0906162005PAUL.sac Situated in the Southern Atlantic between South Africa and Antartica, this earthquake made itself known by a distinct ripple on the helicorder between 21:00 and 21:20.

ESA have decided to cut seismometers from the exomars mission in 2016 to save money.   So the existance or not of marsquakes will remain a mystery for a while longer

http://news.bbc.co.uk/1/hi/sci/tech/8102086.stm

0906131717PAUL.sac

 

Earthquake in Eastern Kazakhstan, 13th June at 17:17:40 UT, no reports of damage or casualties.

Upgrading of servers at IRIS caused a few problems in the last week, with uploading the hour logs via "upload" and Helicorder images via SnagIt. The "glitches" have now been resolved and normal service is resumed.

The amplitude of a trace recorded on your seismometer is not a good way of telling how big the event that caused it was.   In the immortal words of Father Ted, it could be small or far away and still look the same size (youtube clip available at http://www.youtube.com/watch?v=GmU_q5xrnto )  

I have had a few teachers ask this question recently so I will post an answer here.

Because earthquakes can happen in any country and in any time zone seismologists use UTC (the new name for GMT) when they identify the time of an event.    The Amaseis software works out your local time zone and summertime settings from the PC and automatically adjusts the time on your seismic data to be synched to UTC.    (see  http://en.wikipedia.org/wiki/Coordinated_Universal_Time for a detailed article on UTC)

  0906051942PAUL.sac

 

Showed up quite clearly on the helicorder screen, used high pass filter to produce trace above.

Clearly noticeable on the Helicorder screen, but the P wave arrival is hardly noticeable.  No reports of damage or casualties.

    0906050330PAUL.sac

 

There was an interesting article (BBC world news web page-americas) earlier last week on the installation of sensors for an earthquake early warning system along the San andreas fault, allthough it would only give  30 sec early warning, the signal travelling at the speed of light compared to the seismic wave at 2miles per sec, this would be enough if automated to stop lifts at floors rather than between, warn operating theatres etc..

Have had trouble uploading PAUL data through upload to IRIS, as well as uploading the helicorder screen through snaggit, upgrades on the IRIS system seemed to have caused a "glitch", hopefully back to normal next week.

Can not check remotely for the latest earthqauke in the UK, 10Km NE of Port Talbot 5th June at 19:42 which shows up on the BGS seismometers.

Dr. Jordi Diaz Cusi in Barcelona had just set up a SEP seismometer that he plans to use in outreach activities with local schools when he noticed some strange vibrations that coincided with goals scored by FC barcelona in eth Champions League final.   Even though the match was in Rome there were 8000 keen FC Barca fans watching the match on a giant screen just down the road from his institute  

http://www.ictja.csic.es/edt/jd/GolsRoma/gols_roma_web.htm

 

 

Went into work to see how instrument was doing and look what happened...

[You do not have permission to access this file]

Thank goodness the tsunami alert has passed.