| 21. | -- The extraordinary complexity of the inner Earth is being revealed by a fast-growing network of seismic stations.
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| 22. | The explosion was registered by 94 seismic stations and two infrasound stations in the CTBTO's global monitoring system.
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| 23. | Such information is especially important in the Northeast, he added, " where we don't have many seismic stations ."
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| 24. | U . S . and Norwegian seismic stations both reported two explosions at the time the Kursk went down.
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| 25. | Seismic stations on the volcano's southern slope in recent days have detected 15 to 20 daily tremors, he said.
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| 26. | Sitka, a seismological observatory since 1904, and Fairbanks were the only two seismic stations operating in Alaska in 1964.
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| 27. | Incorporated Research has a seismic station in Pakistan, Wallace said, but data from that site was yet unavailable for analysis.
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| 28. | From the neutrino detectors embedded in the South Pole's ice to the seismic stations in Siberia, the world is wired.
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| 29. | In the meantime, the Internet grows, and an increasing number of seismic stations use it to share their results openly.
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| 30. | The explosion was used to calibrate equipment at seismic stations around the world to help them monitor future underground explosions.
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