Study of the Depth of Groundwater Layers Using the Ordinary Block Kriging Method and It’s Effect on the Occurrence of Liquefaction in the Petobo Area of South Palu, Indonesia

DOI

10.2991/978-94-6463-520-1_10How to use a DOI?

Keywords

Liquefaction; Block Kriging; Geoelectric Method

Abstract

Petobo as the location of the research area is part of the city of Palu in Indonesia, namely in the South Palu sub-district area. The topographic profile of this region is a flat area, most of which is used as rice fields and some have developed into residential areas. In Palu city planning. Before the earthquake occurred on September 28 2018, this area would be developed into the future development of the city of Palu. After the earthquake and liquefaction, the Central government designated this area as a red category area which indicates that it is unsafe for settlement due to liquefaction that occurred during the earthquake on September 28 2018. We want to use the Block Kriging method together with the Geophysical method, to determine the composition of the subsurface soil that caused liquefaction in the 2018 earthquake. The Ordinary Kriging method found deep groundwater at a depth of 59.70 m, while the Geoelectric method after the earthquake found deep groundwater at a depth of 66.67 m, giving almost the same results. The depth of groundwater near the surface is around 14.7 m, while the Geoelectric Method before the earthquake and liquefaction found 15 m. Petobo’s position, which is lower than Biromaru and the Gumbasa Dam water channel, is one of the causes of liquefaction.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Nur’eni Nur’eni
AU  - Jamidun Jamidun
AU  - Andi Harismahyanti
AU  - Nurul Fazharia
PY  - 2024
DA  - 2024/12/05
TI  - Study of the Depth of Groundwater Layers Using the Ordinary Block Kriging Method and It’s Effect on the Occurrence of Liquefaction in the Petobo Area of South Palu, Indonesia
BT  - Proceedings of the 5th International Seminar on Science and Technology (ISST 2023)
PB  - Atlantis Press
SP  - 59
EP  - 63
SN  - 2352-541X
UR  - https://doi.org/10.2991/978-94-6463-520-1_10
DO  - 10.2991/978-94-6463-520-1_10
ID  - Nur’eni2024
ER  -