pydune.physics.dune.courrechdupont2014#

Dune growth mechanism theory developped by Courrech du Pont et al. 2014.

References

[1] Courrech du Pont, S., Narteau, C., & Gao, X. (2014). Two modes for dune orientation. Geology, 42(9), 743-746.

Functions

MGBNT_orientation

Calculate the dune orientation growing from the 'maximum gross bedform normal-transport' rule following the model of Courrech du Pont et al. 2014, also called in the later 'bed instability'.

cosd

Cosine element-wise np.cos with an input in degree.

elongation_direction

Calculate the elongation direction following the model of Courrech du Pont et al. 2014.

flux_at_crest

Compute the sand flux at the dune crest:

growth_rate

Calculate the dune growth rate using the model of Courrech du Pont et al. 2014.

resultant_flux_aligned_crest_at_crest

Compute the component of the resultant flux (i.e vectorial average) at the crest aligned with the dune crest.

resultant_flux_at_crest

Compute the resultant flux (i.e vectorial average) of the sand flux at the dune crest.

resultant_flux_perp_crest_at_crest

Compute the component of the resultant flux (i.e vectorial average) at the crest perpendicular to the dune crest.

sind

Trigonometric sine using np.sin, element-wise with an input in degree.

vector_average

Calculate the average vector from series of angles and norms.