CERI at The University of Memphis, TN

Date: April 14, 1999

Location, Contact, and Address:

Cooperative New Madrid Seismic Network recorded at University of Memphis, Memphis, TN, and at Saint Louis University, St Louis, MO

Mitch Withers (withers@ceri.memphis.edu) 901-678-4940
Bob Herrmann (rbh@eas.slu.edu) 314-977-3120

3904 Central Ave, Memphis, TN 38152

Network Characteristics:

84 Analog stations, mostly short-period, three component, covering the New Madrid Seismic Zone in southwest Missouri, eastern Arkansas, and western Tennessee

We are in the process of replacing eqacquire with earthworm. These two systems are running in parallel at Memphis. We will have at least 3 independent remote processing sites that are able to transfer pick messages via tcp links over ISDN telephone to a central site in Memphis that will then pull waveforms from the wave tanks at the remote sites as appropriate. In addition to the central site at CERI, we currently to have two of the three remote sites operating earthworm v3.9.

Analog data are digitized by National Instruments PCI-MIO-16E-4 a2d and we use a single AMUX64T mux (the remote nodes are equipped with dual muxes). We have installed an SMBI backplane to the mux to facilitate wiring, guid, and clock, and to reduce noise. The a2d is installed on a pentium running NT Server 4.0.

11- continuous 16-bit DST (Digital Seismic Telemetry) stations (6 channels each) in Guralp Compressed Format are being folded into the processing. 8 stations are installed.

This web page was stolen from the USGS Menlo Park, and hacked (thanks Lynn).


Standard Earthworm Modules Currently in Use

V3.9

Waveform Data Acquisition & Conversion: