scholarly journals Detecting Overpressure Zones by Using Model Based Inversion in Kupe Field, New Zealand

2017 ◽  
Author(s):  
Timucin Cakir
Keyword(s):  
New Zealand ◽  
Model Based ◽  
Kupe Field

Applications of geochemistry and basin modeling in the diagenetic evaluation of Paleocene sandstones, Kupe Field, New Zealand

2021 ◽  
Vol 91 (9) ◽  
pp. 945-968
Author(s):  
Karen E. Higgs ◽  
Stuart Munday ◽  
Anne Forbes ◽  
Karsten F. Kroeger
Keyword(s):  
New Zealand ◽  
Element Abundance ◽  
Basin Modeling ◽  
Burial Diagenesis ◽  
Diagenetic Alteration ◽  
Partial Pressures ◽  
Diagenetic Reactions ◽  
Different Levels ◽  
Kupe Field ◽  
Thermal Decarboxylation

ABSTRACT Paleocene sandstones in the Kupe Field of Taranaki Basin, New Zealand, are subdivided into two diagenetic zones, an upper kaolinite–siderite (K-S) zone and a lower chlorite–smectite (Ch-Sm) zone. Petrographic observations show that the K-S zone has formed from diagenetic alteration of earlier-formed Ch-Sm sandstones, whereby biotite and chlorite–smectite have been altered to form kaolinite and siderite, and plagioclase has reacted to form kaolinite and quartz. These diagenetic zones can be difficult to discriminate from downhole bulk-rock geochemistry, which is largely due to a change in element-mineral affinities without a wholesale change in element abundance. However, some elements have proven useful for delimiting the diagenetic zones, particularly Ca and Na, where much lower abundances in the K-S zone are interpreted to represent removal of labile elements during diagenesis. Multivariate analysis has also proven an effective method of distinguishing the diagenetic zones by highlighting elemental affinities that are interpreted to represent the principal diagenetic phases. These include Fe-Mg-Mn (siderite) in the K-S zone, and Ca-Mn (calcite) and Fe-Mg-Ti-Y-Sc-V (biotite and chlorite–smectite) in the Ch-Sm zone. Results from this study demonstrate that the base of the K-S zone approximately corresponds to the base of the current hydrocarbon column. An assessment with 1D basin models and published stable-isotope data show that K-S diagenesis is likely to have occurred during deep-burial diagenesis in the last 4 Myr. Modeling predicts that CO2-rich fluids were generating from thermal decarboxylation of intraformational Paleocene coals at this time, and accumulation of high partial pressures of intraformational CO2 in the hydrocarbon column is considered a viable catalyst for the diagenetic reactions. Variable CO2 concentrations and residence times are interpreted to be the reason for different levels of K-S diagenesis, which is supported by a clear relationship between the presence or absence of a well-developed K-S zone and the present-day reservoir-corrected CO2 content.

Family Group Conferences: Partnership in Practice

1996 ◽  
Vol 20 (1) ◽  
pp. 16-23 ◽  
Author(s):  
Murray Ryburn ◽  
Celia Atherton
Keyword(s):  
Social Work ◽  
New Zealand ◽  
Work Practice ◽  
Social Work Practice ◽  
Family Group ◽  
Family Group Conference ◽  
Model Based ◽  
The Family ◽  
The Uk

The quality of relationship between families and professionals is clearly crucial to the development of good social work practice, especially where the care and protection of children are concerned. After tracing the origins of the Family Group Conference in New Zealand, Murray Ryburn and Celia Atherton describe the procedure and explain how this model, based on a commitment to partnership, is being adapted and used in the UK.

Microbial biofacies in hot-spring sinters; a model based on Ohaaki Pool, North Island, New Zealand

1998 ◽  
Vol 68 (3) ◽  
pp. 413-434 ◽  
Author(s):  
B. Jones ◽  
R. W. Renaut ◽  
M. R. Rosen
Keyword(s):  
New Zealand ◽  
Hot Spring ◽  
Model Based

Forecasting catastrophic stratovolcano collapse: A model based on Mount Taranaki, New Zealand

Geology ◽  
2012 ◽  
Vol 40 (11) ◽  
pp. 983-986 ◽  
Author(s):  
Anke V. Zernack ◽  
Shane J. Cronin ◽  
Mark S. Bebbington ◽  
Richard C. Price ◽  
Ian E.M. Smith ◽  
...  
Keyword(s):  
New Zealand ◽  
Model Based

scholarly journals A Consistent Geological-Seismological Model For Earthquake Occurrence in New Zealand

2021 ◽  
Author(s):  
◽  
Christian Stock
Keyword(s):  
New Zealand ◽  
Active Faults ◽  
Kernel Estimation ◽  
Fault Model ◽  
Strike Slip ◽  
Historical Earthquake ◽  
Earthquake Occurrence ◽  
Model Based ◽  
Adaptive Kernel ◽  
Dynamic Stochastic

