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NOAA’s CENTER for OPERATIONAL OCEANOGRAPHIC PRODUCTS and SERVICES NOAA/NOS/CO-OPS Maritime Services Current Observation Project San Francisco Bay and Vicinity Carl Kammerer Project Lead
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NOAA’s CENTER for OPERATIONAL OCEANOGRAPHIC PRODUCTS and SERVICES
NOAA/NOS/CO-OPSMaritime Services
Current Observation ProjectSan Francisco Bay and Vicinity
Carl KammererProject Lead
NOAA’s CENTER for OPERATIONAL OCEANOGRAPHIC PRODUCTS and SERVICES
Background
• NOAA is in the process of developing a hydrodynamic model of San Francisco Bay (outside the Gate to Antioch/Rio Vista).
• CO-OPS will be surveying currents in support of this modeling effort.
• Whenever possible, CO-OPS wants to leverage resources to meet the needs of many. In addition to modeling, accurate and relevant tidal current data supports:• Navigation• Resource Protection• Engineering (energy, bridges, etc.)• Restoration/remediation• Recreation
NOAA’s CENTER for OPERATIONAL OCEANOGRAPHIC PRODUCTS and SERVICES
Tentative Plans
FY2011 - User Meetings and Reconnaissance.• On-water recon at potential sites identifies:
– Bottom Type– Depth– Salinity– Traffic/Usage
• We also determine possible staging locations and capable vessels.
NOAA’s CENTER for OPERATIONAL OCEANOGRAPHIC PRODUCTS and SERVICES
Tentative Plans
2012 and 2013 we plan on conducting a current observation survey.
• 25 stations in 2012• 20 stations in 2013• Data are analyzed after recovery of instruments• New/updated predictions will follow a year later
– Special predictions can be made available sooner if needed.
NOAA’s CENTER for OPERATIONAL OCEANOGRAPHIC PRODUCTS and SERVICES
Model-Driven (teal)
& Historic Locations (white)
NOAA’s CENTER for OPERATIONAL OCEANOGRAPHIC PRODUCTS and SERVICES
6 Reference & 3 Active PORTS® Stations
NOAA’s CENTER for OPERATIONAL OCEANOGRAPHIC PRODUCTS and SERVICES
• Based on user requests from– Other Federal, State and Local Government Organizations– Professional Mariners– Other Marine Organizations– Public
• Oceanographic Significance• Historic Locations• International Hydrographic Organization (IHO)
recommended criteria.
Additional Locations
NOAA’s CENTER for OPERATIONAL OCEANOGRAPHIC PRODUCTS and SERVICES
Method
• Measurements will be made with acoustic Doppler current profilers (ADCP):– They are self contained (not real-
time).– They will be upward looking.– There will be no cabling or
infrastructure requirements.
NOAA’s CENTER for OPERATIONAL OCEANOGRAPHIC PRODUCTS and SERVICES
There are 2 basic types of platforms that will be used for this survey:
• Bottom Mounted– Shallower water ( <100 feet )– Where trawling is present
• Taut-Line Subsurface Buoy (SUBS)– Deeper Water– No Trawling or other impacts– Does have some motion with currents.
• There will be no surface presence from either platform.
Platforms
NOAA’s CENTER for OPERATIONAL OCEANOGRAPHIC PRODUCTS and SERVICES
• Less than .75 meters high– TRBM– MTRBM– ES2– Recovered in entirety
via acoustic release
PlatformsPlatformsBottom Mounts
MTRBMTRBM
NOAA’s CENTER for OPERATIONAL OCEANOGRAPHIC PRODUCTS and SERVICES
PlatformsSUBS
Taut-Line Subsurface Buoy• From a few meters to tens of
meters, depending upon requirements
• Float with ADCP• Second buoy if needed for
floatation• Acoustic Release• Chain/cable (left on bottom)• Anchor (typically steel- left
on bottom)
NOAA’s CENTER for OPERATIONAL OCEANOGRAPHIC PRODUCTS and SERVICES
• Deployment– About 15 minutes on site, depending upon conditions and
platforms type.– Arrive on station & check traffic.– Lower or free fall to bottom.
• Typical vessel has A-Frame or crane with a winch.
– CTD cast.– Record required metadata
• Date, time, lat and long, depth, etc.
• 35 to 70 days on bottom – Again… no surface presence.
SURVEY
NOAA’s CENTER for OPERATIONAL OCEANOGRAPHIC PRODUCTS and SERVICES
• Recovery– About 30 minutes on site, depending upon conditions and
platforms type.– Arrive on station & check traffic.– Signal acoustic release.
• Recover using winch and A-frame or if bottom mount• Recover by hand or winch & crane for SUBS
– CTD cast.– Record required metadata
• Date, time, lat and long, depth, etc.
• Data are downloaded and transferred to CO-OPS in Silver Spring, MD.
SURVEY
NOAA’s CENTER for OPERATIONAL OCEANOGRAPHIC PRODUCTS and SERVICES
Raw Data
Metadata
Residuals (Non-Tidal)
Tidal Constituents
Products:Tidal Current Tables
Web Predictionstidesandcurrents.noaa.gov
Reports
Processing
NOAA’s CENTER for OPERATIONAL OCEANOGRAPHIC PRODUCTS and SERVICES
Questions?
Contact: [email protected]
office: 603-862-3285Cell: 301-908-1545
