Modeling of Archaeomagnetic Anomaly Maps

The magnetic method is the geophysical method of exploration using magnetic field measurement. The concepts given here will include brief explanations of some of the essential terms in the magnetic prospection method.

Amasya is located between longitudes 34°57′06″–36°31′53″E and latitudes 40°16′16″–41°04′54″N on the Central Black Sea area of the Black Sea Region. Oluz Mound is situated in the fertile Plain of Geldingen, stretching to the south of Çekerek River (Zuliya, ancient Skylaks), which is one of the essential branches of Yeşilırmak (ancient Iris) and was discovered during the surveys of Amasya Province between 1997 and 1999.

We consider determining the inclination and declination angles from the total magnetic anomaly maps on archaeological sites. It is necessary to know the magnetic inclination and declination angles of the study area for the purpose of accurately locating the buried structures on the total magnetic anomaly maps. To this end, we use the Dannemiller and Li method.We calculate inclination and declination angleDeclination angles for both synthetic model and archaeological total magnetic field data.

This chapter, which is the first part of a quantitative analysis of total magnetic anomaly maps on archaeological sites, aims to analyze the horizontal boundaries of potential buried structures that cause anomalies from the total magnetic anomaly maps of an archaeological excavation area. In the first step, the model was created in accordance with the archaeological structure. Noisy and noiseless anomaly maps of this model were calculated. These maps were enhanced using the reduction to pole and upward continuation methods. Tilt angle and automatic gain control (AGC) methods were used. The responses of these methods on the total magnetic anomaly maps of the model were analyzed. In the second step, applying the same procedures on the total magnetic anomaly map obtained from the magnetic measurements on the area that has not been excavated in the Amasya Oluz Mound archaeological excavation area, the horizontal boundaries of the potential structure elements of the region were analyzed.

This chapter, the second part of quantitative analysis of total magnetic anomaly maps on archaeological sites, aims to analyze the depth values of potential effective sources from the total magnetic anomaly maps of an archaeological excavation area. In the first step, depth values of the structures whose boundaries were determined on the improved total magnetic anomaly map of the 5-block model were analyzed. In the second step, the depth values at these boundaries were calculated. Finally, the depth values were visualized on the simplified structure map of the region by combining and simplifying the potential structure boundary locations.