CALYPSO Seminar, 29th of August of 2013CALYPSO Seminar, 29th of August of 2013
“Recent advances in the application of SeaSonde HF Radar technology to improve Operational Oceanography capacity”
Jorge Sánchez, [email protected] 1
Andrés Alonso-Martirena, [email protected] 1 Laura Pederson, [email protected] 2 Chad Whelan, [email protected] 2
1 QUALITAS REMOS2 CODAR OCEAN SENSORS
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
Who are CODAR and QUALITAS
• CODAR OCEAN SENSORS www.codar.com is a high technology
company founded in 1985 with headquarters in Mountain View,
California
• CODAR OCEAN SENSORS is the world leading manufacturer of HF
Radar technology for ocean monitoring having more than 400
references worldwide
• A European office in alliance with the engineering company
QUALITAS www.qualitasremos.com provides highest quality support
within Europe + Middle East + Africa
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
What does SeaSonde do?
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
[Paduan, J.D. and L.K. Rosenfeld, Journal of Geophysical Research, vol. 101, 1996][Paduan, J.D. and L.K. Rosenfeld, Journal of Geophysical Research, vol. 101, 1996]
Surface Currents
Waves & Wind
Tsunami detection
Surface Currents
Waves & Wind
Tsunami detection
What does it do?
• Resolution dependant on allocated bandwidth
• Ranges from 10 to more than 300 Km offshore
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
Google:“Bodega Ocean Observing Node”
What does it do?
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
Surface Currents
Waves & Wind
Tsunami detection
Surface Currents
Waves & Wind
Tsunami detection
What does it do?
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
Surface Currents
Waves & Wind
Tsunami detection
Surface Currents
Waves & Wind
Tsunami detection
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
1967-1972 Barrick derived theoretical basis for HF current/wave echoes
1972NOAA Mandate: Stop using linear phased array-style system and develop a smaller antenna footprint with no loss in data quality
1979Theory for Tsunami detection based on HF Radar presented by Dr Barrick at NOAA/ERL Wave Propagation Laboratory, Boulder, Colorado
1984-1994 Development of a compact HF Radar: the SeaSonde® by CODAR
2010400 SeaSonde sites along the world, Tsunami software implemented in some in the US, India, Japan, Thailand, Vietnam
2011
11th of March: “Following the magnitude 9.0 earthquake off Sendai the Usujuri and Kinaoshi SeaSonde HF Radars & mutliple additional SeaSondes along the US Coast operating at multiple frequencies detect for the first time a Tsunami”
SeaSonde HF Radar, ready to detect tsunamis
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
SeaSonde HF Radar, ready to detect tsunamis
• A Tsunami is a shallow-water gravity wave that travels at v = √(g x d)
• The Tsunami orbital velocity appears as a band of surface currents approaching & receding from the HF Radar
Tsunami propagation
Linear shallow-water wave theory: height & orbital velocity are dependent
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
SeaSonde HF Radar, ready to detect tsunamis
• The under laying ocean surface current which we are normally interested in
• The phase velocity of the typical ocean waves which we know through the deep water relation
• On top of both => The orbital velocity of the tsunami wave which now interests us
SeaSonde is able to detect a tsunami based on the orbital velocity of the tsunami wave
Doppler velocity measurement is made out of 3 components
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
SeaSonde HF Radar, ready to detect tsunamis
Bathymetric depths, tsunami deepwater heights and orbital velocity lower limits for the purpose of tsunami detection
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
SeaSonde HF Radar, ready to detect tsunamis
Tsunami radial vector signature when reaching the coastal shelf without background currents
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
SeaSonde HF Radar, ready to detect tsunamis
Successful SeaSonde Tsunami offline detections
2011
11th of March: “Following the magnitude 9.0 earthquake off Sendai the Usujuri and Kinaoshi SeaSonde HF Radars & multiple additional SeaSondes along the US West Coast operating at multiple frequencies detect, for the first time, a Tsunami”
201211th of April: “A magnitude 8.6 undersea earthquake struck off the Indonesian province of Aceh and a weak tsunami wave was generated that was detected by the SeaSonde HF radars along Sumatra coast”
201313th of June: “A Meteotsunami that caused damages along the US New Jersey coast was detected for the first time by a SeaSonde HF radar”
Next to come?
Recent advances aroundSeaSonde HF radar
technology
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
SeaSonde HF Radar, low power + portable!
Less than 250 watts, re-locatable by helicopter
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
SeaSonde HF Radar, low power + portable!
Why not two units along the Malta Channel?
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
SeaSonde HF Radar, provides a world of utilities through a user friendly Google maps based web
interface to foster HF radar data value
Seemless integration of information into third party IT systems
Formats:Codar, ASCII, GRIB, netCDF, Data Layers,Kml, Kmz
Protocols:OPEnDAPFTPWMS
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
SeaSonde HF Radar, standard and customized value added data products:
Surface Currents Short Term Prediction System
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
Modulation Multiplexing: •Share Frequency bands
•Multiple systems can sweep through the same band without interfering
•No need to stop data collection for critical applications when other sites transmit
•Multi-Static Operation•Turn 3 radars into 6
•Enhanced coverage and data quality of 2D currents
•Requires 10-11 precision oscillatorCODAR-patented GPS-disciplined oscillator waveform works worldwide
SeaSonde HF Radar, recent news flashes
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
Oil spill response: EU TOSCA project conclusions
“Experimental campaigns have proven the benefit of HF radars as a powerful tool to provide satisfactory estimation of transport and to improve our response to oil-spill and SAR emergencies.”
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
Oil spill response: Analysis Deepwater Horizon
“A substantially better lagrangian prediction skill of the HFR-derived currents is not surprising, because the considered models are not constrained by surface velocity data and also do not account for processes affecting the transport by near-surface currents such as Stokes drift and small-scale turbulent wind–wave interactions. [Yaremchuk, Deep Sea Res. II, 2013]”
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
Model improvement: PDE keynotes
“High resolution models and HF radar observing are substantially helping enhance safety associated to navigation and harbor operations .” [Enrique Alvarez, PDE]
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
SeaSonde Data 07/11/2012 24h SAMPA HR model 07/11/2012
Search And Rescue: U.S. Coast Guards SAROPS
“Using HF radar, the USCG has the potential to increase this success rate to 48 - 67%, thereby saving 26-45 additional people every year” [Arthur Allen, USCG]
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
HYCOM 36,000 km2 HF Radar 12,000 km2
232 km
154 km
123 km
100 km
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
Thanks!