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Mike Sandiford edited Results.md
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#Early results from borehole array.
Since their dployment a number of earthquakes have been detected with the new borehole instruments (Figure 1), including
a sequnce of low magnitude
aftershock events following the M3.2 Moe earthquake of October
17th. ??, 2014. As our processing and analysis methods develop, we envisage that much smaller events will emerge from the data.
##2014-10-10UTC10:20, near Korumburra, Estimated magnitude: 1.5
One such event near Korumburra
(hypocentre ..., (?? add hypocentre, 2014-10-10UTC10:20) provides an opportunity to compare waveformson surface and subsurface instruments. Whilst P-wave arrivals can be easily detected on borehole stations, they are difficult to detect on surface stations. S-waves arrivals from borehole stations will substantially improve event location.
Figure 2 shows this event at the nearest borehole station, and Figure 3 shows the corresponding STA/LTA filter response, which is commonly used for automatic event detection. Figure 3 shows the P and S-wave picks from the borehole station furthest from the event.