Dr. Itzhak Lior

 

The research group focuses on the relationship between processes occurring at the earthquake source, ground vibrations, and the damage they cause, as well as analyzing ground noise from various sources. The group covers diverse research directions, including developing methods for assessing earthquake damage and early warning, understanding parameters controlling the earthquake source and magnitude, and using spatial seismic noise to understand subsurface structure and geology. The research utilizes earthquake data recorded through seismometers, accelerometers, and optical fibers using Distributed Acoustic Sensing (DAS). Optical fibers allow for extremely high-resolution ground vibration measurements in time and space, enabling a deeper understanding of seismic waves, earthquake sources, and the subsurface structure through which these waves pass.

The group collaborates with external companies such as Prisma Photonics and Mekorot Water Company to perform earthquake measurements using various optical fibers deployed in Israel. Additionally, some research is conducted in collaboration with researchers from other universities and the Geological Survey of Israel.

The work in the group involves seismic data analysis in time and space, developing various mathematical models and adapting them to observations, and field data collection.

 

Research Methods

• Analyzing seismic data, time and space series, and extracting significant parameters from the data.

• Developing theoretical, empirical, and statistical models.

• Developing algorithms for real-time seismic data analysis as part of earthquake warning system development.

• Analyzing seismic noise through correlations and inversion methods to develop models describing subsurface structure.

• Big data analysis using computer clusters

Research Students

Shahar Ben Zeev (Post-doc) 

Matty Sharon (PhD Student) 

Gil Noy (MSc Student) 

Linoy Greenberg  (MSc Student) 

Avinoam Hershler  (MSc Student) 

Contact Information

Itzhak Lior | itzhak.lior@mail.huji.ac.il | Room 14 South