Going below to protect the above

Standing since medieval times, the famous Lincoln Cathedral in the United Kingdom provides some of the most remarkable architectural elements in the British Isles. Records show Saxon houses from the 12th to 17th centuries within the church’s courtyard. Along with these elements comes many buried archaeological relics dating back to the construction in 1072.

当大教堂准备进行翻新以开发新的摄影师和访客设施时，规划人员需要确保在此过程中不会损害任何历史文物。他们转向了Technics，这是一家专门研究英国遍布建筑和公用事业测量的地理空间咨询公司。

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Technics carried out a Ground Penetrating Radar (GPR) survey at the historic cathedral to provide detailed subsurface data to detect both archaeological and utility features.

GPR数据已用于支持开发计划，最重要的是，最大程度地减少了对任何被埋葬的考古证据的损害的风险，并策划了已知和未知公用事业的地位。

Technics used a suite of GPR systems byIDS GeoRadar. This included the RIS MF Hi-Mod, a specialised GPR system capable of investigating large areas to produce a 3D view, and the new Stream C, the company array solution for real-time 3D mapping of underground utilities and features. Technics captured multiple 3D data sets in high resolution for post-processing the detectable utilities and archaeological features.

“We were very excited to employ the suite of IDS GeoRadar equipment we have on site including the new Stream C. Processing the results in GRED HD enabled our team to view the data sets in three different views – tomography, cross sections and in 3D," said John Macintyre, Technics managing director. "The result was highly effective in highlighting a mass of deeply buried Roman walls and clear evidence of the medieval Deanery in the area of the proposed visitor facilities."

保护历史

Having carried out the detailed survey, Technics was able to compare the GPR data and evidence from boreholes, which included traces of Roman tiles, ceramics, plaster and tesserae. Analysis of the GPR data revealed the positions of a series of probable structures, including parts of Roman, post-Roman and medieval buildings.

These results will now enable the planned works with prior knowledge to minimise damage to the historical elements. Cathedral officials can now also instigate appropriate recording programmes for archaeological features that cannot be avoided during development.

“大教堂北部的GPR调查揭示了我们所期望的中世纪建筑物的痕迹，但更加重要和有趣，它显示了在新商店，博物馆和博物馆和博物馆和博物馆的区域下面堆满了深深的罗马墙壁。餐厅被设计为建造。”林肯大教堂考古学家顾问Dominic Powlesland教授说。“在早期发现这一点对于允许在计划区域内修改计划至关重要，否则，一旦该项目开始进行，否则这将是非常昂贵的。”