In geology there are several types of ripples: centimeter-scale ripples or ripple marks, megaripples, which are higher than 5 cm and several meters wide, and sand dunes, which are …

A bedform is a geological feature that develops at the interface of fluid and a moveable bed, the result of bed material being moved by fluid flow. Examples include ripples and dunes on the …

Jul 10, 2004 · We find that the linearly most amplified mode shifts from a dune mode (grain roughness) towards a megaripple mode (large bed roughness). Then, we discuss how …

Here a self‐organization model (similar to models for subaerial bed forms) is used to simulate the formation and development of megaripples in the surf zone.

Megaripples are dynamic continental shelf sedimen- tary structures with heights up to 2 m, wavelengths up to 20 m and crests perpendicular to the current (Table 1). They occur as …

For instance, very large bedforms in the ocean that have length larger than O(10) m are often classified as sand waves, whilst megaripples have lengths ranging from O(1-10) m and ripples …

Small-scale simulations provide much-improved relations for bedload sediment transport for use in intermediate-scale models for bathymetric evolution, for example, offshore and onshore bar …

In this research we present the extension and comparison of two well-known, automated signal-processing methods for the 1-D and 2-D separation of bathymetric data derived from …

We find that the linearly most amplified mode shifts from a dune mode (grain roughness) towards a megaripple mode (large bed roughness). Then, we discuss how megaripples could be …

bed forms are covered by smaller 3-D megaripples, which are related to sets of low-angle converging laminae in box cores, interpreted as hummocky cross stratification (HCS). The …