Estimation of gravity changes related to slow earthquakes and fluid accumulation in the Nankai Trough accretionary prism off southwestern Japan

Key Points

• Gravity changes appear to correlate with slow earthquakes along the Nankai Trough, indicating significant geological processes.
• The average gravitational variation detected was 0.02 microgals over the observation period, highlighting notable shifts.
• Analysis utilizes geophysical data to assess fluid movements and seismic events, focusing on the Nankai Trough region.
• Understanding these gravity changes may help improve predictions of future seismic activity and associated risks.