Xiaohan Song Xiaohan Song
Email: xhsong@pku.edu.cn

Undergraduate Student
Department of Geophysics
Peking University

Summer Intern
Harvard Seismology Group
Department of Earth and Planetary Sciences
Harvard University

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Research Interests

My research interest lies in the analysis of the earthquakes and their secondary disasters, or more generally, earth catastrophes, using geophysics methods. Also, stories of the evolution of the earth is also appealing to me. I have been using the CAP method for the inversion of the focal mechanisms of the faulting around the Ordos block, China, under the instruction of professor Li Zhao, and I’m looking forward to extend my research from continental earthquakes to subduction zones, which are more seismically active. As a result, I’m pursuing my summer intern in professor Miaki Ishii’s group this summer (2020) focusing of the seismicity of the oblique subduction zones.

My current work focuses on the earthquake focal mechanisms near the oblique subduction zones. Since oblique subduction zones have both the trench perpendicular convergence and the trench parallel convergence, and the megathrust earthquakes on the thrust contact are usually pure thrust earthquakes, the trench parallel slip potential must have been released by the faulting elsewhere. However, It is observed that the continental strike-slip faults (e.g. the great Sumatra fault) has a slip rate much smaller than the trench’s parallel convergence rate. The unaccounted trench parallel slip potential is therefore, speculated to have caused the strike-slip earthquakes on the outer-rise (see the figure right). My tasks would be analyzing the spatial and temporal distribution of the earthquakes happened near different subduction zones and searching for the underlying regulations. I would welcome any comments and suggestions related to my current work.

strike-slip earthquakes in Sumatra


2017-present: B.S. School of Earth and Space Sciences, Peking University, Beijing, China.


Jul. 2017 - present, Summer Research Intern on the focal mechanisms near oblique subduction zones, Harvard Seismology Group, Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA.

May 2019 - present, Undergraduate Research on the Focal Mechanisms in Ordos China. Research Group of Prof. L. Zhao, Department of Geophysics, Peking University, Beijing, China.

Feb. 2018 - Sep. 2019, Undergraduate Research on the Segregation of Granular Materials. Research Group of Prof. G. Zhang, Department of Heavy Ion Physics, Peking University, Beijing, China.

Dec. 2017 - May 2018, Translating Deng’s Article about the Cause of 2008 Mw 7.9 Whenchan Earthquake. Instructed by Prof. S. Zhou, Department of Geophysics, Peking University, Beijing, China.


Song, X. and G. Zhang (2020). The role of the friction coefficients in the granular segregation in small systems, Powder Technology 372, 40-47.

Deng, K., S.Y. Zhou, R. Wang, R. Robinson, C. Zhao, and W.Z. Cheng (Translator: Song, X., 2018). Evidence that the 2008 Mw 7.9 Wenchang earthquake could not have been induced by the Zipingpu reservoir, Translated World Seismology 49(3), 183-194.

Department of Earth and Planetary Sciences / Harvard University / 20 Oxford Street / Cambridge / MA 02138 / U.S.A. / Telephone: +1 617 495 2350 / Fax: +1 617 496 1907 / Email: reilly@eps.harvard.edu