GLG410--Computers in Earth and Space Exploration

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Assignment 14: Studying landscape change with historic aerial photography

Due: Monday, November 23 by the beginning of class

This assignment will give you an opportunity to gather and rectify historic aerial photography and then digitize lines and polygons representing landforms or other features which may have changed over time.

The main tasks are:

  1. Download at least two historic images from a location (a few hundred to a few km in extent) in Maricopa County where there has been some geomorphic or landcover change due to erosion, deposition, or urbanization. Choose time intervals which span significant changes. These images should be downloaded from the GIS web site from Maricopa County: Historic Aerial Photography. (You can do this elsewhere if there are sufficient images).

  2. Georeference the images to basemaps loaded into ArcMap or that you may have downloaded from USGS EarthExplorer

  3. Trace out lines and polygons (and possibly points if needed) delineating the major changes in the landforms (channels, flood plain, hillslopes, roads, neighborhoods, etc.) over time. Make sure that they are coded by time (and other attributes if you choose).

  4. Turn in on your web site:

GLG410 Computers in Earth and Space Exploration

Last modified: November 13, 2015