Earthquake Shocks
Recorded In Spain
A remarkably strongly recorded seismograph of the Murchison earthquake, obtained at the Cartoja Observatory, in Granada, Spain, has been received by the Government seismologist, Dr. CE. Adams. Cartuja is very nearly antipodal to New Zealand, and the earthquake waves which reached there travelled right through the centre of the earth being recorded upon arrival most strongly on the vertical component machine.
Roughly speaking, it took the waves 20 minutes to reach Cartuja. As the diameter of the earth is about 8000 miles, this means a rate of travelling of about 6% miles a second. The same machine also recorded, but less strongly, one of the main after-shocks, which occurred on June 22nd.
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https://paperspast.natlib.govt.nz/newspapers/NORAG19291016.2.7
Bibliographic details
Northland Age, Volume 1, Issue 44, 16 October 1929, Page 2
Word Count
117Earthquake Shocks Northland Age, Volume 1, Issue 44, 16 October 1929, Page 2
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