PSN-L Email List Message

Subject: RE: Long-period vs short-period instruments
From: "Bob Hancock" carpediem1@.........
Date: Tue, 12 Sep 2006 12:34:14 -0700

Chris -

IRIS has published software suitable for a PC that allows you to download
data from the IU and other networks.  The program is written in JAVA. And
very useable although there is a learning curve for proficiency. The program
is called VASE, and the link for the program is

Another source for IRIS data is Wilber II at the following link

You can download files in SAC binary format and once downloaded you can
resave as PSN Type 4 files and filter to your heart's content.

Bob Hancock
Three Points, AZ

-----Original Message-----
From: psn-l-request@.............. [mailto:psn-l-request@............... On
Behalf Of John or Jan Lahr
Sent: Tuesday, September 12, 2006 12:13
To: psn-l@..............
Subject: Re: Long-period vs short-period instruments

Hi Chris,

I'm just displaying images that are generated at the USGS Albuquerque 
Seismic Lab
(ASL).  The 10 to 40 s band would be an interesting comparison, but I 
don't have the raw data
to generate such a plot.  I the data is available from 
so someone with the right filtering software could generate such a plot.


At 08:37 AM 9/12/2006, you wrote:
>In a message dated 2006/09/12, JohnJan@........ writes:
>>A few times the question has come up about which events can be seen
>>on short period versus a long period instruments.
>>I've set up a page with images of the broad-band station COR, which
>>is run by the USGS
>>and Oregon State 
>>Clicking on this image toggles between short-period- and
>>long-period-filtered versions.
>Hi John,
>        Not many of us have instruments which go to 1000 sec. Can 
> you show us what the 10 to 40 sec band looks like in comparison, please?
>        Regards,
>        Chris Chapman


Public Seismic Network Mailing List (PSN-L)


Public Seismic Network Mailing List (PSN-L)

[ Top ] [ Back ] [ Home Page ]