Real-Time Data Exchange (revisited)
2002; Seismological Society of America; Volume: 73; Issue: 2 Linguagem: Inglês
10.1785/gssrl.73.2.185
ISSN1938-2057
Autores Tópico(s)Geological Modeling and Analysis
ResumoThe Electronic Seismologist (ES) began hyping the Internet over six years ago: how it was going to help seismologists acquire, analyze, and present seismic data in new and wondrous ways. It was touted as the next really great whiz-bang thing that everyone had better get familiar with or get left behind. Boy, was the ES right! He clearly is a cool dude with a crystal ball who can see the really obvious when it whacks him on the head. After a few columns he even stuck his neck out and “envisioned a time in the future where data from almost any seismograph in the U.S. could be available in a continuous stream to almost anyone” (Malone, 1996). A data rate of 2 Mb/sec was estimated to be enough capacity to get the whole National Seismic Network. Well, we are close to being there. Currently there are a number of institutions that collect real-time seismic data from stations outside their own networks and process or provide these data as a “virtual seismic network.” The route that a particular seismic station's data take from the seismometer to a researcher can be complex and can vary with time. One can get composites of waveform segments from many stations from one event or a continuous feed from a subselection of stations in different ways. It gets confusing enough that the ES (who is, after all, an expert in such things) can't tell what's going on and if the data he is viewing are coming or going. It's time to try to make a little sense of all of this. The ES would like to review all the different ways real-time data are exchanged between different groups and provide a cogent summary for his enthralled fans. However, after getting started with the summary he became …
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