Station Book Navigation Bar (see bottom of page for alternate)

SJG - San Juan, Puerto Rico (photo)

  Information for SJG as of February 1994
Station: San Juan, Puerto Rico
Director: Dr. A. W. Green Network Affiliation: IRIS/USGS - GSN & Project IDA
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
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