Determining the hydrothermal flow media using seismicity properties in Kaliulo geothermal field, Semarang, Central Java, Indonesia

Geothermal system requires specific geological condition that allow deep circulation of ground water to extract heat from the heat source. Faults and fractures play a major role in the localization and evolution of hydrothermal flow on several scales. The research aim was to obtain the permeability...

Full description

Saved in:
Bibliographic Details
Published in:Journal of physics. Conference series 2021-07, Vol.1943 (1), p.12031
Main Authors: Harmoko, U, Gernowo, R, Yuliyanto, G
Format: Article
Language:English
Subjects:
Earth surface
Ellipticity
Faults
Fractures
Groundwater
Hot springs
Physical properties
Rayleigh waves
Rock properties
Sand
Seismic response
Seismic waves
Seismicity
Soil permeability
Velocity distribution
Water circulation
Wave velocity
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Geothermal system requires specific geological condition that allow deep circulation of ground water to extract heat from the heat source. Faults and fractures play a major role in the localization and evolution of hydrothermal flow on several scales. The research aim was to obtain the permeability pattern of hydrothermal fluid base on response of micro seismic waves to subsurface structures. In one dimensional structure, average Horizontal to Vertical (H/V) spectral ratios can be assumed to measure the ellipticity of fundamental mode Rayleigh wave. Hence the shape of H/V ratios can be used to estimate the shear-wave velocity profile. The poisson’s ratio value of the hot spring corresponds to the physical properties of rock containing fluids. The thickness of the sand deposit and the soft layer indicated in the hot spring zone. We interpreted that we have warm springs in the research area comes up by the fracture or fault zone and permeable zone of sand soil. The mixing waters flow to the earth’s surface through the structure.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1943/1/012031