Toque-Toque Landslide

Published: Oct 17, 2019 by SPAMLab

The other day (October 16/2019) we had a nice field trip to the northern coast of São Paulo State. We wanted to check a landslide spotted on GoogleEarth, see if there was access to it, if it was a good place for a drone survey, etc.

| | |:–:| | The Toque-Toque Grande Landslide, image from GoogleEarth, click here to open in Google Maps |


The landslide is located in the southern portion of the São Sebastião City, close to the Toque-Toque Grande Beach. We asked permission to the land owners and accessed the landslide by a trail that goes trhough a nice open ‘forest’ of mango trees and then on open field. The view of the coast are awesome!

Mango trees forest (click to enlarge, photo by C.H.Grohmann)


Going up… (click to enlarge, photo by C.H.Grohmann)


View from the hillside to the Toque-Toque Grande Beach (click to enlarge, photo by C.H.Grohmann)


View from the hillside to the Toque-Toque Grande Beach (click to enlarge, photo by C.H.Grohmann)


The landslide is about 300x100 meters and from the historical images of GoogleEarth we can see that it was just a linear erosion back in 2002, with constant changes until today. It will make a great subject for a future study (anyone looking for a Master’s Thesis project?).

We only had time for a quick survey with the drone, but hope to go back soon for a longer stay.

Preliminary 3D model of the landslide (click to enlarge)


   

field trip landslide sfm beach

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