which in turn perpetuates the form of the dune. Also note the presence of ripple marks on the annotated image above, which tells us that this interaction between fluid flow and morphology can ...

The asteroid impact that slew the dinosaurs may have also indirectly sculpted the largest ripple marks ever found on Earth. A series of ridgelike structures more than three stories high and spaced ...

Here we use 3D airflow modelling to demonstrate that local dune topography exerts a strong influence on wind speed and direction and that ripple movement likely reflects steered wind direction for ...