PENENTUAN STRUKTUR BAWAH PERMUKAAN DI TPA AIR SEBAKUL DENGAN MENGGUNAKAN METODE MASW

This research to examine the subsurface structure by using MASW (Multichannel Analysis of Surface Wave) in TPA Air Sebakul Kecamatan Selebar Bengkulu City. The research
was conducted as 6 tracks with 4 tracks in the area of waste and 2 trajectories outside garbage area. The Geophone has been set up with a geophone spacing of 1 meter and the distance to the source of the first geophone 4 meters. Seismic waveform data recorded using a digital seismograph and geophone 24 pieces with a frequency ≥ 4.5 Hz. Seismic data processing using Software winMASW 5.0 Professional to create a Rayleigh wave dispersion curves. From the research, Rayleigh wave has produce shear wave velocity (Vs), density and thickness. The first layer on the track 1-6 is a type of Sand Water Saturation, while the second layer is a type of Sandstone Porous, and the third layer is a type of Clay.