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Incident Wave Height is obtained as the arithmetic mean of the wave heights measured by two gauges separated by a quarter of a wavelength [length]. Check FAQs
Hi=Ncos(2πxLo)cos(2πtT)
Hi - Incident Wave Height?N - Water Surface Amplitude?x - Horizontal Ordinate?Lo - Incident Wave Length in Deepwater?t - Time Elapsed?T - Reflected Wave Period?π - Archimedes' constant?

Incident Wave Height given Water Surface Amplitude Example

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With units
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Here is how the Incident Wave Height given Water Surface Amplitude equation looks like with Values.

Here is how the Incident Wave Height given Water Surface Amplitude equation looks like with Units.

Here is how the Incident Wave Height given Water Surface Amplitude equation looks like.

157.2228Edit=78.78Editcos(23.141638.5Edit16Edit)cos(23.141612Edit34Edit)
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Incident Wave Height given Water Surface Amplitude Solution

Follow our step by step solution on how to calculate Incident Wave Height given Water Surface Amplitude?

FIRST Step Consider the formula
Hi=Ncos(2πxLo)cos(2πtT)
Next Step Substitute values of Variables
Hi=78.78mcos(2π38.516m)cos(2π12s34s)
Next Step Substitute values of Constants
Hi=78.78mcos(23.141638.516m)cos(23.141612s34s)
Next Step Prepare to Evaluate
Hi=78.78cos(23.141638.516)cos(23.14161234)
Next Step Evaluate
Hi=157.222792494552m
LAST Step Rounding Answer
Hi=157.2228m

Incident Wave Height given Water Surface Amplitude Formula Elements

Variables
Constants
Functions
Incident Wave Height
Incident Wave Height is obtained as the arithmetic mean of the wave heights measured by two gauges separated by a quarter of a wavelength [length].
Symbol: Hi
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Water Surface Amplitude
Water Surface Amplitude is the maximum vertical distance between the highest and lowest points of a water surface wave.
Symbol: N
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Horizontal Ordinate
Horizontal Ordinate refers to the distance measured horizontally from a reference point or axis.
Symbol: x
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Incident Wave Length in Deepwater
Incident Wave Length in Deepwater is the wave length of the wave that travels from the generating source towards the load.
Symbol: Lo
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Time Elapsed
Time Elapsed is the total duration that has passed from the start of an event to a specific point in time, typically measured in seconds, minutes, or hours.
Symbol: t
Measurement: TimeUnit: s
Note: Value should be greater than 0.
Reflected Wave Period
Reflected Wave Period is the time interval between successive crests or troughs of a wave after it reflects off a surface, measured in seconds (s).
Symbol: T
Measurement: TimeUnit: s
Note: Value can be positive or negative.
Archimedes' constant
Archimedes' constant is a mathematical constant that represents the ratio of the circumference of a circle to its diameter.
Symbol: π
Value: 3.14159265358979323846264338327950288
cos
Cosine of an angle is the ratio of the side adjacent to the angle to the hypotenuse of the triangle.
Syntax: cos(Angle)

Other Formulas to find Incident Wave Height

​Go Incident Wave Height given Surf Similarity Number or Iribarren Number
Hi=Lo(tan(α)Ir)2

Other formulas in Wave Transmission Coefficient and Water Surface Amplitude category

​Go Wave Transmission Coefficient
Ct=C(1-(FR))
​Go Dimensionless Coefficient in Seelig Equation for Wave Transmission Coefficient
C=Ct1-(FR)
​Go Freeboard for given Wave Transmission Coefficient
F=R(1-(CtC))
​Go Wave Runup above Mean Water Level for given Wave Transmission Coefficient
R=F1-(CtC)

How to Evaluate Incident Wave Height given Water Surface Amplitude?

Incident Wave Height given Water Surface Amplitude evaluator uses Incident Wave Height = Water Surface Amplitude/(cos((2*pi*Horizontal Ordinate)/Incident Wave Length in Deepwater)*cos((2*pi*Time Elapsed)/Reflected Wave Period)) to evaluate the Incident Wave Height, Incident Wave Height given Water Surface Amplitude is defined as wave depth parameter influencing water surface amplitude of profile view of water surface envelope positions for wave reflecting from wall that has reflection coefficient equal to unity. Incident Wave Height is denoted by Hi symbol.

How to evaluate Incident Wave Height given Water Surface Amplitude using this online evaluator? To use this online evaluator for Incident Wave Height given Water Surface Amplitude, enter Water Surface Amplitude (N), Horizontal Ordinate (x), Incident Wave Length in Deepwater (Lo), Time Elapsed (t) & Reflected Wave Period (T) and hit the calculate button.

FAQs on Incident Wave Height given Water Surface Amplitude

What is the formula to find Incident Wave Height given Water Surface Amplitude?
The formula of Incident Wave Height given Water Surface Amplitude is expressed as Incident Wave Height = Water Surface Amplitude/(cos((2*pi*Horizontal Ordinate)/Incident Wave Length in Deepwater)*cos((2*pi*Time Elapsed)/Reflected Wave Period)). Here is an example- 159.9836 = 78.78/(cos((2*pi*38.5)/16)*cos((2*pi*12)/34)).
How to calculate Incident Wave Height given Water Surface Amplitude?
With Water Surface Amplitude (N), Horizontal Ordinate (x), Incident Wave Length in Deepwater (Lo), Time Elapsed (t) & Reflected Wave Period (T) we can find Incident Wave Height given Water Surface Amplitude using the formula - Incident Wave Height = Water Surface Amplitude/(cos((2*pi*Horizontal Ordinate)/Incident Wave Length in Deepwater)*cos((2*pi*Time Elapsed)/Reflected Wave Period)). This formula also uses Archimedes' constant and Cosine (cos) function(s).
What are the other ways to Calculate Incident Wave Height?
Here are the different ways to Calculate Incident Wave Height-
  • Incident Wave Height=Incident Wave Length in Deepwater*(tan(Angle Sloped Plane forms with the Horizontal)/Surf Similarity Number or Iribarren Number)^2OpenImg
Can the Incident Wave Height given Water Surface Amplitude be negative?
No, the Incident Wave Height given Water Surface Amplitude, measured in Length cannot be negative.
Which unit is used to measure Incident Wave Height given Water Surface Amplitude?
Incident Wave Height given Water Surface Amplitude is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Incident Wave Height given Water Surface Amplitude can be measured.
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