Analisa Perekaman Data Gempa dengan Menggunakan Strong Motion Accelerograph pada Bendungan

Abstract

Indonesia's location along the Ring of Fire makes it prone to earthquakes. Earthquakes are a natural phenomenon caused by human activity or natural events resulting from the Earth's rotation. The Strong Motion Accelerograph is a vibration monitoring method that can be applied to dams. This research used accelerometer equipment from GEOSIG. The purpose of this study was to analyze 24-hour accelerometer recordings at three locations (Crest, Foundation, and Free Field) at the dam. The results showed that peak acceleration values ​​were recorded at the three locations along the X, Y, and Z axes. The highest peak acceleration value was recorded at 0.0051g on the Y axis from the north, recorded between 00:43:07 and 01:43:07 WIB at the Foundation location. Peak acceleration values ​​recorded on March 18, 2023, over a 24-hour period ranged from 0.0008g to 0.0051g.