satellite remote sensing in archaeology: imagery analysis
DESCRIPTION
Aerial photos and analysis of reflectivity of various electromagnetic spectrum wavelengths provides opportunities for archaeological discovery. documentation. and analysis of spatial relationshipsTRANSCRIPT
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Remote Sensing in Archaeology
Imagery Analysis
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Remote Sensing
Remote Sensing
Perception at a distance
Interpretation of imagery
Spatial analysis
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ArchaeologyArchaeologySite detection
Regional spatial analysis
Predictive modeling
Historic preservation in regional planning
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Early Remotely Sensed Data
Early Remotely Sensed Data
French balloonist
Reconnaissance photography
USDA and USGS aerial data
Landsat program
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Multispectral ImageryMultispectral Imagery
Several to hundreds of data layers
Stacked data file
Choose three to show
Layer 3 (8,9)
Layer 1 (8 ,9)
Layer 2 (8,9)
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Multispectral ScanningMultispectral Scanning
Selected wavelengths
Airborne and satellite
Measurement of differences
Electromagnetic radiation
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Electromagnetic RadiationElectromagnetic Radiation
Light, heat, and microwaves
Differential reflection/emmisivity
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Shorter WavelengthsShorter WavelengthsReflectance
Solar radiationVisible, NIR,
and MIR
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Longer Wave Lengths
Longer Wave Lengths
Thermal bands
Emissivity
Radar
Geometric and dielectric properties
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Key Targets for Wavelength
Key Targets for Wavelength
Soil, plants, buildings, roads, water Blue
Traces of buildings and roads, plant type boundariesGreen
Buildings, roads, chlorophyll absorption bandsRed
Soil moisture, bodies of waterNear infrared
Types of rock, Soil moisture Middle infrared
Heat, soil moisture, plant stress Thermal infrared
Objects buried in arid soils, cultural features Microwave
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Visual Site DetectionVisual Site Detection
Topological features
Soil features
Vegetation features
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Image AnalysisImage Analysis
Intuitive Statistical
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Intuitive AnalysisIntuitive Analysis
A priori, deductive reasoning
Lacks statistical measure of validity
Quick and effective
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Intuitive Statistical
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Statistical AnalysisStatistical Analysis
Measurable accuracy
Higher loading on office time
Can become complex
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GIS Integration
GIS Integration
Create vector layers from results
Overlay vector shapes
Drape imagery onto DEMs
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Site Type ExamplesSite Type ExamplesBuilding Remains
Roads
Habitations
Ceremonial Features
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Building RemainsBuilding Remains
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Possible feature detected Feature verified
RoadsRoads
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HabitationsHabitations
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Ceremonial Features
Ceremonial Features
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Suggestions for IowaSuggestions for Iowa
Study known sites
Develop regional models
Incorporate models in planning/preservation process
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Thanks for coming
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