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Earth Interior Dynamics Lab
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A lab that explores the dynamics of Earth's core and computational methods for fluids.
AboutAbout the lab
Exploring flows inside the Earth through computation and theory.
The Earth Interior Dynamics Lab studies the dynamics of Earth's core and the smoothed particle hydrodynamics (SPH) method for simulating fluids.
On the core, the lab investigates dynamo action and the structure of the inner core.
The lab also uses numerical analysis to study how sand dunes and wind ripples form.
The profile in the researcher information database also lists studies of core formation, hydrothermal circulation, and volcanic eruptions.
Key terms
- Dynamo action
- The mechanism by which flow in the core generates a magnetic field
- SPH method
- Smoothed Particle Hydrodynamics. One of the particle methods, which represents a fluid with many particles and computes its motion
- Magnetohydrodynamic waves
- Waves that propagate through an electrically conducting fluid as the fluid and the magnetic field influence each other
ResearchResearch themes
The lab investigates how flows inside the Earth work, using numerical computation and theory. It also researches the methods for computing fluids themselves.
*Illustrative imageHow sand dunes and wind ripples form
The lab studies the formation mechanisms of sand dunes, focusing on dunes and wind ripples. One study uses numerical analysis to test, at the scale of wind ripples, the equation of the Nishimori model, which describes the saltation length (the distance a sand grain travels in a jump).
*Illustrative imageFluid simulation with the SPH method
SPH is one of the particle methods. In a co-authored paper, the lab proposes a way to generalize the conventional method using least squares and to estimate discretization error. The aim is to apply it to mantle convection calculations.
*Illustrative imageDynamics of Earth's core
The lab studies waves in Earth's core, dynamo action, and the structure of the inner core. One paper analyzes magnetohydrodynamic waves on a rotating spherical surface, modeling settings such as the uppermost layer of the core, using numerical computation and theory.
MembersFaculty
The Earth Interior Dynamics Lab consists of faculty, professors emeritus, and doctoral and master's students.
- Associate ProfessorShigeo Yoshida
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “The Day the Earth Smiled - PIA17172” NASA/JPL-Caltech/SSI / Public domain (cropped)
- How sand dunes and wind ripples form: “Asymmetrically rippled sand between Medano Creek & Great Sand Dunes, southern Colorado, USA 3” James St. John / CC BY 2.0 (cropped)
- Fluid simulation with the SPH method: “Fluid simulation created using Blender 3D” Original uploader was Charybdis at en.wikibooks / CC BY-SA 3.0 (cropped)
- Dynamics of Earth's core: “The layers of the Earth model” Rajneesh kumar Thakur / CC BY-SA 4.0 (cropped)
- Related lab (火山科学研究室): “Volcanic Ash Fall Deposits of Tajogaite Volcanic Eruption on La Palma in 2021” Xavier Bolós / CC BY 4.0 (cropped)
- Related lab (地球深部物理学研究室): “June 2014 magnetic field” ESA/DTU Space / Public domain (cropped)
- Related lab (観測地震・火山学研究室 (地震火山観測研究センター)): “Seismometer-iceland” Heidi Soosalu / CC BY-SA 3.0 (cropped)
- Related lab (大気流体力学研究室): “PSM V53 D324 General circulation of atmosphere” 作者不詳 / Public domain (cropped)
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