Archive for the ‘archaeology’ Category

Micro-topographical survey

Monday, March 31st, 2008

This January’s expedition to Koroneia hill has been quite succesful. Working with the high-precision DGPS set turned out to be fairly easy. It also was very fast to work with. In our 11 days of fieldwork we’ve taken almost 9000 point measurements. Creating a digital elevation model (DEM) of a hill like this in less than 2 weeks is, as far as I know, revolutionary. Because we were specifically looking for anomalies in the hill’s topography, and because the hill has both fairly even areas and highly irregular ones, we’ve decided to select the points to measure in the field, based on what we saw, rather than trying to follow any kind of regular grid. This to avoid our grid smoothing out small ridges that may be quite important to our research. Below you can see an overview of the measurements we took, overlaid on the aerial photographs we have and a preliminary 3D result.

Koroneia hill: surface map using Kriging (2.5m grid)Koroneia hill: DGPS measurements on aerial photo

Return to Koroneia

Wednesday, December 12th, 2007

This january, my girlfriend Janneke and I will revisit the site of Koroneia to do a thorough topographical study of the hill it lies on. In order to do so, we’ll get to play with the faculties newest, 5-digit pricetag, powertoy: a TopCon differential GPS set. With it, we hope to be able to create a highly precise 3D elevation model. Assuming at least some of the slopes and terraces we see on the hill today were also there in ancient times, these must’ve shaped, and also been shaped by, the city on top of it. As such we hope to be able to learn more about the city’s layout, which started with a number of insights during the survey last summer.