| Information for SJG as of February 1994 | |
|---|---|
| Station: San Juan, Puerto Rico | |
| Director: Dr. A. W. Green | Network Affiliation: IRIS/USGS - GSN & Project IDA |
| Address: Observer-in-Charge San Juan Observatory P O Box 936 Cayey, Puerto Rico 00737 |
Network Contact: Albuquerque Seismic Laboratory Building 10002 Kirtland AFB East Albuquerque, NM 87115 |
| Telephone: 787 738-2281 | Open Station: Yes Phone No 787 263-5934 |
| Fax: 787 738-8040 | Parent Organization: U. S. Geological Survey |
| Email: | |
| Coordinates: Latitude: 18.1117N Longitude: 66.1500W |
Elevation to Sensor: 457 Depth to Sensor: 3 |
| Geology: The vault is on interfingering lenticular units of volcanic breccia, conglomerate, sandstone and siltstone of cretaceous age. Seismometer piers are attached to decomposed rock of these materials. | |
| Vault Conditions: The seismometer vault is built into a hillside and has an overburden of approximately 3 meters. Piers are isolated from floor and connected to bedrock. Temperature and humidity in the vault are stable. There is a four lane highway located 1100 feet from the vault. Traffic is heavy, and includes large trucks. | |
| Site Description: N/A | |
| Addresses from which to obtain data. | |
| Station Instrumentation | |
|---|---|
| 1. Global Seismograph Network - GSN: IRIS-2 System [IU] | 26 May 1993 to Present |
| 2. Project IDA [ ID ] | June 1992 to Present |