Coastal Realms  

Authors / CoAuthors

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

Abstract

The Realms data set was created as one of three broad-scale data layers to facilitate the definition of Primary and Secondary compartments. The Realms data is provided so that the logic of the compartment creation can be understood. With regards to spatial scale, the Realms data set represents the smallest scale product, as shown in the hierarchical listing for all of the polygon data sets shown below: - Coastal Realms (1:5 000 000) - Coastal Regions (1:1 000 000) - Coastal Divisions (1:250 000) - Primary Compartments (1:250 000 - 1:100 000) - Secondary Compartments (1:100 000 - 1:25 000)

Product Type

dataset

eCat Id

87801

Contact for the resource

Keywords

• GIS DatasetNational

( Theme )

• boundaries

( Theme )

• environmental

( Theme )

• Geosciences

• 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

The method to create the polygon extents was not recorded but from review is not clearly derived from a digital elevation model or from buffering the coastline. It is believed the extents were digitised on-screen by hand with no further review of the extents, e.g. not clipped back to within Australia's Exclusive Economic Zone (EEZ). Below is a modified extract from the report: 'The Australian Coastal Sediment Compartments Project: Methodology and Product Development' published by Geoscience Australia in 2015. The extract describes how the broad-scale regions were agreed upon. At a workshop hosted by the Commonwealth Department of Climate Change and Energy Efficiency (DCCEE) in Canberra on 17 February 2011 an initial broad-scale compartmentalisation of the Australian coast was developed (Ian Eliot, pers. comm. 2011). This compartmentalisation was subsequently re-visited and progressed during a technical workshop hosted by Geoscience Australia in Canberra from 16-18 October 2012, which 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 compartments and generating and capturing relevant attribute information relevant to each compartment. The initial step in achieving this involved sub-dividing the Australian coastal zone into a hierarchical set of broad-scale spatial units defined using a number of scale-dependent environmental criteria (Table 1). Table 1. Criteria used to establish compartment boundary points on the coastline. Dataset Criteria Scale Coastal Realms Climatic processes: tropical versus temperate Oceanic processes: wave- versus tide-dominated 1:5 000 000 Coastal Regions Major geological divisions Major met-ocean processes Orientation of the coastline 1:1 000 000 Coastal Divisions Major geological structures Major process boundaries Orientation of the coastline Areas with recurring patterns of landform and geology 1:250 000 This initial process was followed by further sub-division of the Australian coastal zone into regional (primary) and sub-regional (secondary) scale compartments. These spatial units provide a framework within which sediment movement and other geomorphic processes can be considered or assessed at a range of management scales and timeframes

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

See the Lineage field