title: Sensitive pyroclastic soils in the Bay of Plenty, New Zealand: microstructure to failure mechanisms

authors: Moon, Vicki G.

subjects: sensitive soil

abstract: Sensitive soils derived from weathered rhyolitic pyroclastic materials are associated with many landslides in the Bay of Plenty. Undrained, consolidated static triaxial tests show contractive p’-q’ plots, strain-softening stress-strain behaviour coupled with rising pore water pressures, shear band formation after peak strength, and considerable strain softening. Cyclic triaxial tests confirm brittle failure and extensive softening of the soil. Pore pressure gradients developed during shearing initiate collapse of clay microstructures into shear zones; further excess pore pressure generation in the shear zone leads to progressive failure. Halloysite, a low-activity clay mineral, is associated with sensitive layers within the pyroclastic sequences. Mushroom cap–shaped spheroidal halloysite results in weak short-range interactions between exposed clay surfaces on incomplete spheroids. This weak bonding allows disassociation of clay aggregates during slope failure, leading to strain softening and the development of flow post-failure.

text: Sensitive pyroclastic soils in the Bay of Plenty, New Zealand: microstructure to failure mechanisms Sensitive soils derived from weathered rhyolitic pyroclastic materials are associated with many landslides in the Bay of Plenty. Undrained, consolidated static triaxial tests show contractive p’-q’ plots, strain-softening stress-strain behaviour coupled with rising pore water pressures, shear band formation after peak strength, and considerable strain softening. Cyclic triaxial tests confirm brittle failure and extensive softening of the soil. Pore pressure gradients developed during shearing initiate collapse of clay microstructures into shear zones; further excess pore pressure generation in the shear zone leads to progressive failure. Halloysite, a low-activity clay mineral, is associated with sensitive layers within the pyroclastic sequences. Mushroom cap–shaped spheroidal halloysite results in weak short-range interactions between exposed clay surfaces on incomplete spheroids. This weak bonding allows disassociation of clay aggregates during slope failure, leading to strain softening and the development of flow post-failure.

year: 2017

title: Lakes

authors: Lowe, David J.

abstract: Lakes have always held an aesthetic fascination for people; they figure prominently in both art and literature and have even been endowed with spiritual qualities. For example, the nineteenth century American writer Henry D. Thoreau (1854) considered a lake to be 'the landscape's most beautiful and expressive feature. It is the earth's eye; looking into which the beholder measures the depth of his own nature'. More prosaically, lakes are also of considerable geomorphological interest as dynamic landfonns originating in varied and often complex ways.

text: Lakes Lakes have always held an aesthetic fascination for people; they figure prominently in both art and literature and have even been endowed with spiritual qualities. For example, the nineteenth century American writer Henry D. Thoreau (1854) considered a lake to be 'the landscape's most beautiful and expressive feature. It is the earth's eye; looking into which the beholder measures the depth of his own nature'. More prosaically, lakes are also of considerable geomorphological interest as dynamic landfonns originating in varied and often complex ways.

year: 1992-01-01

title: He Māori, He Turi, He Turi, He Māori. Advancing the aspirations of Māori Deaf with their indigenous Connections: A case study

authors: Dunn, Katie Merepaea

subjects: Māori Deaf

abstract: Indigenous peoples consider their connection to whenua (land), whakapapa (genealogy), te reo (language) and tikanga (cultural values) to be an integral part of their worldview (Mead, 2003 & Barlow, 1991).

The identity struggle for indigenous minorities living within a colonised environment has been well documented (Bishop, 1995; Smith G, 1997; Smith L, 1999, & Walker, 2004). The controversies over land, customs, culture and language are major issues to understanding and maintaining one’s own cultural identity and, when considering the Deaf indigenous minorities, the task seems colossal.

When a Māori individual belongs to the hearing majority, the ability to find a place to stand, a connection to one’s turangawaewae (standing place), whakapapa, and marae (village) can be a personal struggle; however, this can often be overcome through a shared experience, through communication at a whānau (family), hapū (sub tribe) and iwi (tribe) level.  However, when the individual is part of a double minority such as the Māori Deaf community, the ability to engage and establish a relationship to enhance their connection to their turangawaewae, can become difficult due to the need to communicate in three different languages: English, Māori and Sign Language.  These language issues can create barriers for the Deaf, Māori and hearing communities at a whānau, hapū and iwi level.

This thesis examines a series of workshops created to advance the indigenous connections and understanding within the Māori Deaf community and Te Ao Māori (Māori worldview). It explores how the integration of the Deaf and hearing, indigenous Māori language and New Zealand Sign Language along with practical workshops can assist the aspirations of Māori Deaf within the advancement of Te Ao Māori and Te Reo Māori.  Within this thesis I will undertake a series of interviews with participants who are at the forefront of the Māori Deaf community. A suggestion of moving forward to address the needs of the Māori Deaf community within the desire to connect to their Māori language and customs is also offered within this thesis.

text: He Māori, He Turi, He Turi, He Māori. Advancing the aspirations of Māori Deaf with their indigenous Connections: A case study Indigenous peoples consider their connection to whenua (land), whakapapa (genealogy), te reo (language) and tikanga (cultural values) to be an integral part of their worldview (Mead, 2003 & Barlow, 1991).

The identity struggle for indigenous minorities living within a colonised environment has been well documented (Bishop, 1995; Smith G, 1997; Smith L, 1999, & Walker, 2004). The controversies over land, customs, culture and language are major issues to understanding and maintaining one’s own cultural identity and, when considering the Deaf indigenous minorities, the task seems colossal.

When a Māori individual belongs to the hearing majority, the ability to find a place to stand, a connection to one’s turangawaewae (standing place), whakapapa, and marae (village) can be a personal struggle; however, this can often be overcome through a shared experience, through communication at a whānau (family), hapū (sub tribe) and iwi (tribe) level.  However, when the individual is part of a double minority such as the Māori Deaf community, the ability to engage and establish a relationship to enhance their connection to their turangawaewae, can become difficult due to the need to communicate in three different languages: English, Māori and Sign Language.  These language issues can create barriers for the Deaf, Māori and hearing communities at a whānau, hapū and iwi level.

This thesis examines a series of workshops created to advance the indigenous connections and understanding within the Māori Deaf community and Te Ao Māori (Māori worldview). It explores how the integration of the Deaf and hearing, indigenous Māori language and New Zealand Sign Language along with practical workshops can assist the aspirations of Māori Deaf within the advancement of Te Ao Māori and Te Reo Māori.  Within this thesis I will undertake a series of interviews with participants who are at the forefront of the Māori Deaf community. A suggestion of moving forward to address the needs of the Māori Deaf community within the desire to connect to their Māori language and customs is also offered within this thesis.

year: 2012