https://doi.org/10.3390/hydrology9060106

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Publication Title

Open-Source Code for Radium-Derived Ocean-Groundwater Modeling: Project Open RaDOM

Document Type

Article

Publication Date

6-14-2022

Abstract

Radium has been commonly used as a tracer of submarine groundwater discharge to the ocean and embankments, as radium activities are commonly input into box models to calculate a groundwater flux. Similarly, isotopes of radium (Ra224, Ra223, Ra226, Ra228) have been used to calculate water mass ages, which have been used as a proxy for residence times. Less commonly, radium and other tracers have been utilized in mixing models to determine the relative contribution of groundwater to a marine system. In the literature, all of these methods have almost exclusively been solved using analytical methods prone to large errors and other issues. Project Open RaDOM, introduced here, is a collection of open-source R scripts that numerically solve for groundwater flux, residence time, and relative contribution of groundwater to coastal systems. Solving these models numerically allows for over-constrained systems to increase their accuracy and force real solutions. The scripts are written in a way to make them user-friendly, even to scientists unfamiliar with R. This communication includes a description of the scripts in Project Open RaDOM, a discussion of examples in the literature, and case studies of the scripts using previously published data.

Publication

Hydrology

Publisher

MDPI

Volume

9

Issue

6

Pages

106

Department

College of Arts and Sciences

Comments

Received: 11 May 2022 / Revised: 4 June 2022 / Accepted: 10 June 2022 / Published: 14 June 2022

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