Dissertations / Theses on the topic 'Southern Dept'

Thesis (MPhil)--University of Stellenbosch, 2007.
ENGLISH ABSTRACT: The Department of Water Affairs and Forestry (DWAF) maintains that its people-centred Participatory Forest Management (PFM) program contributes to rural poverty eradication through provision of employment, skills training and sharing of benefits of sustainable forest management. It also asserts that local people in the forested parts of South Africa interactively participate in designing systems and institutions that shape forest resources use and management and hence influence their livelihood strategies. Furthermore, the department asserts that the PFM program has taken off exceptionally well in the Southern Cape Forests than anywhere else in South Africa. This means that local people that inhabit the margins of the Southern Cape Forests benefit from the management of these forests. Consequently, this study set out to investigate the socio-economic contribution of the PFM intervention to the two forest-dwelling communities of Diepwalle and Covie within the Southern Cape Forests. The investigation employed an outcome based evaluation approach and was summative in nature. Data were gathered by conducting a 100% survey of the two communities and also through a workshop. Informal interactions and discussions as well as visual observations were used to verify data as the purpose of the study was to present an unbiased, multi-voiced account of the socio-economic contributions of the PFM intervention to the Diepwalle and Covie communities. The results of this research show that the outcomes of the PFM intervention have not been met in the two communities. It was found that the vast majority of the households in the two communities were not aware at the time of this study of the PFM program. There were at the time of the study no PFM-based incentives for local communities to actively participate in the sustainable use and management of the indigenous forests in the vicinity of Diepwalle and Covie. Almost all the householders in the two communities stressed that they do not benefit from the management of the indigenous forests. The existing management approach followed in the Southern Cape Forests does not appear to have more socio-economic and environmental gains than the conventional approach which excludes local people from the planning, designing, implementation and evaluation of institutions and systems which affect their physical environment. The study recommends, among others, regular evaluation of the PFM program to fast track its successful implementation and to ensure that the National Forests Act of 1998 that establishes PFM is fully implemented to realize the socio-economic benefits of forest conservation.
AFRIKAANSE OPSOMMING: Volgens die Departement Waterwese en Bosbou (DWB) dra die Mensgesentreerde Deelnemende Bosbestuursprogram (Participatory Forest Management of PFM) by tot die uitwissing van armoede op die platteland deur werkverskaffing, vaardigheidsopleiding en die deel in voordele van volhoubare bosbestuur. Die DWB beweer dat inwoners van die woudgebiede van Suid-Afrika deelneem aan die ontwerp van stelsels en instellings wat die gebruik en bestuur van woudhulpbronne vorm en daarom hulle broodwinningstrategieë beïnvloed. Verder voer die DWB aan dat die PFM-program aansienlik beter in die Suid-Kaapse Woude weggespring het as op enige ander plek in Suid-Afrika. Dit beteken dat plaaslike mense wat in buitewyke van die Suid-Kaapse Woude woon, voordeel trek uit die bestuur van die woude. Hierdie studie is onderneem om die sosio-ekonomiese bydrae van die PFM-intervensie tot twee woudgemeenskappe, Diepwalle en Covie, in die Suid-Kaapse Woude te ondersoek. Die ondersoek het 'n uitkomsgebaseerde evaluasiebenadering gevolg en was summatief van aard. Gegewens is deur 'n 100%-opname van die gemeenskappe en tydens 'n werkswinkel versamel. Informele interaksies en besprekings asook visuele waarnemings is gebruik om gegewens te verifieer, omdat die doel van die studie was om 'n onbevooroordeelde, veelstemmige verslag van die sosio-ekonomiese bydraes van die PFM-intervensie tot bogenoemde gemeenskappe daar te stel. Die navorsingsresultate toon dat die uitkomste van die PFM-intervensie nie in die twee gemeenskappe bereik is nie. Die oorgrote meerderheid huishoudings was ten tye van die studie onbewus van die program en daar was geen PFM-gebaseerde aansporings vir plaaslike gemeenskappe om aktief aan die volhoubare gebruik en bestuur van die inheemse woude in die Diepwalle- en Covie-omgewing deel te neem nie. Bykans al die huishouers het benadruk dat hulle geen voordeel uit die bestuur van die inheemse woude trek nie. Geen getuienis is gevind wat bevestig dat bekwaamhede bevorder is as gevolg van die PFM-program nie. Alle deelnemers ontken vaardigheidsontwikkeling wat deur die PFM geinisieer is. Dit blyk dat die bestaande bestuursbenadering wat in die Suid-Kaapse Woude gevolg word, nie meer sosio-ekonomiese en omgewingsvoordele lewer nie as die konvensionele benadering wat plaaslike mense uitsluit van die beplanning, ontwerp, implementering en evaluasie van instellings en stelsels wat hulle fisiese omgewing beïnvloed. Die studie beveel onder andere gereelde evaluasie van die PFM-program aan om die suksesvolle implementering daarvan te bespoedig en te verseker dat die Wet op Nasionale Woude van 1998 volledig geïmplementeer word sodat die sosio-ekonomiese voordele van woudbewaring kan realiseer.

