The partition wavenumber in acoustic backscattering from a two-scale rough surface described by a power-law spectrum
Scattering from the ocean bottom is often assumed to be controlled by two spatial scales: the larger scale associated with reflections from plane facets, and the smaller one associated with diffuse scattering from height variations. Choosing the wavenumber for this partitioning has proven to be impo...
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| Veröffentlicht in: | IEEE journal of oceanic engineering 1994-04, Vol.19 (2), p.200-207 |
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| creator | Novarini, J.C. Caruthers, J.W. |
| description | Scattering from the ocean bottom is often assumed to be controlled by two spatial scales: the larger scale associated with reflections from plane facets, and the smaller one associated with diffuse scattering from height variations. Choosing the wavenumber for this partitioning has proven to be important but troublesome. For this work, scattering data are simulated using Helmholtz-Kirchhoff or physical optics theory and selected input geomorphology. These data are inverted to provide rms slope of facets and rms heights of small-scale roughness using a simple two-scale roughness model introduced previously (J. W. Caruthers and J. C. Novarini, IEEE J. Oceanic Eng., vol. 18, pp. 100-106, 1993). Bottom relief is described by power spectra of the power law form, and the bottom is assumed to be impenetrable. The work introduces a new criterion for effecting this partition based on setting a roughness parameter equal to unity. The criterion is shown to be valid for the cases analyzed based on the ability of the inversion model to recover the input geomorphology.< > |
| doi_str_mv | 10.1109/48.286642 |
| format | Article |
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Choosing the wavenumber for this partitioning has proven to be important but troublesome. For this work, scattering data are simulated using Helmholtz-Kirchhoff or physical optics theory and selected input geomorphology. These data are inverted to provide rms slope of facets and rms heights of small-scale roughness using a simple two-scale roughness model introduced previously (J. W. Caruthers and J. C. Novarini, IEEE J. Oceanic Eng., vol. 18, pp. 100-106, 1993). Bottom relief is described by power spectra of the power law form, and the bottom is assumed to be impenetrable. The work introduces a new criterion for effecting this partition based on setting a roughness parameter equal to unity. 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Choosing the wavenumber for this partitioning has proven to be important but troublesome. For this work, scattering data are simulated using Helmholtz-Kirchhoff or physical optics theory and selected input geomorphology. These data are inverted to provide rms slope of facets and rms heights of small-scale roughness using a simple two-scale roughness model introduced previously (J. W. Caruthers and J. C. Novarini, IEEE J. Oceanic Eng., vol. 18, pp. 100-106, 1993). Bottom relief is described by power spectra of the power law form, and the bottom is assumed to be impenetrable. The work introduces a new criterion for effecting this partition based on setting a roughness parameter equal to unity. The criterion is shown to be valid for the cases analyzed based on the ability of the inversion model to recover the input geomorphology.< ></description><subject>Acoustic scattering</subject><subject>Backscatter</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>External geophysics</subject><subject>Marine</subject><subject>Marine optics and underwater sound</subject><subject>Optical reflection</subject><subject>Optical scattering</subject><subject>Optical surface waves</subject><subject>Physics of the oceans</subject><subject>Rayleigh scattering</subject><subject>Rough surfaces</subject><subject>Sea surface</subject><subject>Surface acoustic waves</subject><subject>Surface roughness</subject><subject>Underwater sound</subject><issn>0364-9059</issn><issn>1558-1691</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1994</creationdate><recordtype>article</recordtype><recordid>eNqF0TtLBDEQB_AgCp6PwtYqhQgWq5lNNpuUIr5AsLl-ySazZ3RfJlmP-_bucYet1UDmlz_MDCEXwG4BmL4T6jZXUor8gCygKFQGUsMhWTAuRaZZoY_JSYyfjIEQpV6QtPxAOpqQfPJDT9fmB_upqzFQ31Njhykmb2lt7Fe0JiUMvl_RJgwdNTSth2x-bZGGYVp90DiFxlikDqMNvkZH683MxmGNIWvNmsYRbQpTd0aOGtNGPN_XU7J8elw-vGRv78-vD_dvmc0VT5ljGoSGnGEtgTnGnHXCKVvoWjvA2iiXw7apLCppGfAGjAFdikKgK_kpud7FjmH4njCmqvPRYtuaHufBqlyLMmdK_Q-VLDXP9b8QpOQcSj7Dmx20YYgxYFONwXcmbCpg1fZQlVDV7lCzvdqHmu02m2B66-PfBwFcKNiyyx3ziPjX3Wf8Au-Nm9k</recordid><startdate>19940401</startdate><enddate>19940401</enddate><creator>Novarini, J.C.