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Field Value

Title

NSW seabed landforms derived from marine lidar data 2022

Abstract

Seabed landform features were classified from the New South Wales statewide marine lidar dataset, acquired in 2018 by Fugro Pty Ltd on behalf of the Department of Planning and Environment (data available for download on SEED, see below). Seabed features were extracted from the marine lidar data and classified into seabed landform classes. Classified landform features include reefs, plains, peaks, scarps, depressions and channels. These landforms capture variation in the shape and structure of reef outcrops along the NSW coastal and nearshore environment. Features were classified using the Seabed Landforms Classification Toolset developed for ArcGIS by the Coastal and Marine Unit, DPE (Linklater et al. 2023) which are publicly available on SEED (https://datasets.seed.nsw.gov.au/dataset/seabed-landforms-classification-toolset) and GitHub (https://github.com/LinklaterM/Seabed-Landforms-Classification-Toolset/).

The statewide dataset is provided as ArcGIS shapefiles divided into 9 segments along the coast. The data covers 4060 km2, extending from the coastline (0 m AHD) to a maximum of 50 m depth, reaching an average depth of 35 m. Data coverage extends a maximum distance of 9 km offshore, with coverage extending on average 3 km offshore.

This dataset provides an understanding of the extent and distribution of submerged reefs along the NSW coast, which contributes fundamental baseline information for managers, users and custodians of the marine environment.

This dataset was funded by the Marine Estate Management Authority and NSW Climate Change Fund through the Coastal Management Funding Package.

Please cite this dataset as: Linklater, M., Morris, B., Kinsela, M., Ingleton, T. and Hanslow, D. (2022), Exploring patterns of reef distribution along the southeast Australian coast using marine lidar data. Manuscript in preparation.

NSW statewide marine lidar data – available for download on SEED: https://datasets.seed.nsw.gov.au/dataset/marine-lidar-topo-bathy-2018

Linklater, M., Morris, B.D. and Hanslow, D.J. (2023), Classification of seabed landforms on continental and island shelves. Frontiers in Marine Science, 10, https://www.frontiersin.org/articles/10.3389/fmars.2023.1258556/full.

Linklater, M., Ingleton, T. C., Kinsela, M. A., Morris, B. D., Allen, K. M., Sutherland, M. D., & Hanslow, D. J. 2019. Techniques for classifying seabed morphology and composition on a subtropical-temperate continental shelf. Geosciences, 9(3), 141.

Resource locator

Data Quality Statement

Name: Data Quality Statement

Protocol: WWW:DOWNLOAD-1.0-http--download

Description:

Data quality statement for NSW seabed landforms derived from marine lidar data 2021

Function: download

Download Package Seabed landforms derived from marine lidar data - 01 - Tweed to Yamba

Name: Download Package Seabed landforms derived from marine lidar data - 01 - Tweed to Yamba

Protocol: WWW:DOWNLOAD-1.0-http--download

Description:

Data (Shapefile)

Function: download

Download Package Seabed landforms derived from marine lidar data - 02 - Yamba to Arakoon

Name: Download Package Seabed landforms derived from marine lidar data - 02 - Yamba to Arakoon

Protocol: WWW:DOWNLOAD-1.0-http--download

Description:

Data (Shapefile)

Function: download

Download Package Seabed landforms derived from marine lidar data - 03 - Arakoon to Forster

Name: Download Package Seabed landforms derived from marine lidar data - 03 - Arakoon to Forster

Protocol: WWW:DOWNLOAD-1.0-http--download

Description:

Data (Shapefile)

Function: download

Download Package Seabed landforms derived from marine lidar data - 04 - Forster to Newcastle

Name: Download Package Seabed landforms derived from marine lidar data - 04 - Forster to Newcastle

Protocol: WWW:DOWNLOAD-1.0-http--download

Description:

Data (Shapefile)

Function: download

Download Package Seabed landforms derived from marine lidar data - 05 - Newcastle to Broken Bay

