Labs WMT ROMSLIte WaveForcing - Revision history

WikiSysop at 18:11, 16 October 2019

2019-10-16T18:11:26Z

← Older revision		Revision as of 12:11, 16 October 2019
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	Currents are described by their velocity, which includes a speed and a direction.<br><br>		Currents are described by their velocity, which includes a speed and a direction.<br><br>

	[[File:Wave_Diagram.jpg \| 300px \| frame\| none ~~\| http://earthsci.org/processes/weather/waves/Waves.htm~~]]		[[File:Wave_Diagram.jpg \| 300px \| frame\| none ]]
	<br><br>		<br><br>
	Various methods have been used to estimate bed stresses based on hydrodynamic conditions (i.e. waves and currents). For the river plume model run with ROMS-Lite, bed stresses are estimated using the method in Madsen (1994), which uses a two-layer bottom boundary layer formulation. In the output, ROMS provides estimates of the wave-induced, current-induced, and combined maximum wave-and-current-induced bed stresses. Sediment may be resuspended when this combined bed stress exceeds a critical threshold for motion (i.e. the critical shear stress; see Lesson 2). <br><br>		Various methods have been used to estimate bed stresses based on hydrodynamic conditions (i.e. waves and currents). For the river plume model run with ROMS-Lite, bed stresses are estimated using the method in Madsen (1994), which uses a two-layer bottom boundary layer formulation. In the output, ROMS provides estimates of the wave-induced, current-induced, and combined maximum wave-and-current-induced bed stresses. Sediment may be resuspended when this combined bed stress exceeds a critical threshold for motion (i.e. the critical shear stress; see Lesson 2). <br><br>

Overeem: added reference on the growth of river mouth bars

2016-10-21T16:47:48Z

added reference on the growth of river mouth bars

← Older revision		Revision as of 10:47, 21 October 2016
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	* Haidvogel, D.B., H.G. Arango, K. Hedstrom, A. Beckmann, P. Malanotte-Rizzoli, and A.F. Shchepetkin, 2000: Model evaluation experiments in the North Atlantic Basin: Simulations in nonlinear terrain-following coordinates, Dyn. Atmos. Oceans, 32, 239-281.		* Haidvogel, D.B., H.G. Arango, K. Hedstrom, A. Beckmann, P. Malanotte-Rizzoli, and A.F. Shchepetkin, 2000: Model evaluation experiments in the North Atlantic Basin: Simulations in nonlinear terrain-following coordinates, Dyn. Atmos. Oceans, 32, 239-281.
	* Madsen, O.S. Spectral Wave-Current Bottom Boundary Layer Flows. In Proceedings of the 24th International Conference on Coastal Engineering, Kobe, Japan, 23–28 October 1994; American Society of Civil Engineers: Reston, VA, USA, 1994; pp. 384–398.		* Madsen, O.S. Spectral Wave-Current Bottom Boundary Layer Flows. In Proceedings of the 24th International Conference on Coastal Engineering, Kobe, Japan, 23–28 October 1994; American Society of Civil Engineers: Reston, VA, USA, 1994; pp. 384–398.
			* Nardin, W., Mariotti, G., Edmonds, E., Guercio,R., Fagherazzi, S., 2013. Growth of river mouth bars in sheltered bays in teh presence of frontal waves. Journal of Geophysical research, Earth Surface, 118, 872-886, doi:10.1002/jgrf.20057.
	* Warner, Sherwood, Signell, Harris, and Arango, 2008. Development of a three-dimensional, regional, coupled wave, current, and sediment-transport model. Computers & Geosciences.		* Warner, Sherwood, Signell, Harris, and Arango, 2008. Development of a three-dimensional, regional, coupled wave, current, and sediment-transport model. Computers & Geosciences.
	* Wiberg, P.L., and Sherwood, C.R., 2008. Calculating wave-generated bottom orbital velocities from surface-wave parameters. Computers & Geosciences. 34, 1243-1262.		* Wiberg, P.L., and Sherwood, C.R., 2008. Calculating wave-generated bottom orbital velocities from surface-wave parameters. Computers & Geosciences. 34, 1243-1262.
	* [https://www.myroms.org/wiki/Sediment_Model\| More information on the ROMS Sediment transport model]		* [https://www.myroms.org/wiki/Sediment_Model\| More information on the ROMS Sediment transport model]

