Hi Folks,  During the times when there are no earthquakes to get excited =
about, I am driving around Boise, looking for Road Construction.
I got a map from Ada Co. Highway District from the internet showing =
various active projects and future proposals.
I found three active road projects.  The first one was about 2.5 miles =
NE of my NS sensor, that was the one with the Pile-Driver causing most =
of my mystery noise.  The Second was 3.0 miles West of my NS sensor. I =
was picking up strong signals on Sat, drove over to see if they were =
working and they were, using a large backhoe, digging a 12' ? trench.  =
The third is 3.0 miles NE, using similar heavy equipment.  And to make =
thing more interesting 1/2 mile South, they are digging a basement under =
an existing home using a small, Bobcat machine.  This morning I will =
walk over to see when they start work and try to isolate that activity.

My sensor is in the basement. I see almost no traffic not even large =
trucks.  On the other hand I sure pickup these digging activities.
From all this, I have a good reference, from at lease two different =
directions North East and West, and as you would expect the West signal =
was larger by about 1/3 even though the source about 1/2 mile further =
away.  The South basement project should give me another reference =
signal.

What might be interesting, is to come up with a homemade "thumper" =
although I have no idea how.   If I had one I would work my way around =
my house thumping away and creating a map and corresponding signals.   I =
know they rent soil compactors but I am not sure that would carry any =
distance.  I would guess it would need to be something of considerable =
weight.  Has anyone done this on a homemade scale?








Hi Folks,  During the times when=20
there are no earthquakes to get excited about, I am driving around =
Boise,=20
looking for Road Construction.
I got a map from Ada Co. Highway =
District from the=20
internet showing various active projects and future =
proposals.
I found three active road =
projects.  The first=20
one was about 2.5 miles NE of my NS sensor, that was the one with the=20
Pile-Driver causing most of my mystery noise.  The Second was 3.0 =
miles=20
West of my NS sensor. I was picking up strong signals on Sat, drove over =
to see=20
if they were working and they were, using a large backhoe, digging a 12' =
?=20
trench.  The third is 3.0 miles NE, using similar heavy =
equipment. =20
And to make thing more interesting 1/2 mile South, they are digging a =
basement=20
under an existing home using a small, Bobcat machine.  This morning =
I will=20
walk over to see when they start work and try to isolate that=20
activity.
 
My sensor is in the basement. I see =
almost no=20
traffic not even large trucks.  On the other hand I sure pickup =
these=20
digging activities.
From all this, I have a good reference, =
from at=20
lease two different directions North East and West, and as you would =
expect the=20
West signal was larger by about 1/3 even though the source about 1/2 =
mile=20
further away.  The South basement project should give me another =
reference=20
signal.
 
What might be interesting, is to come =
up with a=20
homemade "thumper" although I have no idea how.   If I had one =
I would=20
work my way around my house thumping away and creating a map and =
corresponding=20
signals.   I know they rent soil compactors but I am not sure =
that=20
would carry any distance.  I would guess it would need to be =
something of=20
considerable weight.  Has anyone done this on a homemade=20
scale?
 
Cheers, Ted