</creator><creator>Caruthers, J.W.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TN</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>19940401</creationdate><title>The partition wavenumber in acoustic backscattering from a two-scale rough surface described by a power-law spectrum</title><author>Novarini, J.C. ; Caruthers, J.W.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c283t-d09149120eb610d00dcd4d8c59b9d1eba8d210eb68ce86c013f1aa197454ed73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1994</creationdate><topic>Acoustic scattering</topic><topic>Backscatter</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>External geophysics</topic><topic>Marine</topic><topic>Marine optics and underwater sound</topic><topic>Optical reflection</topic><topic>Optical scattering</topic><topic>Optical surface waves</topic><topic>Physics of the oceans</topic><topic>Rayleigh scattering</topic><topic>Rough surfaces</topic><topic>Sea surface</topic><topic>Surface acoustic waves</topic><topic>Surface roughness</topic><topic>Underwater sound</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Novarini, J.C.</creatorcontrib><creatorcontrib>Caruthers, J.W.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Oceanic Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>IEEE journal of oceanic engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Novarini, J.C.</au><au>Caruthers, J.W.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The partition wavenumber in acoustic backscattering from a two-scale rough surface described by a power-law spectrum</atitle><jtitle>IEEE journal of oceanic engineering</jtitle><stitle>JOE</stitle><date>1994-04-01</date><risdate>1994</risdate><volume>19</volume><issue>2</issue><spage>200</spage><epage>207</epage><pages>200-207</pages><issn>0364-9059</issn><eissn>1558-1691</eissn><coden>IJOEDY</coden><abstract>Scattering from the ocean bottom is often assumed to be controlled by two spatial scales: the larger scale associated with reflections from plane facets, and the smaller one associated with diffuse scattering from height variations. Choosing the wavenumber for this partitioning has proven to be important but troublesome. For this work, scattering data are simulated using Helmholtz-Kirchhoff or physical optics theory and selected input geomorphology. These data are inverted to provide rms slope of facets and rms heights of small-scale roughness using a simple two-scale roughness model introduced previously (J. W. Caruthers and J. C. Novarini, IEEE J. Oceanic Eng., vol. 18, pp. 100-106, 1993). Bottom relief is described by power spectra of the power law form, and the bottom is assumed to be impenetrable. The work introduces a new criterion for effecting this partition based on setting a roughness parameter equal to unity. The criterion is shown to be valid for the cases analyzed based on the ability of the inversion model to recover the input geomorphology.< ></abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/48.286642</doi><tpages>8</tpages></addata></record> |
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| ispartof | IEEE journal of oceanic engineering, 1994-04, Vol.19 (2), p.200-207 |
| issn | 0364-9059 1558-1691 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_28679329 |
| source | IEEE Electronic Library (IEL) |
| subjects | Acoustic scattering Backscatter Earth, ocean, space Exact sciences and technology External geophysics Marine Marine optics and underwater sound Optical reflection Optical scattering Optical surface waves Physics of the oceans Rayleigh scattering Rough surfaces Sea surface Surface acoustic waves Surface roughness Underwater sound |
| title | The partition wavenumber in acoustic backscattering from a two-scale rough surface described by a power-law spectrum |
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