Open AccessMicrogravity method to monitor subsidence in Kota Lama area Semarang
Author(s) -
Supriyadi Supriyadi,
Khumaedi,
. Sugiyanto,
Jefta Heparona
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1567/3/032068
Subject(s) - anomaly (physics) , subsidence , geology , lama , geodesy , ground subsidence , geomorphology , geotechnical engineering , physics , medicine , condensed matter physics , structural basin , psychiatry , copd
The purpose of this study was to monitor the subsidence that occurred in the Kota Lama. The method used is the micro gravity method. Measurements were carried out 2 times in the period May and September 2017. The anomalous data obtained time lapse microgravity anomaly which were the weight difference between the period of September and May. This anomalous data still contains anomalous sources of groundwater leve changes which are then corrected with rainfall data for that time interval. Finally anomaly data were obtained which were the target of the study in the form of microgravity anomaly data due to subsidence. After being converted with a constant free air correction resulted in a maximum subsidence of 0.3 cm or 3 mm occurred in the north and south of the Kota Lama.