1. Well, I'm supposed to monitor the seismographs.

2. Minor earthquakes have also been measured by seismographs and reported by residents.

3. Using seismographs, they're able to hear molten rock... flowing into the magma chamber.

4. Its earthquakes are well-located and their magnitudes found with closely-spaced modern seismographs.

5. There, earthquakes are continuously recorded by seismographs, and the wind velocities in the upper atmosphere are measured.

6. The geologic features of this active volcano are closely monitored with seismographs and strategically positioned video cameras.

7. The Geological Survey of Canada (GSC) operates a Canada-wide network of over 100 high-gain instruments, called seismographs, and over 60 low-gain or strong motion seismographs called accelerographs, that together make up the Canadian National Seismograph Network (CNSN).

8. Won- Young Kim told Chris Bollyn that their seismographs pick up underground explosions from a quarry # miles away

9. In addition, rapid communication and sophisticated seismographs have been keeping people posted on earthquakes as never before, even those who have never experienced the force of a tremor firsthand.

10. Geophysical data collection systems including environmental recorders, seismographs, accelerographs, digital seismic recorders, strong motion recorders, multi-channel digital recorders, blast recorders, vibration recorders and monitors, environmental monitoring digitizers, and authenticating digitizers