Modeling response Time Lapse Microgravity Vertical Gradient (TLMVG) anomaly due to fluid volume changes of sub surface and its implementation in Kota Lama Semarang

Modeling of time lapse microgravity anomaly have done. The modelling was done with two ways are first gravimetri position on the earth's surface, and second position at a height of 25 cm from it. The first model shows for 30 % rock porosity than any change in groundwater within depth 1 meter ca...

Full description

Saved in:
Bibliographic Details
Published in:Journal of physics. Conference series 2019-10, Vol.1321 (2), p.22003
Main Authors: Supriyadi, Khumaedi, Sugiyanto, Ikhsan, M, Sarkowi
Format: Article
Language:English
Subjects:
Earth surface
Groundwater
Groundwater levels
Microgravity
Modelling
Physics
Reduction
Response time
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Modeling of time lapse microgravity anomaly have done. The modelling was done with two ways are first gravimetri position on the earth's surface, and second position at a height of 25 cm from it. The first model shows for 30 % rock porosity than any change in groundwater within depth 1 meter causes gravity change 12,579 μGal. The second model show that reduction of groundwater wil reduce time lapse microgravity vertical gradient (TLMVG) anomaly. Reduction of groundwater will provide TLMVG negative value (-) and reverse groundwater give positive value (+). It was concluded that in the Kota Lama during the range of March to September there was no subsidence, but there was a decrease in groundwater level of 1.449 m
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1321/2/022003