دراسة مورفومترية وادي خيضر في مصر باستخدام عملية التثليث المساحية : دراسة تطبيقية

الملخص EN

Geodesy is the science deal with the earth lands in many ways to represent it in the maps with special Symbols.

Geodesy methods applied mathematical and complicated geometrical methods in complicated system and multiproduct principles.

In the first section of this study we explain the basic principles of Geodesy which are the basics of triangulations in all levels.

The determination of Geodesy bases which represented by the base line which the triangulation method depend on before starting the field work.

The third principle is magnifying the base line to make its length equal with the length of main triangular network which could be equal to (100 Km).

The research shows the method of triangulation using Distance length the measuring the spherical and trigonometric adjustment will be measured and explaining the ideal situation conditions for the Geodesy network.

Then the researcher explains the calculations of coordinates and the height of the points by using airspace triangulation method.

In the second section of the study we calculate the strength of Geodesy network and number of geometrical conditions and solve the mathematical equations mentioned in the research with explanation to its symbols and stressing on the importance of the joint angles between triangular network, later we listed the algorithms and the computer program, we used simplest methods in the program to enable them to apply it topographical and mapping applications with explanation to steps which must applied in the program.

Finally the trigonometric method was applied on Akhether valley in eastern desert in Egypt which flows into the Gulf of Suez,