Nick Falco
2017-08-08 18:58:55
Hello web service users,
The IRIS DMC in collaboration with the IRIS PASSCAL Instrument Center is pleased to announce the addition of three new FDSN compliant web service interfaces. These services are designed to provide an interface to time series datasets, related station metadata, and active (controlled) source event (shot) information stored in the PH5 data archive.
Detailed descriptions of the service endpoints and example queries can be found in the following service documentation:
ph5ws-dataselect - http://service.iris.edu/ph5ws/dataselect/1/
The PH5 Dataselect Web Service can stream waveform data in both miniSEED or optionally as a compressed-zip of SAC formatted files. Users who require data in SEG-Y format will need to use a legacy PH5 Web Form http://ds.iris.edu/pic-ph5/experiment_list.php?EXP, which will temporarily remain active for this purpose. For active source experiments, the PH5 Dataselect service also provides a new request type for requesting data immediately following the times that shots (events) occurred.
ph5ws-station - http://service.iris.edu/ph5ws/station/1/
The PH5 Station Web Service can output station metadata formatted as FDSN StationXML or in a text format.
ph5ws-event - http://service.iris.edu/ph5ws/event/1/
The PH5 Event Web Service can output active source event metadata formatted as QuakeML or in a text format.
The PH5 Dataselect and Station services are designed to work with existing FDSN clients, such as FetchData https://seiscode.iris.washington.edu/projects/ws-fetch-scripts/wiki, FetchMetadata https://seiscode.iris.washington.edu/projects/ws-fetch-scripts/wiki and ObsPy https://github.com/obspy/obspy/wiki.
Among the handful of experiments currently available through the PH5 Web Services is the Community Wavefield Demonstration Experiment https://www.iris.edu/hq/event/wavefields_community_demonstration_experiment. We anticipate the amount of data available through the PH5 Web Services to grow quickly as additional PH5 experiments are added. We encourage users to periodically revisit the services to discover newly added data.
Searching for and accessing data from both the PH5 and primary repository at the DMC can be accomplished using the IRIS Federator http://service.iris.edu/irisws/fedcatalog/1/. For tools supporting the Federator, access to both of these repositories is seamless.
We welcome feedback and questions.
Sincerely,
IRIS Web Services Team
The IRIS DMC in collaboration with the IRIS PASSCAL Instrument Center is pleased to announce the addition of three new FDSN compliant web service interfaces. These services are designed to provide an interface to time series datasets, related station metadata, and active (controlled) source event (shot) information stored in the PH5 data archive.
Detailed descriptions of the service endpoints and example queries can be found in the following service documentation:
ph5ws-dataselect - http://service.iris.edu/ph5ws/dataselect/1/
The PH5 Dataselect Web Service can stream waveform data in both miniSEED or optionally as a compressed-zip of SAC formatted files. Users who require data in SEG-Y format will need to use a legacy PH5 Web Form http://ds.iris.edu/pic-ph5/experiment_list.php?EXP, which will temporarily remain active for this purpose. For active source experiments, the PH5 Dataselect service also provides a new request type for requesting data immediately following the times that shots (events) occurred.
ph5ws-station - http://service.iris.edu/ph5ws/station/1/
The PH5 Station Web Service can output station metadata formatted as FDSN StationXML or in a text format.
ph5ws-event - http://service.iris.edu/ph5ws/event/1/
The PH5 Event Web Service can output active source event metadata formatted as QuakeML or in a text format.
The PH5 Dataselect and Station services are designed to work with existing FDSN clients, such as FetchData https://seiscode.iris.washington.edu/projects/ws-fetch-scripts/wiki, FetchMetadata https://seiscode.iris.washington.edu/projects/ws-fetch-scripts/wiki and ObsPy https://github.com/obspy/obspy/wiki.
Among the handful of experiments currently available through the PH5 Web Services is the Community Wavefield Demonstration Experiment https://www.iris.edu/hq/event/wavefields_community_demonstration_experiment. We anticipate the amount of data available through the PH5 Web Services to grow quickly as additional PH5 experiments are added. We encourage users to periodically revisit the services to discover newly added data.
Searching for and accessing data from both the PH5 and primary repository at the DMC can be accomplished using the IRIS Federator http://service.iris.edu/irisws/fedcatalog/1/. For tools supporting the Federator, access to both of these repositories is seamless.
We welcome feedback and questions.
Sincerely,
IRIS Web Services Team
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Philip Crotwell
2017-08-08 22:47:10Hi
The FDSN web services spec says that:
The following base URI pattern is to be used at each data center
implementing FDSN services:
<site>/fdsnws/<service>/<majorversion>/
so having these services under /ph5ws instead of /fdsnws makes them
not quite compliant with the FDSN spec.
Having the fixed URL pattern makes it easy for clients to simply
change the host and know that everything else is the same. As I spend
a lot of time writing clients and want them to be able to access all
fdsn web services, this change is a concern. Is this intended to
signal a change to the fdsn web service spec, or is compliance with
that part of the spec not longer considered important for these
particular services?
thanks
Philip
On Tue, Aug 8, 2017 at 2:59 PM, Nick Falco <nick<at>iris.washington.edu> wrote:
Hello web service users,
The IRIS DMC in collaboration with the IRIS PASSCAL Instrument Center is
pleased to announce the addition of three new FDSN compliant web service
interfaces. These services are designed to provide an interface to time
series datasets, related station metadata, and active (controlled) source
event (shot) information stored in the PH5 data archive.
