Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/1433
AuthorsPiro, S.* 
Samir, S.* 
Versino, L.* 
TitlePosition and spatial orientation of magnetic bodies from archaeological magnetic surveys
Issue DateAug-1998
Series/Report no.41/3
URIhttp://hdl.handle.net/2122/1433
Keywordsapplied geophysics
archaeological prospection
magnetic method
cross-correlation technique
synthetic models
Subject Classification04. Solid Earth::04.05. Geomagnetism::04.05.99. General or miscellaneous 
AbstractFor the last twenty years magnetic surveys have frequently been applied in archaeological prospection. Among the different processing techniques that can be applied to the magnetic data, we studied the possibility for delineating the position and the spatial orientation of shallow depth magnetic anomalous bodies. The approach namely cross-correlation filter (or matched filter) has been adopted. At first, theoretical magnetic anomalies of total magnetic field, of its components and the vertical gradient of these, due to three-dimensional bodies, oriented S-N, E-W and NW-SE, were calculated. These synthetic bodies were considered a sum of many elementary prisms. Field measurements were simulated adding a noise component with different signal-to-noise ratio on the theoretical anomalies. In order to improve signal-to-noise ratio and to locate and delineate the orientation of the anomalous bodies a bidimensional cross-correlation technique was applied. Different synthetic anomalies, due to bodies with different dimensions, depths, susceptibility contrasts and geomagnetic parameters were used, as operators, to apply the cross-correlation technique. The efficiency of the method was improved using a normalised cross-correlation of the field data.
Appears in Collections:Annals of Geophysics

Files in This Item:
File Description SizeFormat 
08 piro.pdf4.12 MBAdobe PDFView/Open
Show full item record

Page view(s)

63
Last Week
0
Last month
checked on Jun 22, 2017

Download(s)

251
checked on Jun 22, 2017

Google ScholarTM

Check