Ckharris at 19:17, 19 May 2016

2016-05-19T19:17:51Z

← Older revision		Revision as of 13:17, 19 May 2016
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	>> Open a new browser window and open the Web Modeling Tool [https://csdms.colorado.edu/wmt here] and select the ROMS project<br>		>> Open a new browser window and open the Web Modeling Tool [https://csdms.colorado.edu/wmt here] and select the ROMS project<br>
	>> This WMT project is unique in that there is only a single driver, ROMS-Lite. It is a pre-compiled ~~instance~~ of the larger ROMS system specially configured to the river plume case for teaching use.		>> This WMT project is unique in that there is only a single driver, ROMS-Lite. It is a pre-compiled implementation of the larger ROMS system specially configured to the river plume case for teaching use.
	<br><br>		<br><br>
	[[File:Select_ROMSLite_.png \| 400px]]		[[File:Select_ROMSLite_.png \| 400px]]
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	<br><br>		<br><br>

	The numerical experiment has been designed to use idealized inputs (see Lessons 1 and 2), including ~~temporally~~ constant wave energy. The standard inputs for the WMT ROMS-Lite are a significant wave height of 2 m, and a dominant* wave period of 10 s. The direction from which the waves are traveling is set at 1.6 radians measured clockwise from geographic North (nautical convention). Currents in the model vary in response to the river plume entering the shelf, but are generally directed alongshore in response to a larger-scale southward flowing current. Together, the modeled waves and currents affect estimates of bed shear stresses, as well as sediment transport and deposition on the shelf. <br><br>		The numerical experiment has been designed to use idealized inputs (see Lessons 1 and 2), including constant wave energy (steady and uniform waves). The standard wave inputs for the WMT ROMS-Lite are a significant wave height of 2 m, and a wave period of 10 s. The waves are propogating toward shore (direction from which the waves are traveling is set at 1.6 radians measured clockwise from geographic North; nautical convention). Currents in the model vary in response to the river plume entering the shelf, but are generally directed alongshore in response to a larger-scale southward flowing current. Together, the modeled waves and currents affect estimates of bed shear stresses, as well as sediment transport and deposition on the shelf. <br><br>

	'''Waves'''<br>		'''Waves'''<br>
	Energetic waves and currents may increase bed stress, resuspending sediments. Waves are characterized by their wave height, period, length and direction (see the graphic). Important definitions include:		Energetic waves and currents may increase bed stress, resuspending sediments. Waves are characterized by their wave height, period, length and direction (see the graphic). The "waves" here are surface gravity waves that have wave periods of about 6 - 10 seconds in many coastal oceans. They are the waves you see on the beach. For more information about waves, see Chapter 1, "Waves" of the book "Waves, Tides, and Shallow Water Processes" by the Open University Press (1999).

			The ROMS model does not resolve these wave oscillations, but does account for the added stress that they cause on the seabed.

			Important definitions include:
	* Significant wave height (Hs): the mean wave height of the highest third of the waves		* Significant wave height (Hs): the mean wave height of the highest third of the waves
	* Wave period: the amount of time it takes for one wave length to pass a given location		* Wave period: the amount of time it takes for one wave length to pass a given location
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	* Wave orbitals: the circular or elliptical motion that water parcels make under a passing waves		* Wave orbitals: the circular or elliptical motion that water parcels make under a passing waves
	* Wave orbital velocity: the velocity of water as it moves due to passing waves (often used to refer to orbital motions near the seabed)		* Wave orbital velocity: the velocity of water as it moves due to passing waves (often used to refer to orbital motions near the seabed)
	* Wave base: the water depth at which passing waves no longer influence water movement		* Wave base: the water depth beneath which passing waves no longer influence water movement
	Currents are described by their velocity, which includes a speed and a direction.<br><br>		Currents are described by their velocity, which includes a speed and a direction.<br><br>