This thesis analyses the existing legal framework that applies to franchising in South Africa today. The study begins with an examination of the history and nature of the franchise contract, focusing particularly on the nature of the franchise relationship. This study is undertaken in order to substantiate the argument that franchising is a unique method of doing business. There is a need therefore to recognise that the franchise contract is a special contract in its own right, just like contracts of sale, lease, insurance and suretyship. The study then goes on to examine the problems which are experienced in the sector, as well as the law which must provide solutions to these problems. The research will show that in a modern commercial world the existing legal framework, especially the common law, cannot adequately deal with many of these problems. The complex relationship between franchising and competition law is also explored. A common thread that emerges from franchise disputes is the lack of protection afforded to the interests of franchisees. Franchisees tend to be at the mercy of economically stronger franchisors, hence the belief that there is a need for a stronger regulatory framework. The study then shifts to proposals for reform. In 2000 the Department of Trade and Industry (DTI) established the Franchise Steering Committee in conjunction with the Franchise Association of South Africa (FASA) to review the regulatory environment. This Committee drafted franchise legislation which aimed to bring the regulation of the sector under the control of the DTI. This legislation has not been implemented and the DTI has changed its strategy. Instead of dealing with franchising independently, franchising will fall within the scope of consumer protection legislation. Both the consumer protection legislation and the legislation proposed by the Franchise Steering Committee are thoroughly examined and explained. Shortcomings in the proposals are highlighted and an alternative approach is recommended. It is proposed that franchise-specific legislation should be introduced but that this legislation should establish a system of co-regulation between the government and the franchise sector.

The Southern Ocean plays a major role in global climate system. An understanding of Southern Ocean dynamics allows for a better understanding of the carbon cycle and possible future climate conditions. Earth System Models are used to study Southern Ocean dynamics and are currently producing reliable global annual carbon uptake but have limiting seasonal abilities. These models produce dependable results on a global scale, with more conflicting results on a basin scale. Here we study the impact of mesoscale variability on the Mixed Layer Depth in the Sub-Tropical and Sub-Antarctic Zone of the South Atlantic. The region is hugely impacted by the mesoscale variability as a result of the South African boundary currents. We use two regional simulations both at 1/4o resolution, with one model containing online nested child domain over the South African boundary currents (1/12o resolution). The inter-annual simulations both use the same forcing which allow for a comparison study between the two models. Both the nested and standalone model are able to capture the large scale oceanographic features in the domain. The biggest difference is seen in the Agulhas Current region, where the nested model simulates better mesoscale features, resulting in a fairly accurate position of the Agulhas retroflection and return current. The standalone model contains a high temperature and salinity bias which influences the vertical structure of the water column. Both models are able to simulate the seasonality of the MLD in the Sub-Tropical and Sub-Antarctic Zone in the Atlantic sector. The models overestimate MLD in regions closer to the boundary currents. In the nested model the presence of increased mesoscale features promotes stratification of the water column. The differences seen in the MLD of the two models are linked to the temperature and salinity bias in the standalone model as well as the increased mesoscale variability in the nested model.

