title: Past, present and future urban water: The challenges in creating more beneficial trajectories

authors: White, Iain

abstract: Alternative visions of cities that treat water more sustainably are becoming more compelling as understanding increases of current impacts and future pressures. Here, an alternative relationship between water, space and citizens is commonly advocated that represents a significant shift from the techno-rational supply-oriented emphasis of the twentieth century. In discussions connected to any transition to a more beneficial urban water trajectory, aspects such as land use change, new technologies or innovative policies are frequently held up as being critical elements. Rather than focus on any notional Water Sensitive City as an outcome to be achieved, this chapter complements this literature by critically examining the processes that may help or hinder transitions of this nature. It firstly explores the historical states of urban water management and links to the wider socio-political context within which change must occur. It then analyses issues related to the speed and scale of land use change, emphasising how every urban area has differing flows of finance, regeneration opportunities or free development space. The argument then turns to path dependence and how institutional, cultural and technological norms may resist attempts at change, before focusing on the difficulties in enabling effective policy transfer across what are distinct territories and contexts. It ends with a discussion on how water is just one of an increasing number of competing urban visions – from the Smart City to the Resilient City – all of which are fighting for attention, resources and action.

text: Past, present and future urban water: The challenges in creating more beneficial trajectories Alternative visions of cities that treat water more sustainably are becoming more compelling as understanding increases of current impacts and future pressures. Here, an alternative relationship between water, space and citizens is commonly advocated that represents a significant shift from the techno-rational supply-oriented emphasis of the twentieth century. In discussions connected to any transition to a more beneficial urban water trajectory, aspects such as land use change, new technologies or innovative policies are frequently held up as being critical elements. Rather than focus on any notional Water Sensitive City as an outcome to be achieved, this chapter complements this literature by critically examining the processes that may help or hinder transitions of this nature. It firstly explores the historical states of urban water management and links to the wider socio-political context within which change must occur. It then analyses issues related to the speed and scale of land use change, emphasising how every urban area has differing flows of finance, regeneration opportunities or free development space. The argument then turns to path dependence and how institutional, cultural and technological norms may resist attempts at change, before focusing on the difficulties in enabling effective policy transfer across what are distinct territories and contexts. It ends with a discussion on how water is just one of an increasing number of competing urban visions – from the Smart City to the Resilient City – all of which are fighting for attention, resources and action.

year: 2017

title: Lithofacies distribution and sediment dynamics on a storm-dominated shelf from combined photographic, acoustic and sedimentological profiling methods (Bay of Plenty, New Zealand)

authors: Kulgemeyer, Tobias

subjects: lithofacies mapping

abstract: Sediment dynamics on a storm-dominated shelf (western Bay of Plenty, New Zealand) were mapped and analyzed using the newly developed multi-sensor benthic profiler MARUM NERIDIS III. An area of 60 km × 7 km between 2 and 35 m water depth was surveyed with this bottom-towed sled equipped with a high-resolution camera for continuous close-up seafloor photography and a CTD with connected turbidity sensor. Here we introduce our approach of using this multi-parameter dataset combined with sidescan sonography and sedimentological analyses to create detailed lithofacies and bedform distribution maps and to derive regional sediment transport patterns.

For the assessment of sediment distribution, photographs were classified and their spatial distribution mapped out according to associated acoustic backscatter from a sidescan sonar. This provisional map was used to choose target locations for surficial sediment sampling and subsequent laboratory analysis of grain size distribution and mineralogical composition. Finally, photographic, granulometric and mineralogical facies were combined into a unified lithofacies map and corresponding stratigraphic model. Eight distinct types of lithofacies with seawards increasing grain size were discriminated and interpreted as reworked relict deposits overlain by post-transgressional fluvial sediments.

The dominant transport processes in different water depths were identified based on type and orientation of bedforms, as well as bottom water turbidity and lithofacies distribution. Observed bedforms include subaquatic dunes, coarse sand ribbons and sorted bedforms of varying dimensions, which were interpreted as being initially formed by erosion. Under fair weather conditions, sediment is transported from the northwest towards the southeast by littoral drift. During storm events, a current from the southeast to the northweast is induced which is transporting sediment along the shore in up to 35 m water depth. Shorewards oriented cross-shore transport is taking place in up to 60 m water depth and is likewise initiated by storm events.

Our study demonstrates how benthic photographic profiling delivers comprehensive compositional, structural and environmental information, which compares well with results obtained by traditional probing methods, but offers much higher spatial resolution while covering larger areas. Multi-sensor benthic profiling enhances the interpretability of acoustic seafloor mapping techniques and is a rapid and economic approach to seabed and habitat mapping especially in muddy to sandy facies.

text: Lithofacies distribution and sediment dynamics on a storm-dominated shelf from combined photographic, acoustic and sedimentological profiling methods (Bay of Plenty, New Zealand) Sediment dynamics on a storm-dominated shelf (western Bay of Plenty, New Zealand) were mapped and analyzed using the newly developed multi-sensor benthic profiler MARUM NERIDIS III. An area of 60 km × 7 km between 2 and 35 m water depth was surveyed with this bottom-towed sled equipped with a high-resolution camera for continuous close-up seafloor photography and a CTD with connected turbidity sensor. Here we introduce our approach of using this multi-parameter dataset combined with sidescan sonography and sedimentological analyses to create detailed lithofacies and bedform distribution maps and to derive regional sediment transport patterns.

