Looking for a surplus seismometer

[Marchal van Lare]

Hi All,

More than a year ago I started recording earthquakes with three 4.5 Hz Mark
Products geophones.
The geophones are only sensitive to nearby earthquake activity. The problem
is, I am missing the teleseismic events.

To record the large distant 'quakes, I will need a longer period
seismograph.

I tried to build a seismograph a while ago, but it wasn't a success since I
couldn't get the right materials.

My question is, does anyone know of a source where I can buy a surplus
seismometer (or parts). May be some one is willing to build a Lehman
seismograph for me?

I hope someone can help me.

Best regards,

Marchal van Lare

--
Pour contacter le modérateur : fsg-...@neuronnexion.fr

[Marchal van Lare]