Dr Yuji Itoh, Earthquake Research Institute, University of Tokyo
McGill-EPS departmental Seminar FDA 232 – Friday, January 16, 2025 at 12:30 pm
Duration of slow earthquakes spans from sub-seconds to years with a significant observational gap in the middle. This gap (several hundreds of seconds to a few days) primarily originates from technical limitations of the geodetic and seismological instruments. Daily GPS position time series have been used to describe slow slip events (SSEs) because of its high precision of ~ mm, but they do not have access to the sub-daily dynamics of slip processes. Sub-daily GPS position time series may address this issue although they are known much noisier than daily positions with a precision of ~ cm. During the recent years, I have investigated the applicability of sub-daily GPS to improve our understanding of slow earthquake dynamics. In the talk, I will introduce current achievements and challenges I learned so far based on Itoh et al. (2022, Sci Rep) and Itoh et al. (2024, EarthArxiv).
Hybrid: Adams building (FDA) 232 (Gill Room, speaker will be in person) & Zoom
Pizza will be served!
Please join us at 12:30pm Eastern Time, Thursday January 16, 2025
---------------------------------------------
Bio: Yuji Itoh is an Assistant Professor at Earthquake Research Institute, University of Tokyo, Japan. He studies crustal deformation by mainly geodetic observation such as GNSS and modeling techniques. His primary research interest is geodynamic processes in the subduction zone such as seismic/aseismic slip of megathrust, rheological behavior of mantle and crust, and fault mechanics from the viewpoint of their various temporal behavior. He is also interested in improving geodetic techniques to capture these processes.
Sub-daily GPS to investigate slow earthquake processes: achievements and challenges