Geophysical Survey (and Digital Imaging) The land surveying team conduct these on sites of all sizes, using a machine which detects items below the surface. A geophysical survey is often complemented by field-walking and a metal detector survey to provide a detailed understanding of the archaeological potential of a site and to allow a targeted and cost-effective approach to any intrusive investigations that could be required.
In some situations, it may be more cost effective to undertake trial trenching instead of undertaking a geophysical survey, we can advise on the best methods for every case.
The results of a good geophysical survey can be used to inform a decision on the location, scale and necessity of any further, intrusive site investigation. Gradiometer (magnetometer) survey is frequently the most cost-effective method of non-intrusive investigation, enabling large areas to be covered quickly. We can also provide resistivity (resistance) survey and ground penetrating radar (GPR).
Digital Imaging We complete the full range of digital imaging, including survey data, LiDAR and photogrammetry and recording relating to archaeology.
Survey data gathered digitally or manually during fieldwork can be put together within a GIS (Geographical Information System). This includes the production of maps, plans, sections and distribution plots of remains discovered during site investigations.
Survey data from buildings is used to created floor plans, elevations or 3D visualisations where requested and photogrammetry can be used to create images of both archaeological remains and structures. Alongside the use of traditional photography and hand illustration to depict artefacts we use RTI (Reflectance Transformation Imaging) to analyse low relief objects. We can also offer laser scanning services where more detailed 3D visualisation is required.
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