Research interests


Overview

My research interest sticks to understanding the subsurface structure and state via visualization and monitoring, in other words, how we can see inside the Earth, what can be observed in what way, and what can be derived from what we saw.

The basic problem establishment is how we can approach underground as heterogeneous composite material by use of wave phenomena (mainly seismic wave) with finite frequency band. Under the condition, my research focuses on how we can recognize targets in underground by modeling, measurement, data analysis, signal extraction, and interpretation.

Themes

Subsurface imaging using seismic waves

Obtain subsurface structure images and properties using natural earthquakes (aftershocks, swarms, teleseisms) and artificial earthquakes (using active sources)

Accurately-Controlled, Routinely-Operated Signal System (ACROSS) and active monitoring in the Earth

ACROSS sends weak seismic signals that repeat exactly for a long time to monitor the variation of subsurface states using time-lapse measurement

Sensing subsurface (structure and physical properties, except heterogeneity, discontinuity, and fluid) using wave phenomena.

Students' Thesis


Seminars


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Toshiki Watanabe, EVRC, Nagoya University.
Last modified: Wed Dec 15 11:28:38 JST 2021