4SM ETM salar coipasa

A 1401*1006 EO1-ALI 6 bands 16-bits image of Salar de Coipasa

Band	1	2	3	4	5	6
Colour	blue	blue	green	red	nir	nir
WL in nanometers	443.0	482.5	577.0	660.0	790.0	867.5

Raw image, true color composite	Raw image, false color composite
Bottom reflectance, true color composite	<== Bottom reflectance <== The scene is seen "as if there was no water" The bottom of the salar is said to be lined with a layer of pink algae (Wikipedia) on which flamingoes feed. We see here that this appears to be limited to the north-east part of the moat. The transition from bright bottoms to darker bottoms is absolutely not related to depth. The darkening of the bottoms is likely to be related to river discharge, bringing nutrients and sediments and subsequent development of a pink algal mat, high in red, low in blue rather than any kind of depth or water stratification effect
Computed depth	Average bottom brightness
image WZ Green: almost all shallow pixels are modeled based on the NIR band at 867 nm Purple: only a few darkest/deepest (?) spots are modeled based on the NIR band at 790 nm	Black line This line runs along the fairly sharp transition from uniform and very bright bottoms towards darker bottoms closer to the river mouth without any correlation with computed depth!!
Calibration_diagram_6_5_4_2 full image Calibration_diagram_6_5_4_1 full image Calibration_diagram_5_4_3_1 full image Calibration_diagram_4_3_2_1 full image Optical water type ~C1+0.26 in a low water situation Wavelengths used are 482.5, 660.0, 790.0, 867.5 nm Calibration appears to be quite reliable, in spite of the fact that the water is probably a saturated brine Depths do not seem to exceed ~0.7 m over the brightest bottoms ~1.3 m over the darkest bottoms in the moat Linearity: please note that the linearized data for all bands fully confirm that the simplified radiatice transfer model is really linear over the whole NIR depth range, as already seen in the Tarawa atoll SPOT image at all depths the Greenland EO-ALI image at all depths the Porquerolles CASI image at all depths	Calibration diagram for the Blue/Red pair Wikipedia for Salar de Uyuni: the interpretation of this weird plot relies on the knowledge that the bottoms are lined with a pink algal mat the water depth in the moat hardly exceeds 1 m

#Salar de Coipasa Salar de Coipasa Salar de Coipasa Salar de Coipasa Salar de Coipasa 3,656 meters above the mean sea level
#/home3/ymorel/4SM/compile.sh;
#rm *gli *cal
#rm 4sm.def
#nice -20 4SM.3.21 -Process/14_JAN_2010 -Origin/USGS
-DB//0037_0_6_0/6_38/1401_1006/557.355_7885.995/1_1
-Mis/Andes/Salar_de_Coipasa/EO1/ALI/USGS/UTM_19_008/0.030_0.030/26_JAN_2003
-MakePIX /FILE/8/Z20
-import/data*/dbnc_0_1_0_0/R1751_L3221/import_555.900_7941.900
-M@0000001/@0002/00003/00004/00005/00006
-LS0009999/09999/09999/09999/09999/09999
@SCL/00722/00830/01232/01727/02159/02018
-SCL/00706/00832/01235/01714/02294/02280_new
-Lsw/042.7/033.7/023.9/019.6/013.2/009.8_new
-La/0039.6/030.7/020.9/017.6/013.2/009.8_new
-LsM/200.0/200.0/200.0/200.0/200.0/200.0_new
-Lm/0001.0/001.0/001.0/001.0/000.2/000.9_new
@deglint/vRba/DegTol1.00/F2/L6/GlintM95.0/FN/mDEGLINT1
-AutoCAL/Print_3_4/mapBPL/MakeNewMask/getGlint/glintM50.0/clouds
-smooth/5/D/Smart+ @-DN878/977/5BrightBeach @-DN1216/264/5Lsw

