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Part 1: Document Description
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Citation |
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Title: |
Modeling dike propagation in both the vertical and horizontal directions |
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Identification Number: |
doi:10.21979/N9/OSFYC0 |
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Distributor: |
DR-NTU (Data) |
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Date of Distribution: |
2021-08-12 |
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Version: |
1 |
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Bibliographic Citation: |
Emadzadeh, Adel, 2021, "Modeling dike propagation in both the vertical and horizontal directions", https://doi.org/10.21979/N9/OSFYC0, DR-NTU (Data), V1 |
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Citation |
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Title: |
Modeling dike propagation in both the vertical and horizontal directions |
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Identification Number: |
doi:10.21979/N9/OSFYC0 |
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Authoring Entity: |
Emadzadeh, Adel (Nanyang Technological University) |
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Software used in Production: |
Matlab |
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Distributor: |
DR-NTU (Data) |
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Access Authority: |
Emadzadeh, Adel |
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Depositor: |
Emadzadeh, Adel |
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Date of Deposit: |
2021-08-12 |
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Holdings Information: |
https://doi.org/10.21979/N9/OSFYC0 |
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Study Scope |
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Keywords: |
Earth and Environmental Sciences, Earth and Environmental Sciences, dike, magma ascent |
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Abstract: |
This data in the repository is related to a submitted research paper by Pansino et al. The key points about this paper are: -Analogue experiments indicate that dike thickness can be well modeled by the balance of elastic and viscous forces -The proportion of propagation in the vertical to horizontal directions depends on the buoyancy and source pressures -We numerically model propagation in both the vertical and horizontal directions, allowing the forces acting on the dike to evolve as the dike grows -We test the model on several dikes from Piton de la Fournaise and found that it can accurately model the geometries and propagation rates -The best-fitting model has plausible values for the magma buoyancy, viscosity and host rock shear modulus Plain language summary Magma-filled cracks, also known as dikes, grow through the Earth’s crust and can feed volcanic eruptions. Building reliable models of how they grow, and at what speed they grow, is important for forecasting future eruptions. Dike growth models typically consider just one direction, so that they can grow only in length. Doing so allows for mathematical simplifications and the resulting models are efficient to run. We make a new model, using experimental data which shows that the fracture’s horizontal and vertical growth are proportional to physical forces like buoyancy. When dikes have a low buoyancy, they can grow both vertically and horizontally, but as they become more buoyant, they grow primarily vertically. We test our model against past eruptions at Piton de la Fournaise, a highly active volcano that is located off the eastern coast of Madagascar. We find under certain conditions, the model can reproduce the sizes and velocities of the dikes. These conditions help us to understand what happens at the volcano. |
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Kind of Data: |
experimental and numerical data |
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Methodology and Processing |
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Sources Statement |
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Data Access |
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Other Study Description Materials |
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Label: |
Data for Pansino et al 2021.7z |
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Text: |
Please use the software 7Zip to unzip and use |
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Notes: |
application/x-7z-compressed |