GreenFjord
Published August 14, 2025 | Version v1
Dataset Open

Code and Data for: Calving-driven fjord dynamics resolved by seafloor fibre sensing

Creators

  • 1. EDMO icon University of Washington
  • 2. EDMO icon ETH Zürich
  • 3. ROR icon University of Zurich
  • 4. ROR icon Tufts University
  • 5. Swiss Federal Institute of Technology (ETH) Zurich
  • 6. Swiss Federal Research Institute WSL
  • 7. ROR icon École Polytechnique Fédérale de Lausanne
  • 8. ROR icon Université Côte d'Azur
  • 9. EDMO icon Stanford University
  • 10. ROR icon GEOMAR Helmholtz Centre for Ocean Research Kiel
  • 11. ROR icon ETH Zurich
  • 12. CEREMA Direction Méditerranée
  • 13. ROR icon Swiss Federal Institute for Forest, Snow and Landscape Research
  • 14. CNRS
  • 15. ROR icon Institut de physique du globe de Paris

Description

This repository supports the study “Calving-driven fjord dynamics resolved by seafloor fibre sensing” (Gräff et al. 2025, Nature) and contains data and code for figure generation and analysis. It includes Distributed Acoustic Sensing (DAS) and Distributed Temperature Sensing (DTS) data collected via a seafloor fiber-optic cable along the calving front of Eqalorutsit Kangilliit Sermiat (Qajuuttap Sermia), as well as conductivity-temperature-depth (CTD) profiles, terrestrial interferometric radar, tide gauge, seismic, bathymetry, satellite observations, and tsunami model output. Data are organized by type, with documentation provided in the README.md file. Jupyter notebooks reproduce the main and extended data figures in the manuscript, and additional analysis. 

Files

CalvingFiberSensing_CodeData_v1.0_Graeff2025.zip

Files (72.6 GB)

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Additional details

Related works

Is supplement to
Publication: 10.1038/s41586-025-09347-7 (DOI)

Funding

U.S. National Science Foundation
Collaborative Research: GreenFjord-FIBER, Observing the Ice-Ocean Interface with Exceptional Resolution 2338502
U.S. National Science Foundation
Collaborative Research: GreenFjord-FIBER, Observing the Ice-Ocean Interface with Exceptional Resolution 2338503
Swiss Polar Institute
Greenlandic Fjord ecosystems in a changing climate: Socio-cultural and environmental interactions SPI-FLAG-2021-002