New Mexico Seismic Networks 1. New Mexico Tech Seismic Network Rick Aster, Sue Bilek (NMT EES Dept Contacts)

Stations within the NMT Seismic Network (red) Also shown stations: ANMO, SDCO (blue stars, GSN stations) Not shown - 6 strong motion sites within Albuquerque area -- USGS

NMT Network Statistics 19 stations –Primarily short period (1 Hz) vertical component instruments –2 3-component stations also running (only 1 currently operational) –Data telemetered via FM radio to the NMT Seismological Observatory –Stored using Earthworm system, sent to IRIS DMC (SC network)

Current Network Coverage Focused on 2 areas –SE New Mexico Monitoring of seismicity near the Waste Isolation Pilot Plant (WIPP) Some funding provided by DOE/subcontractor to maintain this SE network –Socorro Seismic Anomaly Region with ~50% of state’s seismic activity In region of the Socorro Magma Body, small mid-crustal magma feature at 19 km depth No long-term funding to support this network Current funding to operate 2 temporary broad-band stations in SSA region (mid )

NM Seismicity Sanford catalog (blue, magnitude > 2 thru 1998) + more recent data (red, magnitude: -1 to 4.6) Most events concentrated in SSA

Data October 30, 2005 (UTC) felt earthquake swarm located approximately 5.5 km west of Socorro, included ~300 aftershocks. Largest event was magnitude 2.4. (

New Efforts In SSA region Earthquake Locations (9/ /2007) –Temporary installation of 2 new broadband seismographs to fill gaps in local seismic network coverage above the SMB (especially important for depth resolution).

NM State “Wish List” 2-3 additional broadband stations –Targeted areas around northern NM, southern NM where there are gaps in current network coverage –Tie in to Los Alamos Seismic Network Funds to create a dedicated “seismic observatory manager” for the state –Help coordinate all parts of the NM seismic networks (NMT, LANL, USGS) –Earthquake planning within DPS

2. Los Alamos Seismic Network In operation since September, stations (16 channels) 1 digital broadband (co-located with a 3- component short period seismometer) 5 3-component short period seismometers 2 vertical-only short period seismometers 6 (forensic) strong ground motion detectors located at key lab sites 2 detection programs running concurrently: X-detect (486 running DOS, yes, really!) Earthworm 6.3 on Win XP Current contacts: Peter Roberts, Jim TenCate, Leigh House (on leave) Earth and Environmental Sciences, Geophysics Group, LANL

Station Location Maps

Site photos

More site photos

M = 2.2, Caja del Rio 1 August 2006

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