Structural geology and hazards of the Sumatran accretionary wedge

The marine geophysical data collected during the 2015 MEGA-TERA expedition provide a unique window into the near-trench structure of the Sumatran accretionary wedge. We are building detailed geological cross sections and reconstructions of the imaged faults and sedimentary units. From this, we will generate plausible scenarios for tsunamigenic shallow ruptures, which pose a significant hazard to coastal populations in Sumatra. We also propose to take advantage of the 2017 Mirage expedition to the Wharton Basin to collect several shallow cores in order to obtain critical age control on the recent evolution of the accretionary wedge.

Funding Sources: 

  • Earth Observatory of Singapore

Project Years: 

2017
2018
2019

EOS Team: 

Principal Investigator

Collaborators: 

Co-Investigator(s):

Kyle Bradley, Asian School of the Environment, Nanyang Technological University

Nugroho Hananto, Indonesian Institute of Sciences (LIPI)

Yanfang Qin, Institut de Physique du Globe de Paris