A general earthquake-observation system (GEOS)
Bulletin of the Seismological Society of America
Links
- More Information:
- Download citation as: RIS | Dublin Core
Abstract
Microprocessor technology has permitted the development of a General Earthquake-Observation System (GEOS) useful for most seismic applications. Central-processing-unit control via robust software of system functions that are isolated on hardware modules permits field adaptability of the system to a wide variety of active and passive seismic experiments and straightforward modification for incorporation of improvements in technology. Various laboratory tests and numerous deployments of a set of the systems in the field have confirmed design goals, including: wide linear dynamic range (16 bit/96 dB); broad bandwidth (36 hr to 600 Hz; greater than 36 hr available); selectable sensor-type (accelerometer, seismometer, dilatometer); selectable channels (1 to 6); selectable record mode (continuous, preset, trigger); large data capacity (1. 4 to 60 Mbytes); selectable time standard (WWVB, master, manual); automatic self-calibration; simple field operation; full capability to adapt system in the field to a wide variety of experiments; low power; portability; and modest costs. System design goals for a microcomputer-controlled system with modular software and hardware components as implemented on the GEOS are presented. The systems have been deployed for 15 experiments, including: studies of near-source strong motion; high-frequency microearthquakes; crustal structure; down-hole wave propagation; teleseismicity; and earth-tidal strains.
Suggested Citation
Borcherdt, R., Fletcher, J.B., Jensen, E., Maxwell, G., VanSchaack, J., Warrick, R., Cranswick, E., Johnston, M., McClearn, R., 1985, A general earthquake-observation system (GEOS): Bulletin of the Seismological Society of America, v. 75, no. 6, p. 1783-1825, https://doi.org/10.1785/BSSA0750061783.
ISSN: 1943-3573 (online)
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | A general earthquake-observation system (GEOS) |
| Series title | Bulletin of the Seismological Society of America |
| DOI | 10.1785/BSSA0750061783 |
| Volume | 75 |
| Issue | 6 |
| Year Published | 1985 |
| Language | English |
| Publisher | Seismological Society of America |
| Contributing office(s) | Earthquake Hazards Program |
| Description | 43 p. |
| First page | 1783 |
| Last page | 1825 |