#exit

#Following is the full CommandLine=====mBPL=2==================================
#/home3/ymorel/4SM/compile.sh
nice -20 4SM.3.21 -Process/08_JAN_2010 -Origin/USGS
-DB//0037_0_6_0/6_38/1401_1006/557.355_7885.995/1_1
-Mis/Andes/Salar_de_Coipasa/EO1/ALI/USGS/UTM_19_008/0.030_0.030/26_JAN_2003
@-URL/file:///home/ymorel/RSPwebsite/website/
-makePIX/FILE/0/Z20
-WLM/453.0/515.0/605.0/690.0/805.0/890.0
-WLm/433.0/450.0/525.0/630.0/775.0/845.0
-cWL/0.500/0.500/0.500/0.500/0.100/0.500
-cWL/0.500/0.500/0.650/0.500/0.500/0.500
-M/@000001/@0002/@0003/00004/00005/00006
-LS0009999/09999/09999/09999/09999/09999
@CP/182.1/190.5/190.2/142.3/50.1/23.2_0.50m
@CP/190.1/190.5/182.2/143.8/49.1/22.7_0.50m
-dLsw00000/000.0/00000/000.0/0-1.0/0-0.5
-SCL/00706/00832/01235/01714/02294/02280_new
-Lsw/042.7/033.7/023.9/019.6/013.2/009.8_new
-La/0039.6/030.7/020.9/017.6/013.2/009.8_new
-LsM/200.0/200.0/200.0/200.0/200.0/200.0_new
-LsM/216.0/216.9/217.9/218.2/218.7/219.0_CoefLM=1.10
-LsM/221.0/216.9/212.9/220.2/218.7/219.0_CoefLM=1.10
-Lm/0001.0/001.0/001.0/001.0/000.2/000.9_new
-KK2_4_0.3235/Knir5.500/Bm400_BG500_GR600_RN700
-Z/MSL0.00/zplus/cSL1.18/ZMax0.00/cdZ1.00/PAN_1_6/sIG_4w0/n_0/cZ1.000
-B/tclNe2.00/LBref200_100/Bmin0/cLM1.03
-B/tclNe2.00/LBref200_100/Bmin0/cLM1.22
@deglint/vRba/DegTol1.00/F2/L6/GlintM10/FN/mDEGLINT1
-extract/v/NIRband6/NIRmax1000/mBPL2/mSOIL21 /Ext_1_1401_1_1006
@Calibrate/v/BdSNpz/BC_6_5_3_2/BDh_12_13_24
-calibrate/v/BdSNpz/BC_6_5_4_2/BDh_12_23_34
-Model/mask_4    @-Tc2/3
-smooth/1/D/Smart+
@-E80/210/300/570
-dCAL/A/2_4/18    @-E1/1401/1/1006 @-E1/1401/1/1006
-ProfileABZ/profile/profile_1/1_2_3_4_5_6
@-DD1132/337

exit

#Following is the full CommandLine=====mBPL=2==================================
/home3/ymorel/4SM/compile.sh
nice -20 4SM.3.21 -Process/08_JAN_2010 -Origin/USGS
-DB//0037_0_6_0/6_38/1401_1006/557.355_7885.995/1_1
-Mis/Andes/Salar_de_Coipasa/EO1/ALI/USGS/UTM_19_008/0.030_0.030/26_JAN_2003
@-URL/file:///home/ymorel/RSPwebsite/website/
-makePIX/FILE/0/Z20
-WLM/453.0/515.0/605.0/690.0/805.0/890.0
-WLm/433.0/450.0/525.0/630.0/775.0/845.0
-cWL/0.500/0.500/0.500/0.500/0.100/0.500
-cWL/0.500/0.500/0.650/0.500/0.500/0.500
-M/@000001/@0002/@0003/00004/00005/00006
-LS0009999/09999/09999/09999/09999/09999
@CP/182.1/190.5/190.2/142.3/50.1/23.2_0.50m
@CP/190.1/190.5/182.2/143.8/49.1/22.7_0.50m
-dLsw00000/000.0/00000/000.0/0-1.0/0-0.5
-SCL/00706/00832/01235/01714/02294/02280_new
-Lsw/042.7/033.7/023.9/019.6/013.2/009.8_new
-La/0039.6/030.7/020.9/017.6/013.2/009.8_new
-LsM/200.0/200.0/200.0/200.0/200.0/200.0_new
-LsM/216.0/216.9/217.9/218.2/218.7/219.0_CoefLM=1.10
-LsM/221.0/216.9/212.9/220.2/218.7/219.0_CoefLM=1.10
-Lm/0001.0/001.0/001.0/001.0/000.2/000.9_new
-KK2_4_0.3235/Knir5.500/Bm400_BG500_GR600_RN700
-Z/MSL0.00/zplus/cSL1.18/ZMax0.00/cdZ1.00/PAN_1_6/sIG_4w0/n_0/cZ1.000
-B/tclNe2.00/LBref200_100/Bmin0/cLM1.03
-B/tclNe2.00/LBref200_100/Bmin0/cLM1.22
@deglint/vRba/DegTol1.00/F2/L6/GlintM10/FN/mDEGLINT1
-extract/v/NIRband6/NIRmax1000/mBPL2/mSOIL21 /Ext_1_1401_1_1006
@Calibrate/v/BdSNpz/BC_6_5_3_2/BDh_12_13_24
-calibrate/v/BdSNpz/BC_6_5_4_2/BDh_12_23_34
-Model/mask_4    @-Tc2/3
-smooth/1/D/Smart+
@-E80/210/300/570
-dCAL/A/2_4/18    @-E1/1401/1/1006 @-E1/1401/1/1006
-ProfileABZ/profile/profile_1/1_2_3_4_5_6

