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March 4, 20260 citationsOpen Access

Site 316 - Geophysics Survey Report Heritage Non-intrusive Surveys Reports Group 022

MBMatt Berry

Key Points

  • The aim is to conduct a non-intrusive geophysical survey to identify potential archaeological features at Site 316.
  • Used four Bartington Grad601 sensors mounted on a carrying frame for data collection.
  • Conducted readings at a frequency of 10Hz with 1m intervals between sensors.
  • Utilized Real Time Kinetic (RTK) dGPS for high positional accuracy during the survey.
  • Analyzed data for circular and linear anomalies suggestive of archaeological origins.
  • Identified a circular anomaly and parallel linear anomalies possibly related to ditches and pits.
  • Found additional linear anomalies attributed to modern ploughing patterns and service pipes.
  • Recorded low magnitude 'spike' anomalies with natural and modern causes.

Abstract

The survey was undertaken using four Bartington Grad601 sensors mounted at 1m intervals (1m traverse interval) onto a rigid carrying frame. The system was programmed to take readings at a frequency of 10Hz (allowing for a 10-15cm sample interval) on roaming traverses (swaths) 4m apart. These readings were stored on an external weatherproof laptop and later downloaded for processing and interpretation. The system was linked to a Trimble R8s Real Time Kinetic (RTK) differential Global Positioning System (dGPS) outputting in NMEA mode to ensure a high positional accuracy for each data point, in accordance with EAC guidelines (EAC 2016). The survey has identified a circular anomaly, parallel linear and discrete anomalies in close proximity to each other at the eastern boundary of the survey area which are of possible archaeological origin. The anomalies are suggestive of ditch and pit like features. Generally, the Site sits in an area of low archaeological potential outside of a RAZ and with only one Historic Environment Record (HER) reference attesting to archaeological activity in the vicinity of the site. Elsewhere, other linear anomalies identify modern ploughing patterns, a service pipe and former field boundaries evident on historic mapping. Occasional, discrete, low magnitude and dipolar 'spike' anomalies are of natural and modern causes respectively.

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Cite This Study

Matt Berry (2022) studied this question.

synapsesocial.com/papers/69a7cd8cd48f933b5eeda02bhttps://doi.org/10.5284/1139631
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