Thursday, September 19, 2013

Remote Sensing Mayan Pyramids: Week 1


For our first few assignments in Special Topics in Archaeology, we are doing something pretty cool - we'll be analyzing Landsat imagery to explore for Mayan pyramids in the Guatemalan jungle.  We began experimenting with and combining various bands from the 8 bands available from Landsat.  The different combinations each have different advantages.  The image above shows three of the possibilities. Landsat Band 8 provides the highest resolution of the Landsat bands (15m panchromatic). Natural Color combines the visual spectrum bands (Landsat Bands 1 - 3) and includes pansharpening (using Band 8).  False Color combines the green and blue spectrum (Bands 2 and 3) with the Near Infrared (Band 4) to highlight biomass.

We still don't have a great view of the pyramid at Mirador, but we will continue to home in on it in the following weeks.

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