LANDSAT 8 OLIP
A time series of Landsat 8 OLIP images
at Lizard Island, GBR, Australia
work done in 2020 at 15 m GSD
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
peer-reviewed and published in 2017
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500*2000 HICO image of Bahrain, october 21rst 2013
scene iss.2013294.1021.093734.L1B.Bahrain.v04.14946.20131021200925.100m.hico courtesy of OSU
HICO: Hyperspectral Imager for the Coastal Ocean
: GSD 100 m
work done march 2016
see also WV2 at Bahrain
home
Nautical chart USA numerous salt domes frame the shallow bottom topography
The data
HICO bandset in nanometers for 4SM
WLMin[ 1]=401.2 WL[ 1]=406.9 WLMax[ 1]=412.7
WLMin[ 2]=412.7 WL[ 2]=418.4 WLMax[ 2]=424.1
WLMin[ 3]=424.1 WL[ 3]=429.9 WLMax[ 3]=435.6
WLMin[ 4]=435.6 WL[ 4]=441.3 WLMax[ 4]=447.0
WLMin[ 5]=447.1 WL[ 5]=452.8 WLMax[ 5]=458.5
WLMin[ 6]=458.5 WL[ 6]=464.2 WLMax[ 6]=469.9
WLMin[ 7]=470.0 WL[ 7]=475.7 WLMax[ 7]=481.4 BLUE
WLMin[ 8]=481.4 WL[ 8]=487.1 WLMax[ 8]=492.9
WLMin[ 9]=492.9 WL[ 9]=498.6 WLMax[ 9]=504.3
WLMin[10]=504.3 WL[10]=510.0 WLMax[10]=515.8
WLMin[11]=515.8 WL[11]=521.5 WLMax[11]=527.2
WLMin[12]=527.2 WL[12]=533.0 WLMax[12]=538.7
WLMin[13]=538.7 WL[13]=544.4 WLMax[13]=550.1 GREEN
WLMin[14]=550.2 WL[14]=555.9 WLMax[14]=561.6
WLMin[15]=561.6 WL[15]=567.3 WLMax[15]=573.0
WLMin[16]=573.1 WL[16]=578.8 WLMax[16]=584.5
WLMin[17]=584.5 WL[17]=590.2 WLMax[17]=596.0
WLMin[18]=596.0 WL[18]=601.7 WLMax[18]=607.4
WLMin[19]=607.4 WL[19]=613.2 WLMax[19]=618.9
WLMin[20]=618.9 WL[20]=624.6 WLMax[20]=630.3
WLMin[21]=630.4 WL[21]=636.1 WLMax[21]=641.8
WLMin[22]=641.8 WL[22]=647.5 WLMax[22]=653.2 RED
WLMin[23]=653.3 WL[23]=659.0 WLMax[23]=664.7
WLMin[24]=664.7 WL[24]=670.4 WLMax[24]=676.1
WLMin[25]=676.2 WL[25]=681.9 WLMax[25]=687.6
WLMin[26]=687.6 WL[26]=693.3 WLMax[26]=699.1
WLMin[27]=699.1 WL[27]=704.8 WLMax[27]=710.5
PAN
WLMin[28]=836.6 WL[28]=842.3 WLMax[28]=848.0 NIR
Data preparation
Binning:
HICO's original bands 1_to_52 are binned pairwise into 26 new_channels
visible bands are placed in channels 1 to 26 of the working database
and NIR band is placed into channel_28 of the working database
this is the maximum number of channels in the
4SM command line
, even using a full HD screen!
Making a PANchromatic
:
new_channels 10_to_26
are binned into a panchromatic new_channel
that's all of the Green-Red region
this new_channel is placed in channel_27 of the working database
and assigned a wavelength of 705 nm
TCC
TCC deglinted fortunately from looking at the nautical chart we may assume that optically deep waters in excess of 30 m are found at the northern end of the scene
PANchromatic location of profiles Red and Green are shown
PANchromatic deglinted
Deglinting
NIR channel raw
Deglinting along ProfileRED
Some glint regressions based on NIR
adjacency effect does not dominate the NIR signal
by contrast, sea-surface clutter is a significant source of variation of the NIR signal
Deglinting channel 26 at 693 nm along a stripe
Deglinting channel 7 at 475 nm along a stripe
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