slcOLI20160129

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=1, Blue=2, Green=3, PAN=4, Red=5, NIR=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