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Seabed discrimination data from SeaScan™

Brown, Ian Walkden. Seabed discrimination data from SeaScan™. Department of Agriculture, Fisheries and Forestry, Qld. [Dataset]

[img] Plain Text (SeaScan data 31 Aug 2007 Wide Bay)
Available under License GILF Attribution.

2MB

Organisation URL: http://www.frdc.com.au

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:

1. record number
2. date-time (GMT)
3. date-time (AEST)
4. latitude (signed decimal degrees)
5. longitude (decimal degrees)
6. speed over ground (knots)
7. depth (m)
8. seabed roughness (v)
9. hardness (v)

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.

Item Type:Dataset
Type of Data:Numerical
Copyright Holders:© The State of Queensland, Department of Agriculture, Fisheries and Forestry, Qld
Coverage:
NorthWestSouthEast
-25.5153.3-25.8153.5
Funders:Fisheries Research and Development Corporation
Corporate Creators:Department of Agriculture, Fisheries and Forestry, Qld
Projects:FRDC Project 2003/046 Reducing uncertainty in the assessment of the Australian spanner crab fishery. Project Report PR07-3314, Ch. 3: Local-scale ecological effects: temperature, habitat type and wave action (pp 64-84).
Business groups:Agri-Science
Additional Information:By downloading this dataset you agree to the terms and conditions of the attached licence.
Keywords:Seabed discrimination; SeaScan; spanner crab; habitat.
Subjects:Science > Science (General)
Deposited On:05 Aug 2010 23:38
Last Modified:21 Nov 2016 03:23

ANDS Handle: http://hdl.handle.net/10378.3/10202

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