velocity and strain rate fields across the fault from integration of regional gps networks wp 1.3...

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

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Page 1: Velocity and strain rate fields across the fault from integration of regional GPS networks WP 1.3 Velocity and strain rate fields across the fault from

WP 1.3 Velocity and strain rate fields Velocity and strain rate fields

across the fault from integration across the fault from integration of regional GPS networksof regional GPS networks

Resp. Nicola D’AgostinoResp. Nicola D’AgostinoE. D’AnastasioE. D’Anastasio**, F. Criscuoli, F. Criscuoli**, A. Avallone, A. Avallone**, A. Memmolo, A. Memmolo**, F. Minichiello, F. Minichiello**, G. De , G. De

LucaLuca**, F. Migliari, F. Migliari**, L. Mondiali, L. Mondiali**, F. Radicioni, F. Radicioni****, A. Stoppini, A. Stoppini****, G. Fastellini, G. Fastellini****

* * Istituto Nazionale di Geofisica e Vulcanologia, Centro Nazionale Terremoti Istituto Nazionale di Geofisica e Vulcanologia, Centro Nazionale Terremoti**** Dipartimento Ingegneria Civile ed Ambientale, Perugia (Labtopo) Dipartimento Ingegneria Civile ed Ambientale, Perugia (Labtopo)

DPC S5 - Test site Alto Tiberina fault

Roma, 24 marzo 2010

Page 2: Velocity and strain rate fields across the fault from integration of regional GPS networks WP 1.3 Velocity and strain rate fields across the fault from

ObjectivesObjectives

• 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

Page 3: Velocity and strain rate fields across the fault from integration of regional GPS networks WP 1.3 Velocity and strain rate fields across the fault from

Velocity field – end of 2008Velocity field – end of 2008

After D’Agostino et al., Tectonophysics, 2009

Page 4: Velocity and strain rate fields across the fault from integration of regional GPS networks WP 1.3 Velocity and strain rate fields across the fault from

MURBoptimal siteDeep reinforced concrete pillar (5 m)

Page 5: Velocity and strain rate fields across the fault from integration of regional GPS networks WP 1.3 Velocity and strain rate fields across the fault from

MVALOptimal site Wyatt/Agnew short drilled braced

Page 6: Velocity and strain rate fields across the fault from integration of regional GPS networks WP 1.3 Velocity and strain rate fields across the fault from

MURB Vs. MVAL time series

Antenna change due to lightning

Page 7: Velocity and strain rate fields across the fault from integration of regional GPS networks WP 1.3 Velocity and strain rate fields across the fault from

Velocity field – 2004Velocity field – 2004 CGPS with age > 2.5 yrsCGPS with age > 2.5 yrs

Page 8: Velocity and strain rate fields across the fault from integration of regional GPS networks WP 1.3 Velocity and strain rate fields across the fault from

Velocity field – todayVelocity field – today CGPS with age > 2.5 yrsCGPS with age > 2.5 yrs

Page 9: Velocity and strain rate fields across the fault from integration of regional GPS networks WP 1.3 Velocity and strain rate fields across the fault from

Strain rate from

GPS(to be upgraded with increasing

number of CGPS)

After D’Agostino et al., Tectonophysics, 2009

Page 10: Velocity and strain rate fields across the fault from integration of regional GPS networks WP 1.3 Velocity and strain rate fields across the fault from

Range of geodetic Vs. seismic momentRange of geodetic Vs. seismic moment

Mw > 5.5 last 720 years

sum of geodetic strain rates for different seismogenic thickness

After D’Agostino et al., Tectonophysics, 2009

Page 11: Velocity and strain rate fields across the fault from integration of regional GPS networks WP 1.3 Velocity and strain rate fields across the fault from

Zoom on ATF zone Zoom on ATF zone 5 new installed 5 new installed CGPS stationsCGPS 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

Page 12: Velocity and strain rate fields across the fault from integration of regional GPS networks WP 1.3 Velocity and strain rate fields across the fault from

- 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

For the end of the project, we will provide:

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