North American Database of Archaeological Geophysics

Image Library (by location): California (CA)

Sorted alphabetically by site name

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

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CA-ORA-116

Results of the magnetic survey showing data within the expected range of prehistoric features at site CA-ORA-116;		Locations of high amplitude magnetic anomalies which are caused by historic iron debris;		Highpass filtered results from the resistivity survey at site CA-ORA-116;
Excavation units and identified house features overlaid on the resistance data;

Petaluma Adobe State Historic Park (CA-Son-2294/H)

Results of the alkali-vapor gradiometer survey at Petaluma Adobe State Historic Park;		Comparison of alkali-vapor gradiometer images by resolution;		Comparison of proton precession gradiometer image to proton precession magnetometer images created with different sensor heights;
Comparison of alkali-vapor magnetometer images by sensor height;		Comparison of diurnally-corrected alkali-vapor magnetometer images;		Results of the electromagnetic conductivity survey at Petaluma Adobe State Historic Park;

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