A 597*1554 EO1-Hyperion 26 bands 16-bits image of Salar de Coipasa, Bolivia. June 5th, 2004

image EO1H0010732004157110PY, courtesy of USGS_Glovis; this image subset is 7.8 km across , pixel size 30 m

26 bands used: band spacing is 10 nm from 447.2 nm to 691.4 nm, NIR is at 844.0 nm

Raw image, false color composite	Computed depth
True color composite of spectral bottom reflectance	Average bottom brightness
Calibration diagram for Blue, Green, Red and NIR bands Optical water type ~OIII+0.3 in a low water situation Quite frustrating though, as the depth does not exceed ~1 m in june 2004	Lsw and La: quite difficult, as La and Lsw have to be bestimated using expert knowledge Very shallow bottoms: quite interesting, as the simplified radiative transfer equation is seen to apply in a straightforward manner at very shallow depths over very bright and uniform bottoms Jerlov's classification: quite rewarding, as it is seen to apply in a straightforward manner to hyperspectral data and to clear briny waters, it is seen that the 575-600 nm region of the spectrum would need to be resolved with more closely spaced attenuation sample data this is a cause of difficulties when using wideband data like Landsat ETM or EO1-ALI

#/home3/ymorel/4SM/compile.sh

#nice -20 4SM.3.22 -Process/04_FEB_2010 -OriginUSGS

-dB/EO1H0010732004157110PY/63_1_26_0/26_65/597_1554/584.565_7896.555/1_1

-Mis/Bolivia/Salar/EO1/HYPERION/USGS/UTM_19_008/0.030_0.030/05_JUN_2004

-MakePIX

@import/data*EO1H0010732004157110PY/dbnc_0_1_0_0/R961_L3201/import_584.100_7944.000_10000

-LS00500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0

-Lm/0000.7/000.7/000.7/000.7/000.7/000.7/000.7/000.7/000.7/000.7/001.3/001.3/001.3/001.3/001.3/001.3/001.3/001.3/001.3/001.3/001.3/001.3/001.3/001.3/001.3/001.3_new

-SCL/01013/01064/01111/01172/01125/01136/01151/01113/01166/01159/01161/01160/01111/01088/01064/01038/01075/01037/01000/01000/00960/00926/00975/00963/00859/00905_by4SM

-Lsw/036.1/035.0/034.0/033.4/031.8/031.0/029.4/027.9/027.2/025.9/020.4/019.4/017.6/019.6/020.9/022.3/021.4/019.1/017.7/018.3/018.4/017.4/016.5/015.4/017.0/002.2_new

-La/0018.4/017.3/016.7/015.4/014.4/013.6/012.3/011.6/013.5/015.3/015.0/016.2/016.5/018.6/020.1/021.6/020.9/018.8/017.7/018.3/018.4/017.4/016.5/015.4/017.0/002.2_LAMin