Moriarty at 04:30, 18 May 2016

2016-05-18T04:30:33Z

← Older revision		Revision as of 22:30, 17 May 2016
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	* Grant, W.D. and Madsen, O.S., 1979. Combined wave and current interaction with a rough bottom. Journal of Geophysical Research, 84(C4) 1797-1808.		* Grant, W.D. and Madsen, O.S., 1979. Combined wave and current interaction with a rough bottom. Journal of Geophysical Research, 84(C4) 1797-1808.
	* Haidvogel, D.B., H.G. Arango, K. Hedstrom, A. Beckmann, P. Malanotte-Rizzoli, and A.F. Shchepetkin, 2000: Model evaluation experiments in the North Atlantic Basin: Simulations in nonlinear terrain-following coordinates, Dyn. Atmos. Oceans, 32, 239-281.		* Haidvogel, D.B., H.G. Arango, K. Hedstrom, A. Beckmann, P. Malanotte-Rizzoli, and A.F. Shchepetkin, 2000: Model evaluation experiments in the North Atlantic Basin: Simulations in nonlinear terrain-following coordinates, Dyn. Atmos. Oceans, 32, 239-281.
			* Madsen, O.S. Spectral Wave-Current Bottom Boundary Layer Flows. In Proceedings of the 24th International Conference on Coastal Engineering, Kobe, Japan, 23–28 October 1994; American Society of Civil Engineers: Reston, VA, USA, 1994; pp. 384–398.
	* Warner, Sherwood, Signell, Harris, and Arango, 2008. Development of a three-dimensional, regional, coupled wave, current, and sediment-transport model. Computers & Geosciences.		* Warner, Sherwood, Signell, Harris, and Arango, 2008. Development of a three-dimensional, regional, coupled wave, current, and sediment-transport model. Computers & Geosciences.
	* Wiberg, P.L., and Sherwood, C.R., 2008. Calculating wave-generated bottom orbital velocities from surface-wave parameters. Computers & Geosciences. 34, 1243-1262.		* Wiberg, P.L., and Sherwood, C.R., 2008. Calculating wave-generated bottom orbital velocities from surface-wave parameters. Computers & Geosciences. 34, 1243-1262.
	* [https://www.myroms.org/wiki/Sediment_Model\| More information on the ROMS Sediment transport model]		* [https://www.myroms.org/wiki/Sediment_Model\| More information on the ROMS Sediment transport model]

Drtarpley at 04:29, 18 May 2016

2016-05-18T04:29:48Z

← Older revision		Revision as of 22:29, 17 May 2016
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	'''References'''		'''References'''
	<br><br>		<br><br>
	* Grant, W.D. and Madsen, O.S., 1979. Combined wave and current interaction with a rough bottom. Journal of Geophysical Research, 84(C4):1797{1808.		* Grant, W.D. and Madsen, O.S., 1979. Combined wave and current interaction with a rough bottom. Journal of Geophysical Research, 84(C4) 1797-1808.
	* Haidvogel, D.B., H.G. Arango, K. Hedstrom, A. Beckmann, P. Malanotte-Rizzoli, and A.F. Shchepetkin, 2000: Model evaluation experiments in the North Atlantic Basin: Simulations in nonlinear terrain-following coordinates, Dyn. Atmos. Oceans, 32, 239-281.		* Haidvogel, D.B., H.G. Arango, K. Hedstrom, A. Beckmann, P. Malanotte-Rizzoli, and A.F. Shchepetkin, 2000: Model evaluation experiments in the North Atlantic Basin: Simulations in nonlinear terrain-following coordinates, Dyn. Atmos. Oceans, 32, 239-281.
	* Warner, Sherwood, Signell, Harris, and Arango, 2008. Development of a three-dimensional, regional, coupled wave, current, and sediment-transport model. Computers & Geosciences.		* Warner, Sherwood, Signell, Harris, and Arango, 2008. Development of a three-dimensional, regional, coupled wave, current, and sediment-transport model. Computers & Geosciences.
	* Wiberg, P.L., and Sherwood, C.R., 2008. Calculating wave-generated bottom orbital velocities from surface-wave parameters. Computers & Geosciences. 34, 1243-1262.		* Wiberg, P.L., and Sherwood, C.R., 2008. Calculating wave-generated bottom orbital velocities from surface-wave parameters. Computers & Geosciences. 34, 1243-1262.
	* [https://www.myroms.org/wiki/Sediment_Model\| More information on the ROMS Sediment transport model]		* [https://www.myroms.org/wiki/Sediment_Model\| More information on the ROMS Sediment transport model]

