ANALISIS TIME-SERIES INSAR (INTERFEROMETRIC SYNTHETIC APERTURE RADAR) UNTUK PEMANTAUAN DEFORMASI DI PORONG, SIDOARJO TAHUN 2014 - 2018
On May 29, 2006, there has been a burst of fluid (steam/water) and solid mud in Porong, Sidoarjo. Some researchers refer to the phenomenon in the area as "LUSI" hot mud. Experts classify this incident as "Mud Volcano or Mud Dome". Based on previous research, until now, this ph...
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| Format: | Final Project |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/55055 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | On May 29, 2006, there has been a burst of fluid (steam/water) and solid mud in
Porong, Sidoarjo. Some researchers refer to the phenomenon in the area as "LUSI"
hot mud. Experts classify this incident as "Mud Volcano or Mud Dome". Based on
previous research, until now, this phenomenon is presumed to have caused land
subsidence to occur. By using remote sensing satellites, it is possible to observe the
deformation of the earth's surface on a wide scale at any time depending on the
available data. Widely observed deformation (area-based), in recent years, has begun
to be applied and developed by researchers. This observation technique is also
known as InSAR (Interferometric Synthetic Aperture Radar). InSAR method is a
geodetic method that utilizes SAR satellite images by interpreting two or more
images so that the measurement of the deformation phase values can be carried
out efficiently. The purpose of this study is to determine the deformation value in the
line-of-sight direction in Porong District, Sidoarjo in 2014 - 2018 by utilizing the
ALOS-2 SAR image. Observations are made by 'stacking' interferograms (stacking
images) which are formed from 2-pass differential interferometry so that the
deformation value can be defined in time series. The value of land subsidence that
occurs at the center of the burst reaches 0.2 m/year within 5 years of observation.
Meanwhile, land subsidence is proven to have a strong correlation with the volume
of the LUSI burst, with a correlation coefficient of -0.9. In this observation, an
observation is made on a plot that passes through the center of the burst. The results
show that at the center of the burst a deformation pattern is formed which can be
defined in a certain deformation model. |
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