glerosion

Module glerosion

This IGM module implements change in basal topography (due to glacial erosion). The bedrock is updated (with a frequency provided by parameter processes.glerosion.update_freq years) assuming a power erosion law, i.e. the erosion rate is proportional (parameter processes.glerosion.cst) to a power (parameter processes.glerosion.exp) of the sliding velocity magnitude. By default, we use the parameters from (Herman et al., 2015)¹.

Contributors: G. Jouvet.

Parameters

Default configuration file (glerosion.yaml):

glerosion:
  cst: 2.7e-7
  exp: 2.0
  update_freq: 1.0

Description of the parameters:

Name	Description	Default value	Units
cst	Erosion multiplicative factor, here taken from (Herman et al., 2015).	2.7e-07	—
exp	Erosion exponent factor, here taken from (Herman et al., 2015).	2.0	—
update_freq	Update the erosion only each X years.	1.0	y

(Herman et al., 2015)[^Herman2015] (Herman et al., 2015)[^Herman2015]

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1. Herman, F., Beyssac, O., Brughelli, M., Lane, S. N., Leprince, S., Adatte, T., Lin, J. Y. Y., Avouac, J.-P., & Cox, S. C. (2015). Erosion by an alpine glacier. Science, 350(6257), 193--195. https://doi.org/10.1126/science.aab2386 ↩