<mods:mods version="3.3" xsi:schemaLocation="http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-3.xsd" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><mods:titleInfo><mods:title>Seabed discrimination data from SeaScan™</mods:title></mods:titleInfo><mods:name type="personal"><mods:namePart type="given">Ian Walkden.</mods:namePart><mods:namePart type="family">Brown</mods:namePart><mods:role><mods:roleTerm type="text">author</mods:roleTerm></mods:role></mods:name><mods:abstract>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;
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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.</mods:abstract><mods:classification authority="lcc">Science (General)</mods:classification><mods:genre>Dataset</mods:genre></mods:mods>