Hi Tiago- I assume the L15B is a 3-C, 4.5 Hz geophone! see http://www.rsuw.daleh.id.au/html/l15b_geophone.html But you explain it to be a H rather than 2 H's & V. The terminology used in seismic prospecting is the 2 H's are Radial & Transverse, and Vertical is V or Z. So if my site is X, and the Eq's are Eq; a line from X to Eq is the Radial (R) direction, and perpendicular to this is the Transverse (T) direction. If I want to record the S wave I would set the geophone direction (long axis of the element) perpendicular to R, as the S wave motion is perpendicular to the line of propagation...You will record the maximum S wave motion. Now usually the P wave has more V motion, so you might not get much P, from a Horizontal component. <<< Jim Jim O'Donnell BC-Geophysics Land and Marine Surveys Geotechnical/Geothermal/Oil & Gas/Mining Applications Seismic Surveys- Passive Surface Waves, Refraction-Tomography Ground Penetrating Radar, Resistivity, Magnetic, & VLF-EM Surveys Geophysics.Jim@......... 702.293.5664 702.281.9081 cell Boulder City, NV 89005 On Thu, Jun 6, 2013 at 10:40 AM, Tiago A.wrote: > Hi. > > Most local/regional earthquakes in my location are located in W or E, > should i point a horizontal geophone (L15B) to N-S or to W-E? > > > If most of the events were located 45 SE from me, should i place the > horizontal geophone in a 45=BA horizontal position? > > > Using the head (where the connectors are located) of the geophone as > the reference point. > > > Best Regards, > Tiago. > __________________________________________________________ > > Public Seismic Network Mailing List (PSNLIST) > > To leave this list email PSNLIST-REQUEST@.............. with > the body of the message (first line only): unsubscribe > See http://www.seismicnet.com/maillist.html for more information. > Hi Tiago- I assume the L15B is a 3-C, 4.5 Hz geophone= !=A0 see ht= tp://www.rsuw.daleh.id.au/html/l15b_geophone.html
But you explain it= to be a H rather than 2=A0H's & V.
The terminology used in seismic prospecting is the 2 H's are Radial &am= p; Transverse, and Vertical is V or Z.
So if my site is X, and the Eq= 9;s are Eq;=A0 a line from X to Eq is the Radial (R) direction, and perpend= icular to this is the Transverse (T) direction.
If I want to record the S wave I would set the geophone direction (long axi= s of the element)=A0perpendicular to R, as the S wave motion is=A0 perpendi= cular=A0to the line of propagation...You will record the maximum S wave mot= ion.
Now usually the P wave has more V=A0 motion, so you might not get much P, f= rom a Horizontal component.
<<<=A0=A0=A0 JimJim O'Donnell BC-Geophysics
Land and Marine Surveys
Geotechnical/Geothermal/Oil & Gas/Mining Applications
Seismic Surveys- Passive Surface Waves, Refraction-Tomography
Ground Penetrating Radar, Resistivity, Magnetic, & VLF-EM Surveys
Geophysics.Jim@.........= font>702.293.5664 702.281.9081cell
Boulder City, NV 89005On Thu, Jun 6, 2013 at 10:40 AM, Tiago A. <tiagoagre@.........= > wrote:
Hi.
Most local/regional earthquakes in my location are located in W or E,
should i point a horizontal geophone (L15B) to N-S or to W-E?
If most of the events were located 45 SE from me, should i place the
horizontal geophone in a 45=BA horizontal position?
Using the head (where the connectors are located) of the geophone as
the reference point.
Best Regards,
Tiago.
__________________________________________________________
Public Seismic Network Mailing List (PSNLIST)
To leave this list email = PSNLIST-REQUEST@.............. with
the body of the message (first line only): unsubscribe
See h= ttp://www.seismicnet.com/maillist.html for more information.