title: Site characterisation of the Hamilton Basin using surface wave methods

authors: Cave, Ashley

abstract: Observed amplification and reverberation of ground motions in the Heathcote Valley during the 2010-2011 Canterbury Earthquake Sequence highlighted the lack of data on the subsurface velocity structure of sedimentary basins across New Zealand. A similar lack of data applies to the Hamilton Basin, a deep, predominantly alluvial, basin in the Waikato Region. In response, 13 deep shear wave velocity profiles have been measured in this study. Dispersion data obtained through active and passive methods were inverted with fundamental frequencies deduced from the horizontal-to-vertical spectral ratio method and a suite of layering ratios in the absence of detailed geological information. Potential for amplification is inferred from the large impedance contrasts at the soil-basement interface in the developed Vₛ profiles. The fundamental site period is over 5s in the Te Rapa and Gordonton depressions in the northern basin, where basement rock is up to 1400m deep. As basement shallows towards the south, fundamental periods shorten. Complex wave propagation occurs towards the southeastern basin influenced by ignimbrite deposition interspersed within the alluvial sediments of the Tauranga Group. Despite the variation in basement structure, velocities associated with lithology changes tend to be relatively consistent, allowing for the use of a four-unit velocity structure to represent basin deposits. The peat bogs which dominate the surficial landscape have significantly low shear wave velocities (28-38m/s), which presented unique difficulties in near surface velocity resolution. The soft near surface soil deposits across the basin have Vₛ₃₀ values ranging from 166-234m/s and four class E sites have been identified. Based on the new Vₛ profiles, a refined fundamental frequency-depth correlation was developed for the region. The results in this thesis are intended to inform site response analysis and seismic risk assessment.

text: Site characterisation of the Hamilton Basin using surface wave methods Observed amplification and reverberation of ground motions in the Heathcote Valley during the 2010-2011 Canterbury Earthquake Sequence highlighted the lack of data on the subsurface velocity structure of sedimentary basins across New Zealand. A similar lack of data applies to the Hamilton Basin, a deep, predominantly alluvial, basin in the Waikato Region. In response, 13 deep shear wave velocity profiles have been measured in this study. Dispersion data obtained through active and passive methods were inverted with fundamental frequencies deduced from the horizontal-to-vertical spectral ratio method and a suite of layering ratios in the absence of detailed geological information. Potential for amplification is inferred from the large impedance contrasts at the soil-basement interface in the developed Vₛ profiles. The fundamental site period is over 5s in the Te Rapa and Gordonton depressions in the northern basin, where basement rock is up to 1400m deep. As basement shallows towards the south, fundamental periods shorten. Complex wave propagation occurs towards the southeastern basin influenced by ignimbrite deposition interspersed within the alluvial sediments of the Tauranga Group. Despite the variation in basement structure, velocities associated with lithology changes tend to be relatively consistent, allowing for the use of a four-unit velocity structure to represent basin deposits. The peat bogs which dominate the surficial landscape have significantly low shear wave velocities (28-38m/s), which presented unique difficulties in near surface velocity resolution. The soft near surface soil deposits across the basin have Vₛ₃₀ values ranging from 166-234m/s and four class E sites have been identified. Based on the new Vₛ profiles, a refined fundamental frequency-depth correlation was developed for the region. The results in this thesis are intended to inform site response analysis and seismic risk assessment.

year: 2020

title: Pacific parental engagement and intergenerational storytelling in Aotearoa New Zealand

authors: Cunningham, Emma

abstract: In this article, we focus on how Pacific family support places success of individuals within a wider narrative of intergenerational family stories, contributing to successful futures for the participating Pacific youth and their families. Guided by Pacific research principles, we used interviews with families and adolescents to explore the role of family narratives, in ten Pacific families in Aotearoa New Zealand, which supported academic success for their children. Our data sources included conversations with youth, their families, and visual representations created by the youth to illustrate their perceptions of parental support. The findings highlighted the role of families’ stories in supporting their children’s education. Strong intergenerational expectations were expressed from the dual perspectives of parents and their children. The formative role of family stories within the youths’ experiences of success provides opportunity to acknowledge the relational foundations of intergenerational stories.

text: Pacific parental engagement and intergenerational storytelling in Aotearoa New Zealand In this article, we focus on how Pacific family support places success of individuals within a wider narrative of intergenerational family stories, contributing to successful futures for the participating Pacific youth and their families. Guided by Pacific research principles, we used interviews with families and adolescents to explore the role of family narratives, in ten Pacific families in Aotearoa New Zealand, which supported academic success for their children. Our data sources included conversations with youth, their families, and visual representations created by the youth to illustrate their perceptions of parental support. The findings highlighted the role of families’ stories in supporting their children’s education. Strong intergenerational expectations were expressed from the dual perspectives of parents and their children. The formative role of family stories within the youths’ experiences of success provides opportunity to acknowledge the relational foundations of intergenerational stories.

year: 2022

title: Applying Kaupapa Māori Processes to Documentary Film.

authors: Waititi, Kahurangi Rora

subjects: Maori documentary

abstract: This thesis explores the application of Kaupapa Māori processes to documentary filmmaking through practiced-led research. The need for this research came to light through the experience of witnessing unacceptable behaviour shown by film crews towards kaumātua who were attending the 2006 28th Māori Battalion Reunion. In reflecting on this experience and considering my own filming experience as a person with a Te Ao Māori background, the basis for this argument was conceived. This thesis argues that there are alternative ways in which filming can be conducted by considering processes that already exist within Māori practices and philosophies.          

This Thesis, therefore, investigates alternative processes of filming that have developed from a Kaupapa Māori perspective through practical filming experience.  An historical overview of the relationship between Māori, media and filming practices have been provided to give context to this discussion.  The application of Kaupapa Māori processes to film was considered through the use of Marae protocol and philosophies. The application of these concepts was supported by the creative research which was utilised by referencing specific examples. The reader is, therefore, instructed to refer to the DVD in the front of the thesis as referenced in the written text.

text: Applying Kaupapa Māori Processes to Documentary Film. This thesis explores the application of Kaupapa Māori processes to documentary filmmaking through practiced-led research. The need for this research came to light through the experience of witnessing unacceptable behaviour shown by film crews towards kaumātua who were attending the 2006 28th Māori Battalion Reunion. In reflecting on this experience and considering my own filming experience as a person with a Te Ao Māori background, the basis for this argument was conceived. This thesis argues that there are alternative ways in which filming can be conducted by considering processes that already exist within Māori practices and philosophies.          

This Thesis, therefore, investigates alternative processes of filming that have developed from a Kaupapa Māori perspective through practical filming experience.  An historical overview of the relationship between Māori, media and filming practices have been provided to give context to this discussion.  The application of Kaupapa Māori processes to film was considered through the use of Marae protocol and philosophies. The application of these concepts was supported by the creative research which was utilised by referencing specific examples. The reader is, therefore, instructed to refer to the DVD in the front of the thesis as referenced in the written text.

year: 2007