1 / 14

Surface Current Mapping in Lower Chesapeake Bay - CPHN Study Area

This study focuses on surface current mapping in the Lower Chesapeake Bay through a Comprehensive Plan for the Hampton Roads Navigation (CPHN) Study Area. It includes coverage of antenna sites at the Chesapeake Bay Bridge Tunnel (CBBT), featuring 25.4 MHz CODAR Standard Range Antennas. The research area extends to the Ocean View Community Beach (VIEW) and involves analyzing radial coverage antenna patterns and total current vectors within a 2 km grid. Data products are updated hourly and available for download online. The study aims to improve trajectories, plume tracking, and model comparisons for future planning. Various data validation techniques, including comparisons with NOAA ADCP measurements, are performed to ensure accuracy.

taji
Download Presentation

Surface Current Mapping in Lower Chesapeake Bay - CPHN Study Area

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Surface Current Mapping in the Lower Chesapeake Bay <insert movie>

  2. CPHN Study Area & Antenna Sites

  3. Chesapeake Bay Bridge Tunnel (CBBT) AT OUR FIELD SITES 25.4 MHz CODAR Standard Range Antennas with co-located Tx/Rx MiniMac Field Computers Cell phone/Cable modem connections Ocean View Community Beach (VIEW)

  4. Radial Coverage Antenna Patterns CBBT VIEW

  5. Baseline Grid for Total Current Vectors 2 km Grid courtesy of CORDC National Network Preserves orthogonality Red points fail stability angle requirements

  6. Data Products Updated Hourly (http://www.lions.odu.edu/org/cbc) Time Series Sub-tidal Flow Trajectories

  7. Some Q/C Considerations • Totals • GDOP/HFR-Progs Matlab toolbox error estimates • Radials • Codar spatial and temporal variability statistics within the radial file • Both • Visual outliers (check neighboring vectors / apply filter)

  8. Data Validation by Comparison • Baseline (consistency check) • Tide • Moored ADCP • Towed ADCP

  9. Baseline Comparisons Ideal antenna patterns Measured antenna patterns

  10. Tidal Analysis

  11. Moored ADCP Comparison Difference Statistics Red line = CODAR Blue line = NOAA ADCP Black = |NOAA-CODAR| SiteMeanS.Dev Cape Henry 16.2 14.0 Thimble Shoals 13.2 11.2 York Spit 13.9 10.0 (CH) (TS) (YS)

  12. Towed ADCP Comparisons Intensive study at the baseline & comparison with monthly Bay Mouth cruises

  13. Future Plans • Incorporate data into GIS; map with other regional spatial data • Characterize flow patterns • Improve trajectories/ plume tracking • Model comparisons • Web page development : total vectors and time series freely available for download • Shipping channels • Ocean View beaches AVHRR SST Daily Composite, September 24, 2007 from NOAA Coastwatch ChesROMS model output

  14. Acknowledgements • Teresa Garner and Jose Blanco • CIT, MACOORA, NOAA • CODAR support • Advice and assistance from numerous other HF RADAR operators

More Related