

Yosi Dinar NugerahaniDepartment of Physics, Faculty of Science and Technology, State Islamic University of Sunan Gunung Djati Bandung

Firman Hadi MuhammadDepartment of Geophysical Engineering, Faculty of Mining and Petroleum Engineering, Bandung Institute of Technology, Indonesia

Reva Wiratamarevawiratama@outlook.comDepartment of Applied Geophysics, Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology in Krakow, Poland

Imamal MuttaqienDepartment of Physics, Faculty of Science and Technology, State Islamic University of Sunan Gunung Djati Bandung

Rena Denya AgustinaDepartment of Physics Education, Faculty of Tarbiyah and Teacher Training, State Islamic University of Sunan Gunung Djati Bandung

The imaging of shallow subsurface structures, weathered rock thickness and velocity propagation distribution of the rocks can be identified by seismic refraction. This method is one of the geophysical exploration methods utilizing refracted wave once it reaches the boundary of subsurface layer. In this research we used the generalized reciprocal method (GRM) as one of the robust processing methods in analyzing subsurface data. This method was chosen due to its accuracy in interpreting shallow subsurface layer with highly undulating refractors by determining time velocity analysis, XY optimum distances, and time depth analysis, then, the expected depth values can be achieved. The acquisition of data for this research was conducted using 13 geophones with forward and reverse sources, the data were then picked to get travel time values and inverted to obtain real geological setting of the earth. The results were interpreted as 2 layers, the first layer had a velocity distribution of 499.289 m/s which was identified as a weathered layer with a thickness of about 4.74 meters, whereas the second layer was interpreted as clay rock with velocity distribution of 1270.433 m/s with the thickness reached up to 16 meters.

Keywords: generalized reciprocal method, 2D seismic refraction

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