My name is Jeffrey Kwang, and I like to build models. I'm a geomorphologist, and I use my models to understand how the Earth's surface evolves.
What is this image showing?
The gray-scale image to the right depicts a digital elevation model (DEM). Each pixel in the DEM represents the height of the landscape, where dark areas are low and light areas are high.
How does it work?
Here, we zoom in on 9 of the pixels of the DEM. When rain lands on a pixel, we tell the water to move in the direction of steepest descent. Think about placing a ball on a hill. Which way does the ball tend to roll?
More interactive models to come...