A time series of landsat 8 images
at San Lorenzo Channel, Baja California


LANDSAT 8 OLIP 
 
Using the Panchromatic band for water column correction
to derive water depth and spectral bottom signature:

Landsat 8 OLIP bandset used for this work

Purple=1Blue=2Green=3PAN=4Red=5NIR=6 and SWIR1=7
Collaboration with 
Fabio Favoretto, Ph.D Student, Coralline Algae Ecology
Grupo Interdisciplinario de Ciencia Ambiental, Universidad Autonoma de Baja California Sur
Carretera al sur km 5.5  | La Paz
favorettofabio@gmail.com
Using pan sharpened images in this study
Pan sharpening by Fabio Favoretto, using GRASS Brovey method

work done october 2016


home
 
 
go to 15 mresolution

30 m resolution
Data

TCC TOA 
logarithmic enhancement

TCC BOA deglinted
logarithmic enhancement

Yann's ROI

Glint regressions by SWIR1 band



Depth retrieval
NO Smoothing    PAN solution

4SM retrieved depth
see legend

Seatruth: DTM resampled to 30 m GSD
see legend

4SM retrieved depth
Full ROI, 30 m GSD

ZDTM-Z4SM 30 m GSD
see legend

 

Seatruth regression, 30 m GSD





Modeling results
NO Smoothing    PAN solution

image B: average bottom brightness (0-200)

see legend for image B

SAM image: spectral angle mapping

see SAM legend
   



Profiles
Smart_Smoothed    PAN solution

Profile_Black

Profile_Black location
from W to E, sections run from North to South
  • section A:
    • depths underestimated from A1 to A2, I don't know why
    • blueish from 6.5 km to 7.0 km
  • section B:
    • B1, B2 and B3 are topographic highs
    • greenish all the way
  • section C:
    • blueish from 3.0 km to 3.5 km
    • coastal extremely low around C1 to C2: means coastal waters contaminated by "yellow substances"
  • section D: 
    • blueish from 2.0 km to 4.4 km
    • coastal extremely low from D2 to D4: means coastal waters contaminated by "yellow substances"
  Fabio please:
make notes about your own estimate of waters becoming clearer or less clear as you wander around






GoogleDrive

slcOLI_20160129_30mresults.zip 14 MB
updated below
slcOLI_20160129_30mresults_check.zip
Channel.Descriptor.file="slcOLI_20160129_30mresults.pix";
slcOLI_20160129_30mresults.001..#U8..SAM.....................spectral.angle.mapper
slcOLI_20160129_30mresults.002..#U8..B...........................average.brightness
slcOLI_20160129_30mresults.003..#U8..Z250......................retrieved.depth.in.decimeters
slcOLI_20160129_30mresults.004..#U8..WCC_Coastal........water.column.corrected.Coastal.band
slcOLI_20160129_30mresults.005..#U8..WCC_Blue............water.column.corrected.Blue....band
slcOLI_20160129_30mresults.006..#U8..WCC_Green..........water.column.corrected.Green...band
slcOLI_20160129_30mresults.007..#U8..WCC_PAN............water.column.corrected.Pan.....band
slcOLI_20160129_30mresults.008..#U8..WCC_Red.............water.column.corrected.Red.....band
slcOLI_20160129_30mresults.009..#S16.Zcm.......................retrieved.depth.in.centimeters
slcOLI_20160129_30mresults.010..#S16.DTM.....................your.DTM.resampled.30m.GSD
slcOLI_20160129_30mresults.011..#S16.dZ..........................Z4SM-ZDTM.in.centimeters
slcOLI_20160129_30mresults.pix
 











 



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