Edward Pigot
Seismic Observatory (EPSO),
Coonabarabran, NSW, Australia
The EPSO seismic sensors are located in the Timor
Valley, 5km East of Coonabarabran,
NSW, Australia. Click on images below for full sized
seismograms. [Weather: @EPSO
| Regional
| Satellite
weather station currently off-line)]
The EPSOVolksmeter
sensor records long-period horizontal ground motion, and
the EPSO geophones record short-period horizontal and vertical ground
motions. The Volksmeter is
more sensitive to teleseismic (i.e. distant) events, such as those from
Indonesia
and the Pacific, whereas the geophones generally detect relatively
local events
within NSW, such as Hunter
Valley
mine explosions. The Volksmeter separately records
North-South and East-West ground motions, whereas the geophones
separately detect North-South, East-West and vertical ('Z') motions.
Another private seismic station is located at Swansea,
Central
Coast,
NSW (SWS), 305km southeast of EPSO.
Comparison between Coonabarabran and Swansea provides a good cross
check that a EPSO displayed event is 'real', and not due to some local
instrument
disturbance. The
US Geological Survey (USGS) coordinate and process data from a global
network
of
seismographs, and these data are transmitted in real
time
to
the Albuquerque
Seismological Laboratory, New Mexico. Within minutes of a seismic
event
occurring
anywhere in the world, notifications are broadcast via the superb USGS Earthquake
Notification Service. Some usefully nearby on-line
USGS-network
stations are located at:
The following table presents seismograms from the above stations
compared with observations from EPSO, along with observations from the
private
station at Swansea,
NSW . Click
on the images below for full sized
seismograms.
See something on the traces?
Check them against latest observations from:- USGS
-
Map,
Australian
region; very promptly
updated with recent events in the Australian region. IRIS - Seismic Monitor - Map,
World An eye catching world map showing current earthquake
events. Geoscience Australia -
List All earthquakes, from anywhere, detected by Geoscience
Australia- may take 1-3 days for details to be posted. Earthquake News -
List - Mainland Aussie earthquakes detected by the ES&S SRC. PIRSA
- The 20 most recently recorded earthquakes in South Australia.
Other useful links: USGS -
Arrival time calculator, recent earthquake arrival times and
estimated local ground motions. International
Registry of Seismograph Stations - a list of all the world's
seismic observatories. AEES - The Australian Earthquake
Engineering Society NZSEE - The New Zealand Society
for Earthquake Engineering Google Earth/kml files: International
Registry
of
Seismograph
Stations - whereabouts of all the world's
seismic observatories. USGS
all
M1+
quakes for the previous 7 days, and fault boundaries etc. Australian
Atlas
of
Operating Mines Interested in receiving prompt email
notifications of recent events? The USGS have an excellent and fastEarthquake
Notification Service, which users may customise to
monitor a specific geographic region. Generally within an hour of
an event occurring anywhere within the world, a detailed email report
will be transmitted to a registered user. A truly wonderful
service, and gratis. EPSO commenced operation in May
2006, and
since then several significant seismic events have been recorded.
For a listing of the large and unusual events recorded at Coonabarabran
visit our Significant
Events page.
A construction log of EPSO may be found here.
For
suggestions
and
comments
regarding
this
web
site,
please
contact
Andre.