@extract/v/NIRband4/NIRmax5.0/mBPL3/mSOIL21 /Ext_3000_6800_2300_5800

-AutoCAL/print_2_3/mapBPL/MakeNewMask/getGlint/glintM20.0/clouds

-smooth/1/D/Smart+

@-DN184/1187/5Bright @-DN321/567Deep

#exit

#Following is the full CommandLine=====mBPL=2==================================

#/home3/ymorel/4SM/compile.sh

nice -20 4SM.3.22 -Process/4_FEB_2010 -OriginUSGS

-DB/EO1H0010732004157110PY/63_1_26_0/26_65/597_1554/584.565_7896.555/1_1

-Mis/Bolivia/Salar/EO1/HYPERION/USGS/UTM_19_008/0.030_0.030/5_JUN_2004

@-URL/file:///home/ymorel/RSPwebsite/website/

-makePIX/FILE/0/Z20

-LS/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0/500.0

-WLM/452.2/462.3/472.5/482.7/492.9/503.0/513.2/523.4/533.6/543.7/553.9/564.1/574.3/584.5/594.6/604.8/615.0/625.2/635.3/645.5/655.7/665.8/676.0/686.2/696.4/849.0

-WLm/442.2/452.3/462.5/472.7/482.9/493.0/503.2/513.4/523.6/533.7/543.9/554.1/564.3/574.5/584.6/594.8/605.0/615.2/625.3/635.5/645.7/655.8/666.0/676.2/686.4/839.0

-cWL/0.500/0.500/0.500/0.500/0.500/0.500/0.500/0.500/0.500/0.500/0.500/0.500/0.500/0.500/0.500/0.500/0.500/0.500/0.500/0.500/0.500/0.500/0.500/0.500/0.500/0.500

-M/@000001/@0002/@0003/@0004/@0005/@0006/@0007/@0008/@0009/@0010/@0011/@0012/@0013/@0014/@0015/@0016/@0017/@0018/@0019/@0020/@0021/@0022/@0023/@0024/@0025/00026

-CP/0183.2/190.9/196.2/203.5/206.5/211.6/214.1/207.2/202.7/200.7/197.9/195.8/197.7/194.7/195.6/181.0/158.9/151.2/147.5/140.7/145.0/134.8/12.0/117.2/119.8/010.0_0.75m

-LsM/233.5/236.5/235.1/243.5/237.2/239.2/239.8/234.8/230.8/230.2/229.0/229.2/232.8/235.3/242.3/248.8/237.5/236.3/240.1/237.8/249.3/245.1/236.7/238.3/255.9/166.8_CoefLM=0.83

-Lm/0000.7/000.7/000.7/000.7/000.7/000.7/000.7/000.7/000.7/000.7/001.3/001.3/001.3/001.3/001.3/001.3/001.3/001.3/001.3/001.3/001.3/001.3/001.3/001.3/001.3/001.3_new

-SCL/01013/01064/01111/01172/01125/01136/01151/01113/01166/01159/01161/01160/01111/01088/01064/01038/01075/01037/01000/01000/00960/00926/00975/00963/00859/00905_by4SM

-Lsw/036.1/035.0/034.0/033.4/031.8/031.0/029.4/027.9/027.2/025.9/020.4/019.4/017.6/019.6/020.9/022.3/021.4/019.1/017.7/018.3/018.4/017.4/016.5/015.4/017.0/002.2_new

-La/0018.4/017.3/016.7/015.4/014.4/013.6/012.3/011.6/013.5/015.3/015.0/016.2/016.5/018.6/020.1/021.6/020.9/018.8/017.7/018.3/018.4/017.4/016.5/015.4/017.0/002.2_LAMin

-KK4_21_0.35146/Knir4.500/Bm440_BG500_GR600_RN700

-Z/MSL0.00/zplus/cSL1.18/ZMax0.00/cdZ1.00/PAN_1_26/sIG_0w0/n_0/cZ1.000

-B/tclNe5.00/LBref200_100/Bmin0/cLM1.0

@deglint/vRba/DegTol1.00/F1/L26/GlintM25.0/FN/mDEGLINT1

-extract/v/NIRband26/NIRmax1000/mBPL2 /Ext_1_597_1_1554

@Calibrate/v/BdSMpz/BC_26_25_24_23/BDh_12_23_34

-Calibrate/v/BdSNpz/BC_26_21_11_4/BDh_12_13_34

-Model/mask_2 @-Tc4/11

-Smooth/0/d/smart-

-dCAL/A/4_21/38 @-E1/597/1/1554 @-E1/597/1/1554

@-DN184/1187/5Bright @-DN321/567Deep @-DN368/1051