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The goal of the Antarctic Network of Unattended Broadband Seismometers Project is to deploy a network of a dozen seismometers that will record data throughout the year. Half the stations will be at existing Automated Geophysical Observatory (AGO) sites in East Antarctica and half will be at sites in West Antarctica that are powered by wind- and solar-energy. These data will fill a huge lacuna in the global seismic dataset and provide valuable new information about the Antarctic crust and mantle structure.

Current Status

** All stations have been retrieved and the experiment is over** The data are at the IRIS data center and will be released soon.

Each station is equipped with an ARGOS satellite transmitter that sends State-Of-Health (SOH) messages, including battery voltage, internal and external temperature, disk-usage, etc. These links provide a summary of the whole network and a detailed look at the data from a particular station in real time.

Scientific Motivation

The geologic and glaciologic structure, dynamics, and history of Antarctica are poorly known. The geologic and tectonic makeup and history of the continent are hidden under kilometers of ice. To look at the crust (and deeper), we must use "remote sensing" geophysical methods. Broadband seismic recording and interpretation of regional and global earthquakes is one of the best such methods.

The abstract of the proposal give some more background on the goals of the project.

Engineering Details

Operating a continuously-recording seismic station in Antarctica at a site that is not occupied year-round presents some formidable technical and logistic challenges. The problem is in three parts: seismic sensor stability and noise reduction; continuous power supply; and data storage, electronic robustness, and integrity. We have attempted to solve all these problems as part of the ANUBIS project (funded by the National Science Foundation). If successful, this system could be the basis for numerous remote geophysical stations.

Links

Some academic and manufacturer links of interest.

Some of my own links (Linux, glaciology, seismology, news, etc.)

Night/Day Terminator

Today's terminator at Byrd Surface Camp at noon. Click for a larger image. Image courtesy of the xearth program

Terminator

Uptime Graph for all installed stations

uptime graph

Sridhar Anandakrishnan <sak@essc.psu.edu>
Last modified: Thu Jan 25 14:11:59 CST 2001