English
 
Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
 
 
DownloadE-Mail
 Local TagsRelease HistoryDetailsSummary
  Reconstructing the history of flowing waters from freshwater mussel shells in the context of interdecadal climate variability

Türk, G., Gey, C., Schöne, B., Pfister, L., Thielen, F., Hissler, C., Barnich, F., Léonard, L. (2023): Reconstructing the history of flowing waters from freshwater mussel shells in the context of interdecadal climate variability, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4470

Item is

 

show all hide all

Basic

show hide
Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021899 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021899_1
Genre: Conference Paper

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Türk, Guilhem1, Author
Gey, Christoph1, Author
Schöne, Bernd1, Author
Pfister, Laurent1, Author
Thielen, Frankie1, Author
Hissler, Christophe1, Author
Barnich, François1, Author
Léonard, Loic1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

Content

show
hide
Free keywords: -
 Abstract: Facing the ongoing intensification of the hydrological cycle, stable isotopes of O and H in streams and precipitation are cardinal tools to identify and assess the factors controlling catchment resilience to climate change. However, progress is stymied by the uncertainty related to the spatial and temporal variability of these tracers, mostly due to the limited availability of long-term historical observations. Here, we propose two complementary innovative approaches for reconstructing pre-instrumental δ18O series in precipitation and stream water.First, we conjecture that oxygen isotopes inside the mineral structures of freshwater bivalve shells hold promising potential to extend limited stream water isotope records. Certain species can live up to 200 years (e.g., Margaritifera Margaritifera), and nearly 1200 species inhabit a large variety of river systems and lakes around the globe. Proof-of-concept work has already shown that shell-extracted δ18O values closely mirror the variance of the measured stream water δ18O – both showing a strong damping of the precipitation signal. Building on this, shell δ18O chronologies were generated from three recently collected individuals collected from the Our River (L) extending back to the 1960s, comprising over 3000 samples. Our second conjecture, which we focus on here, states that precipitation δ18O series may be reconstructed from historical atmospheric circulation data. Based on a 6 year-worth sub-daily resolution isotope dataset collected at the meteorological station in Belvaux (L) from 2017 to 2022, we built a multiple linear regression model explaining almost 50 percent of the sub-daily variance, and closely matching the monthly δ18O signal.

Details

show
hide
Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-4470
 Degree: -

Event

show
hide
Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

Legal Case

show

Project information

show

Source 1

show
hide
Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
 Creator(s):
Affiliations:
Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: -