Name: Download Package Seabed landforms derived from marine lidar data - 05 - Newcastle to Broken Bay

Protocol: WWW:DOWNLOAD-1.0-http--download

Description:

Data (Shapefile)

Function: download

Download Seabed landforms derived from marine lidar data - 06 - Broken Bay to Cronulla

Name: Download Seabed landforms derived from marine lidar data - 06 - Broken Bay to Cronulla

Protocol: WWW:DOWNLOAD-1.0-http--download

Description:

Data (Shapefile)

Function: download

Download Package Seabed landforms derived from marine lidar data - 07 - Cronulla to Jervis Bay

Name: Download Package Seabed landforms derived from marine lidar data - 07 - Cronulla to Jervis Bay

Protocol: WWW:DOWNLOAD-1.0-http--download

Description:

Data (Shapefile)

Function: download

Download Package Seabed landforms derived from marine lidar data - 08 - Jervis Bay to Batemans Bay

Name: Download Package Seabed landforms derived from marine lidar data - 08 - Jervis Bay to Batemans Bay

Protocol: WWW:DOWNLOAD-1.0-http--download

Description:

Data (Shapefile)

Function: download

Download Package Seabed landforms derived from marine lidar data - 09 - Batemans Bay to Cape Howe

Name: Download Package Seabed landforms derived from marine lidar data - 09 - Batemans Bay to Cape Howe

Protocol: WWW:DOWNLOAD-1.0-http--download

Description:

Data (Shapefile)

Function: download

Storymap for seabed landforms

Name: Storymap for seabed landforms

Protocol: WWW:DOWNLOAD-1.0-http--download

Description:

ArcGIS Storymap for NSW seabed landforms derived from marine lidar data 2022

Function: download

Mapservice - NSW seabed landforms derived from marine lidar data 2022

Name: Mapservice - NSW seabed landforms derived from marine lidar data 2022

Protocol: WWW:DOWNLOAD-1.0-http--download

Description:

ESRI REST Mapservice for NSW seabed landforms derived from marine lidar data 2022

Function: download

Unique resource identifier

Code

3f00d173-aa85-4e58-8dda-97948d772700

Presentation form

Map digital

Edition

1

Dataset language

English

Metadata standard

Name

ISO 19115

Edition

2016

Dataset URI

https://datasets.seed.nsw.gov.au/dataset/3f00d173-aa85-4e58-8dda-97948d772700

Purpose

To support coastal and marine research, planning and management

Status

Completed

Spatial representation

Type

vector

Spatial reference system

Code identifying the spatial reference system

4283

Spatial resolution

5 m

Classification of spatial data and services

Field Value

Topic category

Keywords

Field Value

Keyword set

keyword value

MARINE-Coasts

MARINE

MARINE-Reefs

PHOTOGRAPHY-AND-IMAGERY-Remote-Sensing

GEOSCIENCES-Geomorphology

WATER

ECOLOGY-Habitat

ECOLOGY-Landscape

Originating controlled vocabulary

Title

ANZLIC Search Words

Reference date

2008-05-16

Geographic location

West bounding longitude

150.17

East bounding longitude

153.73

North bounding latitude

-37.55

South bounding latitude

-28.13

Vertical extent information

Minimum value

-100

Maximum value

2228

Coordinate reference system

Authority code

urn:ogc:def:cs:EPSG::

