Environmental monitoring, maritime safety and security: a convergence

Transcription

1 NURC - Partnering for Maritime Innovation Environmental monitoring, maritime safety and security: a convergence VISO workshop, June 2009 Tromsø, Norway Dr. M. Rixen [email protected]

2 Deep sea observatories: Specific challenges Pressure Remote Endurance Maintenance Communications Unknown environmental conditions 2

3 Limited observations in the 4D box Observations Numerical models Data assimilation = Dynamical interpolator 3

4 Univariate correlations 4 Horizontal (top) and vertical (bottom) correlation between the SST (44 20N, 8 48E) with T elsewhere in the Provençal basin (after Barth et al, 2007)

5 Multivariate covariances Covariance between the SLA of a point in the Provençal Basin (42 30N, 8 E) and SST in the Mediterranean Sea (after Barth et al, 2007) 5

6 DART06 (Dynamics of the Adriatic in Real-Time) SEPTR data in NRT on the web High bandwidth Ship-NURC satellite link NURC 6 GEOS II Mirror Time based scheduled synchronizations GEOS II

7 Which forecast (24 hrs) is best? Models Models Data 7 Can we do better?

8 Super-ensemble predictions (SE): combining all models and data Prediction error Uncertainty Best num. models Ensemble spread SE (-60%) SE (-75%) 8

9 Concept Characterize uncertainties/covariances Focused observations when/where required Degrees of freedom = autonomous platforms 9

10 Examples of AUV Systems Speed Endurance 4 knots 3 knots 1 knot Hours Days Weeks - Months Gavia Hugin 1000 Gliders REMUS 100 Sea Otter Mk 1 10 MUSCLE (Bluefin 21)

11 AUV capability overview Basic Advanced Perform underwater missions following preprogrammed path No human operator in the control loop Carry different sets of environmental and imaging sensors Communicate with surface station Real-time data processing and analysis High level of autonomy: adaptive behavior Cooperative behavior among different AUVs 11

12 AUV current performance Able to perform useful missions endurance of >12h is being achieved by 9, 12 and 21 systems (40 to 700kg) typical speeds of 3 6kt navigation error growth < 0.1% distance travelled coverage rate of ~0.2NM 2 /hour data available following post mission analysis increasing levels of reliability Launch and recovery should be improved 12

13 Archeological survey with MUSCLE: synthetic aperture sonar (SAS) Offers potential of: enhanced range improved resolution improved contrast Presented images are at 25 x 40mm resolution ranges out to 150m in 20m water 13

14 Gliders Because: Reduced number of ships Reduced staffing Increased fuel cost Advantages: autonomy low maintenance high endurance low cost low risk real-time covert expandable deployability interoperable scalability to target cost, schedule, performance 14

15 Glider command & control room Environmental data Navigation data 15

16 +IT MINEX 16

17 Hybrid Gliders-AUV: FOLAGA Glider AUV COTS, 100K, endurance In-house, 20K, maneuverable 17 +wings= In-house hybrid glider/auv: endurance + maneuverability

18 Example of architecture: Mix of fixed and moving platforms for maritime security and safety Acquisitore Multipurpose Al sistema di assimilazione Sensoristica terrestre Telecamere/Radar Mezzo di superficie con Radio link/ SAT link Boa con Radio link/sat link Piattaforma mobile autonoma (tipo glider/auv) Acquisitore Multipurpose Array idrofoni banda acustica (20 Hz 80 khz) Nodo Subacqueo Modem acustico Nodo Subacqueo Profilatore corrente CTD + sensori ottici Nodo Subacqueo Profilatore corrente Nodo Subacqueo Dorsale in Fibra Ottica Acquisitore Multipurpose Acquisitore Multipurpose Piattaforma Trawl safe (tipo SEPTR) Piattaforma Trawl safe (tipo SEPTR) Modem acustico Acquisitore Multipurpose 18 Array sensori banda sismica (DC 6 khz) Sistemi/Reti di sensori subacquei Piattaforma eterogenea (tipo NGAS)

19 Decision support system for autonomous platforms Environmental conditions Winds Waves Currents Ship traffic May impact AUV operations: Surface and underwater drift Communications Collisions Stealing 19 Minimize risk to platform: Mission planning Adaptive sampling

20 Information services OGC compliant Service oriented architecture (SOA) Web services Remote Sensing METOC models Data Fusion & Decision Support System Web-GIS On-site observ. 20

21 REP10, Alboran Sea, Gulf of Cadiz 20+ gliders Alliance+Quest+Roebuck 20+ partners AIS HF radar Glider track SLA currents Temperature 21

22 Next focus Arctic ice-edge: EEZs, climate-change, energy and environmental security, SLOCs, AUV technology pushed to limits Maritime safety and security: search and rescue, oil spills, 22

23 23 Questions?

24 24 AUV projects at NURC