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AUV Observations

CTD, Navigation Microstructure, irradiance AC9, backscatter, irradiance Radcam. AUV Observations. Best data from last 3 days Limited data from first couple of days Power issues limited optical data collection Still need to merge microstructure, optical, and navigation data.

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AUV Observations

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  1. CTD, Navigation • Microstructure, irradiance • AC9, backscatter, irradiance • Radcam AUV Observations • Best data from last 3 days • Limited data from first couple of days • Power issues limited optical data collection • Still need to merge microstructure, optical, and navigation data

  2. Pressure Fluctuations at 2 m and 20 m depths

  3. AUV Missions During Sep 20, 2008 Depth Longitude Latitude Temperature Salinity

  4. Wavenumber Spectra of Irradiance (490nm) at different depths; Sep 20, 2008 1 km 1 cm

  5. Sep 20, 2008: Wavenumber spectra of Temperature in the upper 30 m

  6. AUV Missions during Sep 22, 2008 Depth Longitude Latitude Temperature Salinity

  7. Examples: Temperature and Temperature Gradient Profiles, Sep 22, 2008

  8. Horizontal wavenumber Spectra of Temperature based on level flights

  9. Directional Dependency of Irradiance, based on 2m level flights

  10. Irradiance fluctuations: directional dependence

  11. Example of Temperature Spectra: Sep 22, 2008Spatial scales: O(km) to O(cm) Wave-number = frequency/AUV speed 1 cm 10 km 100 m 1 m

  12. Irradiance Spectra, 490 nm: 4 m and 6 m depths and North-South and East-West Directions; Sep 22, 2008 1cm 1 km Normalized Irradiance Spectra, y=irr490/mean(irr490)-1 Irradiance Spectra [μW/cm2.nm)2/cpm]

  13. Irradiance Fluctuations: Anisotropic in Horizontal Wave-number space Ratio between Spectral Estimates of different directions

  14. Horizontal wavenumber spectra of Irradiance-490 nm: 2 m and 20 m depths and North-South and East-West Directions; Sep 22, 2008

  15. Irradiance Fluctuations: Anisotropic in Horizontal Wave-number space Ratio between Spectral Estimates of different directions

  16. Very high frequency internal waves were observed • Need to account for travel direction of AUV and waves • Need to complete processing of optical data

  17. KLUDGE • AC9, irradiance, radiance, backscatter • Microstructure, irradiance • September 14-17 • Profile or held at fixed depth • Optical data processed

  18. Irradiance Spectra from the KLUGE September 14, 2008

  19. Difference between the two backscattering sensors used • Need to process the time series for spectra • Need to edit for ship shadow effects

  20. Wavenumber Spectra of normalied fluctuations of Irradiance (490nm) at different depths

  21. AUV yo-yo mission: Sep 22, 2008

  22. Examples of Temperature Spectra Wave-number = frequency/AUV speed

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