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Students analyze a time-series of aerial photographs of beaches to describe changes in beach width and depositional features over several decades. This activity can be done with oblique aerial photographs to give a qualitative description of beach width changes, the location of dunes fronts, change in river position, changes in development density, and change in vegetation cover. Vertical aerial photographs can also be used and students can actually measure beach and dune widths over the time-series to quantify changes. If both oblique and vertical photographs are available, they can compare the two perspectives and perform both descriptive and quantitative assessments. Designed for a geomorphology course Designed for an introductory geology course Uses online and/or real-time data
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