Seismic Network Operations

IU SJG

San Juan, Puerto Rico

IU SJG commences operations on: 1993,146

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Host: US Geological Survey
Latitude: 18.109
Longitude: -66.15
Elevation: 420
Datalogger: Q330
Broadband: STS-1VBB_w/E300
Accelerometer: FBA_ES-T_EpiSensor_Accelerometer
Telemetry Status at the NEIC: Last Data In Less Than 10 Minutes
Station Photo Station Photo Station Photo 

Vault Condition: 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 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.

Location CodeChannel CodeInstrumentFlagsSample RateDipAzimuthDepth
20LNZKinemetrics FBA ES-T EpiSensor AccelerometerCG1.00-90.000.000.00
20HNZKinemetrics FBA ES-T EpiSensor AccelerometerTG100.00-90.000.000.00
10VHZStreckeisen STS-2 High-gainCG0.10-90.000.000.00
10LHZStreckeisen STS-2 High-gainCG1.00-90.000.000.00
10HHZStreckeisen STS-2 High-gainTG100.00-90.000.000.00
10BHZStreckeisen STS-2 High-gainCG40.00-90.000.000.00
00VHZStreckeisen STS-1VBB w/E300CG0.10-90.000.000.00
00LHZStreckeisen STS-1VBB w/E300CG1.00-90.000.000.00
00BHZStreckeisen STS-1VBB w/E300CG20.00-90.000.000.00
31LDOCI/PAS pressure sensorCW1.000.000.000.00
20LN2Kinemetrics FBA ES-T EpiSensor AccelerometerCG1.000.0090.000.00
20LN1Kinemetrics FBA ES-T EpiSensor AccelerometerCG1.000.000.000.00
20HN2Kinemetrics FBA ES-T EpiSensor AccelerometerTG100.000.0090.000.00
20HN1Kinemetrics FBA ES-T EpiSensor AccelerometerTG100.000.000.000.00
10VMWStreckeisen STS-2 High-gainCH0.100.000.000.00
10VMVStreckeisen STS-2 High-gainCH0.100.000.000.00
10VMUStreckeisen STS-2 High-gainCH0.100.000.000.00
10VH2Streckeisen STS-2 High-gainCG0.100.0090.000.00
10VH1Streckeisen STS-2 High-gainCG0.100.000.000.00
10LH2Streckeisen STS-2 High-gainCG1.000.0090.000.00
10LH1Streckeisen STS-2 High-gainCG1.000.000.000.00
10HH2Streckeisen STS-2 High-gainTG100.000.0090.000.00
10HH1Streckeisen STS-2 High-gainTG100.000.000.000.00
10BH2Streckeisen STS-2 High-gainCG40.000.0090.000.00
10BH1Streckeisen STS-2 High-gainCG40.000.000.000.00
00VMZStreckeisen STS-1VBB w/E300CH0.100.000.000.00
00VM2Streckeisen STS-1VBB w/E300CH0.100.000.000.00
00VM1Streckeisen STS-1VBB w/E300CH0.100.000.000.00
00VH2Streckeisen STS-1VBB w/E300CG0.100.0090.000.00
00VH1Streckeisen STS-1VBB w/E300CG0.100.000.000.00
00LH2Streckeisen STS-1VBB w/E300CG1.000.0090.000.00
00LH1Streckeisen STS-1VBB w/E300CG1.000.000.000.00
00BH2Streckeisen STS-1VBB w/E300CG20.000.0090.000.00
00BH1Streckeisen STS-1VBB w/E300CG20.000.000.000.00
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  1. 2014-01-06
    New Episensor installed
  2. 2012-01-01
    LNZ Episensor component is noisy.
  3. 2010-04-22
    Upgraded to Q330 digitizer.