碩士
國立中央大學
地球物理研究所
98
In this study, we figure out the Moho depths in southern Taiwan by using receiver function. The sources of the data are from TAIGER project and Central Weather Bureau Seismograph Network (CWBSN). And we use five broadband seismic stations of TGS-line of TAIGER I, seven stations of CWBSN from 2006 to 2007 and six broadband seismic stations of SS-line of TAIGER II at 2009. The coverage of these stations includes Kaohsiung, Pingtung, Taitung. From these stations, we pick up the earthquake events whose epicenters and magnitudes are between 30 to 90 degree and greater than 6.0, respectively. In aspect of data analysis, the Multiple-Taper Correlation estimation is used calculating the radial receiver function in the first step. Then, we compute the possible Moho depth and κ value (Vp/Vs) by H-κ stacking. The results indicate the Moho depths in the western foothills are approximated 32 to 35 km. And it gradually becomes deeper in the Central Mountain Range, around 35 to 40 km. For station TGS12, the depth is 40 km, it is the deepest in this study. The Moho depth beneath FULB is 16 km, and it indicates that FULB, east of the Longitudinal Valley, is located above the Philippine Sea Plate. According to further analysis and discussion with former researches, we can have the following conclusions: (1)Comparing the result with former three velocity models and one density model, our result is mostly consisted with the density model proposed by Hsieh(2009) and in velocity model is Cheng(2009). (2)Comparing the result with former studies about receiver function in Taiwan, our result is most similar in Wang et al(2010). (3)We re-group the events by back azimuth into four quadrants and get the similar Moho depths as previous ones.

This study examines the public debt, public debt service and economic growth nexus in Zambia, Zimbabwe and South Africa using time-series data from 1970 to 2017. This research provides empirical evidence to contribute, firstly, to the ongoing public policy debate regarding the dynamic relationship between public debt, public debt service and economic growth, and their causal relationship; and secondly, to the relative impact of domestic and foreign public debt on economic growth in the selected study countries. For this purpose, four empirical models were utilised and estimated using the Autoregressive Distributed Lag (ARDL) bounds to cointegration and the error correction ARDL-based causality test. Model 1 explored the impact of aggregate public debt on economic growth, while Model 2 investigated the relative impact of domestic and foreign public debt on economic growth. Model 3 examined the impact of public debt service on economic growth, whereas the causality between aggregate public debt and economic growth, and between public debt service and economic growth is tested in Model 4a and Model 4b, respectively. Results show that in Model 1, aggregate public debt has a positive impact on economic growth in Zambia but is negative in Zimbabwe and South Africa. In Model 2, domestic public debt negatively impacts economic growth in Zambia and Zimbabwe and positive impact in South Africa. In addition, foreign public debt has a positive impact on economic growth in Zambia and negative impact in Zimbabwe and South Africa. The results from Model 3 largely support a negative relationship between public debt service and economic growth in Zambia and Zimbabwe, and an insignificant relationship in South Africa. The causality results for Model 4a indicate that it is economic growth that drives public debt in all the study countries. Finally, no causal relationship between public debt service and economic growth was confirmed in all the study countries (Model 4b).
Economics
D. Phil. (Economics)

Snow is a common overlying surface during winter-time and the redistribution of snow by wind is a very important concept for any hydrological research project located within the cryosphere. Wind redistributes snow by eroding it from areas of high wind speed, such as ridge tops and windward slopes, and deposits it in areas of lower wind speeds, such as the lees of ridge tops, vegetation stands, and topographic depressions. The accurate modelling of blowing snow processes such as erosion, deposition, and sublimation have proven to be rather problematic. The largest issue that many modellers must deal with is the accurate collection of solid precipitation throughout the winter season. Without this, incorrect energy and mass balances can occur. This thesis makes use of a new method of acquiring solid precipitation values through the use of an SR50a ultrasonic snow depth sensor and then incorporates it into a version of the Cold Regions Hydrological Model (CRHM) which includes the Prairie Blowing Snow Model (PBSM) and the Minimal Snowmelt Model (MSM) modules. The model is used to simulate seasonal snow depth over an agricultural field in southern Ontario, Canada and is driven with half-hourly locally acquired meteorological data for 83 days during the 2008-2009 winter season. Semi-automated snow surveys are conducted throughout the winter season and the collected in situ snow depth values are compared to the simulated snow depth values at multiple scales. Two modelling approaches are taken to temporally and spatially test model performance. A lumped approach tests the model‟s ability to simulate snow depth from a small point scale and from a larger field scale. A distributed approach separates the entire field site into three hydrological response units (HRUs) and tests the model‟s ability to spatially discretize at the field scale. HRUs are differentiated by varying vegetation heights throughout the field site. Temporal analysis compares the simulated results to each day of snow survey and for the entire field season. Model performance is statistically analyzed through the use of a Root Mean Square Difference (RMSD), Nash-Sutcliffe coefficient (NS), and Model Bias (MB). Both the lumped and distributed modelling approaches fail to simulate the early on-set of snow but once the snow-holding capacities are reached within the field site the model does well to simulate the average snow depth during the latter few days of snow survey as well as throughout the entire field season. Several model limitations are present which prevent the model from incorporating the scaling effects of topography, vegetation, and man-made objects as well as the effects from certain energy fluxes. These limitations are discussed further.

