are the webicorders from the geophones that I own. There might be noise on the webicorders as
wind and human traffic is close to them. This can
happen at random times and without warning. Most
earthquakes that I record are also documented by
Icelandic Met Office website. If an event appears on
my geophone the location and magnitude of it can be
found at Icelandic Met Office website in most cases. I
only record 1 day or 24 hours worth of data on the
webicorders. I keep the raw data for 160 days so I can
check them later if needed.
About the geophones This is 4.5Hz geophone and is
from Mark Products. This geophone has three axis. It has a
East, West, North, South, Z (vertical) axis. Here are info about this type of
geophone. Here are technical info
about this geophone, how sensitive it is and what
frequencies it detects. Geophones are from Redwood City Public
Seismic Network. It is no longer possible to buy
this geophones. It is now possible to buy Raspberry
Shake seismometers here. Contact
To contact me please send
email at volcano [at] jonfr.com with questions.
Explanation of the tremor plot Green line
= no data recorded / coming in
Black line = normal data recorded
Red line = local earthquake recorded. Noise sometimes creates
Orange line = Telesismic event has been detected.
channel (Z). Updated every 5 min.
Stops in 2018 due to changes at hosting site.
channel (Z). Updated every 5 min. Information
on wind noise can be found here. Noisy
starts between February to May 2019.
This is vertical channel (Z). Updated every 5
is an nosy station due
to traffic from cars,
trains and people.
Lowest noise period
between 00:00 - 05:00