Next-generation seismic monitoring system (IMAGE)
Caption
This schematic image shows what a next-generation system for continuous monitoring of underground geothermal and sequestered carbon dioxide reservoirs could look like using a low-cost approach developed by researchers at Kyushu University. Such systems are critical for monitoring reservoirs in real time for leaks and changes to support the expansion of carbon capture and storage and geothermal energy development projects. Key for the system are small seismic sources developed by the researchers that generate accurately timed vibrations over a wide range of frequencies. Through distributed acoustic sensing (DAS), fiber-optic cables detect the seismic signals, which can be stacked to improve signal-to-noise ratio, allowing the calculation of ground properties for monitoring geothermal and carbon dioxide reservoirs. The system could also be combined with traditional seismometers and autonomous surface vehicles (ASVs) that produce acoustic waves offshore to further expand the monitored region.
Credit
Takeshi Tsuji et al., Scientific Reports 11, 19120 (2021). CC BY (https://creativecommons.org/licenses/by/4.0/)
Usage Restrictions
Credit must be given to the creator.
License
CC BY