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Analysis of Multi Temporal Satellite Imagery for Total Suspended Sediments in a Wave-Active Coastal Area-Gaza Strip Coastal Water, Palestine
Authors: Midyan D.I. Aldabash, Füsun Balık Şanlı
Number of views: 385
Sediment load materials is one of the key factors that determine the surface water quality, both of oceanic and
river water, and it specifies water optical properties. Thus it provides a background for a plenty of applications
and projects in the water and oceanography community. Landsat detects and classifies reflected solar energy
from bodies on the earth's surface. Suspended sediments existing in water column have an optical influences. So
that, Landsat images could detect suspended sediments concentration in such a water surface. In this study we
have three main objectives to be achieved as; TSS Concentration maps generation in the Gaza Strip coastal zone,
achieving analysis processes on TSS trend itself and TSS related coastal phenomenon, and investigation of the
ability of Landsat images to detect TSS comprehensively in a wavy coastal zone. For this purpose two landsat
TM5 images acquired in 1999 and 2010, one Landsat TM7 images acquired in 2003, and 2 Landsat Oli 8 images
acquired in 2014 and 2015 were used for TSS mapping. In addition, 64 TSS in-situ tested samples were also to
calculate a correlation equation between Digital Numbers - DN in each image pixels and TSS values in the
ground data. All image analysis and remote sensing steps have been done in this study using Integrated Land and
Water Information System - ILWIS software version ILWIS academic 3.3. Green and Red bands in all used
Landsat images contained the highest linear correlation factors -R- for the images acquired in 1999, 2003, 2010,
2014, and 2015. Resulted correlation factors were higher by reducing time difference between acquisition time
and sampling time. Generated maps showed that circulation in Gaza coastal area are counterclockwise, and it
brings the sediments from Nile River Delta toward Gaza Strip.