The CAIRN method: Automated, reproducible calculation of catchment-averaged denudation rates from cosmogenic radionuclide concentrations

Simon Mudd, Marie-Alice Harel, Martin Hurst, Stuart W. D. Grieve

Research output: Contribution to journalArticlepeer-review

Abstract

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 () and altitude () 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 = 8 and = 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 de-nudation 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.
Original languageEnglish
JournalEarth Surface Dynamcs
DOIs
Publication statusPublished - 10 Aug 2016

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