|Location of the Loughborough EQ this morning|
|Seismogram for Loughborough EQ|
|Glenn Ford (top) and Davie Galloway (bottom) analysing seismic data from |
the New Ollerton earthquake last week
The important role you play
There's an online BGS questionnaire that you can fill in if you've felt an earthquake. This contribution is vitally important as it allows our analysts to assign a value of Intensity to the earthquake. In the case of todays Leicestershire earthquake over 160 'citizen scientists' have already kindly taken the time to answer the questionnaire, enabling our analysts to identify it as Intensity 4.
The earthquakes website says this about Intensity " ....assigning an intensity requires a sample of the felt responses of the population. This is then graded according to the EMS intensity scale. For example, Intensity 1, Not felt, 2, Scarcely perceptible, 3, weak, felt by a few, up to 12 assigned for total devastation. Study of intensity and the production of isoseismal maps, contouring areas of equal intensity, is particularly important for the study of earthquakes which occurred prior to instrumental monitoring."
|Map showing location of Loughborough EQ and of those 'felt reports' from the online questionnaire|
Most felt reports lie within a 25 km radius of the epicentre. Furthest report received from Matlock, 42 km to NW
UK EarthquakesBetween 200 and 300 earthquakes are detected and located in the UK, by the British Geological Survey annually. Whilst the magnitude 2.9 Loughborough earthquake is regarded as an insignificant event by world standards (because of it's rarity, occurring around only 4 times a year) it does attracts public attention.
Earthquakes of such minor magnitude don't cause any damage but can make house shudder slightly and wake the occupants. Here are some answers to Frequently Asked Earthquake Questions .
Lauren (your friendly neighbourhood Press Officer)