Ocean Environment: Metocean Conditions

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What is an ocean wave?

A disturbance caused by energy moving through fire mass

A disturbance caused by energy moving through land mass

A disturbance caused by energy moving through air mass

A disturbance caused by energy moving through water mass (correct)

What represents the highest part of a wave?

Wave amplitude

Wave trough

Wave crest (correct)

Wave period

Which forces disturb water to create ocean waves?

Sunlight, moonlight, starlight

Volcanic eruptions, tornadoes, hurricanes

Wind, displacement, changes in atmospheric pressure (correct)

Rain, snow, hail

What is the dominant force trying to return the water surface to flat?

Surface tension & gravity Signup and view all the answers

What is the simplest form of ocean waves?

Sinusoidal Signup and view all the answers

Which factor affects the size of waves generated by the wind?

The strength of the wind Signup and view all the answers

What does metocean refer to?

The combined effect of meteorology and oceanography Signup and view all the answers

Which of the following is included in metocean condition?

Local surface wind and wind-generated local waves Signup and view all the answers

How does temperature affect density, viscosity, and salinity in water?

Temperature affects all three properties Signup and view all the answers

What does salinity refer to in the context of ocean water properties?

Average salt content in water Signup and view all the answers

In the open sea, what is the average salinity percentage?

3.5% Signup and view all the answers

What can differences in density in different layers of water with depth create?

Internal waves in deeper regions Signup and view all the answers

What does the symbol 'L' represent in wave theory?

Wavelength Signup and view all the answers

Which parameter represents the propagation speed of the wave crest?

Wave celerity Signup and view all the answers

What is the reciprocal of period in wave theory?

Frequency Signup and view all the answers

Which parameter represents the instantaneous elevation of the wave from the still water level?

Wave elevation Signup and view all the answers

What does 'u' represent in wave theory?

Horizontal water particle velocity Signup and view all the answers

Which parameter represents the instantaneous acceleration along y of a water particle?

Vertical water particle acceleration Signup and view all the answers

What is the primary cause of tsunamis?

Underwater disturbances like earthquakes, landslides, or volcanic eruptions Signup and view all the answers

Which of the following waves have a wavelength between 1-10 meters?

Swell Signup and view all the answers

Which characteristic distinguishes swell from seas?

Swell waves are more regular and have well-defined crests and troughs Signup and view all the answers

What is the typical wave period range for swell waves?

Greater than 10 seconds Signup and view all the answers

Which of the following waves can reach heights of 40 meters or more?

Tsunami Signup and view all the answers

What is the typical wavelength range for capillary waves?

Less than 2 cm Signup and view all the answers

What type of wave theory does the given text describe?

Linear Wave Theory Signup and view all the answers

Which statement about linear wave theory is correct?

It is an approximation of the Stokes Theory. Signup and view all the answers

What is a requirement for linear wave theory to be applicable?

The waves must have equal crest and trough amplitudes. Signup and view all the answers

Why is linear wave theory widely used, according to the text?

It is less mathematically complex than other wave theories. Signup and view all the answers

For what type of waves is linear wave theory most accurate?

Low amplitude waves in deep water Signup and view all the answers