Trial Survey Method of Electro Magnetic and Soil Material on Medieval Towns and Castles Centering on the Method of detecting Invisible Feachers

本报告旨在发展获取考古信息的技术，并利用地球物理方法实现这一技术。也就是说，在不挖掘或最少挖掘的情况下，发展和完善考古遗址质量调查技术，获取无形遗址的考古信息。本项目采用电磁法和地磁法进行测量。这些都与人类活动有关，如火的使用和建筑，以及自然现象，如地球磁场和火山活动。本报告概述了1999年至2001年每年7月和8月进行的实地调查结果。经过三年的田野调查，发现了港口遗址的中世纪码头。根据地面雷达测量的结果，已经挖好了壕沟。因此，我们建立并确定了中世纪港口遗址地面雷达的方法和技术。除了对中世纪遗址的调查外，我们还对Himi市的古坟和富山市进行了调查。我们的目标是搜索包围他们的护城河。我们成功地找到了他们。Tosaminato遗址的挖掘将持续十多年，目的是重建中世纪时期的城镇遗址和古代时期的城堡。我们不可能挖掘所有的区域，但是，我们首先需要做的是提前预测考古特征。在这一点上，对于这种广域场地，在规划研究议程之前，地球物理调查是非常必要的。

This report aims at developing the technique to obtain archaeological information and at realizing of it by geophysical method. In other words, without excavating or with the minimum excavation, we try to develop and improve the technique to investigate the quality of archaeological site and to obtain the archaeological information of invisible site. Our project carry out the survey by electromagnetic and geomagnetic method. These are related to the human activity such as fire use and construction and the natural phenomena such as earth magnetic field and volcano activity.This report outlines the results of fieldwork undertaken annually in July and August from 1999 to 2001. The three years of fieldwork resulted in the discovery of medieval dock of harbor site. The trench had set up according to the result by the ground radar survey. As a result, we have established and finalized the method and the technique of ground radar on medieval harbor site.Apart from the survey on medieval site, we also carried it out on Kofun in Himi city and in Toyama city. We aimed at searching moats which surrounded them. We found them out successfully. The excavation at Tosaminato site will continue for over ten years, with the aim of reconstructing the town site in its medieval phase and the castle as it was in the ancient period. We will not be able to excavate all of the area, however, what we need to do first is predict the archaeological features in advance. In that point, for this kind of wide area site, geophysical survey is remarkably essential before planning the research agenda.