Secondary Coastal Sediment Compartments  

Authors / CoAuthors

McPherson, A. | Hazelwood, M. | Moore, D. | Owen, K. | Nicoll, S.

Abstract

The Secondary Coastal Sediment Compartment data set represents a sub-regional-scale (1:100 000 - 1:25 000) compartmentalisation of the Australian coastal zone into spatial units within (and between) which sediment movement processes are considered to be significant at scales relevant to coastal management. The Primary and accompanying Secondary Coastal Sediment Compartment data sets were created by a panel of coastal science experts who developed a series of broader scale data sets (Coastal Realms, Regions and Divisions) in order to hierarchically subdivide the coastal zone on the basis of key environmental attributes. Once the regional (1:250 000) scale was reached expert knowledge of coastal geomorphology and processes was used to further refine the sub-division and create both the Primary and Secondary Sediment Compartment data sets. Environmental factors determining the occurrence and extents of these compartments include major geological structures, major geomorphic process boundaries, orientation of the coastline and recurring patterns of landform and geology - these attributes are given in priority order below. 1 - Gross lithological/geological changes (e.g. transition from sedimentary to igneous rocks). 2 - Geomorphic (topographic) features characterising a compartment boundary (often bedrock-controlled) (e.g. peninsulas, headlands, cliffs). 3 - Dominant landform types (e.g. large cuspate foreland, tombolos and extensive sandy beaches versus headland-bound pocket beaches). 4 - Changes in the orientation (aspect) of the shoreline.

Product Type

dataset

eCat Id

87818

Contact for the resource

Keywords

• GIS DatasetNational

( Theme )

• Geosciences

( Theme )

• boundaries

( Theme )

• environmental

• National

Australian and New Zealand Standard Research Classification (ANZSRC)

• Surface Processes

• Published_Internal

Publication Date

2015-01-01T00:00:00

Creation Date

Security Constraints

Australian Government Security ClassificationSystem    

Classification - unclassified

Legal Constraints

Creative Commons Attribution 4.0 International Licence    

Access - license

Use - license

Status

Purpose

Maintenance Information

asNeeded

Topic Category

geoscientificInformation

Series Information

Lineage

Following the technical workshop hosted by Geoscience Australia in Canberra from 16-18 October 2012 the points dataset was reviewed internally at Geoscience Australia and sent out to the workshop attendees for review of the location of the points and the attribution detailing the reasoning for the break between compartments. This review was completed for each of the states by two of the workshop attendees to ensure a higher level of consistency across the dataset. Following the review the data received back from the workshop attendees was: - merged back into a national dataset - checked with regard to consistency of attribution of name and physical location of the point against Geoscience Australia's Gazetteer product (Gazetteer of Australia 2012 Release). Some points were moved to be more consistent with the Gazetteer.

Parent Information

Extents

[-45.0, -9.0, 111.0, 155.0]

Reference System

GDA94 (EPSG:4283)

Spatial Resolution

Service Information

Associations

Downloads and Links

Source Information

This data was created during and following the technical workshop hosted by Geoscience Australia in Canberra from 16-18 October 2012. This workshop brought together the team of Australian coastal science experts listed below. ¿ Prof. Bruce Thom ¿ University of Sydney and the Wentworth Group ¿ Prof. Andy Short ¿ University of Sydney ¿ Prof. Colin Woodroffe ¿ University of Wollongong ¿ Dr. Ian Eliot ¿ University of Western Australia ¿ Mr. Chris Sharples ¿ University of Tasmania ¿ Dr. Brendan Brooke ¿ Geoscience Australia ¿ Dr. Scott Nichol ¿ Geoscience Australia The technical workshop had the goal of creating regional (primary) and sub-regional (secondary) scale coastal sediment compartment break points and capturing attribute information relevant to each compartment. Following the development of this points dataset, breaklines, to define sediment flow separation between the compartments, were created that passed through the points and connected the landward and seaward boundaries of the Primary Compartments.