GPR applied to San Marcos Pueblo, NM, Archaeological Site

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GPR applied to San Marcos Pueblo, NM,
Archaeological Site

• Laura Russon

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Outline

• What is GPR?
• Dewow Filtering
• Midden 2 site
• GPR scatter and reflection
• Anomaly east of Mission Complex

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Ground Penetrating Radar
A.P. Annan, GPR notes
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Dewow Filtering
A.P. Annan, GPR notes
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Average Amplitude Time Slice 0 to 9.94 ns
Y position in meters
N
X position in meters
µV
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Average Amplitude Time Slice 9.94 to 19.87 ns
Y position in meters
N
X position in meters
µV
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Average Amplitude Time Slice 19.87 to 29.81 ns
Y position in meters
N
X position in meters
µV
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Line 1
S
N
Line 2
N
S
S
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Normalized cross-sectional area
Fresnel type reflection
A.P. Annan, GPR notes
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Midden 2
Potential Kivas
Top Slice
Second Slice
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Average Amplitude 0 to 9.94 ns
Room Block 12
Mission Complex
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Conclusions

• GPR data revealed two cylindrical anomalies
  characterized by fine grained erosional sediment.
• Minimum depth of cylindrical anomalies is 1.5 m.
• A kiva is cylindrical