Imaging High-Resolution 3d Shallow Crustal Structure in Western Taiwan by Using Dense Seismic Array(3/3)

Project Details

Description

Damaged earthquakes have occurred frequently in western Taiwan and several active fault zones are responsible for that. In this region, those fault zones can be grouped into two systems based on two tectonic stages that Taiwan has been through: the normal fault system by the rifted continental margin and the fold-and-thrust belts by mountain building process. Due to the interaction between these two fault systems, the geometries of fault zones are complicated and many are blind faults. In the past two years, my research team has successfully deployed two dense seismic arrays to look for the subsurface structures. Based on this we propose a three-year research proposal to carry out dense seismic array deployments to have comprehensive results of the subsurface images and surface deformation. For the field experiments, we will deploy 6 seismic arrays and each array has around 80 stations (5-6 km station spacing) and records continuously for 3 months to cover the whole western Taiwan in 3 years. The shallow shear wave velocity, one of the results obtained from dense seismic arrays is important for the peak ground motion simulation for earthquake engineering. Also, we will apply autocorrelation of ambient seismic noise for each seismic station to retrieve reflectors right beneath the seismic stations.
StatusFinished
Effective start/end date1/08/2131/01/22

UN Sustainable Development Goals

In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This project contributes towards the following SDG(s):

  • SDG 15 - Life on Land

Keywords

  • Blind fault
  • dense seismic array
  • shallow shear wave velocity structure
  • autocorrelation of ambient seismic noise

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