Tag Archives: geophysics

Reverse engineering a 1970s geophysics survey of Lake Farm Roman Fort, Wimborne, Dorset

During the 1970s and 1980s, the Ancient Monuments Laboratory undertook geophysics surveys with pioneering fluxgate magnetometer equipment. This was before there was access to personal computers, and results were plotted directly onto line trace plots. For the first time, buried … Continue reading

Posted in Technical | Tagged , , , | 1 Comment

Survey of a long barrow on Cranborne Chase

We have just completed the report on a small geophysics survey we did of a Neolithic long barrow, Gussage St Michael 10, East Dorset.  It is now a low ploughed out mound situated on the same ridge as a number … Continue reading

Posted in Field Work | Tagged , , , , | Leave a comment

Report on the survey of possible long barrow at Sopley

We have just completed the report on the survey we did at Sopley, near Bransgore, in September 2017, where we were looking for the lost site of a long mound, supposed to be a long barrow (burial mound).  The report … Continue reading

Posted in Field Work | Tagged , , | Leave a comment

Re-visualising a long barrow near Old Sarum

A few weeks ago I was walking around the ramparts of Old Sarum hillfort when I spotted the cropmarks of a long barrow, and adjacent ring ditches, in one of the fields to the north of Old Sarum.  These cropmarks … Continue reading

Posted in Technical | Tagged , , , , , | Leave a comment

Geophysics – Oval Barrow – Part 3

Following on from previous posts about the possible oval barrow near Fordingbridge (Part 1 and Part 2), I was away when two more squares were surveyed with the resistivity equipment.  I recently downloaded the data from the data logger, and … Continue reading

Posted in Field Work | Tagged , , , , , , , | 1 Comment

Geophysics – Oval Barrow – Part 2

On Saturday four of us returned to the site of the possible oval barrow, the survey of which we had started the previous week.  We quickly measured out our grid and started the survey.  After a visit from the gamekeeper … Continue reading

Posted in Field Work | Tagged , , , , , , | 1 Comment

Geophysics Update July 2012

We recently returned to our regular site near Fordingbridge to continue our geophysics work.  Last weekend involved locating our original baseline, doing two traverses across the field, and measuring in two more baselines in other parts of the field.  The … Continue reading

Posted in Field Work | Tagged , , , | Leave a comment

Preliminary Geophysics Results April 2011

Following a previous geophysics training session on 9th April, Bill and Mark returned to the site to survey three adjacent grid squares.  A preliminary set of plots for all four squares is shown below, with each plot showing a different … Continue reading

Posted in Field Work | Tagged , , | Leave a comment

Geophysics results 9th April 2011 (part 2)

I have already described the very useful geophysics training session held last Saturday, 9th April.  That post included the preliminary results from the survey work carried out in the morning, when a problem occurred half way across the grid square … Continue reading

Posted in Field Work | Tagged , , , | 1 Comment

Geophysics training session 9 April 2011

It was a glorious day for the geophysics training session at Godshill, with bright sunshine and hardly a cloud in the sky.  However, not brilliant conditions for a resistivity survey, which is suited to moist ground. It took a while … Continue reading

Posted in Field Work | Tagged , , , | 3 Comments