North American Database of Archaeological Geophysics

Image Library (by location): Washington (WA)

Sorted alphabetically by site name

Conductivity GPR Induced Polarization Magnetic Magnetic susceptibility Metal detector Multiple Methods Seismic Refraction Self Potential Resistance/Resistivity

(to view an enlargement of a graphic, click on it)

Fort Vancouver, Washington (1)

Image showing approximate location of survey grids and former structures;		Electrical resistance image after processing with despiking and a high-pass filter;		Orthographic projection of electrical resistance image;
Electrical resistance image after a large-radius, high-pass filter and interpretations of selected anomalies;		Possible location of a former structure, discovered through further image processing;		Interpretation of anomaly that may be a former structure;

Fort Vancouver, Washington (2)

Resistivity plot and model for data from resistivity line 1;	Resistivity plot and model for data from resistivity line 2;
Three-layer electrical stratification of resistivity line 1;	Three-layer electrical stratification of resistivity line 2;
Magnetic image showing possible locations of houses and linear anomalies;	Magnetic image showing possible locations of 2 houses and other anomalies;
Cultural interpretation of gradient magnetic data in Grid Units 1 and 2;	Cultural interpretation of gradient magnetic data in Grid Units 3 and 4;

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