Thin scattering layers observed by airborne lidar
Churnside, J. H., and Donaghay, P. L. 2009. Thin scattering layers observed by airborne lidar. – ICES Journal of Marine Science, 66: 778–789. More than 2000 km of thin (
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| creator | Churnside, James H. Donaghay, Percy L. |
| description | Churnside, J. H., and Donaghay, P. L. 2009. Thin scattering layers observed by airborne lidar. – ICES Journal of Marine Science, 66: 778–789. More than 2000 km of thin ( |
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H., and Donaghay, P. L. 2009. Thin scattering layers observed by airborne lidar. – ICES Journal of Marine Science, 66: 778–789. More than 2000 km of thin (<3 m) optical scattering layers were identified in 80 000 km of airborne lidar data collected from a variety of oceanic and coastal waters. The spatial characteristics of thin layers varied dramatically from (i) those that were self-contained features consistently <3–4 m thick over their 1–12 km extent to (ii) those that were clearly parts of much longer layers that had gaps and/or regions where the layer became more intense and much thicker than the 3-m criterion. The characteristics of the lidar signal suggest that plankton was the most likely source of scattering. Examples from upwelling regions, areas with large fresh-water influx, and warm-core eddies are presented. The results are quite consistent with the characteristics observed in studies of thin plankton layers in fjords and near-coastal waters. These layers exhibit great spatial variability that is difficult to observe using traditional methods, and examples of layer perturbations by both linear and non-linear internal waves are presented. The results suggest that airborne lidar can be a powerful tool not only for detecting and mapping the spatial extent of thin scattering layers and linking their occurrence to larger scale physical processes, but also for tracking their evolution over time and guiding the ship-based sampling needed to understand their composition, dynamics, and impacts. Such a capability will be crucial in future studies designed to test the hypothesis that thin plankton layers have the spatial extent and intensity to play a key role in controlling the recruitment of fish larvae, biogeochemical cycling, trophic transfer processes, plankton biodiversity, and harmful algal bloom dynamics.</description><identifier>ISSN: 1054-3139</identifier><identifier>EISSN: 1095-9289</identifier><identifier>DOI: 10.1093/icesjms/fsp029</identifier><language>eng</language><publisher>Oxford University Press</publisher><subject>Dynamics ; internal waves ; Lidar ; Marine ; Plankton ; plankton layers ; Scattering ; Thin films ; thin layers ; Upwelling</subject><ispartof>ICES journal of marine science, 2009-05, Vol.66 (4), p.778-789</ispartof><rights>United States Government, Department of Commerce, National Oceanic and Atmospheric Administration 2009. 2009</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c384t-8e0a3bea48455994a0f13c2e3fc446d3e7fe6cfc473c9ebeac385ab8d86fca13</citedby><cites>FETCH-LOGICAL-c384t-8e0a3bea48455994a0f13c2e3fc446d3e7fe6cfc473c9ebeac385ab8d86fca13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,1604,27924,27925</link.rule.ids><linktorsrc>$$Uhttps://dx.doi.org/10.1093/icesjms/fsp029$$EView_record_in_Oxford_University_Press$$FView_record_in_$$GOxford_University_Press</linktorsrc></links><search><creatorcontrib>Churnside, James H.</creatorcontrib><creatorcontrib>Donaghay, Percy L.</creatorcontrib><title>Thin scattering layers observed by airborne lidar</title><title>ICES journal of marine science</title><description>Churnside, J. H., and Donaghay, P. L. 2009. Thin scattering layers observed by airborne lidar. – ICES Journal of Marine Science, 66: 778–789. More than 2000 km of thin (<3 m) optical scattering layers were identified in 80 000 km of airborne lidar data collected from a variety of oceanic and coastal waters. The spatial characteristics of thin layers varied dramatically from (i) those that were self-contained features consistently <3–4 m thick over their 1–12 km extent to (ii) those that were clearly parts of much longer layers that had gaps and/or regions where the layer became more intense and much thicker than the 3-m criterion. The characteristics of the lidar signal suggest that plankton was the most likely source of scattering. Examples from upwelling regions, areas with large fresh-water influx, and warm-core eddies are presented. The results are quite consistent with the characteristics observed in studies of thin plankton layers in fjords and near-coastal waters. These layers exhibit great spatial variability that is difficult to observe using traditional methods, and examples of layer perturbations by both linear and non-linear internal waves are presented. The results suggest that airborne lidar can be a powerful tool not only for detecting and mapping the spatial extent of thin scattering layers and linking their occurrence to larger scale physical processes, but also for tracking their evolution over time and guiding the ship-based sampling needed to understand their composition, dynamics, and impacts. Such a capability will be crucial in future studies designed to test the hypothesis that thin plankton layers have the spatial extent and intensity to play a key role in controlling the recruitment of fish larvae, biogeochemical cycling, trophic transfer processes, plankton biodiversity, and harmful algal bloom dynamics.