Geophysical Investigations at the Ellsworth Rock Garden Site (21SL1006), Voyageurs National Park

The geophysical survey at Voyageurs National Park (VOYA) was conducted as part of the archeological investigations of the Ellsworth Rock Gardens Site (21SL1006). The site was located on the south side of the Kabetogama Peninsula overlooking Kabetogama Lake (Figure 1). The geophysical survey included a magnetic survey with a fluxgate gradiometer, a resistance survey with a resistance meter and twin probe array, a conductivity survey with an electromagnetic induction meter (EMI), and a ground penetrating radar survey (gpr) with a gpr cart system with 400 mHz antenna. The geophysical investigations were part of a larger park wide archeological site condition assessment project conducted by the Midwest Archeological Center (MWAC) in the summer of 2006. The geophysical survey was also conducted in order to determine the feasibility of geophysical techniques at archeological sites within VOYA. The geophysical survey was conducted by MWAC supervisory archeologist Jeffrey J. Richner, archeologist Steven L. DeVore, and archeological technicians John Banks, Brennan Dolan, and Kyle Klemme.沃亚德斯国家公园（Voyageurs National Park，VOYA）的地球物理勘探，是埃尔斯沃思岩石园遗址（Ellsworth Rock Gardens Site，21SL1006）考古调查工作的组成部分。该遗址坐落于卡贝托加马半岛南侧，俯瞰卡贝托加马湖（图1）。本次地球物理勘探涵盖四类方法：采用磁通门梯度仪（fluxgate gradiometer）的磁法勘探、搭配电阻仪与双探头阵列（twin probe array）的电阻率勘探、借助电磁感应仪（electromagnetic induction meter，EMI）的电导勘探，以及搭载400MHz天线的探地雷达（ground penetrating radar，GPR）车载系统探地雷达勘探。本次地球物理调查是2006年夏季由中西部考古中心（Midwest Archeological Center，MWAC）开展的全域公园考古遗址状况评估大型项目的一部分。开展本次勘探的另一目的，是验证地球物理技术在沃亚德斯国家公园内考古遗址中的应用可行性。本次地球物理勘探由中西部考古中心的资深考古学家杰弗里·J·里奇纳（Jeffrey J. Richner）、考古学家史蒂文·L·德沃尔（Steven L. DeVore），以及考古技术员约翰·班克斯（John Banks）、布伦南·多兰（Brennan Dolan）与凯尔·克莱姆（Kyle Klemme）共同完成。