碩士
國立臺灣師範大學
地球科學系
106
According to historical tsunami data, most of the tsunami events are triggered by submarine earthquakes, and the submarine earthquakes that occur in the subduction zone are highly threatening. The accretionary wedge is one of the important geological features of the subduction zone, but the strengths of decollement and accretionary wedge are difficult to constrain. In the Manila subduction zone south of Taiwan, previous studies have reported that a major decollement is present in the accretionary wedge. This study analyzed four large-offset seismic profile collected during the TAIGER survey in 2009, for the purpose to understanding the evolution and influencing factors of the mechanical mechanism of the accretionary wedge in southern Taiwan. In seismic process, Radon filter and eigenvector filter are applied to eliminate the multiples on the seismic profiles and uese interval velocity to time-depth correlation. The fluid retention depth (FRD) is constrained by the velocity structure, and measure the seafloor slope (α) and the decollement dip(β). Controlling factor of shape of Manlia subduction zone is investigated via the critically heterogeneous Coulomb wedge theory. Also, the average shear-friction angle (φ) of the core obtained from the OR1-1032 survey at Xiao Liuqiu is used to calculate the pore-water pressure ratio (λb) and the average coefficient of friction (μb) of the decollement. Integrating the results from previous studies and this study, found that the fluid retention depth (FRD) deeper before the fault occurs and may indicate the direction of future fault development. Compare to previous studying, wdge in the southern of Taiwan relatively sronger decollement strenght and weaker wege strength. The wege strnght is about two to four times the decollement strenght. Because of the seamount subduction in lines MGL0905-25A and MGL0908-4, the pore-water pressure is relatively low and the average coefficient of friction is relatively high. And the average coefficient of friction of line MGL0905-25A is much higher than other lines, there may be a high potential to produce large earthquakes in the future.

