Category Archives: Cascadia

Cascade seismograms – update

I have updated the seismogram pages now and apologise for the long gap in updates! Mount St Helens is a problem. VALT is just about useless with only 3 days in June and 1 in July, and JUN on St … Continue reading

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Magnitude 4.1 Vancouver Island. Canada region 01-Jun-12 (b000a49n)(271050)

See source attribution and disclaimer notice EMSC Earthquakes details pages See also the earlier Mag 4.1 mb

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Magnitude 4.1 Vancouver Island. Canada region 01-Jun-12 (b000a48m)

See source attribution and disclaimer notice USGS Earthquakes details pages Note: This was followed by a further Mag 4.1 a few hours later

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A Study of Mount St Helens ‘Pops’ 28-Jan-12

This study sets out to try and determine the nature/source of a series of ‘pops’ that appeared on the Mount St. Helens seismograph stations commencing at 23:50 UTC on the 27th January 2012. This was later shown to extend into … Continue reading

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Magnitude 3.4 Washington 25-Jan-12 10:51 (Mt St Helens SZ)

See source attribution and disclaimer notice Link to USGS pages The link may not work after a few weeks. Magnitude 3.4 Date-Time Wednesday, January 25, 2012 at 10:51:30 UTC Wednesday, January 25, 2012 at 02:51:30 AM at epicenter Location 46.340°N, … Continue reading

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