<ctx:context-object xsi:schemaLocation="info:ofi/fmt:xml:xsd:ctx http://www.openurl.info/registry/docs/info:ofi/fmt:xml:xsd:ctx" timestamp="2018-04-19T01:59:09Z" xmlns:ctx="info:ofi/fmt:xml:xsd:ctx" xmlns:xsi="http://www.w3.org/2001/XML"><ctx:referent><ctx:identifier>info:oai:jdecs1.ecs.soton.ac.uk:6184</ctx:identifier><ctx:metadata-by-val><ctx:format>info:ofi/fmt:xml:xsd:oai_dc</ctx:format><ctx:metadata><oai_dc:dc xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:dc="http://purl.org/dc/elements/1.1/">
        <dc:title>Seabed discrimination data from SeaScan™</dc:title>
        <dc:creator>Brown, Ian Walkden.</dc:creator>
        <dc:subject>Science (General)</dc:subject>
        <dc:description>Raw data from SeaScan™ transects off Wide Bay (south Queensland) taken in August 2007 as part of a study of ecological factors influencing the distribution of spanner crabs (Ranina ranina). The dataset (comma-delimited ascii file) comprises the following fields: &#13;
&#13;
1.	record number&#13;
2.	date-time (GMT)&#13;
3.	date-time (AEST)&#13;
4.	latitude (signed decimal degrees)&#13;
5.	longitude (decimal degrees)&#13;
6.	speed over ground (knots)&#13;
7.	depth (m)&#13;
8.	seabed roughness (v) &#13;
9.	hardness (v) &#13;
&#13;
Indices of roughness and hardness (from the first and second echoes respectively) were obtained using a SeaScan™ 100 system (un-referenced) on board the Research Vessel Tom Marshall, with the ship’s Furuno FCV 1100 echo sounder and 1 kW, 50 kHz transducer. Generally vessel speed was kept below about 14 kt (typically ~12 kt), and the echo-sounder range set to 80 m. The data were filtered to remove errors due to data drop-out, straying beyond system depth limits (min. 10 m), or transducer interference.</dc:description>
        <dc:type>Dataset</dc:type>
        <dc:type>PeerReviewed</dc:type>
        <dc:format>text/plain</dc:format>
        <dc:relation>http://era.daf.qld.gov.au/id/eprint/6184/1/SeaScan_31Aug2007_dataset.asc</dc:relation>
        <dc:identifier>   Brown, I. W.   Seabed discrimination data from SeaScan™.  Department of Agriculture, Fisheries and Forestry, Qld. [Dataset]    </dc:identifier>
        <dc:identifier>http://era.daf.qld.gov.au/id/eprint/6184/</dc:identifier>
        <dc:relation>http://era.daf.qld.gov.au/id/eprint/6184/</dc:relation></oai_dc:dc></ctx:metadata></ctx:metadata-by-val></ctx:referent></ctx:context-object>