PSN-L Email List Message

Subject: Re: How to download SAC binary files from IRIS
From: Bobhelenmcclure@.......
Date: Mon, 16 Jun 2008 22:48:56 EDT


Sorry--I goofed by not checking out my directions for downloading IRIS files=
.
They must have revamped their site recently. Here are the revised=20
instructions:

1.  Go to Wilber II          http://www.iris.edu/cgi-bin/wilberII_page1.pl =20=
 =20
             =20
2.  Select List all events (upper right side)
3   Scroll down to event and click on it
4.  Click on the network for the station you want, then click on Proceed
 at bottom of page
5.  Unselect the stations you do not want =E2=80=93 Make sure the desired=20
station is selected.
6.  On left side of page select BHE, BHN, and BHZ
7.  Check SAC BINARY Individual Files on lower left !!!!!
8.  Bottom middle =E2=80=93 check time before and after P Wave.  However,=20
since you are requesting the SPYDER File, it will only be 60 minutes=20
long. You have to wait 60 to 90 days for the FARM file to get more=20
than 60 minutes.
9.  Bottom right =E2=80=93 Enter a user name, and a request name (event name
 and date are good to use). Enter your name and email address, and don=E2=
=80=99t=20
forget to check to be notified when the file is ready. You don't always get=20
an=20
email, so keep looking at the progress screen. It takes about 5 minutes at=20
most to get the files.  You can download them to your computer. The URL=20
for your data will be:=20
ftp://ftp.iris.washington.edu/pub/userdata/[user name]/[request name].



  Please use my utility "SAC_to_PSN" for conversion. I have modified=20
"SAC_to_PSN" to make velocity the default sensor type if not otherwise=20
specified in the SAC header. Also, select "Sensor Units" for "Y-Scale=20
Display Mode". Find my latest version of the utility at=20

http://bobmcclure90.googlepages.com/winsac

  WinQuake can load SAC files, and also do the conversion, but you will not=20
get=20
the sensor sensitivity number. My utility also transfers magnitude, but it i=
s=20
never given=20
on the network files.  If you use WinQuake to load and view SAC files, never=
=20
try to=20
crop or downsample them. Save them as PSN files, and thereafter use the=20
PSN files for further processing.=20

  My download, "winquake_utilities.zip", also includes "WQFilter.exe". I use=
=20
it=20
exclusively to filter my WinQuake event files. I can convert my short period=
=20
sensor
data to something that resembles data from nearby PAL, which uses the STS-2
sensor.

Cheers,

Bob=20


**************
Gas prices getting you down? Search AOL Autos for=20
fuel-efficient used cars.
      (http://autos.aol.com/used?ncid=3Daolaut00050000000007)
Sorry--I goofed by not checking out=
 my directions for downloading IRIS files.
They must have revamped their site recently. Here are the revised instructio= ns:

1.  Go to Wilber II        &nbs= p; http://www.iris.edu/cgi-bin/wilberII_page1.pl    &nbs= p;             <= BR> 2.  Select List all events (upper right side)
3   Scroll down to event and click on it
4.  Click on the network for the station you want, then click on Procee= d
at bottom of page
5.  Unselect the stations you do not want =E2=80=93 Make sure the desir= ed
station is selected.
6.  On left side of page select BHE, BHN, and BHZ
7.  Check SAC BINARY Individual Files on lower left !!!!!
8.  Bottom middle =E2=80=93 check time before and after P Wave.  H= owever,
since you are requesting the SPYDER File, it will only be 60 minutes
long. You have to wait 60 to 90 days for the FARM file to get more
than 60 minutes.
9.  Bottom right =E2=80=93 Enter a user name, and a request name (event= name
and date are good to use). Enter your name and email address, and don=E2= =80=99t
forget to check to be notified when the file is ready. You don't always get=20= an
email, so keep looking at the progress screen. It takes about 5 minutes at <= BR> most to get the files.  You can download them to your computer. The URL=
for your data will be:
ftp://ftp.iris.washington.edu/pub/userdata/[user name]/[request name].



  Please use my utility "SAC_to_PSN" for conversion. I have modified "SAC_to_PSN" to make velocity the default sensor type if not otherwise
specified in the SAC header. Also, select "Sensor Units" for "Y-Scale
Display Mode". Find my latest version of the utility at

http://bobmcclure90.googlepages.com/winsac

  WinQuake can load SAC files, and also do the conversion, but you will= not get
the sensor sensitivity number. My utility also transfers magnitude, but it i= s never given
on the network files.  If you use WinQuake to load and view SAC files,=20= never try to
crop or downsample them. Save them as PSN files, and thereafter use the
PSN files for further processing.

  My download, "winquake_utilities.zip", also includes "WQFilter.exe".=20= I use it
exclusively to filter my WinQuake event files. I can convert my short period= sensor
data to something that resembles data from nearby PAL, which uses the STS-2<= BR> sensor.

Cheers,

Bob



**************
Gas prices getting you down? Search= AOL Autos for fuel-efficient used cars.
(http://autos.aol.com/used= ?ncid=3Daolaut00050000000007)

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