The new IGFS Service: “GGP-ICET Service” From the Earth Tides Symposium in Warsaw.

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Presentation transcript:

The new IGFS Service: “GGP-ICET Service” From the Earth Tides Symposium in Warsaw

GGP-ICET Service GGP Database: GFZ/Potsdam (and ICET, EarthCube?...) Mandate: (1)archive, manage, and distribute SG 1 min and 1 sec data (2)make appropriate corrections to 1 min data to arrive at a reliable long-term 1-hr residual gravity series for each GGP station ICET Database: Tahiti Mandate: (1)archive gravity, tilt, strain data (2) produce 1 min corrected SG files (3) produce gravimetric tidal factors for GGP stations Board of Directors Terms of Reference Comment: GGP and ICET will merge into one service with one BoD, and one ToR, but maintain different mandates. ICET will continue its traditional role and send 2 products to GGP. GGP will expand its service to provide a 1-hr corrected series for each GGP station.

GGP-ICET Interim Teams 1. Management Team: Crossley, Hinderer, Pagiatakis – formulate Terms of Reference, Coordinate planning efforts with Harald Schuh 2. ICET Team: Barriot, Ducarme, … - revisit the 1 min corrected data (units of volt, correcting function,) and add gravimetric factors 3. Loading Team: Boy, Wzionteck, … - formulate standard correction for tides (solid + OTL), global atmosphere + mass attraction, global hydrology, polar motion, 4. Database Team: Forste, Ritschel, Barriot, Wziontek, EarthCube …. – Fix minor problems with existing database, formulate modern interface for the Service, following Ritschel’s ETS2013 talk + XML? SG Trend Team: Wziontek, Wilmes, Meurers, … - use AG data to remove best linear (?) trend from SG data, manage offsets and calibration factors 6. Raw Data Team: Palinkas, Rosat, Forbriger, M.V. Camp … - organize collection of 1 sec data from stations, conversion to IRIS miniseed format and system transfer function, provision of noise spectra (method of VP) … Comment: Teams to be established by June 1 and to work over summer to complete tasks.

Proposal to IAG/IGFS The 6 teams will coordinate efforts during August to arrive at a recommended standard processing procedure. This procedure will be applied to a number of stations (e.g. Strasbourg, Wettzell, BFO ….) to produce a long-term 1 hr series. The procedures and results will be circulated to all Station Managers for comments The package to be presented to the IAG in September by a GGP rep (J.P. Boy, H. Wilmes …)