Moriarty at 04:27, 18 May 2016

2016-05-18T04:27:28Z

← Older revision		Revision as of 22:27, 17 May 2016
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	<br><br>		<br><br>
	Various methods have been used to estimate bed stresses based on hydrodynamic conditions (i.e. waves and currents). For the river plume model run with ROMS-Lite, bed stresses are estimated using the method in Madsen (1994), which uses a two-layer bottom boundary layer formulation. In the output, ROMS provides estimates of the wave-induced, current-induced, and combined maximum wave-and-current-induced bed stresses. Sediment may be resuspended when this combined bed stress exceeds a critical threshold for motion (i.e. the critical shear stress; see Lesson 2). <br><br>		Various methods have been used to estimate bed stresses based on hydrodynamic conditions (i.e. waves and currents). For the river plume model run with ROMS-Lite, bed stresses are estimated using the method in Madsen (1994), which uses a two-layer bottom boundary layer formulation. In the output, ROMS provides estimates of the wave-induced, current-induced, and combined maximum wave-and-current-induced bed stresses. Sediment may be resuspended when this combined bed stress exceeds a critical threshold for motion (i.e. the critical shear stress; see Lesson 2). <br><br>

			How do you expect large vs. small waves to affect sediment deposition on a continental shelf?

	<br><br>		<br><br>

Moriarty at 04:23, 18 May 2016

2016-05-18T04:23:25Z

← Older revision		Revision as of 22:23, 17 May 2016
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	'''Waves'''<br>		'''Waves'''<br>
	Waves are characterized by their wave height, period, length and direction. ~~The highest point on a~~ wave ~~is called~~ the wave ~~crest and~~ the ~~lowest point is called~~ the ~~trough. The distance between~~ the ~~crest and trough is known as the wave height while the distance between two consecutive crests is called the wave length. The~~ amount of time it takes for one wave length to pass ~~is called the~~ wave period~~. The significant wave height (Hs) is defined as~~ the ~~mean wave height of~~ the ~~highest third of~~ the ~~waves. The dominant~~ wave ~~period is~~ the ~~period~~ associated with the waves containing the most energy in a wave ~~package~~. ~~Both currents and~~ waves ~~effect bed stress~~, ~~for more information see Grant~~ and ~~Madsen (1979)~~. <br><br>		Energetic waves and currents may increase bed stress, resuspending sediments. Waves are characterized by their wave height, period, length and direction (see the graphic). Important definitions include:
			* Significant wave height (Hs): the mean wave height of the highest third of the waves
			* Wave period: the amount of time it takes for one wave length to pass a given location
			* Dominant wave period: the period associated with the waves containing the most energy in a wave spectrum
			* Dominant wave direction: the direction associated with the waves containing the most energy in a wave spectrum (typically the direction from which the waves are traveling).
			* Wave orbitals: the circular or elliptical motion that water parcels make under a passing waves
			* Wave orbital velocity: the velocity of water as it moves due to passing waves (often used to refer to orbital motions near the seabed)
			* Wave base: the water depth at which passing waves no longer influence water movement
			Currents are described by their velocity, which includes a speed and a direction.<br><br>

	[[File:Wave_Diagram.jpg \| 300px \| frame\| none \| http://earthsci.org/processes/weather/waves/Waves.htm]]		[[File:Wave_Diagram.jpg \| 300px \| frame\| none \| http://earthsci.org/processes/weather/waves/Waves.htm]]
			<br><br>
			Various methods have been used to estimate bed stresses based on hydrodynamic conditions (i.e. waves and currents). For the river plume model run with ROMS-Lite, bed stresses are estimated using the method in Madsen (1994), which uses a two-layer bottom boundary layer formulation. In the output, ROMS provides estimates of the wave-induced, current-induced, and combined maximum wave-and-current-induced bed stresses. Sediment may be resuspended when this combined bed stress exceeds a critical threshold for motion (i.e. the critical shear stress; see Lesson 2). <br><br>

	<br><br>		<br><br>

Drtarpley at 04:01, 18 May 2016

2016-05-18T04:01:59Z

← Older revision		Revision as of 22:01, 17 May 2016
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	'''Waves'''<br>		'''Waves'''<br>
	Waves are characterized by their wave height, period, length and direction. The highest point on a wave is called the wave crest and the lowest point is called the trough. The distance between the crest and trough is known as the wave height while the distance between two consecutive crests is called the wave length. The amount of time it takes for one wave length to pass is called the wave period. The significant wave height (Hs) is defined as the mean wave height of the highest third of the waves. The dominant wave period is the period associated with the waves containing the most energy in a wave package. Both currents and waves effect bed stress, for more information see Grant and Madsen (1979).		Waves are characterized by their wave height, period, length and direction. The highest point on a wave is called the wave crest and the lowest point is called the trough. The distance between the crest and trough is known as the wave height while the distance between two consecutive crests is called the wave length. The amount of time it takes for one wave length to pass is called the wave period. The significant wave height (Hs) is defined as the mean wave height of the highest third of the waves. The dominant wave period is the period associated with the waves containing the most energy in a wave package. Both currents and waves effect bed stress, for more information see Grant and Madsen (1979). <br><br>

