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An enhanced view on the Mediterranean Sea crust from potential fields data
Daniele Sampietro1, Martina Capponi2, Erwan Thébault3
1Geomatics Research & Development srl, 22074, Lomazzo, CO, Italy. daniele.sampietro@g-red.eu.
Scientific Reports
|May 23, 2023
Summary
This study presents a new 3D model of the Mediterranean Sea crust using gravity and magnetic data. It reveals geological structures with high resolution, improving our understanding of Earth's crust.
Area of Science:
- Geophysics
- Earth Science
- Geological Modelling
Background:
- Understanding Earth's crust is vital for resource exploration and geological insights.
- Many regions, including the Mediterranean Sea, have poorly understood crustal structures.
- Global gravity and magnetic field models offer potential for detailed crustal analysis.
Purpose of the Study:
- To develop an advanced three-dimensional (3D) model of the Mediterranean Sea crust.
- To utilize freely available global gravity and magnetic field data for this modelling.
- To achieve unprecedented spatial resolution in mapping crustal structures.
Main Methods:
- Inversion of gravity and magnetic field anomalies.
- Constraining the model with a-priori information like seismic profiles and previous studies.
- Employing a Bayesian algorithm for simultaneous modification of geometry, density, and magnetic susceptibility.
Main Results:
- A 15 km spatial resolution 3D model of the Mediterranean crust.
- Detailed mapping of geological horizons: Plio-Quaternary, Messinian, Pre-Messinian sediments, crystalline crust, and upper mantle.
- Three-dimensional distribution of density and magnetic susceptibility.
Conclusions:
- The study successfully unveils the crustal structure beneath the Mediterranean Sea.
- Demonstrates the value of freely available global gravity and magnetic models for high-resolution Earth crust studies.
- Lays the foundation for future global high-resolution crustal modelling.
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