LONGMENSHAN

Structure and Seismicity in the vicinity of the Longmenshan fault

The main aim of the Longmenshan project is to study the structure and seismicity in the vicinity of the Longmenshan fault, which forms part of the eastern border of the Tibet plateau in China. The Longmenshan fault hosted a Mw=7.9 earthquake in May 2008. A deep drillhole is planned about 40 km northeast of the epicentre of the earthquake. In June 2012 an array of 80 broadband seismic stations, including 50 from GIPP, was deployed covering the region of the epicentre of the Mw=7.9 earthquake in May 2008 and the site of the planned deep drillhole. It is planned that the array will record until November 2013.

Time Frame

  • June 2012 – November 2013

Funding

  • China

Principal Investigators

  • J. Mechie (GFZ Potsdam)
  • Qian Hui (CAGS, Beijing)

Cooperations

  • Chinese Academy of Geological Sciences, Ministry of Land and Resources, Beijing, China

Methods & Equipment

  • passive sources seismological array
  • 50 3-channel Omnirecs Data-Cube3 recorders with 50 Trillium Compact broadband seismometers from GIPP, 30 Chinese broadband systems.

Publications

  • Qian, H., Mechie, J., Li, H., Xue, G., Su, H. and Cui, X., 2016. An approach to jointly invert hypocenters and 1D velocity structure and its application to the Lushan earthquake series. J. Seismol., 20, 213-232, doi:10.1007/s10950-015-9521-0.
  • Qian, H., Mechie, J., Li, H., Xue, G., Su, H. and Cui, X., 2018. Structure of the crust and mantle down to 700 km depth beneath the Longmenshan from P receiver functions. Tectonics, 37, 1688-1708, doi:10.1029/2017TC004726.
  • Feng, M., Qian, H., Mechie, J., An, M., Li, H., Xue, G., Su., H. and Cui, X., 2021. Crustal seismogenic structures and deformation styles along the Longmen Shan Fault belt in the eastern Tibetan Plateau inferred from ambient noise tomography. Tectonophysics, 798, 228689, doi:10.1016/j.tecto.2020.228689.
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