measuring optical properties in case 2 waters: some aop
TRANSCRIPT
![Page 1: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/1.jpg)
Measuring Optical Properties in Case 2 Waters: Some AOP and IOP Considerations
David R. Dana, Chief EngineerRobert A. Maffione, Chief Scientist
HOBI Labs, Inc.
![Page 2: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/2.jpg)
1. Hyperspectral and IOP Measurements
![Page 3: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/3.jpg)
Why IOPs?
Water Constituents
IOPs
AOPs
Satellite Observations
Sun,Weather
Atmosphere,Sensor, platform
![Page 4: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/4.jpg)
Why Hyperspectral Measurements?
![Page 5: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/5.jpg)
Why Hyperspectral Measurements?
![Page 6: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/6.jpg)
Hyperspectral: What’s Different?
• Optical designs and detector characteristics vary• Fiber optic light collectors• Integration time and dynamic range• Data density
![Page 7: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/7.jpg)
2. Bubbles
![Page 8: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/8.jpg)
Calculated VSF of Bubbles
![Page 9: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/9.jpg)
HydroBeta
![Page 10: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/10.jpg)
Bubbles in the Lab
![Page 11: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/11.jpg)
HydroBeta with Bubbles
![Page 12: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/12.jpg)
Bubble VSF Time Series
![Page 13: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/13.jpg)
Bubble VSF Calculated and Measured
![Page 14: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/14.jpg)
HydroProfiler with HydroBeta (etc)
![Page 15: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/15.jpg)
WALRUS in Bubbles
![Page 16: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/16.jpg)
Bubble Experiment Results
• HydroBeta detected characteristic bubble signature, but bubbles dissipated very rapidly.
• WALRUS observations of radiometric parameters also showed substantial, but short-lived, bubble effects.
• Bubble effects persist only if continually replenished by wind or waves.
![Page 17: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/17.jpg)
3. Near-shore Internal Waves
![Page 18: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/18.jpg)
Monterey Bay
![Page 19: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/19.jpg)
Boris BORISBio-Optical
Remotely-operated Instrumented Submersible
![Page 20: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/20.jpg)
Thin Layer in Monterey Bay
![Page 21: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/21.jpg)
Downcast Upcast
The layer shifts - rapidly!
![Page 22: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/22.jpg)
Internal Wave Revealed
Density
Beam attenuation
![Page 23: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/23.jpg)
Optical Effects of a Near-Shore Internal Wave
590 nm
![Page 24: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/24.jpg)
Modeled Lw for a Modulated 2-Layer System
Layer at 10 m
Layer at 5 m
532 nm
![Page 25: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/25.jpg)
The End
![Page 26: Measuring Optical Properties in Case 2 Waters: Some AOP](https://reader034.vdocument.in/reader034/viewer/2022051205/627877ea4a15f955e86bd8ea/html5/thumbnails/26.jpg)
Why Hyperspectral Measurements?