糖心原创

Project description

Seen from above, many peat bogs are covered in patterns: pools and ridges a few metres apart, lined up in stripes on slopes and forming mazes on flat ground. The usual explanation borrows Turing's idea from mathematical biology. Plants and nutrients spread and react, and a uniform state becomes unstable. That reproduces the shapes, but says nothing about why the spacing is a few metres rather than a few centimetres or a kilometre. This project asks whether the peat itself sets the scale. A bog is a thin, soft layer, springy at the surface and paste-like underneath, slowly sliding under its own weight while plants push and pull on it. Thin layers of soft material are known to wrinkle, ripple and break up into patterns, with a spacing fixed by their mechanical properties. You will build thin-film models of this layer, use linear stability analysis to predict which patterns appear and how far apart, and run simulations to follow them as they grow. It is pattern formation with a real landscape to test it against.