Abstract

This resource contains an analysis of seabed hardness using multibeam sonar backscatter data for the continental shelf area of Flinders Commonwealth Marine Reserve, northeast Tasmania. Multibeam data were collected by Geoscience Australia and University of Tasmania in June-July 2012 (survey GA0337) on RV Challenger using a Kongsberg EM3002 300 kHz multibeam sonar system mounted in single head configuration. Multibeam data (bathymetry and backscatter) were acquired at 40 pre-determined stations, each covering an area approximately 200 x 200 m. The location of stations was selected using a Generalised Random Tessellation Stratified (GRTS) sampling design that ensured an even spatial distribution of sites. Multibeam data were also collected along transits between GRTS stations (410 line km) and across a 30 km2 area of the outer shelf. Backscatter data are gridded to 2 m spatial resolution. The analysis of backscatter data includes an estimation of the probability of seabed hardness (p-hard) using the Angular Response Curve. The Flinders CMR survey was a pilot study undertaken in 2012 as part of the National Marine Biodiversity Hub's National Monitoring Evaluation and Reporting Theme. The aim of this theme is to develop a blueprint for the sustained monitoring of the South-east Commonwealth Marine Reserve Network. The Marine Biodiversity Hub is supported through funding from the Australian Government's National Environmental Research Program (NERP), administered by the Department of the Environment.
Google map showing geographic bounding box with values North bound -40.4 East bound 148.85 West bound 148.55 South bound -40.85

Product Type/Sub Type

dataset

Constraints

Creative Commons Attribution 4.0 International Licence

IP Owner

Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication)

2014-01-01T00:00:00

Product Type

dataset

Topic Category

geoscientificInformation

GA Catalogue Number

79564 Product http://www.ga.gov.au/metadata-gateway/metadata/record/79564/

Keywords

Marine Data
backscatter
continental shelf
habitat
NERP Marine Biodiversity Hub
marine
NERP
Marine Geoscience

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-40.4
East bound
148.85
West bound
148.55
South bound
-40.85

Digital Transfer Options

onLine

Distributor

Role
distributor
Organisation Name
Commonwealth of Australia (Geoscience Australia)
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address

Metadata File Identifier

f7c38ecc-8fee-70c9-e044-00144fdd4fa6

Metadata Standard Name

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Metadata Standard Version

1.1

METADATA SECURITY CLASSIFICATION

unclassified

Metadata Contact

Role
pointOfContact
Organisation Name
Commonwealth of Australia (Geoscience Australia)
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address