[dhi-servers] Re: XI.TEND response problem

[Philip Crotwell]

Hi

I ran your recipe and although I did not get nearly as much data as
you would like, I did get seismograms from some XP stations, N060,
N076, N084, N092, N100, N108, N116, N124, N132 and TIMW.

Looks to me like there are two problems here. First, although you do
get responses for some XP stations with your find_response call, some
stations do not. For example, these stations do not return responses,
and so likely have either missing or invalid response information in
the DMC database.
XP.E004
XP.ARHT
XP.CBOB
XP.N036
XP.DIHI

One trick you might try to get sod to run faster is to use a
<hasResponse/> channel subsetter in the networkArm. This way a channel
with no response will fail once at the begining and sod will not waste
time processing it for each event. In general sod runs faster if you
can fail items early (such as a channel in the network arm) where it
happens once instead of later (such as every event-channel pair for
that channel) where it must happen repeatedly.

The second problem seems to be with the Pond, because it doesn't
return any data to sod's request for some stations. I also checked
with Wilber, and although it claims that it has data for stations in
the XP network, when I click an XP station like JNCT, (for Event Name:
20020102_172248.7.farm) Wilber says:
    Unable to generate plots at this time. Sorry.
No idea of what this actually means, but seems possible that the same
problem preventing the Pond DHI server from returning data to SOD is
also preventing WIlber from generating images of the seismograms.

One way around the second issue may be to use the IRIS_DataCenter
instead of the IRIS_PondDataCenter. This server goes to the big disk
raid and has access to almost all dmc data, as opposed to just the
larger events that are in the Pond. I am not sure, but the XP data in
the big raid may be more accessible.

I am cc'ing this to the DHI servers list. Hopefully someone at the DMC
will be able to help you figure out the response problem and/or if
there is a problem with the Pond.

Let me know if you have any further troubles with SOD.

thanks,
Philip

On Fri, Apr 25, 2008 at 4:39 PM, Jesse Lawrence <jflawrence at stanford.edu> wrote:
> Philip,
>
>  Below is just an example of which I have several:
>
>  1) When I run find_responses the response I receive the response.
>
>     E.g.: find_responses -R -180/180/-90/-70 -b 2001 -e 2003
>
>  2) When I run sod data request WITHOUT the <transferResponse> option I
>  receive the XP data (TAMSEIS.xml attached here).
>
>  3) When I run sod data request WITH the <transferResponse> option I receive
>  no XP data (TAMSEIS_w_transfer.xml attached here).
>
>  This appears to be true for almost all X* network data. Am I doing something
>  wrong? The data appears to be there. The responses appear to be there.
>
>  Sorry to be an inconvenience. I greatly appreciate your help on this.
>
>  Cheers,
>  -Jesse
>
>
>