Hey Joe

From Evansville, IN; I, too, have a basement. I sit on sediments much =
deeper that yours. I have a 4 acre lake 25 ft from my back door. I have =
a set of geophones outside and two lehmans and a homemade vertical in =
the basement. It is just my wife and I at home. When the kids come back =
for the holidays, detection is almost useless. I srongly suggest you put =
your geophones in the ground outside. This will give you something to =
compare house activities to. When things are quiet in the house, lehmans =
will detect activity to your satisfaction well beyond the New Madrid =
zone. Most New Madrid actiivty consists of earthquakes below two in =
magnitude. I copy some of these quakes. This magnitude quake isn't as =
satisfying (and probably will not interest you as you get more =
operational/ get the bugs out of your system) as some of the regional =
quakes in the 2.4 to 4 range. For instance, recently; the three quakes =
in Maine, one in Oklahoma, the two in South Carolina were satisfying. =
Plus, there is some quarry activity that you will see, and this activity =
will hide/interfere with earthquake recording. When we are gone for a =
week or so and the daughter-in-law or son come in to feed the cat, I can =
tell the difference between her 120 lb walk in the hall upstairs to my =
son's 210 lb walk. What I don't understand, is that the washing machine, =
dryer and even the sump pump in the basement have not been a problem. =
But you walk around down there! Or let the December sun fall the the =
basement floor! There has been some very good discussions on the PSN =
network in the last week or so. You will be wise and a penny saved to =
heed them.







Hey Joe
 
From Evansville, IN; I, too, have a =
basement. I sit=20
on sediments much deeper that yours. I have a 4 acre lake 25 ft from my =
back=20
door. I have a set of geophones outside and two lehmans and a homemade =
vertical=20
in the basement. It is just my wife and I at home. When the kids come =
back for=20
the holidays, detection is almost useless. I srongly suggest you put =
your=20
geophones in the ground outside. This will give you something to =
compare=20
house activities to. When things are quiet in the house, lehmans will =
detect=20
activity to your satisfaction well beyond the New Madrid zone. Most =
New=20
Madrid actiivty consists of earthquakes below two in magnitude. I copy =
some of=20
these quakes. This magnitude quake isn't as satisfying (and probably =
will not=20
interest you as you get more operational/ get the bugs out of your =
system) as=20
some of the regional quakes in the 2.4 to 4 range. For instance, =
recently; the=20
three quakes in Maine, one in Oklahoma, the two in South Carolina were=20
satisfying. Plus, there is some quarry activity that you will see, and =
this=20
activity will hide/interfere with earthquake recording. When we are gone =
for a=20
week or so and the daughter-in-law or son come in to feed the cat, I can =
tell=20
the difference between her 120 lb walk in the hall upstairs to my son's =
210 lb=20
walk. What I don't understand, is that the washing machine, dryer and =
even the=20
sump pump in the basement have not been a problem. But you walk around =
down=20
there! Or let the December sun fall the the basement floor! There has =
been some=20
very good discussions on the PSN network in the last week or so. You =
will be=20
wise and a penny saved to heed them.

  
Tom