Related Experiment Video
Updated: Aug 22, 2025
08:54
Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing
Published on: February 13, 2018
8.8K
Ship wave patterns on floating ice sheets
Kristoffer Johnsen1, Henrik Kalisch2, Emilian I Părău3
1Department of Mathematics, University of Bergen, Postbox 7800, 5020, Bergen, Norway.
Scientific Reports
|November 7, 2022
Summary
Investigating a moving load on floating ice, this study reveals that turning can amplify wave patterns and ice strain, potentially causing fractures and failure. This research is crucial for understanding ice mechanics under dynamic loading conditions.
Area of Science:
- Fluid mechanics
- Ice physics
- Solid mechanics
Background:
- Floating ice sheets are critical components of polar regions and are susceptible to dynamic loads.
- Understanding ice response to moving loads is essential for predicting ice stability and failure.
- Previous studies have primarily focused on straight-line load paths.
Purpose of the Study:
- To investigate the response of a floating ice sheet to a load moving along a curved path.
- To analyze the influence of turning maneuvers on wave generation and strain distribution within the ice.
- To identify conditions under which turning may lead to increased stress and potential ice failure.
Main Methods:
- Utilizing a linearized system of differential equations for ice sheet dynamics.
- Solving the governing equations with spatial Fourier and temporal Laplace transforms.
- Validating the model against established results for straight-line load cases.
Main Results:
- Turning of the load significantly alters wave patterns and strain distribution compared to straight-line motion.
- Curved load paths can lead to increased wave amplitude and localized strain concentrations.
- These amplified stresses indicate a higher susceptibility to crack formation and fracturing.
Conclusions:
- The turning of a moving load is a critical factor influencing the structural integrity of floating ice sheets.
- Curved trajectories can exacerbate ice stress, increasing the risk of failure.
- This research provides new insights into ice mechanics, essential for predicting ice behavior in dynamic scenarios.
Related Concept Videos
01:04Travelling Waves
5.4K
A wave is a disturbance that propagates from its source, repeating itself periodically, and is typically associated with simple harmonic motion. Mechanical waves are governed by Newton's laws and require a medium to travel. A medium is a substance in which a mechanical wave propagates, and the medium produces an elastic restoring force when it is deformed.
Water waves, sound waves, and seismic waves are some examples of mechanical waves. For water waves, the wave propagation medium is...
Water waves, sound waves, and seismic waves are some examples of mechanical waves. For water waves, the wave propagation medium is...
5.4K
01:10Wave Parameters
7.9K
The simplest mechanical waves are associated with simple harmonic motion and repeat themselves for several cycles. These simple harmonic waves can be modeled using a combination of sine and cosine functions. Consider a simplified surface water wave that moves across the water's surface. Unlike complex ocean waves, in surface water waves, water moves vertically, oscillating up and down, whereas the disturbance of the wave moves horizontally through the medium. If a seagull is floating on the...
7.9K
01:07Propagation of Waves
2.4K
When a wave propagates from one medium to another, part of it may get reflected in the first medium, and part of it may get transmitted to the second medium. In such a case, the interface of the two mediums can be considered as a boundary that is neither fixed nor free.
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
2.4K
01:07Interference and Superposition of Waves
5.4K
When two waves of the same nature occur in the same region simultaneously, they result in interference. Interference of waves implies that the net effect of the waves is the sum of the individual waves' effects. However, it does not imply that the individual waves affect the propagation of other waves.
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
5.4K
02:18Interference and Diffraction
41.6K
Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
41.6K
01:07Reflection of Waves
3.8K
When a wave travels from one medium to another, it gets reflected at the boundary of the second medium. A common example of this is when a person yells at a distance from a cliff and hears the echo of their voice. The sound waves (longitudinal waves) traveling in the air are reflected from the bounding cliff. Similarly, flipping one end of a string whose other end is tied to a wall causes a pulse (transverse wave) to travel through the string, which gets reflected upon reaching the wall. In...
3.8K