Detailed descriptions of the service endpoints and example queries can be
found in the following service documentation:
ph5ws-dataselect - http://service.iris.edu/ph5ws/dataselect/1/
The PH5 Dataselect Web Service can stream waveform data in both miniSEED or
optionally as a compressed-zip of SAC formatted files. Users who require
data in SEG-Y format will need to use a legacy PH5 Web Form, which will
temporarily remain active for this purpose. For active source experiments,
the PH5 Dataselect service also provides a new request type for requesting
data immediately following the times that shots (events) occurred.
ph5ws-station - http://service.iris.edu/ph5ws/station/1/
The PH5 Station Web Service can output station metadata formatted as FDSN
StationXML or in a text format.
ph5ws-event - http://service.iris.edu/ph5ws/event/1/
The PH5 Event Web Service can output active source event metadata formatted
as QuakeML or in a text format.
The PH5 Dataselect and Station services are designed to work with existing
FDSN clients, such as FetchData, FetchMetadata and ObsPy.
Among the handful of experiments currently available through the PH5 Web
Services is the Community Wavefield Demonstration Experiment. We anticipate
the amount of data available through the PH5 Web Services to grow quickly as
additional PH5 experiments are added. We encourage users to periodically
revisit the services to discover newly added data.
Searching for and accessing data from both the PH5 and primary repository at
the DMC can be accomplished using the IRIS Federator. For tools supporting
the Federator, access to both of these repositories is seamless.
We welcome feedback and questions.
Sincerely,
IRIS Web Services Team
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Robert Casey
2017-08-08 20:06:29
Hi Philip-
I may have to leave the particulars to Chad or other FDSN members on this question, but you make an interesting point.
For example, we have endeavored to make MUSTANG 'FDSN-compliant' through familiar path and parameter behaviors, but there is still much that is distinctively MUSTANG.
http://service.iris.edu/mustang/<service>/<version>/
I wonder if there needs to be the distinction between a 'certified' FDSN service and a 'compliant' FDSN service. Or maybe the terms 'compliant' and 'friendly' or something to that effect.
We currently have the PH5 family of services as an adjunct from our main archival service end point so it is clear that this is a different archive. Perhaps this raises the issue of how FDSN services will grow to support heterogeneous datasets.
I think I shouldn't comment more on the matter as this really should reside with the appropriate FDSN working group.
-Rob
On Aug 8, 2017, at 12:48 PM, Philip Crotwell <crotwell<at>seis.sc.edu> wrote:
Hi
The FDSN web services spec says that:
The following base URI pattern is to be used at each data center
implementing FDSN services:
<site>/fdsnws/<service>/<majorversion>/
so having these services under /ph5ws instead of /fdsnws makes them
not quite compliant with the FDSN spec.
Having the fixed URL pattern makes it easy for clients to simply
change the host and know that everything else is the same. As I spend
a lot of time writing clients and want them to be able to access all
fdsn web services, this change is a concern. Is this intended to
signal a change to the fdsn web service spec, or is compliance with
that part of the spec not longer considered important for these
particular services?
thanks
Philip
On Tue, Aug 8, 2017 at 2:59 PM, Nick Falco <nick<at>iris.washington.edu> wrote:
Hello web service users,
----------------------
The IRIS DMC in collaboration with the IRIS PASSCAL Instrument Center is
pleased to announce the addition of three new FDSN compliant web service
interfaces. These services are designed to provide an interface to time
series datasets, related station metadata, and active (controlled) source
event (shot) information stored in the PH5 data archive.
Detailed descriptions of the service endpoints and example queries can be
found in the following service documentation:
ph5ws-dataselect - http://service.iris.edu/ph5ws/dataselect/1/
The PH5 Dataselect Web Service can stream waveform data in both miniSEED or
optionally as a compressed-zip of SAC formatted files. Users who require
data in SEG-Y format will need to use a legacy PH5 Web Form, which will
temporarily remain active for this purpose. For active source experiments,
the PH5 Dataselect service also provides a new request type for requesting
data immediately following the times that shots (events) occurred.
ph5ws-station - http://service.iris.edu/ph5ws/station/1/
The PH5 Station Web Service can output station metadata formatted as FDSN
StationXML or in a text format.
ph5ws-event - http://service.iris.edu/ph5ws/event/1/
The PH5 Event Web Service can output active source event metadata formatted
as QuakeML or in a text format.
The PH5 Dataselect and Station services are designed to work with existing
FDSN clients, such as FetchData, FetchMetadata and ObsPy.
Among the handful of experiments currently available through the PH5 Web
Services is the Community Wavefield Demonstration Experiment. We anticipate
the amount of data available through the PH5 Web Services to grow quickly as
additional PH5 experiments are added. We encourage users to periodically
revisit the services to discover newly added data.
Searching for and accessing data from both the PH5 and primary repository at
the DMC can be accomplished using the IRIS Federator. For tools supporting
the Federator, access to both of these repositories is seamless.
We welcome feedback and questions.
Sincerely,
IRIS Web Services Team
----------------------
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