Transcript Recent advances in the application of SeaSonde HF Radar (Andrés

CALYPSO 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
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2
QUALITAS REMOS
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
What does
it do?
Surface Currents
Waves & Wind
Tsunami detection
[Paduan, J.D. and L.K. Rosenfeld, Journal of Geophysical Research, vol. 101, 1996]
•
•
Ranges from 10 to more than 300 Km offshore
Resolution dependant on allocated bandwidth
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
What does
it do?
Surface Currents
Waves & Wind
Tsunami detection
Google:
“Bodega Ocean
Observing Node”
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
What does
it do?
Surface Currents
Waves & Wind
Tsunami detection
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
SeaSonde HF Radar, ready to detect tsunamis
1967-1972 Barrick derived theoretical basis for HF current/wave echoes
1972
NOAA Mandate: Stop using linear phased array-style system and
develop a smaller antenna footprint with no loss in data quality
1979
Theory 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
2010
400 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”
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
SeaSonde HF Radar, ready to detect tsunamis
Tsunami
propagation
• 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
Linear shallow-water wave theory:
height & orbital velocity are dependent
vo ( d ) = h4000
1
g 2 4000
d
3
1
4
4
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
SeaSonde HF Radar, ready to detect tsunamis
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
• 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
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”
2012
11th 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”
2013
13th 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?
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
Recent advances around
SeaSonde HF radar
technology
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
Formats:
Codar,
ASCII, GRIB,
netCDF, Data Layers,
Kml, Kmz
Protocols:
OPEnDAP
FTP
WMS
Seemless integration of information into
third party IT systems
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 oscillator
CODAR-patented
GPS-disciplined oscillator
waveform works worldwide
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
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]
SeaSonde Data 07/11/2012 24h
SAMPA HR model 07/11/2012
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
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]
154 km
100 km
232 km
HYCOM 36,000 km2
123 km
HF Radar 12,000 km2
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar
Thanks!
La Valetta – Malta / 29th of August of 2013 / CALYPSO Seminar