			[[File:Wave_Diagram.jpg \| 300px \| frame\| none \| http://earthsci.org/processes/weather/waves/Waves.htm]]

	<br><br>		<br><br>

Drtarpley at 03:55, 18 May 2016

2016-05-18T03:55:11Z

← Older revision		Revision as of 21:55, 17 May 2016
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	The numerical experiment has been designed to use idealized inputs (see Lessons 1 and 2), including temporally constant wave energy. The standard inputs for the WMT ROMS-Lite are a significant wave height of 2 m, and a dominant* wave period of 10 s. The direction from which the waves are traveling is set at 1.6 radians measured clockwise from geographic North (nautical convention). Currents in the model vary in response to the river plume entering the shelf, but are generally directed alongshore in response to a larger-scale southward flowing current. Together, the modeled waves and currents affect estimates of bed shear stresses, as well as sediment transport and deposition on the shelf. <br><br>		The numerical experiment has been designed to use idealized inputs (see Lessons 1 and 2), including temporally constant wave energy. The standard inputs for the WMT ROMS-Lite are a significant wave height of 2 m, and a dominant* wave period of 10 s. The direction from which the waves are traveling is set at 1.6 radians measured clockwise from geographic North (nautical convention). Currents in the model vary in response to the river plume entering the shelf, but are generally directed alongshore in response to a larger-scale southward flowing current. Together, the modeled waves and currents affect estimates of bed shear stresses, as well as sediment transport and deposition on the shelf. <br><br>

	'''Waves'''		'''Waves'''<br>
	Waves are characterized by their wave height, period, length and direction. The highest point on a wave is called the wave crest and the lowest point is called the trough. The distance between the crest and trough is known as the wave height while the distance between two consecutive crests is called the wave length. The amount of time it takes for one wave length to pass is called the wave period. The significant wave height (Hs) is defined as the mean wave height of the highest third of the waves. The dominant wave period is the period associated with the waves containing the most energy in a wave package. Both currents and waves effect bed stress, for more information see Grant and Madsen (1979).		Waves are characterized by their wave height, period, length and direction. The highest point on a wave is called the wave crest and the lowest point is called the trough. The distance between the crest and trough is known as the wave height while the distance between two consecutive crests is called the wave length. The amount of time it takes for one wave length to pass is called the wave period. The significant wave height (Hs) is defined as the mean wave height of the highest third of the waves. The dominant wave period is the period associated with the waves containing the most energy in a wave package. Both currents and waves effect bed stress, for more information see Grant and Madsen (1979).

Drtarpley at 03:52, 18 May 2016

2016-05-18T03:52:12Z

← Older revision		Revision as of 21:52, 17 May 2016
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	[[File:Select_ROMSLite_.png \| 400px]]		[[File:Select_ROMSLite_.png \| 400px]]
	[[File:ROMS_liteDriver.png \| 300px]]		[[File:ROMS_liteDriver.png \| 300px]]
	<br>		<br><br>
	The numerical experiment has been designed to use idealized inputs (see Lessons 1 and 2), including temporally constant wave energy. The standard inputs for the WMT ROMS-Lite are a significant wave height of 2 m, and a dominant* wave period of 10 s. The direction from which the waves are traveling is set at 1.6 radians measured clockwise from geographic North (nautical convention). Currents in the model vary in response to the river plume entering the shelf, but are generally directed alongshore in response to a larger-scale southward flowing current. Together, the modeled waves and currents affect estimates of bed shear stresses, as well as sediment transport and deposition on the shelf.
	<br>		The numerical experiment has been designed to use idealized inputs (see Lessons 1 and 2), including temporally constant wave energy. The standard inputs for the WMT ROMS-Lite are a significant wave height of 2 m, and a dominant* wave period of 10 s. The direction from which the waves are traveling is set at 1.6 radians measured clockwise from geographic North (nautical convention). Currents in the model vary in response to the river plume entering the shelf, but are generally directed alongshore in response to a larger-scale southward flowing current. Together, the modeled waves and currents affect estimates of bed shear stresses, as well as sediment transport and deposition on the shelf. <br><br>

	'''Waves'''		'''Waves'''