PENENTUAN KEDALAMAN BATUAN DASAR MENGGUNAKAN METODE HORIZONTAL TO VERTICAL SPECTRAL RATIO (HVSR) DI DAERAH PERKEBUNAN KELAPA SAWIT PT DARIA DHARMA PRATAMA KECAMATAN IPUH

PT Daria Dharma Pratama, located in Ipuh District, Mukomuko Regency, is
one of the companies engaged in palm oil processing. Root penetrability is one that
must be considered in oil palm production, therefore it is necessary to know the
depth of bedrock. This study aims to determine how the relationship of bedrock
depth to oil palm production in the PT DDP oil palm plantation area. This research
was conducted at 30 points scattered in the PT DDP oil palm plantation area. The
measurement data was then processed using geopsy software and inversed using
Hv-Inv Beta software. The inversion results produce bedrock depth values and
shear wave velocity curves. This study shows the value of bedrock depth in the study
area has a value ranging from 15.70 m - 78.13m. The area with the highest rock
depth is at point 5 with a depth of around 78.13 m with an oil palm production of
13.06 tons / ha. While the area that has the lowest bedrock depth value is at point
23 with a value of 15.70 m with oil palm production of 0.71 tons / ha.
Keywords: Bedrock depth, HVSR method, Microtremor