title: Using undrained cyclic triaxial tests to examine liquefaction resistance of historically liquefied pumiceous volcanic-ash soil materials and back-estimate prehistoric earthquakes.

authors: Chaneva, Jordanka

subjects: Hamilton Basin faults

abstract: Back-analysis of ground motion characteristics, such as earthquake magnitude and peak ground accelerations, in paleoliquefaction studies are most commonly based on empirical CPT- and/or SPT-based correlations that estimate the liquefaction resistance of soil materials of relevance. Laboratory triaxial cyclic tests have not been explored for this purpose to date. Our study investigates the liquefaction resistance of three different beds (with differing grain-size distributions and pumice content) of a single rhyolitic (high-silica) volcanic-ash layer, referred to as Mamaku tephra, that was deposited ~8000 calendar years ago and preserved in lake sediments in multiple extant lakes in the Hamilton lowlands, North Island, New Zealand. 

Paleoliquefaction features observed in the silty and sandy beds of the Mamaku tephra indicate seismic activity in the past. With our main aim being to back-analyse potential prehistoric earthquakes that might have caused the paleoliquefaction features in Mamaku tephra (and other lacustrine tephras), the following steps were taken: 
(1) the liquefaction resistance of the three Mamaku tephra beds with different grain sizes and pumice contents from one site (Lake Areare, northern Hamilton lowlands) was investigated using undrained cyclic triaxial testing;
(2) a framework extending the laboratory liquefaction resistance results of the tested Mamaku beds at Lake Areare to other Mamaku tephra deposits in the lake sediments across the lowlands was proposed; and 
(3) the equivalent peak ground acceleration and earthquake magnitude that would have caused liquefaction of all the lacustrine Mamaku tephra deposits across the lowlands (in 13 lakes) were estimated using available empirical correlation methods. A discussion about the limitations of the proposed framework alongside the qualitative implications on the results is also provided. It was found that the Mamaku tephra deposits are very vulnerable to liquefaction and require very low triggering peak ground acceleration to liquefy, i.e., amax in the range between 0.02 and 0.08 g through the range of magnitudes, M = 5–8.5.

text: Using undrained cyclic triaxial tests to examine liquefaction resistance of historically liquefied pumiceous volcanic-ash soil materials and back-estimate prehistoric earthquakes. Back-analysis of ground motion characteristics, such as earthquake magnitude and peak ground accelerations, in paleoliquefaction studies are most commonly based on empirical CPT- and/or SPT-based correlations that estimate the liquefaction resistance of soil materials of relevance. Laboratory triaxial cyclic tests have not been explored for this purpose to date. Our study investigates the liquefaction resistance of three different beds (with differing grain-size distributions and pumice content) of a single rhyolitic (high-silica) volcanic-ash layer, referred to as Mamaku tephra, that was deposited ~8000 calendar years ago and preserved in lake sediments in multiple extant lakes in the Hamilton lowlands, North Island, New Zealand. 

Paleoliquefaction features observed in the silty and sandy beds of the Mamaku tephra indicate seismic activity in the past. With our main aim being to back-analyse potential prehistoric earthquakes that might have caused the paleoliquefaction features in Mamaku tephra (and other lacustrine tephras), the following steps were taken: 
(1) the liquefaction resistance of the three Mamaku tephra beds with different grain sizes and pumice contents from one site (Lake Areare, northern Hamilton lowlands) was investigated using undrained cyclic triaxial testing;
(2) a framework extending the laboratory liquefaction resistance results of the tested Mamaku beds at Lake Areare to other Mamaku tephra deposits in the lake sediments across the lowlands was proposed; and 
(3) the equivalent peak ground acceleration and earthquake magnitude that would have caused liquefaction of all the lacustrine Mamaku tephra deposits across the lowlands (in 13 lakes) were estimated using available empirical correlation methods. A discussion about the limitations of the proposed framework alongside the qualitative implications on the results is also provided. It was found that the Mamaku tephra deposits are very vulnerable to liquefaction and require very low triggering peak ground acceleration to liquefy, i.e., amax in the range between 0.02 and 0.08 g through the range of magnitudes, M = 5–8.5.

year: 2025

title: Don't miss the well-being train: a radical ‎proposal for revolution in positive ‎psychology

authors: Weijers, Dan M.

abstract: Positive psychologists have added a great deal of knowledge about positive mental states and behaviors, especially over the last 20 years. As evidence is produced in support of the connections between positive psychological constructs, the model of mental flourishing is slowly being filled in. But, just like the broader well-being research and policy community (Lee et al., 2021), the discipline remains divided about how to conceptualize and measure well-being (Hone et al., 2014; Ackerman et al., 2018). This lack of unity makes it difficult to establish how measures of positive mental functioning connect with the bigger picture of the good life for the one living it, and deter its use in broader research and policy agendas. For example, the influential World Happiness Report 2020 (Helliwell et al., 2020) is edited by only economists and contains the phrase Positive Psychology just once.

text: Don't miss the well-being train: a radical ‎proposal for revolution in positive ‎psychology Positive psychologists have added a great deal of knowledge about positive mental states and behaviors, especially over the last 20 years. As evidence is produced in support of the connections between positive psychological constructs, the model of mental flourishing is slowly being filled in. But, just like the broader well-being research and policy community (Lee et al., 2021), the discipline remains divided about how to conceptualize and measure well-being (Hone et al., 2014; Ackerman et al., 2018). This lack of unity makes it difficult to establish how measures of positive mental functioning connect with the bigger picture of the good life for the one living it, and deter its use in broader research and policy agendas. For example, the influential World Happiness Report 2020 (Helliwell et al., 2020) is edited by only economists and contains the phrase Positive Psychology just once.

year: 2021

title: Experiencing cultural tourism: Visitors at the Maori Arts and Crafts Institute, New Zealand

authors: Ryan, Chris

subjects: indigenous tourism

abstract: This study reports results derived from semistructured interviews with 40 visitors to the Maori Arts and Crafts Institute in Rotorua, New Zealand. The article discusses briefly the mode of data capture used and adopts an approach of identifying classifications of a primarily functional nature to list reasons why people visit such a site and what it is they seek. In general, visitors reported high levels of satisfaction, yet the cultural component of their experience was primarily reported in terms of the visit being informative and entertaining. Additionally, whereas modest levels of interest in things Maori seemed to motivate visits to other Maori sites, the actual list of other locations being nominated was few in number. The impression results that visits are made to Maori sites because this is a "done thing" when visiting New Zealand, but overall, the level of interest shown by most visitors in indigenous culture is modest.

text: Experiencing cultural tourism: Visitors at the Maori Arts and Crafts Institute, New Zealand This study reports results derived from semistructured interviews with 40 visitors to the Maori Arts and Crafts Institute in Rotorua, New Zealand. The article discusses briefly the mode of data capture used and adopts an approach of identifying classifications of a primarily functional nature to list reasons why people visit such a site and what it is they seek. In general, visitors reported high levels of satisfaction, yet the cultural component of their experience was primarily reported in terms of the visit being informative and entertaining. Additionally, whereas modest levels of interest in things Maori seemed to motivate visits to other Maori sites, the actual list of other locations being nominated was few in number. The impression results that visits are made to Maori sites because this is a "done thing" when visiting New Zealand, but overall, the level of interest shown by most visitors in indigenous culture is modest.

year: 2006