First Advisor

John Bershaw

Date of Award

6-16-2021

Document Type

Thesis

Degree Name

Bachelor of Science (B.S.) in Geology and University Honors

Department

Geology

Language

English

Subjects

Stable isotopes, Snow -- Oregon – Mount Hood

DOI

10.15760/honors.1080

Abstract

Over the 2020-2021 Winter, event-based and end-of-season snow samples were collected on Mt. Hood near Government Camp, OR and analyzed for their stable isotopic compositions of 18O and 2H. It was found that surficial snow collected through the winter had higher variation in isotopic values than samples from a snow pit collected in spring. This suggests homogenization occurred in the snowpack over the season from snow metamorphism, sublimation, and/or melting. Homogenization of the snowpack will likely become more pronounced as temperatures increase and rain falls more often than snow due to climate change. Research that utilizes the snowpack as a proxy for precipitation may become less reliable due to this modification from isotopic redistribution.

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Persistent Identifier

https://archives.pdx.edu/ds/psu/35706

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