The Safety project: Updating geohazard activity maps with Sentinel-1data

Transcription

1 The Safety project: Updating geohazard activity maps with Sentinel-1data Oriol Monserrat a, Safety Consortium a Centre Tecnològic de Telecomunicacions de Catalunya (CTTC/CERCA), Division of Geomatics, Barcelona, Spain ECHO/SUB/2015/718679/Prev02-SAFETY Project Co-financed by the EU-Union Civil Protection Mechanism Fringe 2017, Helsinki 5 June

2 Sentinel-1 for Geohazard regional monitoring and forecasting 01/01/ /01/2018 Developing and testing a procedure to provide Civil Protection Authorities (CPA) with the capability of periodically evaluating and assessing the potential impact of geohazards (volcanic activity, landslides and subsidence) on urban areas and infrastructures, over regional areas. 2 2

3 Sentinel-1 for Geohazard regional monitoring and forecasting 01/01/ /01/2018 Developing and testing a procedure to provide Civil Protection Authorities (CPA) with the capability of periodically evaluating and assessing the potential impact of geohazards (volcanic activity, landslides and subsidence) on urban areas and infrastructures, over regional areas. 2 3

4 Why Sentinel-1? Regular worldwide coverage High temporal sampling (6/12 days) Free access 4

5 Challenges 1) Readability 2) Reliability 3) Regional scale Main constraining factors: 1) Spatio-temporal noise (i.e. the map sensitivity) 2) Huge number of information (PSs) 5

6 Safety Project Developed procedure 6

7 Safety Project Developed procedure 7

8 Safety Project Developed procedure 8

9 Safety Project Developed procedure 9

10 Safety Project Developed procedure 10

11 Summary of Presentation Main activities and results

12 Test Sites 12

13 Study Areas Canary Islands Tenerife Gran Canaria La Gomera Total land area around km 2 13

14 Study Areas Volterra municipality (Tuscany Region, Italy) Volterra Saline di Volterra Municipality area of about 250 km 2 14

15 Canary Islands Study Areas Volterra Municipality Main Hazards Main Lithologies Volcanic Rockfall Lavas Pyroclastics Main Land Coverage/use Sparse vegetation Bare soil/lava Data availability Low Radar Response High coherence Landslide Clays Sands Main Hazards Main Lithologies Main Land Coverage/use Agriculture/Pasture Forest Data availability High Radar Response Low coherence 15

16 Safety Project Deformation Activity Map and HotSpots Map 16

17 Deformation Activity Map Active Areas (HotSpots) Extraction N o of PS Median Velocity [mm/yr] Maximum Velocity [mm/yr] Minimum Velocity [mm/yr] Mean deformation [mm] Velocity Class Quality Indexes 17

18 Deformation Activity Map Canary Islands a a 2σ= 4 mm/yr 18

19 Active Deformation Areas (HotSpot) map Canary Islands 19

20 Deformation Activity Map Volterra Volterra city 20

21 Deformation Activity Map Volterra DESCENDING ASCENDING 2σ= 3 mm/yr 21

22 Deformation Activity Map Volterra DESCENDING ASCENDING 2σ= 3 mm/yr 22

23 Deformation Activity Map Volterra DESCENDING ASCENDING 2σ= 3 mm/yr 23

24 Active Deformation Areas (HotSpot) map Volterra DESCENDING 24

25 Safety Project Geodatabase and Susceptibility Analysis 25

26 Geodatabase Volterra DEM Geological map CORINE Land Cover Landslide Inventory Map (LIM) Elements at risk catalogue 26

27 Landslide Susceptibility Map Volterra Pixel based LAND-SE Susceptibility maps Polygon based r.slopeunits 27

28 Volcanic susceptibility contours Geodatabase Canary Islands Elements at risk catalogue DEM 28

29 Safety Project Geohazard Activity Map: HotSpots + Geohazard inventory 29

30 Geohazard activity map: HotSpots + Landslide Inventory (LIM) Volterra - Landslide Le Colombaie Il Cipresso Fontecorrenti 30

31 Geohazard activity map: HotSpots + Landslide Inventory (LIM) Volterra - Landslide Le Colombaie Il Cipresso Fontecorrenti 31

32 Spatial probability of hosting a volcanic vent Geohazard activity map: HotSpots + Vulcanic susceptibility Tenerife - Vulcanic Geohazard Activity Map 32

33 Geohazard activity map: HotSpots + Slope classification Tenerife - Landslide Teide and Pico Viejo 33

34 Safety Project Vulnerable Element Activity Map: HotSpots map + Vulnerability map 34

35 Vulnerable Element Activity Map: VEAM - Prevention 35

36 Vulnerable Element Activity Map: VEAM Prevention Emergency Recovery 36

37 Deformation Activity Map Summary & work in progress HotSpots Map Geohazard Activity Map Vulnerable Elements Activity Map Le Colombaie Il Cipresso Fontecorrenti 37

38 Contact: Anna Barra, Tel.: (+34) SAFETY TRAINING November 2017 Escuela Nacional de Protección Civil, Madrid (Spain) SAFETY WORKSHOP 29 November 2017 Instituto Geográfico Nacional, Madrid (Spain) Paper under preparation: Barra, A., Solari, L., Bejar, M., Monserrat, M., Bianchini, S., Herrera, G., Crosetto, M., González- Alonso, E., Mateos, R. M.. Geohazard activity map generation based on Sentinel 1 images 38

39 Thanks for your kind attention! 39

40 Contact: Anna Barra, Tel.: (+34) SAFETY TRAINING November 2017 Escuela Nacional de Protección Civil, Madrid (Spain) SAFETY WORKSHOP 29 November 2017 Instituto Geográfico Nacional, Madrid (Spain) Paper under preparation: Barra, A., Solari, L., Bejar, M., Monserrat, M., Bianchini, S., Herrera, G., Crosetto, M., González- Alonso, E., Mateos, R. M.. Geohazard activity map generation based on Sentinel 1 images 40