الفهرس 
AcknowledgmentOnly 14 pages are availabe for public view
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Abstract
This nesis can devided Into two parts The first part consIStS of chapters 1.2.3 and 4 can be considered as introduction to underwater sound coverIng history of underwater sound development5and survaying th basic concepts for the sonar equatIon In case of paSIve sonar and active sonar. also the different parameter affectIng the propagatIon beSIde the theories behInd tncalculations WhICh will be done. also why the sound path In the sea has the shape shown and the vertical Jt~e horIzontal velocity profile. also the shallow water sound propagation. <Adding to this .the numerical calcule.tion for the maXImum
detection range.The second part of the thesIs consists or chapters5.6.7 and In these chapters are shown the resul t ing temperatur deptr:profile measured in the sea area under consideration and the equipment used for measurments. This followed by explanation of the effect of temperature and when it becomes the main factor affecting the velocity profile Then we followed this by how we will use this data to draw and compute the shape of ’the propagation pattern which from it we will measure the depth of the first Layer over the months, the maximum deteGtion range for the’ surface layer.