Satellite Remote Sensing in Archaeology: Imagery Analysis

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Aerial photos and analysis of reflectivity of various electromagnetic spectrum wavelengths provides opportunities for archaeological discovery. documentation. and analysis of spatial relationships

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Satellite Remote Sensing in Archaeology: Imagery Analysis

  1. 1. Remote Sensing in Archaeology Imagery Analysis
  2. 2. Remote SensingPerception at a distanceInterpretation of imagerySpatial analysis
  3. 3. ArchaeologySite detectionRegional spatial analysisPredictive modelingHistoric preservation in regional planning
  4. 4. Early Remotely Sensed DataFrench balloonistReconnaissance photographyUSDA and USGS aerial dataLandsat program
  5. 5. Multispectral Imagery Several to hundreds of9 data layers1 1 8 Layer 1 (8,9) 9 Stacked data file 1 1 8 Layer 2 (8,9) 9 Choose three to show 1 1 8 Layer 3 (8,9)
  6. 6. Multispectral Scanning Selected wavelengths Airborne and satellite Measurement of differences Electromagnetic radiation
  7. 7. Electromagnetic RadiationLight, heat, and microwavesDifferential reflection/emmisivity
  8. 8. Shorter WavelengthsReflectanceSolar radiationVisible,NIR, and MIR
  9. 9. Longer Wave LengthsThermal bandsEmissivityRadarGeometric and dielectric properties
  10. 10. Key Targets for WavelengthBlue Soil, plants, buildings, roads, waterGreen Traces of buildings and roads, plant type boundariesRed Buildings, roads, chlorophyll absorption bandsNear infrared Soil moisture, bodies of waterMiddle infrared Types of rock, Soil moistureThermal infrared Heat, soil moisture, plant stressMicrowave Objects buried in arid soils, cultural features
  11. 11. Visual Site DetectionTopological featuresSoil featuresVegetation features
  12. 12. Image AnalysisIntuitive Statistical
  13. 13. Intuitive AnalysisA priori, deductive reasoningLacks statistical measure of validityQuick and effective
  14. 14. Intuitive Statistical
  15. 15. Statistical AnalysisMeasurable accuracyHigher loading on office timeCan become complex
  16. 16. GIS IntegrationCreate vector layers from resultsOverlay vector shapesDrape imagery onto DEMs
  17. 17. Site Type ExamplesBuilding RemainsRoadsHabitationsCeremonial Features
  18. 18. Building Remains
  19. 19. RoadsPossible feature detected Feature verified
  20. 20. Habitations
  21. 21. Ceremonial Features
  22. 22. Suggestions for IowaStudy known sitesDevelop regional modelsIncorporate models in planning/preservation process
  23. 23. Thanks for coming
  24. 24. End transmission

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