Global Earthquake Fatalities and Population

2013 ◽  
Vol 29 (1) ◽  
pp. 155-175 ◽  
Author(s):  
Thomas L. Holzer ◽  
James C. Savage
Keyword(s):  
Population Growth ◽  
20Th Century ◽  
Poisson Distribution ◽  
21St Century ◽  
World Population ◽  
Background Rate ◽  
Death Toll ◽  
World Population Growth ◽  
Human Death ◽  
Earthquake Fatalities

Modern global earthquake fatalities can be separated into two components: (1) fatalities from an approximately constant annual background rate that is independent of world population growth and (2) fatalities caused by earthquakes with large human death tolls, the frequency of which is dependent on world population. Earthquakes with death tolls greater than 100,000 (and 50,000) have increased with world population and obey a nonstationary Poisson distribution with rate proportional to population. We predict that the number of earthquakes with death tolls greater than 100,000 (50,000) will increase in the 21st century to 8.7±3.3 (20.5±4.3) from 4 (7) observed in the 20th century if world population reaches 10.1 billion in 2100. Combining fatalities caused by the background rate with fatalities caused by catastrophic earthquakes ( >100,000 fatalities) indicates global fatalities in the 21st century will be 2.57±0.64 million if the average post-1900 death toll for catastrophic earthquakes (193,000) is assumed.

Demographic factors in attitudes towards population growth and control

1972 ◽  
Vol 4 (1) ◽  
pp. 9-23 ◽  
Author(s):  
Larry D. Barnett
Keyword(s):  
Population Growth ◽  
Family Income ◽  
Household Head ◽  
Demographic Factors ◽  
City Size ◽  
World Population ◽  
Population Limitation ◽  
Business Executive ◽  
World Population Growth ◽  
And Control

Using two Gallup polls, which together contained three questions on the attitudes of adult Americans towards population growth and control, a multivariate analysis was conducted of the relationship to each question of nine demographic factors: age, city size, education, family income, occupation of the household head, race, region, religion and sex. Only education and religion showed an intrinsic relationship with attitudes. Specifically, the extent of endorsement of the view that the world population growth rate is a serious problem, and of the view that population limitation will, at some time, be necessary, increased with education. Among those whose family income was at least $10,000 and those whose house-hold head was a professional or business executive, Protestants were more likely than Catholics to view US and world population growth rates as serious and to consider population limitation necessary.

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