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Population Flow Data Paper

Decent Essays

The datasets used in this paper have been obtained from different sources. A description of the variables used in the analysis is explained in the following sections. 2.1 Population flow data The regional internal net population flow data from 2006 to 2014 financial years (FY) at the SA2 has been distributed by the Australian Bureau of Statistics (ABS). The SA2s in Australia are general-purpose medium-sized areas, aiming to represent a community that interacts together socially and economically. For example, population of the SA2 area usually ranges from 3,000 to 25,000 persons, and have an average about 10,000 persons . We use information from a total of 102 SA2s at the MDB area of the New South Wales (NSW) state (see S3). Considering …show more content…

This is possibly due to a number of droughts occurring during this time period, we will explore the issue further in this paper. Potter, Chiew, and Frost (2010) reported that the average annual rainfall for the period 1997 to 2006 was approximately 16% lower than of the long-term average. Runoff has been 39% lower over the same period. In addition, there was a consecutive severe drought period in Australia during the 2000s, known as the Millennium drought. We also observe that the net population flow decreases from about 73% of the SA2s during the 2006-2014 period (S4). 2.2 Socio-economic data Employment is often a key indicator for the population movement. Hence, in this paper, we use unemployment rate (%) as a factor in the model. The quarterly unemployment rate data is obtained from SLA Markets publications by the Department of Employment, Australian Government. To minimise the variability inherent in small area estimates, the Department provides smoothed data, i.e., a four-quarter average, at the SA2s from 2010. Before 2010 data are only available at the SLA . The SLA has a spatial misalignment with the SA2, and to overcome this issue we use the complex dynamic spatial modelling technique (Bakar, Kokic, & Jin, 2015) and estimate the quarterly unemployment rate from 2006 to 2009 at the SA2 level. Details of the modelling approach is provided in the supplementary section. To match the yearly

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