scholarly journals Elsewhere in Australia: a snapshot of temporary mobility on the night of the 2016 Census

2018 ◽  
Vol 2 (1) ◽  
pp. 14-25 ◽  
Author(s):  
Elin Charles-Edwards ◽  
Radoslaw Panczak

Background  Temporary population mobility, moves of more than one night’s duration that do not entail a change in usual residence, are an important feature of the Australian population surface. The ABS Census of Population and Housing (Census) provides a snapshot of temporary movements one night every five years. Aims  This paper examines the intensity, age and spatial patterns of temporary movements captured at the 2016 Census, and creates a classification of regions based on the age profile of movers on Census nights. Data and methods  2016 Census data were extracted using ABS TableBuilder Pro. Summary metrics were calculated to measure the intensity and age profile of movements. Origin–destination flows were derived from a cross-classification of data on Place of Usual Residence and Place of Enumeration. A classification of regions (SA4s) was constructed from the age profile of movers at origins and at destinations. Results  1,142,005 individuals (about 5 per cent of the Australian population) were enumerated away from home on Census night 2016. Mobility peaked in younger (20–30) and older (65–70) age groups. Most movements were between capital city regions; however, resource regions and coastal areas were also implicated. The mobility surface was segmented by age: younger people dominated visits to cities and older movers comprise the majority of visitors to coastal areas, while remote areas had a significant proportion of visitors in the peak working ages. Conclusions  Temporary population mobility is selective by age and sex and geographically segmented by these characteristics. Improved understanding of the attribute of visitors to regions can assist to formulate and validate estimates of temporary populations from emerging data sets.

1982 ◽  
Vol 14 (1) ◽  
pp. 7-16 ◽  
Author(s):  
M. A. Khalifa

SummaryIn a survey of 1475 urban Moslem wives in the age group 15–49 living in the capital city of the Sudan, knowledge of birth control was reported by almost all respondents while a significant proportion had used contraception at least once. The mean age of the users was 32·8 years, their duration of marriage was 15·1 years and their mean number of surviving children was 4·6. Those who had never used contraception had a higher mean age, a longer duration of marriage and more surviving children. Most of the users had an urban residential background and belonged to the high socioeconomic class. They held favourable attitudes to family planning. Although they thought that having a large family (more than five children) was not desirable, their mean preferred family size was no different from that of the never users.The results indicate that contraception is used for the purpose of spacing births rather than limiting their ultimate number. At this early stage of contraceptive adoption in Sudan, the characteristics of the pioneer acceptors are similar to those observed in other African countries.


2014 ◽  
Vol 7 (7) ◽  
pp. 2061-2072 ◽  
Author(s):  
T. Kanitz ◽  
A. Ansmann ◽  
A. Foth ◽  
P. Seifert ◽  
U. Wandinger ◽  
...  

Abstract. In the CALIPSO data analysis, surface type (land/ocean) is used to augment the aerosol characterization. However, this surface-dependent aerosol typing prohibits a correct classification of marine aerosol over land that is advected from ocean to land. This might result in a systematic overestimation of the particle extinction coefficient and of the aerosol optical thickness (AOT) of up to a factor of 3.5 over land in coastal areas. We present a long-term comparison of CALIPSO and ground-based lidar observations of the aerosol conditions in the coastal environment of southern South America (Punta Arenas, Chile, 53° S), performed in December 2009–April 2010. Punta Arenas is almost entirely influenced by marine particles throughout the year, indicated by a rather low AOT of 0.02–0.04. However, we found an unexpectedly high fraction of continental aerosol in the aerosol types inferred by means of CALIOP observations and, correspondingly, too high values of particle extinction. Similar features of the CALIOP data analysis are presented for four other coastal areas around the world. Since CALIOP data serve as important input for global climate models, the influence of this systematic error was estimated by means of simplified radiative-transfer calculations.


2017 ◽  
Vol 50 (3) ◽  
pp. 1721
Author(s):  
A. Mavromatidi ◽  
E. Karymbalis

Tourism development in Greece has led to increasing pressure on coastal areas, which makes the study of sensitive coastal areas essential, in order to find appropriate solutions for their shielding. The aim of this study is an estimation of the effects of an anticipated sea level rise for the touristically developed part of Pieria Prefecture, which includes the settlements Paralia, Skala of Katerini, Olympic Beach, Korinos Beach and extends north to the area of the Kitrous saltworks and south to the mouth of Mavroneri river. Therefore the Coastal Vulnerability Index (CVI) is applied, in an attempt to determine the susceptible parts to the potential sea level rise. CVI depends on the following parameters: (a) coastal geomorphology, (b) coastal slope, (c) shoreline erosion/accretion rate, (d) relative sea-level rise fluctuations, (e) mean tidal range and (f) mean significant wave height. The classification of the coast, which is of particular socio-economic significance since it hosts urbanized areas, into five CVI classes (from very low vulnerability to very high vulnerability), showed that 43.6% of the entire coastline is of very high vulnerability. 


Author(s):  
José A. Juanes ◽  
Araceli Puente ◽  
Elvira Ramos

Ecological classification of coastal waters has become increasingly important as one of the basic issues in the biology of conservation. Management and protection of coastal areas take place at different spatial scales. Thus, proper classification schemes should integrate equivalent information at various levels of definition in order to show its feasibility as a useful tool for assessment of coastal environments at the required scales. In this work, a global approach applied to the classification of the NE Atlantic coast is analysed in order to discuss pros and cons regarding different conceptual and technical issues for effective implementation of such a management tool. Using the hierarchical system applied at three different geographic scales: Biogeographic (NE Atlantic coast), Regional (Bay of Biscay) and Local (Cantabria region), five different topics were considered for debating strengths and weaknesses of the methodological alternatives at those spatial scales, using for validation the rocky shore macroalgae as a representative biological element of benthic communities. These included: (i) the spatial scales; (ii) the physical variables and indicators; (iii) the classification methodologies; (iv) the biological information; and (v) the validation procedure. Based on that analysis, the hierarchical support system summarized in this paper provides a management framework for classification of coastal systems at the most appropriate resolution, applicable to a wide range of coastal areas. Further applications of the physical classification for management of biodiversity in different environmental scenarios are also analysed.


2017 ◽  
Vol 60 ◽  
pp. 3-10 ◽  
Author(s):  
Lei Bi ◽  
Jinman Kim ◽  
Ashnil Kumar ◽  
Lingfeng Wen ◽  
Dagan Feng ◽  
...  

2016 ◽  
Vol 70 ◽  
pp. 212-221 ◽  
Author(s):  
Jose M. Adam ◽  
Jose D. Moreno ◽  
Mercedes Bonilla ◽  
Teresa M. Pellicer
Keyword(s):  

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