17 Aug
2018
17 Aug
'18
7:35 a.m.
Hello
This is a CCF of two stations that are 10km apart.Please tell me what could
be causing the impulse at the origin.Is it acceptable?
Kind regards
Linda Akromah
17 Aug
17 Aug
8:14 a.m.
New subject: [EXTERNAL] CCF
Is the x-axis seconds or samples? What are the bandpass frequencies?
-ashton
On Thu, Aug 16, 2018 at 7:35 PM, Linda Akromah <lakromah60(a)gmail.com> wrote:
Hello
This is a CCF of two stations that are 10km apart.Please tell me what could
be causing the impulse at the origin.Is it acceptable?
Kind regards
Linda Akromah
_______________________________________________
MSNoise mailing list
MSNoise(a)mailman-as.oma.be
http://mailman-as.oma.be/mailman/listinfo/msnoise
--
Ashton F. Flinders, Ph.D
U.S. Geological Survey
345 Middlefield Road
Menlo Park, CA 94025
(650) 329-5050
8:27 a.m.
New subject: [EXTERNAL] CCF
Thank you for responding.
The x-axis are time lags in seconds.Bandpassed 0.005Hz (low freq) and 2.0
(high frequency).
Regards
Linda
On Fri, 17 Aug 2018, 08:14 Flinders, Ashton <aflinders(a)usgs.gov> wrote:
Is the x-axis seconds or samples? What are the
bandpass frequencies?
-ashton
On Thu, Aug 16, 2018 at 7:35 PM, Linda Akromah <lakromah60(a)gmail.com>
wrote:
Hello
This is a CCF of two stations that are 10km apart.Please tell me what
could
be causing the impulse at the origin.Is it
acceptable?
Kind regards
Linda Akromah
_______________________________________________
MSNoise mailing list
MSNoise(a)mailman-as.oma.be
http://mailman-as.oma.be/mailman/listinfo/msnoise
--
Ashton F. Flinders, Ph.D
U.S. Geological Survey
345 Middlefield Road
Menlo Park, CA 94025
(650) 329-5050
_______________________________________________
MSNoise mailing list
MSNoise(a)mailman-as.oma.be
http://mailman-as.oma.be/mailman/listinfo/msnoise
8:31 a.m.
New subject: [EXTERNAL] CCF
Hi,
200s is long for stations 10 km apart, (200 km for surface waves at
3.7km/s = >700 km wavelength
You can try to run
msnoise plot ccftime NET.STA1 NET.STA2 -r 0.1:2.0
where NET.STA1 and NET.STA2 are the network and station code of your
stations (sorted alphabetically).
Cheers,
Thomas
Le 17/08/2018 à 08:27, Linda Akromah a écrit :
Thank you for responding.
The x-axis are time lags in seconds.Bandpassed 0.005Hz (low freq) and 2.0
(high frequency).
Regards
Linda
On Fri, 17 Aug 2018, 08:14 Flinders, Ashton <aflinders(a)usgs.gov> wrote:
Is the x-axis seconds or samples? What are the
bandpass frequencies?
-ashton
On Thu, Aug 16, 2018 at 7:35 PM, Linda Akromah <lakromah60(a)gmail.com>
wrote:
_______________________________________________
MSNoise mailing list
MSNoise(a)mailman-as.oma.be
http://mailman-as.oma.be/mailman/listinfo/msnoise Hello
This is a CCF of two stations that are 10km apart.Please tell me what
could
be causing the impulse at the origin.Is it
acceptable?
Kind regards
Linda Akromah
_______________________________________________
MSNoise mailing list
MSNoise(a)mailman-as.oma.be
http://mailman-as.oma.be/mailman/listinfo/msnoise
--
Ashton F. Flinders, Ph.D
U.S. Geological Survey
345 Middlefield Road
Menlo Park, CA 94025
(650) 329-5050
_______________________________________________
MSNoise mailing list
MSNoise(a)mailman-as.oma.be
http://mailman-as.oma.be/mailman/listinfo/msnoise
8:20 a.m.
Hi,
It looks strange, very (too) autocorrelated...
What filters and parameters did you use for msnoise ? Do the daily data
files look OK ?
Cheers,
Thomas
Le 17/08/2018 à 07:35, Linda Akromah a écrit :
Hello
This is a CCF of two stations that are 10km apart.Please tell me what could
be causing the impulse at the origin.Is it acceptable?
Kind regards
Linda Akromah
_______________________________________________
MSNoise mailing list
MSNoise(a)mailman-as.oma.be
http://mailman-as.oma.be/mailman/listinfo/msnoise
8:30 a.m.
I used low freq. of 0.005Hz and high of 2.0Hz bandpass
Kind regards
Linda
On Fri, 17 Aug 2018, 08:20 Thomas Lecocq <Thomas.Lecocq(a)seismology.be>
wrote:
Hi,
It looks strange, very (too) autocorrelated...
What filters and parameters did you use for msnoise ? Do the daily data
files look OK ?
Cheers,
Thomas
Le 17/08/2018 à 07:35, Linda Akromah a écrit :
Hello
This is a CCF of two stations that are 10km apart.Please tell me what
could
be causing the impulse at the origin.Is it
acceptable?
Kind regards
Linda Akromah
_______________________________________________
MSNoise mailing list
MSNoise(a)mailman-as.oma.be
http://mailman-as.oma.be/mailman/listinfo/msnoise
_______________________________________________
MSNoise mailing list
MSNoise(a)mailman-as.oma.be
http://mailman-as.oma.be/mailman/listinfo/msnoise
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5 comments
3 participants
participants (3)
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Flinders, Ashton -
Linda Akromah -
Thomas Lecocq