<p>For the development of earthquake occurrence models, historical earthquake catalogues and compilations of mapped, active faults are often used. The goal of this study is to develop new methodologies for the generation of an earthquake occurrence model for New Zealand that is consistent with both data sets. For the construction of a seismological earthquake occurrence model based on the historical earthquake record, 'adaptive kernel estimation' has been used in this study. Based on this method a technique has been introduced to filter temporal sequences (e.g. aftershocks). Finally, a test has been developed for comparing different earthquake occurrence models. It has been found that the adaptive kernel estimation with temporal sequence filtering gives the best joint fit between the earthquake catalogue and the earthquake occurrence model, and between two earthquake occurrence models obtained from data from two independent time intervals. For the development of a geological earthquake occurrence model based on fault information, earthquake source relationships (i.e. rupture length versus rupture width scaling) have been revised. It has been found that large dip-slip and strike-slip earthquakes scale differently. Using these source relationships a dynamic stochastic fault model has been introduced. Whereas earthquake hazard studies often do not allow individual fault segments to produce compound ruptures, this model allows the linking of fault segments by chance. The moment release of simulated fault ruptures has been compared with the theoretical deformation along the plate boundary. When comparing the seismological and the geological earthquake occurrence model, it has been found that a 'good' occurrence model for large dip-slip earthquakes is given by the seismological occurrence model using the Gutenberg-Richter magnitude frequency distribution. In contrast, regions dominated by long strike-slip faults produce large earthquakes but not many small earthquakes and the occurrence of earthquakes on such faults should be inferred from the dynamic fault model.</p>

scholarly journals MAKEing: A New Zealand tiny house as an exploration of research by making within architecture.

2021 ◽  
Author(s):  
◽  
Petra Parker-Price
Keyword(s):  
New Zealand ◽  
Design Research ◽  
Significant Aspect ◽  
Alternative Design ◽  
Architectural Production ◽  
Model Based

<p>Making within architecture encompasses many definitions and modes, but these are often at some distance from the production of buildings. IE architect’s ‘make’ drawings and models, but a builder makes a building. This thesis explores the benefits and liabilities of bridging between imagining and enacting architectural production thought the design and build of a ‘tiny house’. Via an analysis of craft, symbol, processes and experience, the research begins with the activities of ‘the hands’ in architectural production. From here the mode of micro-architecture – specifically, a client driven ‘tiny house’ - is investigated and implemented as an example of research-by-making. A theoretical and model-based concept for the design of the ‘tiny house’ was developed, from which research by-making could be conducted. The Build Phase, comprising the most significant aspect of this research, was then implemented, with commentary and reflection. Although this approach is not without its limitations as a proxy for practice based making, it facilitates a greater range of making considerations than conventional studio-based production. In this way this project makes and advances an alternative design-research while advocating for learning by making.</p>

scholarly journals A Consistent Geological-Seismological Model For Earthquake Occurrence in New Zealand

2021 ◽  
Author(s):  
◽  
Christian Stock
Keyword(s):  
New Zealand ◽  
Active Faults ◽  
Kernel Estimation ◽  
Fault Model ◽  
Strike Slip ◽  
Historical Earthquake ◽  
Earthquake Occurrence ◽  
Model Based ◽  
Adaptive Kernel ◽  
Dynamic Stochastic

<p>For the development of earthquake occurrence models, historical earthquake catalogues and compilations of mapped, active faults are often used. The goal of this study is to develop new methodologies for the generation of an earthquake occurrence model for New Zealand that is consistent with both data sets. For the construction of a seismological earthquake occurrence model based on the historical earthquake record, 'adaptive kernel estimation' has been used in this study. Based on this method a technique has been introduced to filter temporal sequences (e.g. aftershocks). Finally, a test has been developed for comparing different earthquake occurrence models. It has been found that the adaptive kernel estimation with temporal sequence filtering gives the best joint fit between the earthquake catalogue and the earthquake occurrence model, and between two earthquake occurrence models obtained from data from two independent time intervals. For the development of a geological earthquake occurrence model based on fault information, earthquake source relationships (i.e. rupture length versus rupture width scaling) have been revised. It has been found that large dip-slip and strike-slip earthquakes scale differently. Using these source relationships a dynamic stochastic fault model has been introduced. Whereas earthquake hazard studies often do not allow individual fault segments to produce compound ruptures, this model allows the linking of fault segments by chance. The moment release of simulated fault ruptures has been compared with the theoretical deformation along the plate boundary. When comparing the seismological and the geological earthquake occurrence model, it has been found that a 'good' occurrence model for large dip-slip earthquakes is given by the seismological occurrence model using the Gutenberg-Richter magnitude frequency distribution. In contrast, regions dominated by long strike-slip faults produce large earthquakes but not many small earthquakes and the occurrence of earthquakes on such faults should be inferred from the dynamic fault model.</p>

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