Paraglacial terrace distribution and landscape morphometry in the Fraser Basin

Dingle, Elizabeth H.

Durham University

https://orcid.org/0000-0003-0651-7337

Seagren, Erin

https://ror.org/0213rcc28

Simon Fraser University

https://orcid.org/0000-0003-1996-9121

Steelquist, Aaron

https://ror.org/0213rcc28;https://ror.org/00f54p054

Simon Fraser University;Stanford University

https://orcid.org/0000-0003-3668-7521

Carr, Julia

https://ror.org/0213rcc28

Simon Fraser University

https://orcid.org/0000-0002-2133-1525

Larsen, Isaac

https://ror.org/0072zz521

University of Massachusetts Amherst

https://orcid.org/0000-0003-3094-4830

Venditti, Jeremy

https://ror.org/0213rcc28

Simon Fraser University

https://orcid.org/0000-0002-2876-4251

2025-01-13T16:31:41Z

2025-01-13T16:31:41Z

2025-01-13

https://doi.org/10.20383/103.01166

https://www.frdr-dfdr.ca/repo/dataset/a5e42126-1727-42fd-ade5-5890eb4ee275

This dataset relates to a publication in revision at Earth Surface Processes & Landforms entitled "Detection of paraglacial sediment supply using detrital 10Be in postglacial landscapes of south west British Columbia". The study uses spatial concentrations of cosmogenic radionuclides (CRNs) to identify sources of sediment in the Fraser River basin, utilizing the observation that CRN concentrations are distinct between glacially derived sediment (from past glacial periods), and sediment produced by contemporary denudation of exposed bedrock. Our observation suggest that despite the prevalence of paraglacial terrace fills in the lower Fraser River basin, glacially-derived sediment sourced from terrace fills only contributes ~15% to the modern Fraser River sediment load.

The key datasets presented here are
1) an inventory of paraglacial terrace surfaces between Soda Creek and Lady Franklin Rock, that were identified from high-resolution LiDAR data using the methods of Clubb et al. (2017) (see Clubb, F.J., Mudd, S.M., Milodowski, D.T., Valters, D.A., Slater, L.J., Hurst, M.D. and Limaye, A.B., 2017. Geomorphometric delineation of floodplains and terraces from objectively defined topographic thresholds. Earth Surface Dynamics, 5(3), pp.369-385.),
2) a simplified regional bedrock geology map,
3) various topographic metrics that are used to compare against landscape denudation rate estimates, and
4) datasets used in the generation of CRN-derived denudation rate estimates across the Fraser River Basin.


Final datasets included in "Detection of paraglacial sediment supply using detrital 10Be in postglacial landscapes of south west British Columbia" by Dingle et al. (in review).

Federated Research Data Repository / dépôt fédéré de données de recherche

Creative Commons Public Domain Dedication (CC0 1.0)

https://creativecommons.org/publicdomain/zero/1.0/

Fraser River

paraglacial terraces

channel morphometry

cosmogenic radionuclides

Paraglacial terrace distribution and landscape morphometry in the Fraser Basin

f163c1b3-9c88-42f6-a7bb-5839ed6c4063

/1/published/publication_1161/

2025

Elizabeth Dingle

Erin Seagren

Aaron Steelquist

Isaac Larsen

Jeremy Venditti

2021-01-01/2022-12-31

Dataset

https://www.frdr-dfdr.ca/repo/dataset/6f6fcb0c-597c-4880-8688-7b69f28a84cd

Fraser River Basin;-;British Columbia;Canada

British Columbia Salmon Restoration Innovation Fund

Landslide Impact on Flow Dynamics, Fish Migration and Genetics of Fraser River Salmon

https://ror.org/01h531d29

Natural Sciences and Engineering Research Council

Discovery Grant and Accelerator Supplement

https://ror.org/02b5d8509

Natural Environment Research Council

NE/X017567/1

RDF1050605

Earth and related environmental sciences

Environmental geoscience

Surface processes

Sciences de la Terre et sciences de l'environnement connexes

Géosciences de l'environnement

Processus de surface

The manuscript that cites this dataset is currently under review at Earth Surface Processes & Landforms