Code identifying the coordinate reference system

5711

Temporal extent

Begin position

2018-07-01

End position

N/A

Dataset reference date

Resource maintenance

Maintenance and update frequency

Not planned

Contact info

Contact position

Data Broker

Organisation name

NSW Department of Climate Change, Energy, the Environment and Water

Telephone number

131555

Email address

data.broker@environment.nsw.gov.au

Web address

https://www.nsw.gov.au/departments-and-agencies/dcceew

Responsible party role

pointOfContact

Quality and validity

Field Value

Lineage

Statewide marine lidar data was collected along the NSW coast in 2018, with elevation data collected down to an average of 35 m depth. This dataset represents a classification of seabed landforms derived from this marine lidar data, which delineates the prominent seabed features observed. This classification defines areas of reefs, peaks (uppermost part of the reef surface), plains, depressions and channels (within the reef surface), and scarps (areas greater than 10 degrees slope). The statewide dataset is provided as ArcGIS shapefiles divided into 9 segments along the coast, covering 4060 km2 of NSW coastal waters. Features were classified using the Seabed Landforms Classification Toolset (ArcGIS), developed by DPE (Linklater & Morris, 2022) which applies the methodological framework presented in Linklater et al. (2019). In this classification approach, ruggedness (VRM, Walbridge et al. 2018), slope, finescale and broadscale Bathymetric Position Index (Slope Position, Evans et al. 2014) variables were derived from the marine lidar bathymetric dataset and used to characterise prominent features within the seascape. Procedures were implemented to reduce potential noise within the dataset and identify the full extent of reef outcrops. Manual editing was performed to separate inferred reef outcrops from soft sediment bedforms, with the resulting classification focused on identifying the presence, extent and character of submerged reef outcrops within the marine lidar dataset. The classification output was reviewed and edited by the data creator to capture observed and interpreted seabed features. The resulting layer was externally reviewed to ensure scientific rigour and data integrity.

Please cite this dataset as: Linklater, M., Morris, B., Kinsela, M., Ingleton, T. and Hanslow, D. (2022), Exploring patterns of reef distribution along the southeast Australian coast using marine lidar data. Manuscript in preparation.

NSW statewide marine lidar data – available for download on SEED: https://datasets.seed.nsw.gov.au/dataset/marine-lidar-topo-bathy-2018

Linklater, M. and Morris, B. (2022), Classification of seabed landforms on continental and island shelves. Manuscript in preparation.

Linklater, M., Ingleton, T. C., Kinsela, M. A., Morris, B. D., Allen, K. M., Sutherland, M. D., & Hanslow, D. J. 2019. Techniques for classifying seabed morphology and composition on a subtropical-temperate continental shelf. Geosciences, 9(3), 141.

Walbridge, S., Slocum, N., Pobuda, M., Wright, D.J., 2018. Unified geomorphological analysis workflows with Benthic Terrain Modeler. Geosciences, 8(3), 94.

Evans, J., Oakleaf, J., Cushman, S., 2014. An ArcGIS Toolbox for Surface Gradient and Geomorphometric Modeling, Version 2.0-0. Available online: https://github.com/jeffreyevans/GradientMetrics.

Constraints related to access and use

Field Value

Limitations on public access

Data Quality

Field Value

Scope

dataset

DQ Topological Consistency

Explanation

ArcInfo was used to do a topological consistency check to detect flaws in the spatial data structure. No polygon overlaps were detected.

DQ Absolute External Positional Accuracy

Explanation

This dataset represents seabed features classified from 5 m cell size input bathymetry data, with no ground-truthing undertaken. Polygons smaller than 100 m2 were eliminayed. Due to the variability in sediment movement, precise feature boundaries can be variable over time.

Responsible organisations

Field Value

Responsible party

Contact position

Data Broker

Organisation name

NSW Department of Climate Change, Energy, the Environment and Water

Telephone number

131555

Email address

data.broker@environment.nsw.gov.au

Web address

https://www.nsw.gov.au/departments-and-agencies/dcceew

Responsible party role

pointOfContact

Metadata on metadata

Field Value

Metadata point of contact

Contact position

Data Broker

Organisation name

NSW Department of Climate Change, Energy, the Environment and Water

Telephone number

131555

Email address

data.broker@environment.nsw.gov.au

Web address

https://www.nsw.gov.au/departments-and-agencies/dcceew

Responsible party role

pointOfContact

Metadata date

2024-02-26T13:30:48.700762

Metadata language