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WP 1.3 Velocity and strain rate fields across the fault from integration of regional GPS networks

DPC S5 - Test site Alto Tiberina fault. WP 1.3 Velocity and strain rate fields across the fault from integration of regional GPS networks. Resp. Nicola D’Agostino

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WP 1.3 Velocity and strain rate fields across the fault from integration of regional GPS networks

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  1. DPC S5 - Test site Alto Tiberina fault WP 1.3 Velocity and strain rate fields across the fault from integration of regional GPS networks Resp. Nicola D’Agostino E. D’Anastasio*, F. Criscuoli*, A. Avallone*, A. Memmolo*, F. Minichiello*, G. De Luca*, F. Migliari*, L. Mondiali*, F. Radicioni**, A. Stoppini**, G. Fastellini** * Istituto Nazionale di Geofisica e Vulcanologia, Centro Nazionale Terremoti ** Dipartimento Ingegneria Civile ed Ambientale, Perugia (Labtopo) Roma, 24 marzo 2010

  2. Objectives • integrate GPS data from regional GPS networks • homogeneous velocity field in terms of data processing and reference frame alignment • distribution of the tectonic strain rate and the rate of strain accumulation of known active faults

  3. Velocity field – end of 2008 After D’Agostino et al., Tectonophysics, 2009

  4. MURB optimal site Deep reinforced concrete pillar (5 m)

  5. MVAL Optimal site Wyatt/Agnew short drilled braced

  6. MURB Vs. MVAL time series Antenna change due to lightning

  7. Velocity field – 2004CGPS with age > 2.5 yrs

  8. Velocity field – todayCGPS with age > 2.5 yrs

  9. Strain rate from GPS(to be upgraded with increasing number of CGPS) After D’Agostino et al., Tectonophysics, 2009

  10. Range of geodetic Vs. seismic moment sum of geodetic strain rates for different seismogenic thickness Mw > 5.5 last 720 years After D’Agostino et al., Tectonophysics, 2009

  11. Zoom on ATF zone 5 new installed CGPS stations • 4 new RING sites > 2.5 years old for ATF transect • ATFO already active (since July 2009) • 4: monument is done, will start logging today • + 1 (or 2) to be done

  12. For the end of the project, we will provide: • - Updated Time series of the ATF sites • Updated GPS velocity field of the region in both ITRF05 and Eurasia reference frames • Updated map of strain rates • Updated geodetic moment rate at the ATF sites

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