It is suggested that you avail yourself of the long standing documentation about this Project so that you will know what you are talking about.

The Quake-Catcher Network (QCN) is a seismic network that implements distributed/volunteer computing with the potential to provide critical earthquake information by filling in the gaps between traditional seismic stations. Microelectromechanical systems (MEMS) sensors detect vibrations within the frequency range of local seismic waves (0.1–20 Hz), so any internet-connected computer with an internal or external MEMS accelerometer can become a strong-motion seismic station. The QCN, a distributed computing project, uses idle computer cycles and MEMS sensors to increase the number of seismic stations, which may soon provide faster and more accurate detection and characterization of moderate to large earthquakes. We present accelerograms and triggering analysis of an Mb 5.1 earthquake recorded by laptop MEMS accelerometers during early testing of the QCN system. In addition, we present here the advantages of distributed computing and MEMS accelerometers for seismic monitoring, as well as basic triggering algorithms.

The QCN capitalizes on the main advantage of distributed computing—achieving large numbers of processors with low infrastructure costs—to provide a dense, large-scale seismic network. While MEMS accelerometers are less sensitive than typical broadband or short-period sensors, a higher number of stations is advantageous for both the study of earthquakes and, potentially, earthquake early warning (Allen and Kanamori 2003; Wurman et al. 2007). Volunteer computing reduces overhead by limiting instrument, operation, and maintenance costs associated with traditional seismic networks (Anderson et al. 2002).

Life and death are one, even as the river and the sea are one.
In the depth of your hopes and desires lies your silent knowledge of the beyond;
And like seeds dreaming beneath the snow your heart dreams of spring.
Trust the dreams, for in them is hidden the gate to eternity.


Only when you drink from the river of silence shall you indeed sing.
And when you have reached the mountain top, then you shall begin to climb.
And when the earth shall claim your limbs, then shall you truly dance.

Hi, just to bring a close to this thread. I have recovered all my WU\'s from backup.
Now, when will the SAP server come back on line?
Regards
Masud.

Marj, I don\'t have a laptop - or anything else - with an accelerometer, but what a truly amazing concept! I hope they can make it work usefully.

John.