Aerosol are solid or liquid particles suspended in the atmosphere ranging in size from 10 3 to 102 m. Aerosol influence both the regional and global climate of the earth by its direct and indirect effect. Role of atmospheric aerosols on the radiative forcing of atmosphere is a matter of serious research for past few decades and still it remains highly uncertain as acknowledged by Intergovernmental Panel on Climate Change. Heterogeneous nature of aerosol both spatially and temporally makes it more complex in estimating radiative forcing compared to that of greenhouse gases. Compounding to the existing difficulty in determining the climate effects, changing aerosol concentration and nature of the aerosol further increases the complexity in determining its effects in both regional and global climate. Increasing aerosol loading is emerging to be an issue of major concern over several regions. The first step towards achieving this goal is by determining the trends in the physical and optical properties of aerosol over the globe. Main objective of the thesis is the determination of the recent trends in aerosol loading over the globe and then to focus specifically on the properties of aerosol over an urban site in southern India. Specific objectives are (a) to determine the trend in aerosol physical and optical properties over the globe using AERONET surface observations (b) to characterize the chemical properties of water soluble inorganic aerosol over an urban site in Southern India, Bangalore (c) to have a better estimation of aerosol radiative forcing over Bangalore with measured aerosol chemical concentration, black carbon concentration and aerosol optical depth (AOD). To quantify the recent trends in aerosol loading over the globe, we have used the surface observations from AERONET and the study provided the first step in giving a global picture of the recent trends in the fundamental optical and physical property of aerosol. Trend analysis showed a significant spatial inhomogenity, and Asian continent clearly showed an increasing trend in AOD compared to other continents. Solar village (24.9oN, 46.4oE) of Saudi Arabia showed a maximum with a value of 0.04/yr and Bac -Giang (21oN, 106oE) of Vietnam showed the minimum value of -0.04/yr. North American study region included 18 sites in which eastern US (E.US) exhibited a decreasing trend while the scenario in western US (W.US) is different with more of sites with increasing AOD trend. Single scattering albedo (SSA) trend in W. US showed a decreasing trend irrespective of the AOD trend. Study sites in South America include Cordoba -CETT (31.5oNS, 64.5 oN W) Alta Floresta (9.8oS, 56.1 o W), Riobranco (9.9oNS, 67.8o W) and Soa Poulo (23.5oS, 46.7o W).Except Riobranco which has a positive trend in AOD, all other sites exhibited a statistically signi cant negative trend. Over Australia, there is an inclination towards increasing AOD in sites and all the three sites in Australia exhibit a statistically significant increasing trend in SSA. According to the recent trends in AOD over African region, there exists a significant decrease in AOD compared to that reported for few years earlier, showing the high temporal in homogeneity and need for continuous observation of aerosol over the regions. European study region included 15 stations, among them only 3 sites showed an increasing trend in AOD, remaining 12 sites showed a significant decreasing trend in aerosol loading over the period of study. SSA was also observed to be decreasing over most of the European sites, even with a decreasing AOD over most of the sites. A Comparison study carried out to determine the relation of population growth rate and aerosol loading, and it revealed that the increasing AOD trend not always coincided with the sites having high population growth rate. Having determined the trends in AOD and other aerosol parameters over the globe and seeing an alarmingly increasing trend over most of the Asian sites, especially over Indian region, we have then focused over work on the aerosol properties of one of the rapidly growing urban location in southern India, Bangalore. While physical properties of aerosol have been extensively studied over Bangalore, chemical characteristics are still an unexplored area. Extensive information on aerosol chemical composition is not available over Indian region except for a few locations based on campaign mode. Even available data is of very coarse temporal resolution, since hours or full day sampling is needed to gather enough samples for chemical analysis. High temporal resolution data of aerosol chemical characteristics, especially for all season is completely lacking over Indian subcontinent. Among aerosol, water soluble aerosol form an important component in particulate matter, since it can change its size, composition, can easily mix with other aerosols and can act as cloud condensation nuclei, based on its hygroscopic nature. Present study provided the rst time results from a high temporal resolution water soluble inorganic aerosol chemical data over Indian region, which is first step towards estimating aerosol climate impacts more accurately. Water soluble inorganic aerosol ions over Bangalore namely, sulphate, nitrate, chloride, potassium, calcium, magnesium, sodium and ammonium are measured using Particle Into Liquid Sampler Ion Chromatograph (PILS-IC). PILS is an online sampling technique for quantitatively measuring the chemical concentration of ion in water soluble aerosol particles. PILS IC used in the present study is developed in Georgia Institute of Technology. Instrument samples ambient air at a flow rate of 16.7Lmin 1. Particles below PM 2.5 micron are collected for the analysis using cyclone impactor. Two annular glass denuders are used to remove inorganic gases which else will interfere with the aerosol ion concentration. Ambient air which is deprived of the inorganic gases is then mixed with steam vapours at 150oC, eventually high supersaturated atmosphere is produced with rapid adiabatic mixing of steam and ambient air. High supersaturated air allows droplets to grow enough to be collected by inertial impaction onto a quartz impactor plate. Entire PILS condensation unit is kept at a slight tilt of 15o, to remove all condensate through drain tube connected to the end of the PILS condensate body. Condensed liquid sample is collected from the impaction chamber and known concentration LiF is allowed to mix with the collected sample at a constant rate. LiF known as carrier liquid is added to know the dilution occurring to the collected sample. Sample with carrier liquid is then collected to a debubbler and is supplied to the IC through peristaltic tubings for determining the ion chemical concentration. Seasonal variation of mass concentration of water soluble aerosol species and the influence of long range transport is carried out using HYSPILT back trajectory analysis. Marine air mass from Arabian Sea dominated the air parcel reaching the site for both SW monsoon and summer. Continental air mass dominated the site during both NE monsoon and winter with slight contribution from marine atmosphere. Source characteristics of sulphate, potassium, calcium and magnesium ions are carried out based on sea salt (ss) and non sea salt (nss) origin and it is observed that the nss contribution is dominant over the site for all these ions except magnesium where ss component comparatively dominates the source. SO24 and NO3 form the dominant anions while NH+4 makes the dominant cation species. Monthly variation of the ratio of ammonium to nss -sulphate is carried out to determine the possible cation -anion relation existing between these two major ions. During later winter and summer months ammonium bi sulphate is found to be the existing chemical form and ammonium sulphate during other seasons. High temporal resolution data enabled us to study the diurnal variation of aerosol ions and it is influenced by various mechanisms from boundary layer to local emissions. Optical properties of aerosols depend upon the size and the relative abun-dance of each components. It is usual practice to assume default aerosol chemical composition in radiative transfer models due to unavailability of data, which can lead to errors in forcing estimates. Incorporating realistic aerosol chemical composition in models is essential to reduce the uncertainty in aerosol radiative forcing. Hence we have included measured aerosol chemical compositions, black carbon and AOD to improve the determination of radiative forcing of aerosol. OPAC and SBDART models were used for estimating the aerosol radiative forcing over Bangalore. We have used mainly four components namely, soot, water soluble, sea salt and dust. Except dust all are other components are measured over the site and formed a constrain for the calculation. Dust concentration was altered so that the OPAC AOD matched the measured AOD within 5%. Mineral dust shows the highest contribution in AOD among the four components, however water soluble and soot even being less is mass concentration compared to mineral dust, has significant impact on the AOD. This clearly indicate the influence of both water soluble and soot aerosol over the regional climate of the site. Sea Salt exhibited low AOD compared to other three constituents. The results presented in the thesis highlights the importance of varying trends in the aerosol properties and its effects on a global picture and speci - cally over an urban site in Indian region , we explored the temporal variations of water soluble inorganic aerosol ions and its effects on regional climate. Hence the thesis addressed some of the unexplored areas in aerosol science. This study also suggests the need of continuous observation of aerosol over both spatial and temporal scale, which is essential to estimate their effects on earth's climate.

