The CAIRN method: automated, reproducible calculation of catchment-averaged denudation rates from cosmogenic nuclide concentrations
We report a new program for calculating catchment-averaged denudation rates from cosmogenic nuclide concentrations. The method (Catchment-Averaged denudatIon Rates from cosmogenic Nuclides: CAIRN) bundles previously reported production scaling and topographic shielding algorithms. In addition, it ca...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2016-08-01
|
| Series: | Earth Surface Dynamics |
| Online Access: | http://www.earth-surf-dynam.net/4/655/2016/esurf-4-655-2016.pdf |
| Summary: | We report a new program for calculating catchment-averaged denudation
rates from cosmogenic nuclide concentrations. The method (Catchment-Averaged
denudatIon Rates from cosmogenic Nuclides: CAIRN) bundles previously reported
production scaling and topographic shielding algorithms. In addition, it
calculates production and shielding on a pixel-by-pixel basis. We explore the
effect of sampling frequency across both azimuth (Δ<i>θ</i>) and
altitude (Δ<i>ϕ</i>) angles for topographic shielding and show that in
high relief terrain a relatively high sampling frequency is required, with a
good balance achieved between accuracy and computational expense at
Δ<i>θ</i> = 8° and Δ<i>ϕ</i> = 5°. CAIRN includes
both internal and external uncertainty analysis, and is packaged in freely
available software in order to facilitate easily reproducible denudation rate
estimates. CAIRN calculates denudation rates but also automates catchment
averaging of shielding and production, and thus can be used to provide
reproducible input parameters for the CRONUS family of online calculators. |
|---|---|
| ISSN: | 2196-6311 2196-632X |