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Location Summary

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Context

Networks (1 time spans)

NC 1966-01-01 2599-12-31

Station Epochs (1 time spans)

GRT 1975-06-26 2599-12-31

NC : GRT (1975-06-26 - 3000-01-01)

Network

Map DOI

Station

GRT

Map

Site Name

Round Top Mountain

Start

1975-06-26T00:00:00 (177)

End

2599-12-31T23:59:59 (365)
3000-01-01T00:00:00 (001)

Data Center

IRISDMC
NCEDC
SCEDC

Latitude

38.938667

Longitude

-122.671097

Elevation (m)

590.0

Instruments

2026-08-24T19:47:00 (236) - 2599-12-31T23:59:59 (365) 3000-01-01T00:00:00 (001)
Location Code	Instruments / Channels
01	EPISENSOR ES-T,Accelerometer,KINEMETRICS HNE 100.0Hz IRISDMC NCEDC \| HNN 100.0Hz IRISDMC NCEDC \| HNZ 100.0Hz IRISDMC NCEDC KINEMETRICS EPISENSOR ES-T S/N:6750 Accelerometer HNE 100.0Hz SCEDC \| HNN 100.0Hz SCEDC \| HNZ 100.0Hz SCEDC
2026-05-07T21:35:00 (127) - 2026-08-24T19:47:00 (236)
Location Code	Instruments / Channels
01	EPISENSOR ES-T,Accelerometer,KINEMETRICS HNE 100.0Hz IRISDMC NCEDC \| HNN 100.0Hz IRISDMC NCEDC \| HNZ 100.0Hz IRISDMC NCEDC KINEMETRICS EPISENSOR ES-T S/N:10144 Accelerometer HNE 100.0Hz SCEDC \| HNN 100.0Hz SCEDC \| HNZ 100.0Hz SCEDC
2023-10-25T20:20:00 (298) - 2599-12-31T23:59:59 (365) 3000-01-01T00:00:00 (001)
Location Code	Instruments / Channels
01	Calibration Input ECA 100.0Hz IRISDMC NCEDC SCEDC Clock Lock Loss LCL 1.0Hz IRISDMC NCEDC SCEDC Clock Phase LCE 1.0Hz IRISDMC NCEDC SCEDC Clock Quality LCQ 1.0Hz IRISDMC NCEDC SCEDC Data Receive Rate ARD 0.1Hz IRISDMC NCEDC SCEDC Gps Antenna Current VEA 0.1Hz IRISDMC NCEDC SCEDC Gps Antenna Voltage VAX 0.1Hz IRISDMC NCEDC SCEDC NANOMETRICS TRILLIUM COMPACT POSTHOLE S/N:6280 Velocity Sensor HHE 100.0Hz SCEDC \| HHN 100.0Hz SCEDC \| HHZ 100.0Hz SCEDC LHE 1.0Hz SCEDC \| LHN 1.0Hz SCEDC \| LHZ 1.0Hz SCEDC Sensor A Current VCA 0.1Hz IRISDMC NCEDC SCEDC Sensor B Current VCB 0.1Hz IRISDMC NCEDC SCEDC System Current VEC 0.1Hz IRISDMC NCEDC SCEDC System Humidity VI1 0.1Hz IRISDMC NCEDC SCEDC System Temperature VKI 0.1Hz IRISDMC NCEDC SCEDC System Voltage VEP 0.1Hz IRISDMC NCEDC SCEDC TRILLIUM COMPACT POSTHOLE,Mass Position Seismomete VME 0.1Hz IRISDMC NCEDC \| VMN 0.1Hz IRISDMC NCEDC \| VMZ 0.1Hz IRISDMC NCEDC TRILLIUM COMPACT POSTHOLE,Velocity Sensor,NANOMETR HHE 100.0Hz IRISDMC NCEDC \| HHN 100.0Hz IRISDMC NCEDC \| HHZ 100.0Hz IRISDMC NCEDC LHE 1.0Hz IRISDMC NCEDC \| LHN 1.0Hz IRISDMC NCEDC \| LHZ 1.0Hz IRISDMC NCEDC Voltage Controlled Oscillator VCO 0.1Hz IRISDMC NCEDC SCEDC
2023-10-25T20:20:00 (298) - 2026-05-07T21:35:00 (127)
Location Code	Instruments / Channels
01	EPISENSOR ES-T,Accelerometer,KINEMETRICS HNE 100.0Hz IRISDMC NCEDC \| HNN 100.0Hz IRISDMC NCEDC \| HNZ 100.0Hz IRISDMC NCEDC KINEMETRICS EPISENSOR ES-T S/N:8217 Accelerometer HNE 100.0Hz SCEDC \| HNN 100.0Hz SCEDC \| HNZ 100.0Hz SCEDC
2023-08-01T18:50:00 (213) - 2023-10-25T20:20:00 (298)
Location Code	Instruments / Channels
