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Active Source Data at theIRIS DMC: Current PracticeTonight there will be a REQUEST demo session
after dinner. Tickets still available……
What “Assembled Data” does IRIS have? Discovery
How to request the data, 2 most common methods
User Base
Q&A Tonight
What is available @ DMC406 Unique Data Sets CSS, AH, SAC, PH5, SEG-Y, SEG2, and other (i.e.
Apollo Lunar, VAX, UPD, TRD).
The variety of data formats is why we call these “Assembled” and not just “Active Source”, though SEGY is bulk
Date Range: 1960 (Chile EQ) to 2013
Primary Contributors:
PASSCAL – 200 Including USArray Flex-Array
USGS - 22
OBSIP – 16 (+ JSP, NASA, SEIS-UK, LDEO, DOE, OTHER)
View of DMC Database
Submission Rate (Turbulence is low)
Report No (e.g. 10-001) signifies when data were submitted, not recorded. So these data were submitted to the DMC in 2010. Earliest Report No is 05-001, so submitted in 2005.
2013: Received 14 - Data was recorded between 2002 (Japan Subduction) - 2013
2012: Received 15 - Data was recorded between 1992 (In-Depth) – 2012
2011: Received 23 - Data was recorded between 1991 (Gysers) - 2011
2010: Received 24 - Data was recorded between 2003 (San Bernadino) and 2010
Observation is that data is submitted about 3 years after collected, but highly variable. History of no data management policy that mandated archival. (?)
How to Find Report No.Lists and descriptions of assembled data sets
are here:
http://www.iris.edu/SeismiQuery/assembled.phtml
SeismiQuery Interface Page
When you click “View Results”
MDA, Cont’dIncludes links to reports, whether its Restricted,
etc
2 Types of Request Protocols
1. We will have demos later today, but now you have a start at finding what is available.
Use the Web form: http://www.iris.edu/data/assembled_request.phtml
This creates a request file that is sent to
This is the Web Form
2nd MethodDiscover the Report No. from the database
Create a “breq_fast” format request with an added token line loaded with the Report No. and emailed to [email protected]
How the data are curated/stored
Data are contributed files on disk storage. We are given these in packages, we don’t transform them, & no easy way to subset unless by filename indexing you may retrieve from the accompanying report, in cases.
For example, this is the PASI 2013 SEGY experiment holdings, so someone could ask for UASD-SOCCER file only, but manual and limited:
User Base, orlack thereof
Since documenting user requests in the DMC database in 2006, there have only been 474 requests for “assembled” data
The End
But hopefully, a newbeginning………?
