The Efficiency of Vertical Magnetic Gradient in the Discovery of Archaeological

This report displays the magnetic surveys that were conducted at Archaeological site in the northwest of the Kingdom, along the line of 38˚03”08” east longitude and latitude 26˚30”14 north which is located within the province of AlUla approximately 400 m away from the town of al Medina.

Part of this area was selected with length of 40 meters and width of 20 meters for the purpose of the study based on surface phenomena in this chosen area, The use of vertical magnetic gradient.

The Gradient Magnetic data were processed using two different processing software for all surveyed Areas; to get more enhancements of results and to keep quality control. The magnetic response is different form high to low values, that is depend on the Magnetic susceptibility of geological, host materials and the hidden targets through it; on the survey area. This response of Gradient Magnetic methods were appear as variation anomalies which are indicated to a variation in the medium, and that interpreted as archaeological features, boundaries between buried rooms, walls, the existence of archaeological findings, buried walls and may be some of that walls are damaged and discontinued.