Modeling source parameters of quasi-periodic tremor

Modeling harmonic tremor recorded at volcanoes is an essential practice in improving eruption forecasting methods and warning systems. We model the conduit dynamics of quasi-periodic tremor (chugging) recorded at Karymsky, Tungurahua, and Fuego volcanoes to estimate its source characteristics. Chugging mechanisms are estimated using two theoretical models originally derived in Garcés [1997, doi: https://doi.org/10.1029/1999JB900096] and Girona et al. [2019, doi: https://doi.org/10.1029/2019JB017482], respectively. Comparisons of the conduit and fluid output parameters suggests that chugging is primarily limited to near-surface oscillations and outgassing due to an accumulation of gas between eruptive episodes. The modeled results indicate clustered release of volatiles exsolved from a deeper magma conduit region, triggered by an initial explosion. This interpretation is consistent with both infrasonic and seismic observations at each volcano

Introduction: Aging in Asia - Perennial concerns on support and caring for the old

10.1007/s10823-006-9005-3Journal of Cross-Cultural Gerontology204257-26

Representing Dementia and Care in Post-war Japan: The Twilight Years, Memories of Tomorrow and Pecoross’ Mother and Her Days

As the number of people affected by dementia increases rapidly, dementia has been transformed into an epidemic which endangers global health and wealth, and many populations are now living in what Jain terms a time of prognosis, in fear of the disease. Through its strong association with ageing and memory loss, dementia is conceived of as a linear decline into loss of self and death, and those with dementia as other. More significantly, imagined as a threat that signifies both a loss of able-bodied workforce and a large population dependent on care and support, dementia inevitably feeds into the ‘crisis-of-care’ narrative that is prominent in many ageing societies. With one of the fastest ageing populations in the world, and an extremely low birth rate, the dementia prognosis is particularly acute in Japan and dementia is strongly linked to the idea of a ‘care crisis’. This situation has produced an increasing number of cultural representations of dementia and care and this paper considers three of these cultural texts, all rooted in the historical and cultural contexts in which they were produced: the novel The Twilight Years; the film Memories of Tomorrow; and the comic book Pecoross’ Mother and Her Days. The analysis concentrates upon their representations of care, seeing this as a space where the ethical relationship between self and other can be negotiated and where time with dementia can be imagined and re-imagined. The analysis of these texts from a feminist ethics perspective demonstrates the potential of popular and creative representations to interrogate and potentially expand the meanings of dementia, ageing and living in prognosis

Return and the Social Environment of Andalusian Emigrants in Europe

This paper analyses the return of Andalusian emigrants from Northern European countries to their regions of origin. The aim is to discover the reasons that led to the original emigrations and those that, after several decades and when in or approaching old age, motivated the returns. The factors and relationships involved in migrants’ decision-making are discussed at the family and social network levels, and interpreted through the notion of a ‘life project’. This reveals that the decisions and plans to return were to an extent linked to the original emigration decision and grounded in individual and family behaviour. The material and socio-demographic contexts of the original emigration from rural Andalusia (economic hardship, high fertility and large families, and family households as units of production) facilitated selective emigration, with many of the emigrants having characteristics of social exclusion. At the destinations, the migrants developed a distinctive social structure, based on work and family relationships, which enabled integration and the forging of ties with the host society. When the emigrants reached the end of their working lives, many of the same personal and social factors reappeared and conditioned the decision-making process to return.Peer reviewe