Operability, coordination and maintenance of the ITGRF
First part (before the coffee break)
Initial talk given by H.Wziontek and S. Bonvalot. The name of presentation:
...
Operability, coordination and maintenance of the ITGRF
...
.
Main topic: ITGRF operation, it means Steering committee and Data and Analysis Centres (maybe also control committee).
ITGRF implementation: topic of session 2 and 3
AGrav database – basic information about new progress and features – new data from Kazakhstan
Discussion about a possible file type for data importing
ITGRF operation
Suggestions for
- Coordination canter
- Steering committee/Consortium
- Maintenance of Guidelines
- Analysis Centres?
Discussion follows:
Importance of some guidelines and some rules for densification was mentioned. Also importance of analysis centres was emphasized (for quality check for example).
The steering committee should distribute the responsibility to the whole community.
There should be specialist for specific task (reference function, etc.)
Suggestion of comparisons analysis centre by Derek – Who will check (and approve) the data from absolute instrument users? Has it been done yet?
There should be list of instruments and list of its measurements at comparisons.
Possibility of fixing of errors in AGrav was mentioned.
Final proposals for:
Steering committee
Traceability centres (reference function)
Regional coordinators
There is importance for clear connection between international and national systems (“political” reasons)
We need time to establish these structure
Date
Second part (after the coffee break)
...
--> Reference stations should be those where gravity is monitored with an uncertainty of 10^-8 (10 muGal) over time.
---> Each GGOS core-stations should have gravity reference at some level in the future. TO BE ADDRESSED through the GGOS core-sites requierements!
2) Categories of reference stations:
...
The Frame is realized through absolute gravity measurements traceable at a reference stations or through comparisons. If that is the case, all measurements of that instrument would be in realize the ITGRF. That would allow to include field absolute stations and would be realizing the ITGRF for a a certain epoch and with a given uncertainty.
...