Vertical deformation model on postseismic phase using exponential and logarithmic function based on InSAR

Yusiyanti, Irma and Kalbuadi Prajardi, Tattyana Wening and Saputri, Yofita Indah and Pratama, Cecep (2023) Vertical deformation model on postseismic phase using exponential and logarithmic function based on InSAR. Geodesy and Geodynamics, 14 (4). 392 – 400. ISSN 16749847

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Abstract

The Palu MW7.4 earthquake occurred on September 28, 2018, with the epicenter at 119.86°, 0.72°. The severe shaking caused severe damage in Central Sulawesi, especially in Palu. We conducted a postseismic deformation study to determine the deformation pattern and reduce future earthquakes' impact. Interferometric Synthetic Aperture Radar (InSAR) data were processed using LiCSBAS to get the time series. The time series data were fitted to exponential and logarithmic functions to determine the mechanism of postseismic deformation. The exponential model identified the influence of the viscoelastic mechanism, and the logarithm identified the afterslip mechanism. The Palu earthquake was fitted to logarithmic and exponential, but the logarithmic was more significant than an exponential function. Afterslip mechanism predominates, and viscoelastic mechanisms play a minor role in this postseismic deformation. © 2023 Editorial office of Geodesy and Geodynamics

Item Type: Article
Additional Information: Cited by: 4; All Open Access, Gold Open Access
Uncontrolled Keywords: Central Sulawesi; Indonesia; Palu; Exponential functions; Synthetic aperture radar; Time series; Viscoelasticity; Deformation modeling; Exponentials; Interferometric synthetic aperture radars; Logarithmic; Logarithmic functions; Physical mechanism; Postseismic; Postseismic deformation; Vertical deformation; Viscoelastics; deformation mechanism; earthquake magnitude; postseismic process; synthetic aperture radar; time series analysis; vertical seismic profile; viscoelasticity; Earthquakes
Subjects: Q Science > QE Geology
Divisions: Faculty of Engineering > Geodetic Engineering Department
Depositing User: Sri JUNANDI
Date Deposited: 06 Nov 2024 07:00
Last Modified: 06 Nov 2024 07:00
URI: https://ir.lib.ugm.ac.id/id/eprint/10798

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