1. Pierre Briole1, Panagiotis Elias2, Giuseppe Puglisi3, Makoto Murakami4
Ground deformation at Etna and MiyakeJima from interferometric PALSAR ALOS data
Pierre Briole1, Panagiotis Elias2, Giuseppe Puglisi3, Makoto Murakami4
(1) Ecole Normale Supérieure, (2) National Observatory Athens, (3) Istituto Nazionale di Geofisica e Vulcanologia, (4) Hokkaido University
ALOS PI Symposium 2008

2. Etna recent lava flows

3. ERS SAR interferogram 1995-1999
J.L. Froger 2000
Data processed with Diapason software

4. PS-Insar at Etna
Offset across the Pernicana fault measured by PS-InSAR and in the field
PS processing: TRE 2002

5. 2006: inflation and eruption in September
Inflation before the eruption of Sept 4, 2006
Processing: ROI-PAC filtered, INGV 2007
ENVISAT 11 May 2005 – 26 April 2006

6. 2007: summit eruptions, inflation, creep along faults
April 2007 summit activity
Ground deformation from GPS data
Processing at INGV-CT with ROI-PAC and GAMIT
ENVISAT - 7 Nov 2007 – 26 Mar 2008

7. 11 available ascending PALSAR scenes
eruption

8. ALOS 30 Oct 2007 – 15 Dec 2007 (245m)

9. ALOS 27 Jan 2007 – 16 Sept 2008 (1309m)

10. Creep along Pernicana fault

11. 27/1/2007 – 16/9/2008 (18 months)

12. Coherence and subsidence of lava flows

13. 30/10 – 15/ (1.5 months)

14. 27/1/2007 – 16/9/2008 (18 months)

15. Valle del Bove (2006 & 2008 eruptions area)

16. 30/10 – 15/ (1.5 months)

17. 27/1/2007 – 16/9/2008 (18 months)

18. MiyakeJima volcano
Last eruptions : 1940, 1962, 1983, 2000

19. Ground motion 1998-2008 (horizontal)
GSI, 2008

20. Ground motion 1998-2008 (vertical)
GSI, 2008

21. Ground motion 2007-2008 (horizontal)
GSI, 2008

22. Ground motion 2007-2008 (vertical)
GSI, 2008

23. 8 available ascending PALSAR scenes

24. 8 available descending PALSAR scenes

25. MiyakeJima volcano

26. 30 Oct 07 – 15 Dec 07 – A.261m (1.5 months)

27. 11 Sep 06 – 30 Jul 07 – A.625m (10.5 months)

28. 12 Sept 06 – 17 Sept 08 – D.280m (24 months)

29. Conclusions No ground motion detected at MiyakeJima volcano
Various phenomena at Etna, like with Cband observations (classical or PS) but coherence better in all types of surfaces
All baselines work but much better results with short baselines
3-4mm detectability for SW with standard software (close to Cband), LW detectability linked to atmosphere (like in Cband)
Ascending PALSAR data acquired regularly would be great for ground deformation monitoring
Quick-looks at

30. Thanks to JAXA for having
Yes, we can!
Thanks to JAXA for having
made ALOS