S-net | ETMC | DONET | |
---|---|---|---|
Type of observation system | In-line | In-line | Node |
Digging around station or buried when installed | Most stations installed at water depths of < 1500 m | No | Dependent on site and period (Table 1) |
Mounted equipment to enhance coupling with seafloor | No | Yes | Yes |
Gimbal system | No | Yes | Yes |
Used seismic sensor | Velocity seismometer (15 Hz) | Velocity seismometer (1 Hz) | Broadband seismometer |