Subject: Re: Recording earthquakes from 3rd floor Hi Glenn, I am used to high background noise, so that won't be a problem. I won't e far up from the ground. But high enough up. I am unclear on how they uild houses in Denmark to be exact. But I am going to know soon enough n that issue. I am going to be use a geophone 4.5Hz as I have been doing so far. I do ot know when I get a low period seismomter. Dear J=C3=B3n Fr=C3=ADmann. Mauro Mariotti in Italy used to sell special period compensation boards= which effectively turned 4.5 Hz geophones into 0.5 Hz ones. With this modi= fication, they pick up distant P ans S waves very nicely. Regards, Chris Capman= Subject: Re: Recording earthquakes from 3rd floor
Hi Gle= nn, I am used to high background noise, so that won't be = a problem. I won't be far up from the ground. But high enough up. I am u= nclear on how they build houses in Denmark to be exact. But I am going to know soon enough on that issue. I am going to be use a geophone 4.5Hz as I have been doing so far. I do not know when I get a low period seismomter. Dear J=C3=B3n Fr=C3=ADmann. Mauro Mariotti in Italy used to sell special period comp= ensation boards which effectively turned 4.5 Hz geophones into 0.5 Hz ones.= With this modification, they pick up distant P ans S waves very nicely.Regards= ,Chr= is Capman