</description><subject>Dynamics</subject><subject>internal waves</subject><subject>Lidar</subject><subject>Marine</subject><subject>Plankton</subject><subject>plankton layers</subject><subject>Scattering</subject><subject>Thin films</subject><subject>thin layers</subject><subject>Upwelling</subject><issn>1054-3139</issn><issn>1095-9289</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNqFkDFPwzAQRi0EEqWwMmeEIa1d20k8okIpUiUkVAnUxXKcM7ikSfAliP57UqViZbq7T--74RFyzeiEUcWn3gJudzh12NCZOiGjPpWxmmXq9LBLEXPG1Tm5QNxSSlOR0BFh6w9fRWhN20Lw1XtUmj0EjOocIXxDEeX7yPiQ16GCqPSFCZfkzJkS4eo4x2S9eFjPl_Hq-fFpfreKLc9EG2dADc_BiExIqZQw1DFuZ8CdFSIpOKQOEtsfKbcKerCvSZNnRZY4axgfk5vhbRPqrw6w1TuPFsrSVFB3qFmaJUwqJmWPTgbUhhoxgNNN8DsT9ppRfVCjj2r0oKYv3A6Fumv-Z-OB9djCzx9twqdOUp5KvXzb6HvG6HyxedGv_Be1b3f3</recordid><startdate>200905</startdate><enddate>200905</enddate><creator>Churnside, James H.</creator><creator>Donaghay, Percy L.</creator><general>Oxford University Press</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>200905</creationdate><title>Thin scattering layers observed by airborne lidar</title><author>Churnside, James H. ; Donaghay, Percy L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c384t-8e0a3bea48455994a0f13c2e3fc446d3e7fe6cfc473c9ebeac385ab8d86fca13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Dynamics</topic><topic>internal waves</topic><topic>Lidar</topic><topic>Marine</topic><topic>Plankton</topic><topic>plankton layers</topic><topic>Scattering</topic><topic>Thin films</topic><topic>thin layers</topic><topic>Upwelling</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Churnside, James H.</creatorcontrib><creatorcontrib>Donaghay, Percy L.</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>ICES journal of marine science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Churnside, James H.</au><au>Donaghay, Percy L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Thin scattering layers observed by airborne lidar</atitle><jtitle>ICES journal of marine science</jtitle><date>2009-05</date><risdate>2009</risdate><volume>66</volume><issue>4</issue><spage>778</spage><epage>789</epage><pages>778-789</pages><issn>1054-3139</issn><eissn>1095-9289</eissn><abstract>Churnside, J. H., and Donaghay, P. L. 2009. Thin scattering layers observed by airborne lidar. – ICES Journal of Marine Science, 66: 778–789. More than 2000 km of thin (<3 m) optical scattering layers were identified in 80 000 km of airborne lidar data collected from a variety of oceanic and coastal waters. The spatial characteristics of thin layers varied dramatically from (i) those that were self-contained features consistently <3–4 m thick over their 1–12 km extent to (ii) those that were clearly parts of much longer layers that had gaps and/or regions where the layer became more intense and much thicker than the 3-m criterion. The characteristics of the lidar signal suggest that plankton was the most likely source of scattering. Examples from upwelling regions, areas with large fresh-water influx, and warm-core eddies are presented. The results are quite consistent with the characteristics observed in studies of thin plankton layers in fjords and near-coastal waters. These layers exhibit great spatial variability that is difficult to observe using traditional methods, and examples of layer perturbations by both linear and non-linear internal waves are presented. The results suggest that airborne lidar can be a powerful tool not only for detecting and mapping the spatial extent of thin scattering layers and linking their occurrence to larger scale physical processes, but also for tracking their evolution over time and guiding the ship-based sampling needed to understand their composition, dynamics, and impacts. Such a capability will be crucial in future studies designed to test the hypothesis that thin plankton layers have the spatial extent and intensity to play a key role in controlling the recruitment of fish larvae, biogeochemical cycling, trophic transfer processes, plankton biodiversity, and harmful algal bloom dynamics.</abstract><pub>Oxford University Press</pub><doi>10.1093/icesjms/fsp029</doi><tpages>12</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Dynamics internal waves Lidar Marine Plankton plankton layers Scattering Thin films thin layers Upwelling |
| title | Thin scattering layers observed by airborne lidar |
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