Developments at ORFEUS and its Data Center
Torild van Eck,
The EC-project MEREDIAN (EVR1-CT-2000-40007) enables the Orfeus Data Centre (ODC)
to restructure and automate its data management and archiving procedures. The aim is
to increase efficiency, i.e. provide more data, more rapidly with the same staff.
The data gathering procedures need to be automated in order to handle the large
diversity of broadband data offered by observatories in Europe and its surroundings
(inventory of ORFEUS WG1).
Both real-time and near real-time data gathering are important elements within this
automation (van Eck et al., 2002).
At the same time ORFEUS has been increasing its role as a co-ordinating organisation
concerning European data exchange, archiving and providing relevant information.
This includes more active participation and co-operation with other international
agencies, like, for example,
Providing assistance in searching and co-ordinating European funding is another
important aspect. However, active involvement of the ORFEUS participants is becoming
increasingly crucial in a succesful operation of ORFEUS. Therefore, we encourage you
to take active part and initiate activities within the ORFEUS framework.
Figure 1. Schematic overview over the data management presently being implemented at
Orfeus Data Centre. The white blocks and broken lines indicate the elements on which we
are presently working. Spyder® will probably disappear in 2003 and be replaced by
the Event data "POND".
New data management structure at the ODC
The data management structure that is presently being implemented at the ODC and
co-ordinated with IRIS-DMC and major European networks is shown in Figure 1.
We have chosen to go ahead full speed in implementing the new elements as soon as
possible. Unfortunately, this also meant that our data services have been temporarily
decreased. However, this summer and autumn we expect to see the first results in
improved data services. Below we provide a short overview over the present status.
the VEBSN, real-time data.
Our future data archive will include a continuous data pool (the Virtual European
Broadband Seismograph Network) with (near) real-time data. This data, presently saved
up to a maximum of 30 days, is available trough AutoDRM (email@example.com).
"POND" data, fast available event data.
Spyder® will be replaced by the event data "POND"
(Pool Of Networked Data). Initially the POND will contain
rapid "five minute" products extracted from the real-time buffer.
This will be replaced by full length event data, i.e. "CURD"
(Collection of UnpRocessed Data) as it becomes available.
At a still later time after the event occurred the POND will also contain the near
real-time data retrieved through an automated AutoDRM procedure.
We aim at providing full SEED volumes, i.e. including full response information.
ODC-volumes, Quality controlled event data.
Automation of data retrieval procedures for archiving of delayed data is a another
major effort in restructuring our data management.
Both the POND data and data arriving in later stages will be quality controlled (QC)
before being archived as ODC-volumes in full SEED. This procedure, together with the
implementation of several automatic procedures should result in QC data being available
faster. The present status of archived data can be seen in Figure 2.
Data access facilities
For the user convenience we aim at a homogeneous data access facility, therefore we
co-ordinate our new web facilities implementations, WILBER II and NetDC, with the IRIS-DMC.
Presently, we support WILBER, AutoDRM and FTP access to our data. Within ORFEUS a
completely revised tutorial and product page is being developed which should provide
a simple and complete overview over the available data and access facilities.
Figure 3 provides an overview of the data access facilities and the current planning.
Figure 2. Status of the Quality Controlled and available event data at the ODC on August 2002.
|| Continuous Data
European-Meditarranean stations, BB data
| Event Data|
European-Mediterranean stations, M > 4.4 (EuroMed area), M > 4.9 (Global), BB Data
~-30 days - present
1)"5 min" (rapid) data
2)full event data
1)"4 min" BB data
2)"30 min" LP data
(Will be replaced by POND data)
QC full event data
|World Wide Web
WILBER ->WILBER II
Figure 3. Schematic overview over the ODC data access facilities and the current planning.
Implemented data access facilities are clickable. Planned data access facilities are in red.
ORFEUS Working Groups
BB siting and station standards
WG1 with Josep Vila as chairman maintains an inventory of the existing and operational
braodband stations within Europe and its surroundings. It also co-ordinates
the station registration and naming with Bruce Presgrave at the
October 23-25, 2002 an ORFEUS workshop "Real-time data exchange in Europe" will take place
in Barcelona under the umbrella of this working group and with financial assistance from the EC
Technical support group for broad-band seismometer users
WG2 with Damiano Pesaresi as chairman provides material and documentation and organises workshops
with the aim to provide technical assistance to those who operate broadband seismograph stations.
Among others ORFEUS aims within this WG2 to organise every other year a workshop
"Installation and operation of broad-band seismograph stations" for station operators,
advanced students in seismology and other people directly involved in practicalities of
modern broad-band seismograph stations.
The next workshop is planned for November 18-21, 2002 in Istanbul, Turkey.
We further promote the availability of technical reports on instrument tests, descriptions,
evaluations, etc, by making these electronically available. Such, often obscure, publications
are extremely useful for observatories and data users. Consequently,
you are encouraged to submit relevant reports to this working group for public availability.
Mobile (broad-band) stations
Paul Denton from SEIS-UK has recently become the chairman and is presently working on
an updated inventory over available mobile equipment and on-going and planned projects.
This working group has been created in order to try to establish a European co-ordination
of data archiving like PASSCAL at IRIS. A revision of the webpage is foreseen.
WG4, co-ordinated with the FDSN working group on software, aims at maintaining the
software libraries and co-ordinating some of the software developments within the European
seismological community. Manfred Baer is chairman. For 2003 an ORFEUS workshop on
"Distributed, Object Oriented Computing for Seismology" is planned in Athens with support
from EC funds within the EMICES project.
Figure 4. Schematic overview over ORFEUS working groups
ORFEUS information and co-ordinating initiatives
Besides the software pages and the working group web pages, we maintain
(presently together with the EMSC) a complete overview over the
seismological observatories in Europe and surroundings.
Further, we created and maintain a seismo-edu web page with links to
electronic educational material and relevant links to serious amator
seismologist activities. We help Steve Malone maintain the seismo-surf pages.
Please, let us (Torild van Eck
or Femke Goutbeek)
know about failed, missed, updated and new links so we can provide a truly
comprehensive and up-to-date service.
ORFEUS Electronic Newsletter
The ORFEUS Electronic Newsletter aims at providing up-to-date relevant information on
projects, observatories, data handling and recent events for seismologists and other
interested people. If you think you could contribute or you would like to see a specific
contribution then, please, let the editors know.
Funding and long-term strategies
ORFEUS aims, together with the EMSC and in close co-operation with the ESC,
at a long term strategy with respect to European waveform data exchange and archiving.
This has resulted in a strategy plan and an expression of interest,
NERIES (Network of
Excellence of Research and Infrastructures for European Seismology) sent to the EC within
their 6th framework activities.
Within the 5th framework, two projects,
EMICES are presently co-ordinated within the ORFEUS
framework. Both projects came forth out of initiatives from within the ORFEUS community.
It is ORFEUS policy to assist also in the future with co-ordination and practical assistance
in relevant projects proposed by ORFEUS participants.
Figure 4. Schematic overview over some of ORFEUS services