Waves from Quantitative Analysis of Specular Reflections from Jingpo Lacus and Kraken Mare
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Transcript of Waves from Quantitative Analysis of Specular Reflections from Jingpo Lacus and Kraken Mare
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Waves from Quantitative Analysisof Specular Reflections from
Jingpo Lacus and Kraken Mare
Jason W. BarnesDepartment of PhysicsUniversity of Idaho
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The T58 Specular Sequence
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Specular Geometry Calculation
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Overview Map
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SouthwesternJingpoLacusMap
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Lake Powell from seat 3D UA 306 LAX-BWICirca 12:38 Local Solar TimeImages ~10s apart(Delta-Phase_Angle between images ~250m/s*10s / 10km ~10 degRalph Lorenz
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Effect of Waves on Specular Solar Image
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The T58 Data, Compressed
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SpecularFootprintsw/waves
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FitQuality
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T59
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T59 Photometric Lightcurve
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T59
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Conclusions
•T58 4-point lightcurve allows us to place an upper limit of 0.2o on the waves present at southwestern Jingbo Lacus•T59 15-point, but less spectacular, lightcurve gives the first possible hints of wave activity on Titan – either changing wind activity or very-long-wavelength waves (but could still be clouds)•Future high-cadence observations with points every 10 seconds across a few hours of specular observation time could really nail wave properties and lake index of refraction & composition; see next talk.