Magnetometer survey of a Hafit monumental complex, al-Khashbah, Sultanate of Oman (poster)

Abstract

Magnetometer surveys carried out as part of the al-Khashbah Archaeological Project have revealed the plan of two monumental buildings dating to the third millennium BC as well as the surrounding landscape. Evidence from excavations confirms that this complex can be dated to the Hafit period, marking it as an important site for the development of social complexity in the interior of northern Oman. The results of two seasons of magnetometer surveys, conducted in 2015 and 2017, are instructive in two major ways. The fused magnetograms are a record of the prehistoric cultural landscape immediately surrounding Building I and Building XI. The two surveys provide a direct comparison of two different geophysical methods of magnetometer survey: fluxgate gradiometry (2015 survey) and total field magnetometry (2017 survey), which can aid analysis of survey results. The surveys took place near the geomagnetic equator where the shallow inclination of the Earth's magnetic field can make archaeological interpretation of magnetic anomalies rather complex.