MCCM - Marconi Conference Center

We operate broadband and borehole stations under the network code BK. The Berkeley Digital Seismic Network (BDSN) is a regional network of very broadband and strong motion seismic stations designed to monitor regional seismic activity as well as provide high quality data. The Berkeley borehole stations have borehole geophones or other seismic sensors and may have other geophysical instrumentation.

BARD is our GPS network for monitoring crustal deformation across the Pacific-North America plate boundary and in the San Francisco Bay Area for earthquake hazard reduction studies and rapid earthquake emergency response assessment

Station Name MCCM (MCCM)
In Operation 2006/02/03 18:30:00 - Present
Elevation: -3.7962 meters
Instrumentation Broadband


The site is located at the Marconi Conference Center, part of the State of California Parks system. The Conference Center occupies the site of Guglielmo Marconi's Marshall Receiving Station, where signals were received from the first radio transmission across the Pacific Ocean.

MCCM is a cooperative station with the Advanced National Seismic System and was a USArray component of the Earthscope program from February 2006 to November 2007. Support for MCCM was also provided by the Governor's Office of Emergency Services as part of the California Integrated Seismic Network.


Berkeley Digital Seismic Network (BK)
Bay Area Regional Deformation Network Network (BARD)


Melange of fragmented and sheared Franciscan Complex rocks

Borehole Conditions

GPS Monument Description

Antenna mount is embedded in wall of concrete seismic vault, built on bedrock.

Seismic Station Pictures

View of Tomales Bay from the Conference Center<br>Courtesy of the Marconi Conference Center

View of Tomales Bay from the Conference Center
Courtesy of the Marconi Conference Center

Marconi's receiving towers<br>Courtesy of the Marconi Conference Center

Marconi's receiving towers
Courtesy of the Marconi Conference Center

GPS Station Daily Timeseries

GPS Station Pictures





Table of Seismic Instrumentation

SensorDataloggerSEED ChannelsLocation
AccelerometerEPISENSOR ES-TQ330HRHN?00

GPS Instrumentation


Waveforms and associated metadata, and GPS data, are available at the Northern California Earthquake Data Center (NCEDC).

Waveform Data

GPS Data

Noise Analysis

View more noise plots

GPS Data Quality


Data completeness is defined both as "Completeness of observations" and "Cycle slips per observation". "Completeness of Obs." is the number of epochs in the final RINEX file normalized to the expected number. This percentage will go down if time is missing from the RINEX file. "Cycle slips per Obs." is the total number of detected cycle slip normalized to the total number of observations in the RINEX file. This number will increase as the receiver loses lock on satellites more frequently.

Previous Year
MCCM completeness last year
MCCM completeness lifetime


The effects of multipath on the data are estimated by parameters for L1 and L2 (MP1 and MP2 respectively); see Estey and Meertens (GPS Solutions, 1999) for derivation. The daily value is the RMS of MP1 and MP2 throughout the day and for all satellites. Higher values indicate a greater prevalence and/or strength of multipathing, i.e. objects on the ground are providing multiple reflection pathways from the satellite to antenna.

Previous Year
MCCM multipath last year
MCCM multipath lifetime

Signal-to-Noise Ratio

The Signal-to-Noise ratios are the mean values above the QC elevation mask for L1 and L2 respectively.

Previous Year
MCCM SNR last year
MCCM SNR lifetime