For the assessment of sediment distribution, photographs were classified and their spatial distribution mapped out according to associated acoustic backscatter from a sidescan sonar. This provisional map was used to choose target locations for surficial sediment sampling and subsequent laboratory analysis of grain size distribution and mineralogical composition. Finally, photographic, granulometric and mineralogical facies were combined into a unified lithofacies map and corresponding stratigraphic model. Eight distinct types of lithofacies with seawards increasing grain size were discriminated and interpreted as reworked relict deposits overlain by post-transgressional fluvial sediments.

The dominant transport processes in different water depths were identified based on type and orientation of bedforms, as well as bottom water turbidity and lithofacies distribution. Observed bedforms include subaquatic dunes, coarse sand ribbons and sorted bedforms of varying dimensions, which were interpreted as being initially formed by erosion. Under fair weather conditions, sediment is transported from the northwest towards the southeast by littoral drift. During storm events, a current from the southeast to the northweast is induced which is transporting sediment along the shore in up to 35 m water depth. Shorewards oriented cross-shore transport is taking place in up to 60 m water depth and is likewise initiated by storm events.

Our study demonstrates how benthic photographic profiling delivers comprehensive compositional, structural and environmental information, which compares well with results obtained by traditional probing methods, but offers much higher spatial resolution while covering larger areas. Multi-sensor benthic profiling enhances the interpretability of acoustic seafloor mapping techniques and is a rapid and economic approach to seabed and habitat mapping especially in muddy to sandy facies.

year: 2016-03

title: Ngā Wai E Rere Nei: The Physical and Symbolic Representations of Embodied Waters of Birth and Mourning

authors: Dixon, Ngahuia Mereana

subjects: Women water procreation tears

abstract: Recently, there has been considerable public debate and much consternation, especially amongst Māori, about the future New Zealand’s waterways. Māori have strongly held views, tikanga and cultural knowledge, about waterways and their deep connection to iwi (tribal/community) identity, history and sense of well-being. The waterways in public discussion are lakes, rivers, harbours and the ocean.  
This thesis examines deeper aspects of tikanga that relate to Māori concepts of waterways and oceans, but more specifically to the waterways of the human body which I refer to as embodied waters.  Māori cultural concepts of water and tikanga that is applied to water, is interconnected to the wider body of knowledge or mātauranga, in which water, is fundamental to concepts of human and environmental life and death. The thesis examines the tikanga, meaning knowledge, values and practices, regarding the embodied waters, related to human procreation and death. 
The research examines the rich Māori knowledge base, relating to concepts such as te whare tangata, waiū, te ūkaipō, roimata and hupe which still have symbolic and material significance in Māori beliefs, values and practices. The research drew upon kaupapa Māori research approaches, as a way to examine tikanga, from a contemporary Māori perspective. My research examined recorded oral traditions and literatures, including whakatauākī, whakapapa, waiata mōteatea, haka and pūrākau, alongside other research literature in the field. The research approach also included an auto-ethnographic component that has enabled me to connect my own observations and practices, with this literature, to demonstrate how tikanga in relation to this knowledge is applied. The research focuses on two main iwi contexts, Tauranga where I was born and raised, and Waikato, where I have lived since I married into the iwi.   
The thesis reveals the interconnected philosophies, cultural concepts, values and practices that are embedded in language, rituals, traditions, stories and symbols. I argue that these tikanga, give coherence and guidance, to contemporary practise especially in the context of cultural revitalization, where communities are seeking to restore certain tikanga. The thesis also finds that the tikanga relating to embodied waters, for human life and death, still give meaning to the people and communities, who continue to adhere to tikanga, those traditions providing a cultural framework for understanding their identity.

text: Ngā Wai E Rere Nei: The Physical and Symbolic Representations of Embodied Waters of Birth and Mourning Recently, there has been considerable public debate and much consternation, especially amongst Māori, about the future New Zealand’s waterways. Māori have strongly held views, tikanga and cultural knowledge, about waterways and their deep connection to iwi (tribal/community) identity, history and sense of well-being. The waterways in public discussion are lakes, rivers, harbours and the ocean.  
This thesis examines deeper aspects of tikanga that relate to Māori concepts of waterways and oceans, but more specifically to the waterways of the human body which I refer to as embodied waters.  Māori cultural concepts of water and tikanga that is applied to water, is interconnected to the wider body of knowledge or mātauranga, in which water, is fundamental to concepts of human and environmental life and death. The thesis examines the tikanga, meaning knowledge, values and practices, regarding the embodied waters, related to human procreation and death. 
The research examines the rich Māori knowledge base, relating to concepts such as te whare tangata, waiū, te ūkaipō, roimata and hupe which still have symbolic and material significance in Māori beliefs, values and practices. The research drew upon kaupapa Māori research approaches, as a way to examine tikanga, from a contemporary Māori perspective. My research examined recorded oral traditions and literatures, including whakatauākī, whakapapa, waiata mōteatea, haka and pūrākau, alongside other research literature in the field. The research approach also included an auto-ethnographic component that has enabled me to connect my own observations and practices, with this literature, to demonstrate how tikanga in relation to this knowledge is applied. The research focuses on two main iwi contexts, Tauranga where I was born and raised, and Waikato, where I have lived since I married into the iwi.   
The thesis reveals the interconnected philosophies, cultural concepts, values and practices that are embedded in language, rituals, traditions, stories and symbols. I argue that these tikanga, give coherence and guidance, to contemporary practise especially in the context of cultural revitalization, where communities are seeking to restore certain tikanga. The thesis also finds that the tikanga relating to embodied waters, for human life and death, still give meaning to the people and communities, who continue to adhere to tikanga, those traditions providing a cultural framework for understanding their identity.

year: 2013