碩士
國立高雄應用科技大學
高階經營管理研究所碩士在職專班
102
Auto mechanic industry is the emphasis on technical expertise, human resources, customer satisfaction and service quality, and has became competitively in recent years. Automobile maintenance depots want to have a competitive advantage and retain their customers, they must first train and retain excent staffs. Managers can effectively enhance staff's emotional through the right leadership style. They can shape the organization which with a mutual trust and helpness, and in turn, enhance employee’s loyalty and create a good repair quality service and customer satisfaction; finally, ultimately achieve performance improvement. Therefore, this study attempts to construct paternalistic leadership and organizational control as antecedents to explore their impact on organizational performance, and uses service innovation as the mediating variable. The questionnaire was used to conduct empirical research and total 300 valid questionnaires were collected from the staffs who working on automobile maintenance depots in southern Taiwan. The results reveal that paternalistic leadership, organizational control, service innovation have significant impact on organizational performance. Service innovation mediates the relation between oganization control and organizational performance. Therefore, the effect will be more visibly when organizations want to enhance employee’s contribution to organizational performance through service innovation. Based on the empirical results, this study suggests: First, give the employees the caring and kindness of authoritarian parents. Kindness and authoritarian are equally important. Second, cultivate the faith and good organizational culture of the organization. Rewards and punishments implement simultaneously. Third, adding new service factors, professional and services are in parallel. Fourth, train/retain staffs and enhance customer satisfaction.

Thesis (M.S.)--University of Wisconsin--Madison, 1994.
Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 73-78).

At the northern extent of the Cascadia subduction zone, the subducting Explorer and Juan de Fuca plates interact across a translational deformation zone, known as the Nootka fault zone. The Seafloor Earthquake Array Japan-Canada Cascadia Experiment (SeaJade) was designed to study this region. In two parts (SeaJade I and II, deployed from July – September 2010 and January – September 2014), seismic data from the SeaJade project has led to several important discoveries. Hypocenter distributions from SeaJade I and II indicate primary and secondary conjugate faults within the Nootka fault zone. Converted phase analysis and jointly determined seismic tomography with double-difference relocated hypocenters provide evidence to several velocity-contrasting interfaces seaward of the Cascadia subduction front at depths of ~4-6 km, ~6-9 km, ~11-14 km, and ~14-18 km, which have been interpreted as the top of the oceanic crust, upper/lower crust boundary, oceanic Moho, and the base of the highly fractured and seawater/mineral enriched veins within oceanic mantle. During SeaJade II, a MW 6.4 mainshock and subsequent aftershocks, known as the Nootka Sequence, highlighted a previously unidentified fault within the subducted Explorer plate. This fault reflects the geometry of the subducting plate, showing downward bending of the plate toward the northwest. This plate bend can be attributed to negative buoyancy from margin parallel mantle flow induced by intraslab tearing further northwest. Seismic tomography reinforces the conclusions drawn from the Nootka Sequence hypocenter distribution. Earthquakes from the entire SeaJade II catalogue reveal possible rotated paleo-faults, identifying the former extent of the Nootka fault zone from ~3.5 Ma.
Graduate