Map
of California & Nevada earthquakes
MHDL - Marin Headlands, GG Nat'l Rec. Area, CA, USA
View from the Marin Headlands |
2006/05/17 23:00:00 - Present
Latitude: 37.8423
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Installation of strainmeter at MHDL |
Location |
Geology |
Vault Conditions
Instrumentation |
Network |
Operation Notes
Noise Characteristics |
Data Availability
- Location:
-
MHDL is located in the Marin
Headlands of the Golden Gate National Recreation Area and was
installed under the auspices of the National
Park Service. This site is known as SFMAR in the
USGS Low Frequency Network.
Although the installation is not complete as far as the data acquisition using the Quanterra datalogger, the USGS satellite system is installed and operational.
- Geology:
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TBD
- Vault/Borehole conditions:
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The MiniPBO borehole was installed on 08/06/2002. The strainmeter
was installed at 520.6 ft and the seismometer package at 489.2 ft depth.
This figure
shows the location of equipment in the borehole.
- Instrumentation:
-
Sensor Datalogger Start Date End Date SEED Channels Location AntennaCurrent Q330 2006/10/25 Present VK? 20 BF7 Q330 2006/10/25 Present LT?,BT?,VT? 20 Battery Voltage Q4120 2006/05/17 Present LE?,UE? ClockPhase Q330 2006/10/25 Present VE? 20 ClockQuality Q330 2006/10/25 Present VE? 20 ElectroMagnetics Inc. BF4 Magnetometer Q330 2006/10/25 Present BT?,LT?,VT? 20 InputVoltage Q330 2006/10/25 Present VP? 20 Internal Temperature Q4120 2006/05/17 Present UK? Mark Products L-22 Horizontal Geophone Q4120 2006/05/17 2006/05/26 BP?,LP?,EP? Mark Products L-22 Horizontal Geophone Q4120 2006/05/26 2007/05/14 LP?,BP?,EP? Mark Products L-22 Horizontal Geophone Q4120 2007/05/14 2007/05/21 LP?,EP?,BP? Mark Products L-22 Horizontal Geophone Q4120 2007/05/21 2007/07/24 EP?,LP?,BP? Mark Products L-22 Horizontal Geophone Q4120 2007/07/24 Present EP?,BP?,LP? Mark Products L-22 Vertical Geophone Q4120 2006/05/17 2006/05/26 EP?,LP?,BP? Mark Products L-22 Vertical Geophone Q4120 2006/05/26 2007/05/14 BP?,EP?,LP? Mark Products L-22 Vertical Geophone Q4120 2007/05/14 2007/05/21 LP?,EP?,BP? Mark Products L-22 Vertical Geophone Q4120 2007/05/21 2007/07/24 LP?,BP?,EP? Mark Products L-22 Vertical Geophone Q4120 2007/07/24 Present BP?,LP?,EP? Paroscientific 8WD Digital Pressure Meter PDPM 2006/05/17 Present LD? Sacks 3-component Tensor Strainmeter Q330 2006/10/25 Present LC? 20 Sacks 3-component Tensor Strainmeter Q4120 2006/05/17 Present HS?,LS?,BS?,VS?,US? Setra Systems Model 270 Barometer Q4120 2006/05/17 Present LD? SystemCurrent Q330 2006/10/25 Present VE?,VC? 20 - Network:
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BK,UL (Mini PBO Network and USGS Low Frequency Network)
- Operation Notes: (may not be current)
- This section summarizes major changes in equipment or in instrumentation at MHDL.
- Noise Characteristics:
-
No noise information for MHDL is available at this time.
- Data Availability:
- BDSN waveforms and associated metadata are available at the
Northern California Earthquake Data Center (NCEDC).
- Map of Mini-PBO stations
- Table of Mini-PBO stations
- BK Information Directory, including
- List of station locations
- List of available channels
- UL Information Directory, including
- List of station locations
- List of available channels
- Instrument Response
- Information on Quanterra 4120 FIR Filter changes - 6/30/2003
Several tools provide access to SEED format data at the NCEDC, both in terms of querying the archives and allowing data requests.- Querying the archives
- Requesting data
Help on using these tools is available.
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Berkeley Seismological Lab
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Copyright 1995-2005, The Regents of the University of California.
Last modified: Wed Jun 25 13:34:08 PDT 2008