Manila Dune-Forest Boundary


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Dune-Forest boundary migration

I used historic imagery to create these videos of manila. I highlight the spatio-temporal change in the position of the forest/dune boundary and the beach/fore dune boundary.
Coming Soon: My Interpretations


Manila Community Center

  • Click on the image to watch the animation. If your web browser cannot open these files, right click on the map and save the mp4 file to your computer.
  • Map in the region west of northern Manila from 1948-2012, North is to the right (~12 MB mp4 file)

North Manila

  • Map in the region west of the Manila Community Center from 1948-2012 (~40 MB mp4 file)

Topographic map versions:

These maps have 2002 LiDAR topography plotted with repeated color cycles, underlain by a shaded relief topographic image. The 1:24,000 7.5′ USGS topographic quadrangle 40 foot contour is plotted in brown.
1:6,000 Series:

1:3,000 Series:

Data Sources:

  • Parcel boundaries are from the Humboldt County Planning website
  • 1948 – 1988 imagery is from the Humboldt Bay and Eel River Atlas
  • 1993 – 2012 imagery is from the USDA National Agriculture Imagery Program
  • The berm line is the general position of the back edge of the beach, which is at the base of the fore dune berm. These positions are from 1948 and 2012.
  • The magenta lines represent the general position of the westernmost boundary of the dune forest. These positions are from 1948 and 2012. The westernmost magenta line is the easternmost boundary of the foredune in 1948.

Here are the maps I used to make these videos:

1:6,000 Series

1:3,000 Series:

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