Investigation the Effective Elastic Thickness (Te) of the Lithosphere in Taiwan and South China Sea

Project Details

Description

In oceanic regions the effective elastic thickness (EET or Te) of the lithosphere is generally estimated from gravity anomaly and topography and approximately corresponds to the depth of the 450°C isotherm. However, in the continents the exact physical meaning of Te is unclear, and a number of properties are important in its control. From onland southern Taiwan to the northern Manila subduction zone, the properties of the subducting Eurasian plate are very complicated, which includes a continental part in the north and an oceanic part in the south. The Taiwan Integrated Geodynamic Research program (TAIGER) collected three wide-angle and reflection seismic transects (T1, T2, and T4A) across the northern Manila subduction zone and southern Taiwan that provide well constraints on the slab geometry. Thus, unlike previous studies, in this study, we try to adopt a better way using synthetic flexure to fit the observed slab which can actually reflect the deformation of the plate. And we expect that the estimates result can give us some information about the compositions of the Eurasian plate. On the other hand, the ages of the oceanic crust in the South China Sea (SCS) were well known. To estimate the Te of the SCS lithosphere could let us better understand the relation between Te and the ages of the oceanic crust.
StatusFinished
Effective start/end date1/08/1831/07/19

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 14 - Life Below Water
  • SDG 17 - Partnerships for the Goals

Keywords

  • effective elastic thickness
  • lithosphere
  • flexure
  • gravity

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