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#permeability

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💧🌏 Greg Cocks

Linking Inca Terraces With Landslide Occurrence In The Ticsani Valley, Peru
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doi.org/10.3390/geosciences141 <-- shared paper
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[takes me back to my engineering geology days in the Southern Hemisphere, including my thesis – with a healthy dose of spatial analysis and modeling – and all with a specific use; what is not to like?]

photo - terraces in part of the Ticsani Valley, Peru
photos - (A) The main fluvial landforms in the AOI. The Carumas river can be seen here to be bounded by landslides affecting a fluvial terrace covered by agricultural terraces. (B) Landslides affecting a slope close to a community in the AOI. Note the construction of terraces on prior landslide deposits.
schematic / cross-section - Typical profile of terraces built in Southern Peru. Wall rocks are directly piled over an excavated trench in bedrock without mortar. An upward decreasing gradation is used to fill the internal portion of the wall in compacted layers. Fertile arable soil is placed in the top 30 cm.
imagery / map / schematic cross-section - (A) A 3D view of the San Cristobal landslide. (B) A 1:50,000 geological map of the landslide area, modified from [33]. Ki-mat = Matalaque Fm. P-Pi = Puno Fm. Q-pl = colluvial deposits, debris avalanche. Qp-vl-pi = pyroclastic deposits. Red line marks the topographic cross-section shown in A. (C) Cross-section of the San Cristobal landslide with estimated base groundwater conditions (blue) and materials boundaries (green) to be used for modeling and interpreted potential failure surfaces (dashed red).
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Dublin Inquirer

A new walking and cycling link in Knocklyon has hit a big grey wall. It separates Two Oaks, a just-built 590-home apartment complex, from the council’s grassy Dargle Park, and older area housing estates. #Dublin #Ireland #cycling #walking #activetravel #permeability
dublininquirer.com/2023/08/09/

Photo: Valerie Humphreys points down a paved walking and cycling path to where it ends, right at a big grey wall.

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