Hola Angel-
I forgot about the array you ran for so long in Panama-  That was a Thin=
g of Beauty!

BC-Array:
Using state of the art digital recorders: Sigmas
SR=3D4ms, T=3D60s, with GPS, battery powered  http://www.i-seis.com/inde=
x.html; =

 =

Vertical and horizontal, 1 Hz, Geophones are used to detect microseismic=
 activity:  http://www.csicablesupplies.com/PS-1.html

Visit sites weekly, to Collect data, and to replace batteries.
Close to my home in Boulder City (BC), near the Dam, and Lake Mead.
Array is in a random siting now, but plan on putting out a liner array o=
f 32 sites spaced at ~200m, to use surface waves to determine Vs & Vp pr=
ofiles to a depth ~3-6 km.

Would like something simple for EQ Locations to start. =


<<<<     Jim

Jim O'Donnell BC-Geophysics =

Geophysical Consultant/Contractor
Geotechnical/Geothermal/Oil & Gas/Mining Applications
Seismic Surveys- Passive Surface Waves, Refraction, Tomography =

Ground Penetrating Radar, Resistivity, Magnetic, & VLF-EM Surveys
Geophysics@..........  702.293.5664  702.281.9081 cell   =

Boulder City, NV 89005


---------- Original Message ----------
From: OSOP 
To: psnlist@..............
Subject: Re: EQ Location Program
Date: Sat, 31 Dec 2011 13:56:25 -0500

Hi Jim,

Happy New Year.

I have a few questions:

Do each of the stations have good GPS timing?
What is the sample rate?
Are you digitizing on site or transferring data to a central site with s=
ome analog scheme?
What is the protocol the digitizers use?
Do you plan to user array proceeding (fk) or just plain jane locations?

A fuller description of the system would help.

I wish I had my own array :)

Saludos,

Angel







On 12/31/2011 12:48 PM, Jim ODonnell wrote: =

Need EQ Location Program: =

Recently set up and running a seismic array with 8 sites using 3-C, 1 Hz=
 geophones. =

The area covers ~10 km radius with micro earthquakes (M<2) occurring wee=
kly.
I would like to find a simple location program: =

to determine magnitude, epicenter, and hypocenter.
Prefer program to be Windows OS, but will consider other systems too.

<<<<< Jim


Jim O'Donnell BC-Geophysics =

Geophysical Consultant/Contractor
Geotechnical/Geothermal/Oil & Gas/Mining Applications
Seismic Surveys- Passive Surface Waves, Refraction, Tomography =

Ground Penetrating Radar, Resistivity, Magnetic, & VLF-EM Surveys
Geophysics@..........  702.293.5664  702.281.9081 cell   =

Boulder City, NV 89005

Hola Angel-
I forgot about the array you ran for so long in Panama-&n=
bsp; That was a Thing of Beauty!

BC-Array:<=
BR>Using state of the art digital recorders: Sigmas
SR=3D4ms=
, T=3D60s, with GPS, battery powered  http://www.i-seis.com/index.html; 
 
Vert=
ical and horizontal, 1 Hz, Geophones are used to detect microseismic act=
ivity:  http://www.csi=
cablesupplies.com/PS-1.html

Visit sites weekly, to Col=
lect data, and to replace batteries.
Close to my home in Boulder=
 City (BC), near the Dam, and Lake Mead.
Array is in a random siting =
now, but plan on putting out a liner array of 32 sites spaced at ~200m, =
to use surface waves to determine Vs & Vp profiles to a depth ~3-6 k=
m.

Would like something sim=
ple for EQ Locations to start. 

<<<<   =
;  Jim

Jim O'Donnell BC-Geophysics 
Geophysical Consultant/Contractor
Geotechnical/Geothermal/Oil &=
; Gas/Mining Applications
Seismic Surveys- Passive Surface Waves, Ref=
raction, Tomography 
Ground Penetrating Radar, Resistivity, Magn=
etic, & VLF-EM Surveys
Geophysics@..........  702.293.5664 &=
nbsp;702.281.9081 cell   
Boulder City, NV 89005

---------- Original Message ----------
From: OSOP <sismos@volcanb=
aru.com>
To: psnlist@..............
Subject: Re: EQ Location Pr=
ogram
Date: Sat, 31 Dec 2011 13:56:25 -0500

Hi Jim,

Hap=
py New Year.

I have a few questions:

Do each of the statio=
ns have good GPS timing?
What is the sample rate?
Are you digitizi=
ng on site or transferring data to a central site with some analog schem=
e?
What is the protocol the digitizers use?
Do you plan to user ar=
ray proceeding (fk) or just plain jane locations?

A fuller descri=
ption of the system would help.

I wish I had my own array :)
<=
BR>Saludos,

Angel







On 12/31/2011 12=
:48 PM, Jim ODonnell wrote: 


Need EQ Location Program: 
Recently set up and runn=
ing a seismic array with 8 sites using 3-C, 1 Hz geophones. 
The area covers ~10 km radius with micro earthquakes (M<2) occur=
ring weekly.
I would like to find a simple location program: 
to d=
etermine magnitude, epicenter, and hypocenter.
Prefer program to be Wi=
ndows OS, but will consider other systems too.

<<<=
;<< Jim


Jim O'Donnell BC-Geophysics 
Geophysical Consultant/Contractor
Geotechnical/Geothermal/Oil &=
 Gas/Mining Applications
Seismic Surveys- Passive Surface Waves, Refr=
action, Tomography 
Ground Penetrating Radar, Resistivity, Magne=
tic, & VLF-EM Surveys
Geophysics@..........  702.293.5=
664  702.281.9081 cell   
Boulder City, NV 89005