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

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 FY 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 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 Platforms Bottom Mounts MTRBM TRBM

NOAA’s CENTER for OPERATIONAL OCEANOGRAPHIC PRODUCTS and SERVICES Platforms SUBS 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 DataMetadata Residuals (Non-Tidal) Tidal Constituents Products: Tidal Current Tables Web Predictions tidesandcurrents.noaa.gov Reports Processing

NOAA’s CENTER for OPERATIONAL OCEANOGRAPHIC PRODUCTS and SERVICES Questions? Contact: office: Cell: