calypso seminar, 29 th of august of 2013

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

mailto:[email protected]




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


http://www.codar.com/

http://www.qualitasremos.com/

What does SeaSonde do?


[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


Google:“Bodega Ocean Observing Node”

What does it do?


Surface Currents

Waves & Wind

Tsunami detection

Surface Currents

Waves & Wind

Tsunami detection

What does it do?


Surface Currents

Waves & Wind

Tsunami detection

Surface Currents

Waves & Wind

Tsunami detection


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



• 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



• 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



Bathymetric depths, tsunami deepwater heights and orbital velocity lower limits for the purpose of tsunami detection



Tsunami radial vector signature when reaching the coastal shelf without background currents



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



SeaSonde HF Radar, low power + portable!

Less than 250 watts, re-locatable by helicopter


SeaSonde HF Radar, low power + portable!

Why not two units along the Malta Channel?


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


SeaSonde HF Radar, standard and customized value added data products:

Surface Currents Short Term Prediction System


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


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.”


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]”


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]


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]


HYCOM 36,000 km2 HF Radar 12,000 km2

232 km

154 km

123 km

100 km


Thanks!

calypso seminar, 29 th of august of 2013

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