Abstract
THE seismographs of the Vesuvian Observatory and of the Naples University have shown increased activity the last two days. This culminated this morning at 6.47 a.m. in a distinct shock seven seconds duration, direction north to south, chiefly undulatory, but elevatory towards the end. From these facts Prof. Palmieri considered it to come from a distance, and not of local origin. This was proved by telegrams from Isurnia and Vinchiaturo in the Apennines. All to-day the amount of vapour from Veruvius is much more abundant, and this evening it is brilliant; the quantity of lava flowing is increased. This is a good example on a small scale of seismic activity having its focus in a mountain chain affecting the neighbouring volcanoes.
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JOHNSTON-LAVIS, H. Earthquakes in Naples. Nature 26, 151 (1882). https://doi.org/10.1038/026151b0
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DOI: https://doi.org/10.1038/026151b0
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