A Source Term for Wave Attenuation by Sea Ice in WAVEWATCH III(registered trademark): IC4
This document describes IC4, a new source term for attenuation of wave energy due to the presence of ice. IC4 was developed within the framework of WAVEWATCH III (WAVEWATCH III Development Group, 2016). The design criterion for IC4 was a simple, efficient, and flexible implementation of frequency/pe...
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ftdtic:AD1039286 2023-05-15T15:10:46+02:00 A Source Term for Wave Attenuation by Sea Ice in WAVEWATCH III(registered trademark): IC4 Collins,Clarence O Rogers,W E Naval Research Laboratory Stennis Space Center United States 2017-06-07 text/html http://www.dtic.mil/docs/citations/AD1039286 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD1039286 en eng http://www.dtic.mil/docs/citations/AD1039286 Approved For Public Release; Snow Ice and Permafrost open water wave power wave propagation arctic ocean frequency bands oceans acoustic waves attenuation boundary layer ultrasounds step functions sea ice Text 2017 ftdtic 2017-10-29T15:48:56Z This document describes IC4, a new source term for attenuation of wave energy due to the presence of ice. IC4 was developed within the framework of WAVEWATCH III (WAVEWATCH III Development Group, 2016). The design criterion for IC4 was a simple, efficient, and flexible implementation of frequency/period dependent wave attenuation. Within IC4, there are 6 methods called M1-M6. M1 to M4 are taken from the literature, though M1, M2, and M4 permit the user to modify the default coefficients. M5 and M6 are input methods for user-defined step functions. Herein, we describe in detail the implementation in the WAVEWATCH III framework, theoretical and empirical underpinnings of M1-6, give idealized examples, and present a case study based on the data from a field campaign sponsored by the Office of Naval Research. Considering the simplicity of the methods, performance of some IC4 methods in the case study was satisfactory. We demonstrate that frequency dependent attenuation in necessary to replicate the low-pass effect of wave-ice interaction. None of the methods performed universally well under varied ice conditions, which points to the major flaw of a one size fits all approach, i.e. attenuation derived from one kind of ice conditions will inevitably fail to reproduce attenuation under conditions which are quite different. We offer IC4 as simple alternative to more complex formulations of wave-ice interaction, but the user is cautioned to understand its limitations. Text Arctic Arctic Ocean Ice permafrost Sea ice Defense Technical Information Center: DTIC Technical Reports database Arctic Arctic Ocean |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
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ftdtic |
language |
English |
topic |
Snow Ice and Permafrost open water wave power wave propagation arctic ocean frequency bands oceans acoustic waves attenuation boundary layer ultrasounds step functions sea ice |
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Snow Ice and Permafrost open water wave power wave propagation arctic ocean frequency bands oceans acoustic waves attenuation boundary layer ultrasounds step functions sea ice Collins,Clarence O Rogers,W E A Source Term for Wave Attenuation by Sea Ice in WAVEWATCH III(registered trademark): IC4 |
topic_facet |
Snow Ice and Permafrost open water wave power wave propagation arctic ocean frequency bands oceans acoustic waves attenuation boundary layer ultrasounds step functions sea ice |
description |
This document describes IC4, a new source term for attenuation of wave energy due to the presence of ice. IC4 was developed within the framework of WAVEWATCH III (WAVEWATCH III Development Group, 2016). The design criterion for IC4 was a simple, efficient, and flexible implementation of frequency/period dependent wave attenuation. Within IC4, there are 6 methods called M1-M6. M1 to M4 are taken from the literature, though M1, M2, and M4 permit the user to modify the default coefficients. M5 and M6 are input methods for user-defined step functions. Herein, we describe in detail the implementation in the WAVEWATCH III framework, theoretical and empirical underpinnings of M1-6, give idealized examples, and present a case study based on the data from a field campaign sponsored by the Office of Naval Research. Considering the simplicity of the methods, performance of some IC4 methods in the case study was satisfactory. We demonstrate that frequency dependent attenuation in necessary to replicate the low-pass effect of wave-ice interaction. None of the methods performed universally well under varied ice conditions, which points to the major flaw of a one size fits all approach, i.e. attenuation derived from one kind of ice conditions will inevitably fail to reproduce attenuation under conditions which are quite different. We offer IC4 as simple alternative to more complex formulations of wave-ice interaction, but the user is cautioned to understand its limitations. |
author2 |
Naval Research Laboratory Stennis Space Center United States |
format |
Text |
author |
Collins,Clarence O Rogers,W E |
author_facet |
Collins,Clarence O Rogers,W E |
author_sort |
Collins,Clarence O |
title |
A Source Term for Wave Attenuation by Sea Ice in WAVEWATCH III(registered trademark): IC4 |
title_short |
A Source Term for Wave Attenuation by Sea Ice in WAVEWATCH III(registered trademark): IC4 |
title_full |
A Source Term for Wave Attenuation by Sea Ice in WAVEWATCH III(registered trademark): IC4 |
title_fullStr |
A Source Term for Wave Attenuation by Sea Ice in WAVEWATCH III(registered trademark): IC4 |
title_full_unstemmed |
A Source Term for Wave Attenuation by Sea Ice in WAVEWATCH III(registered trademark): IC4 |
title_sort |
source term for wave attenuation by sea ice in wavewatch iii(registered trademark): ic4 |
publishDate |
2017 |
url |
http://www.dtic.mil/docs/citations/AD1039286 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD1039286 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Ice permafrost Sea ice |
genre_facet |
Arctic Arctic Ocean Ice permafrost Sea ice |
op_relation |
http://www.dtic.mil/docs/citations/AD1039286 |
op_rights |
Approved For Public Release; |
_version_ |
1766341725395091456 |