[H-CG30] Archeological Science: Earth Sciences and Archaeology

[HCG30-P07] Magnetic surveys for archaeology

*Tadahiro Hatakeyama^1,2, Yu Kitahara³, Nobutatsu Mochizuki⁴ (1.Information Processing Center, Okayama University of Science, 2.Graduate School of Biosphere-Geosphere Science, Okayama University of Science, 3.Graduate School of Social and Cultural Studies, Kyushu University, 4.Faculty of Advanced Science and Technology, Kumamoto University)

Keywords:Magnetic survey, Magnetic susceptibility survey, Physical survey, Archaeology

In archaeology, methods of physical surveys have been used to detect archaeological sites and relics buried in the soils. Survyes of electric waves (ground radar), elastic waves, electric field, magnetic filed and other variables are used in archaeological surveys as well as in geophysical surveys. However, the target depth of the archaeological surveys is much shallower than that of geophysical surveys. In the shallow region, the inhomogeneous structure tends to force the complecated interpretation of the results.
For archaeological purpose, we have been measured the magnetic properties observed on the surface, magnetic field (anomaly) and susceptibility, which are the indicatives of the magnetization indicating the exposure to the heat and contents of magnetic (iron minerals).
Here we introduce recent our works on magnetic field survey and magnetic suscepbility survey to find buried/surface fired sites, especially with the paleomagnetic and rock magnetic points of view.