Yingjie Yang

Biography

I am an observational seismologist at the department of Earth and Planetary of Sciences, Macquarie University in Sydney, Australia. I got my Bachelor of Sciences from University of Science and Technology of China in 2000. My PhD studies took place in Brown University majoring in Geophysics/Seismology during 2000-2005. Afterwards, I took research associate and senior research associate positions at University of Colorado at Boulder. In 2010, I moved to Macquarie University as a lecturer. Now I am a Associate Professor/ARC Future Fellow.

Research Interest

Ambient noise surface wave tomography: The method is based on the extraction of surface-wave Green functions from cross-correlating sequences of ambient or background seismic noise that from the random seismic wavefield. Dispersion measurements based on ambient noise have distinct advantage over traditional earthquake-based measurements, including extension to the band of measurements to shorter periods, generating information between any arbitrary station pairs , and shrinking lateral sensitivity kernels. The consequence is that surface wave tomography based on the cross-correlation of ambient noise promises significantly lateral and vertical resolution relative to traditional methods of surface wave tomography. Finite-frequency surface wave tomography: Evaluate 2-D sensitivity kernel validity in predicting surface wave filed variation when propagating over a heterogeneous structure using numerical simulation. Develop a regional surface wave tomography method based on 2-D sensitivity kernels. Using normal mode Rayleigh wave data filtered and windowed from seismograms recorded at the TriNet network in southern California, I invert for phase velocities at periods from 25 to 143 s. The phase velocities are further inverted for shear wave velocity structure at depth range from surface to 250 km.