TY - GEN
T1 - Application of A10 absolute gravimeter formonitoring land subsidence in Jakarta, Indonesia
AU - Fukuda, Yoichi
AU - Nishijima, Jun
AU - Sofyan, Yayan
AU - Taniguchi, Makoto
AU - Yusuf, Mahmud
AU - Abidin, Hasanuddin Z.
N1 - Funding Information:
This research was partially supported by JSPS KAKENHI Grant No. 20403007. The A10 absolute gravity measurements were supported by many colleagues and students of Kyoto University, Kyushu University, ITB, and other institutions. We thank all of those involved in this research.
Publisher Copyright:
© Springer International Publishing Switzerland 2016.
PY - 2017
Y1 - 2017
N2 - To investigate the cause of land subsidence occurring in Jakarta, Indonesia, we have conducted absolute gravity measurements near or at the existing GPS points in 2008, 2009, 2010, 2011 and 2013, by using a portable absolute gravimeter Micro-G LaCoste A10 serial number 017 (MGL A10-017). The A10 measurements, particularly those conducted before 2010, were adversely affected by the influence of the high-temperature and high-humidity climate, which caused problems with the ion vacuum pump, laser controls and unstable behavior of the data processing personal computer. Moreover, some of the gravity points were lost mainly due to construction work. For these reasons, the number of reliable gravity data was restricted. Nevertheless, the observed gravity changes along the northern coastal area of Jakarta showed an increase in gravity, which was consistent with the GPS results. The analysis of the height changes versus the gravity changes suggested that the subsidence was caused by soil compaction and/or groundwater level changes, which are likely connected with excessive groundwater extraction.
AB - To investigate the cause of land subsidence occurring in Jakarta, Indonesia, we have conducted absolute gravity measurements near or at the existing GPS points in 2008, 2009, 2010, 2011 and 2013, by using a portable absolute gravimeter Micro-G LaCoste A10 serial number 017 (MGL A10-017). The A10 measurements, particularly those conducted before 2010, were adversely affected by the influence of the high-temperature and high-humidity climate, which caused problems with the ion vacuum pump, laser controls and unstable behavior of the data processing personal computer. Moreover, some of the gravity points were lost mainly due to construction work. For these reasons, the number of reliable gravity data was restricted. Nevertheless, the observed gravity changes along the northern coastal area of Jakarta showed an increase in gravity, which was consistent with the GPS results. The analysis of the height changes versus the gravity changes suggested that the subsidence was caused by soil compaction and/or groundwater level changes, which are likely connected with excessive groundwater extraction.
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U2 - 10.1007/1345_2016_221
DO - 10.1007/1345_2016_221
M3 - Conference contribution
AN - SCOPUS:85009799947
SN - 9783319397672
T3 - International Association of Geodesy Symposia
SP - 127
EP - 134
BT - International Symposium on Geodesy for Earthquake and Natural Hazards (GENAH) - Proceedings of the International Symposium on Geodesy for Earthquake and Natural Hazards (GENAH)
A2 - Hashimoto, Manabu
PB - Springer Verlag
T2 - Proceedings of the International Symposium on Geodesy for Earthquake and Natural Hazards, GENAH 2014
Y2 - 22 July 2014 through 26 July 2014
ER -