Category Archives: Isola Sacra Survey

GPR and ERT georeferencing and preliminary image

So, another day on the GPR and ERT data for Portus. Most of the morning spent checking the coordinates for the three local grid systems we are using for the data at Portus, and checking preliminary images of the GPR in a few locations. The aim here is to establish a new GIS for the geophyscial survey data to allow full integration of all of the datasets. Some interesting features in the results so far, working with data processed by Jessica Ogden at L-P Archaeology @jessogden and ncorporating earlier survey and excavation plans of the Soprintendenza. For more information see http://www.portusproject.org

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Another day of data processing

So today is another day of data processing for the Portus and Isola Sacra surveys. This morning covering the main stretch of magnetometry data from the central part of the Isola, processing in Geoplot, and checking through the data grid by grid as a quality control check. All okay so far, with some issues of heading error caused by the enclosure fences around some of the smaller particelli. Interesting features of the dy include more canal-type anomalies sub-dividing the landscape. Really hope that will be possible to carry out some augering across some of the archaeological and fluvial features at some stage. This would fit in well with the sample analysis of magnetic susceptibility from Jean-Philippe Goiran and Ferreol Salamon’s soil samples.

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Filed under Isola Sacra Survey