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The Gnowangerup region in Western Australia's south has been experiencing up to a dozen earthquakes a day rattling crockery and unnerving locals’ scientists call it an "earthquake swarm." why the swarm is happening is mystifying researchers who have bolstered monitoring equipment in the area in an effort to determine the cause.

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00:02Earthquakes have become a daily occurrence in the Narangarub area for at least a month.
00:07Tim House's farm is a hotspot.
00:09We've noticed probably 10 to 12 every day, but I think they're recording many more than that, that we can't
00:15feel.
00:15There have been more than 70 earthquakes in the region during February alone.
00:19The largest was a magnitude of 3.1.
00:22Pretty scary, one woke us up the other night and the plates on the sink rattled
00:27and that was a bit more like an earthquake you'd see in a movie, but it's very short and sharp.
00:33We refer to these as earthquake swarms where you get an increase in activity
00:38that can persist for days, weeks, months and even years.
00:43There's been no damage reported, but the cause of the quakes is unclear.
00:47To get earthquakes in the middle of the Yilgarn Kraton,
00:49so one of the oldest, strongest geological units here in Australia,
00:53an engine block of the continent, that is unusual and it's puzzling.
00:57Extra monitoring equipment has been installed to gather more data.
01:00When something significant like this happens, we get on the ground and we densify that network
01:06and it's just, it's triangulation to find the epicentres and the depths.
01:10So the more stations you have in the vicinity, the better you can nail down the actual epicentres
01:15and better understand ultimately what's going on.
01:18Seismologists say a large earthquake is unlikely, but expect tremors to continue in this region for some time to come.
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