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Updated: May 18, 2026
09:58
Investigating the Three-dimensional Flow Separation Induced by a Model Vocal Fold Polyp
Published on: February 3, 2014
Hydrodynamic-driven stability analysis of morphological patterns on stalactites and implications for cave paleoflow
Carlo Camporeale1, Luca Ridolfi
1Department of Environment, Land, and Infrastructure Engineering, Politecnico di Torino, Corso Duca Abruzzi 24, 10129, Turin, Italy. carlo.camporeale@polito.it
Physical Review Letters
|September 26, 2012
Summary
This study models speleothem surface patterns using fluid dynamics and geochemistry. The findings suggest speleothem ridge velocity can reveal past water flow rates for paleoclimate research.
Area of Science:
- Geology
- Geochemistry
- Fluid Dynamics
Background:
- Speleothems, or secondary cave deposits, exhibit surface patterns like crenulations.
- Understanding the formation of these patterns is key to interpreting past environmental conditions.
Purpose of the Study:
- To develop a hydrodynamic model for speleothem surface pattern formation.
- To investigate the relationship between fluid dynamics and geochemical processes in pattern development.
- To assess the potential of speleothem patterns as paleoclimate proxies.
Main Methods:
- Coupling fluid dynamics with geochemical models of calcite precipitation/dissolution.
- Applying falling film theory to analyze flow fields and depth perturbations.
- Analyzing pattern characteristics such as dominant wavelengths and phase velocities across various Reynolds numbers.
Main Results:
- The model successfully predicts dominant wavelengths and pattern celerities for speleothem surface patterns.
- Depth perturbations are identified as critical triggers for crenulation formation.
- Model predictions show good agreement with existing field data.
Conclusions:
- Hydrodynamic forces play a significant role in shaping speleothem surface patterns.
- Speleothem ridge phase velocity can serve as a proxy for past film flow rates.
- This research offers a novel approach to paleoclimate analysis using speleothem records.
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