a Ym. ARTE 
ay 
Dum? —_— 0079 
iv 
er vi pm pd 
International Archives of the Photogrammetry, 
Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B7. Istanbul 2004 
  
  
m 
    
  
  
Fig.1 Map of sampling area, northwest of Persian Gulf. 
This usually keeps the water at the estuary, 
turbid for the most of the time. This turbidity 
may extend up to few kilometers far from the 
estuary out in to the deeper region, where 
heavier particles reside to the substrate and will 
not return to the estuary even with the tidal 
currents. 
We have collected our samples at the 
vicinity of the estuary (Fig.1), while MODIS 
sensor onboard of Terra was passing over the 
region. Each sample was a minimum distance 
of 500 meters apart. Along with the sample 
collection, latitude and longitude of the sample 
were determined (using a GPS set). Also 
parameters like current speed and direction 
profile (for determination of tidal state), water 
temperature, wind speed and direction (in the 
nearest meteorological station) and visibility 
were collected. These data were used for quality 
assessment of the images. Then the collected 
samples were taken to the laboratory for 
measurement of density, particle size 
distribution and composition analysis. The 
density of the collected samples were as low as 
30 and as high as 500 mg/lit. Between 1 to 15% 
of the particles had diameters of less than | WM, 
consequently Rayliegh Scattering is not 
responsible for the reflection and scattering. On 
Table 2- Sediment constituents, with chemical name and formula 
(Courtesy, Amethyst Gallery URL http://mineral. galleries.com) 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Name Formula Presence in Nature and/or Industry Interaction with light 
Albite NaAISi3 O8 Omamental stone, Seramics and mineral Translucent to Transparent 
specimens 
Anhydrite CaSO4 In the manufacture of some cement Transparent to Translucent 
Apatite Ca5(PO4)3(OH,F,CI) sus phosphaious to beused in Transparent to Translucent 
fertilizer 
Biotite KE, Me O10 Heat insulator for industrial purposes Transparent to Translucent 
Calcite CaCO3 In cements and mortars, production of lime Transparent to Transiucent 
and some other industries 
: ; (Fe, Mg, Al)6(Si, As a mineral specimen and some industrial 2 
Chlorite Al)4010(OH)8 EN Transparent to Translucent 
G CaSO4-2(H20) some cements, fertilizer, paint filler, Transparent to Translucent 
ypsum dide ornamental stone Sp 7 
: Major source of salt and as mineral ; : 
Halite NaCl specimens Transparent to Translucent | 
xis i In the production of ceramics and some 
Kaolinite AlSi2Os(OH)4 other industry uses Translucent ba 
Muscovite KAI2(AISi3010)(F, OH)2 Heat and electrical insulator for industrial Transparent to Translucent 
purposes 
Orthoclase KAISi308 Mineral Specimens and in the porcelain Opaque to Translucent 
industry 
Quartz S102 Silica for glass, electrical components Transparent for visible 
  
1291