Related Experiment Video
Updated: Sep 29, 2025
07:58
Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt
Published on: August 7, 2017
9.5K
Seismic wave simulation using a 3D printed model of the Los Angeles Basin
Sunyoung Park1, Changsoo Shin2, Younglib Kim3
1Department of the Geophysical Sciences, The University of Chicago, Chicago, IL, 60637, USA. sunnypark@uchicago.edu.
Scientific Reports
|March 18, 2022
Summary
This study uses 3D printing to model seismic wave propagation in geological structures. Unexpectedly, sedimentary basins reduced high-frequency seismic energy, challenging traditional views of seismic hazard assessment.
Area of Science:
- Geophysics
- Seismology
- Engineering Geology
Background:
- Seismic wave propagation through complex geological structures is vital for seismic hazard assessment.
- Small-scale geological features like sedimentary basins significantly influence earthquake ground motion, impacting infrastructure.
- Current numerical and analytical methods have limitations in understanding these effects.
Purpose of the Study:
- To investigate seismic wave propagation in complex geological media using a novel physical modeling approach.
- To analyze the impact of sedimentary basins and their edges on high-frequency earthquake ground motion.
- To overcome limitations in existing numerical and analytical methods for geophysical modeling.
Main Methods:
- Utilized 3D printing to create a scaled physical model of the Los Angeles Basin.
- Performed lab-scale seismic experiments using ultrasonic waves to simulate seismic wave propagation.
- Recorded and analyzed wave propagation, including body waves, surface waves, and scattered waves.
Main Results:
- Successfully recorded body and surface waves propagating through the 3D printed model.
- Observed scattered waves originating from the basin edges.
- Found a significant reduction in high-frequency seismic energy within the basin, contrary to amplification theories.
Conclusions:
- 3D printed physical models offer an effective and automated approach for studying geophysical phenomena.
- Sedimentary basins may attenuate, rather than amplify, high-frequency seismic energy.
- This method provides new insights into seismic wave behavior in complex geological settings and aids in seismic hazard assessment.
Related Concept Videos
01:21Design Example: Creating a Hydraulic Model of a Dam Spillway
359
Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.
359
01:12Modeling and Similitude
360
Scaled modeling is a fundamental technique in engineering, enabling the study of large and complex systems by creating smaller, manageable replicas that recreate critical characteristics of the original. In hydrology and civil infrastructure, for example, scaled models of dams help analyze water flow, turbulence, and pressure. This method allows for accurate predictions of real-world behavior within a controlled environment, significantly reducing the cost and time involved in full-scale...
360
01:17Sound as Pressure Waves
2.6K
Sound waves, which are longitudinal waves, can be modeled as the displacement amplitude varying as a function of the spatial and temporal coordinates. As a column of the medium is displaced, its successive columns are also displaced. As the successive displacements differ relatively, a pressure difference with the surrounding pressure is created. The gauge pressure varies across the medium.
The pressure fluctuation depends on the difference in displacements between the successive points in the...
The pressure fluctuation depends on the difference in displacements between the successive points in the...
2.6K
01:30Typical Model Studies
453
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
453
01:19Vibrating Concrete
216
Mechanical vibrators are instrumental in compacting newly poured concrete within formwork and around reinforcements. This process is essential to eliminate trapped air pockets and establish a dense concrete mass. One widely used method is vibrating by internal vibrators, often referred to as a poker vibrator or immersion vibrator. It is rapidly inserted through the full depth of the freshly laid concrete and slightly extends into the layer below it (which remains in a plastic state). Consistent...
216