01	EQMET MBB-2 S/N:194222 Velocity Sensor HHE 100.0Hz SCEDC \| HHN 100.0Hz SCEDC \| HHZ 100.0Hz SCEDC LHE 1.0Hz SCEDC \| LHN 1.0Hz SCEDC \| LHZ 1.0Hz SCEDC MBB-2,Mass Position Seismometer,EQMET VME 0.1Hz IRISDMC NCEDC \| VMN 0.1Hz IRISDMC NCEDC \| VMZ 0.1Hz IRISDMC NCEDC MBB-2,Velocity Sensor,EQMET HHE 100.0Hz IRISDMC NCEDC \| HHN 100.0Hz IRISDMC NCEDC \| HHZ 100.0Hz IRISDMC NCEDC LHE 1.0Hz IRISDMC NCEDC \| LHN 1.0Hz IRISDMC NCEDC \| LHZ 1.0Hz IRISDMC NCEDC
2022-10-21T18:00:00 (294) - 2023-10-25T20:20:00 (298)
Location Code	Instruments / Channels
01	Calibration Input ECA 100.0Hz IRISDMC NCEDC SCEDC Clock Lock Loss LCL 1.0Hz IRISDMC NCEDC SCEDC Clock Phase LCE 1.0Hz IRISDMC NCEDC SCEDC Clock Quality LCQ 1.0Hz IRISDMC NCEDC SCEDC Data Receive Rate ARD 0.1Hz IRISDMC NCEDC SCEDC EPISENSOR ES-T,Accelerometer,KINEMETRICS HNE 100.0Hz IRISDMC NCEDC \| HNN 100.0Hz IRISDMC NCEDC \| HNZ 100.0Hz IRISDMC NCEDC Gps Antenna Current VEA 0.1Hz IRISDMC NCEDC SCEDC Gps Antenna Voltage VAX 0.1Hz IRISDMC NCEDC SCEDC KINEMETRICS EPISENSOR ES-T S/N:8217 Accelerometer HNE 100.0Hz SCEDC \| HNN 100.0Hz SCEDC \| HNZ 100.0Hz SCEDC Sensor A Current VCA 0.1Hz IRISDMC NCEDC SCEDC Sensor B Current VCB 0.1Hz IRISDMC NCEDC SCEDC System Current VEC 0.1Hz IRISDMC NCEDC SCEDC System Humidity VI1 0.1Hz IRISDMC NCEDC SCEDC System Temperature VKI 0.1Hz IRISDMC NCEDC SCEDC System Voltage VEP 0.1Hz IRISDMC NCEDC SCEDC Voltage Controlled Oscillator VCO 0.1Hz IRISDMC NCEDC SCEDC
2022-10-21T18:00:00 (294) - 2023-08-01T18:50:00 (213)
Location Code	Instruments / Channels
01	EQMET MBB-2 S/N:194210 Velocity Sensor HHE 100.0Hz SCEDC \| HHN 100.0Hz SCEDC \| HHZ 100.0Hz SCEDC LHE 1.0Hz SCEDC \| LHN 1.0Hz SCEDC \| LHZ 1.0Hz SCEDC MBB-2,Mass Position Seismometer,EQMET VME 0.1Hz IRISDMC NCEDC \| VMN 0.1Hz IRISDMC NCEDC \| VMZ 0.1Hz IRISDMC NCEDC MBB-2,Velocity Sensor,EQMET HHE 100.0Hz IRISDMC NCEDC \| HHN 100.0Hz IRISDMC NCEDC \| HHZ 100.0Hz IRISDMC NCEDC LHE 1.0Hz IRISDMC NCEDC \| LHN 1.0Hz IRISDMC NCEDC \| LHZ 1.0Hz IRISDMC NCEDC
2019-06-19T23:00:00 (170) - 2022-10-21T18:00:00 (294)
Location Code	Instruments / Channels
01	EPISENSOR ES-T,Accelerometer,KINEMETRICS HNE 100.0Hz IRISDMC NCEDC \| HNN 100.0Hz IRISDMC NCEDC \| HNZ 100.0Hz IRISDMC NCEDC KINEMETRICS EPISENSOR ES-T S/N:8217 Accelerometer HNE 100.0Hz SCEDC \| HNN 100.0Hz SCEDC \| HNZ 100.0Hz SCEDC
2016-12-21T20:41:00 (356) - 2022-10-21T18:00:00 (294)
Location Code	Instruments / Channels
01	L-4C VERTICAL,Velocity Sensor,SERCEL EHZ 100.0Hz IRISDMC NCEDC SERCEL L-4C VERTICAL S/N:2202 Velocity Sensor EHZ 100.0Hz SCEDC
2016-12-21T20:41:00 (356) - 2019-06-19T23:00:00 (170)
Location Code	Instruments / Channels
01	EPISENSOR ES-T,Accelerometer,KINEMETRICS HNE 100.0Hz IRISDMC NCEDC \| HNN 100.0Hz IRISDMC NCEDC \| HNZ 100.0Hz IRISDMC NCEDC KINEMETRICS EPISENSOR ES-T S/N:7599 Accelerometer HNE 100.0Hz SCEDC \| HNN 100.0Hz SCEDC \| HNZ 100.0Hz SCEDC

IRISDMC metadata changes:

Virtual network affiliations:

Name	Description
_US-REGIONAL	US Regional Networks