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Clyde Dam
The Clyde Dam, New Zealand's third-largest hydroelectric dam, is built on the Clutha River / Mata-Au near the town of Clyde, New Zealand, Clyde. It is owned and operated by Contact Energy. History There was considerable controversy when the dam was planned because it would flood many houses and orchards upstream at Cromwell, New Zealand, Cromwell, as well as the scenic Cromwell Gorge, which was a highlight of the then young but growing New Zealand tourism industry. Construction also required replacement of a stretch of highway and the closure of the Otago Central Railway beyond Clyde, though materials for the dam would provide significant traffic for the rest of the line which was experiencing a drop in freight tonnage. To mitigate these problems, the Third Labour Government of New Zealand, Kirk Labour government decided a low dam should be built at Clyde. This decision was overturned by the following Third National Government of New Zealand, National government, who preferred a h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clyde, New Zealand
Clyde, formerly Dunstan, is a small town in Central Otago, New Zealand with a population of in It is located on the Clutha River, between Cromwell and Alexandra. Clyde grew up around the former settlement of Dunstan during the Central Otago goldrush of the 1860s. The town could once claim to be the most populous in New Zealand during the height of gold fever. The town's post office (and thus the town) was officially renamed from Dunstan to Clyde on 22 May 1865, after Lord Clyde. More recently the town has been known for the Clyde Dam, a giant hydroelectric dam at the north end of the town, behind which lies Lake Dunstan. The Clutha River is the swiftest river (per volume) in the southern hemisphere. The river then runs to the Roxburgh Dam before finally meeting the sea at Balclutha. The town is a popular holiday spot. It lies at the western end of the Otago Central Rail Trail. The Otago Central Branch Railway originally terminated at Cromwell, but this section of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aramoana
Aramoana is a small coastal settlement north of Dunedin on the South Island of New Zealand. The settlement's permanent population in the 2001 Census was 261. Supplementing this are seasonal visitors from the city who occupy cribs. The name ''Aramoana'' is Māori for "pathway of the sea". It was founded by the Otago Harbour Board and established in the 1880s as a pilot station for navigation around the mouth of the Otago Harbour. This area grew into a small farming village. In the 1950s, the town became popular as a beach resort and a rural life village due to the construction of a mole to inhibit the spread of tidal sands into the mouth of Otago Harbour and was surveyed and amalgamated as a suburb of Port Chalmers borough. It is the site of the Aramoana massacre, New Zealand's second deadliest criminal shooting, on 13 and 14 November 1990. Location and natural environment The settlement is located on a sand dune spit at the mouth of the Otago Harbour, opposite the end of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vicki Hyde
Vicki Cathryn Hyde (née Spong, born 1962) is a New Zealand science writer and editor, and former chair-entity of the New Zealand Skeptics. She is co-owner with her husband Peter of a New Zealand-based software and web development company, Webcentre Ltd. Hyde resides in Christchurch. She gained a BSc in psychology and a BA in sociology from University of Canterbury and represented her alma mater in the television series University Challenge in 1980. She was the team manager the following year in 1981, when Canterbury won the title. She was a founder of the '' KAOS'' (Killing As Organised Sport) club at the University of Canterbury in 1981. Following her studies she lived in Japan before returning to New Zealand in 1989. Hyde is best known as the managing editor of the popular science portal site ScitechDaily, which she began as a sister site to Arts & Letters Daily soon after the latter was launched in 1998 by her friend, Denis Dutton. Hyde's company also worked with Dutton ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cement
A cement is a binder, a chemical substance used for construction that sets, hardens, and adheres to other materials to bind them together. Cement is seldom used on its own, but rather to bind sand and gravel ( aggregate) together. Cement mixed with fine aggregate produces mortar for masonry, or with sand and gravel, produces concrete. Concrete is the most widely used material in existence and is behind only water as the planet's most-consumed resource. Cements used in construction are usually inorganic, often lime or calcium silicate based, which can be characterized as hydraulic or the less common non-hydraulic, depending on the ability of the cement to set in the presence of water (see hydraulic and non-hydraulic lime plaster). Hydraulic cements (e.g., Portland cement) set and become adhesive through a chemical reaction between the dry ingredients and water. The chemical reaction results in mineral hydrates that are not very water-soluble and so are quite durable i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fault (geology)
In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements. Large faults within Earth's crust result from the action of plate tectonic forces, with the largest forming the boundaries between the plates, such as the megathrust faults of subduction zones or transform faults. Energy release associated with rapid movement on active faults is the cause of most earthquakes. Faults may also displace slowly, by aseismic creep. A ''fault plane'' is the plane that represents the fracture surface of a fault. A '' fault trace'' or ''fault line'' is a place where the fault can be seen or mapped on the surface. A fault trace is also the line commonly plotted on geologic maps to represent a fault. A ''fault zone'' is a cluster of parallel faults. However, the term is also used for the zone of crushed rock along a single fault. Prolonged motion along closely spaced faults can blur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earthquake
An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves. Earthquakes can range in intensity, from those that are so weak that they cannot be felt, to those violent enough to propel objects and people into the air, damage critical infrastructure, and wreak destruction across entire cities. The seismic activity of an area is the frequency, type, and size of earthquakes experienced over a particular time period. The seismicity at a particular location in the Earth is the average rate of seismic energy release per unit volume. The word ''tremor'' is also used for non-earthquake seismic rumbling. At the Earth's surface, earthquakes manifest themselves by shaking and displacing or disrupting the ground. When the epicenter of a large earthquake is located offshore, the seabed may be displaced sufficiently to cause a tsunami. Earthquakes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microfracture
Fracture mechanics is the field of mechanics concerned with the study of the propagation of cracks in materials. It uses methods of analytical solid mechanics to calculate the driving force on a crack and those of experimental solid mechanics to characterize the material's resistance to fracture. Theoretically, the stress ahead of a sharp crack tip becomes infinite and cannot be used to describe the state around a crack. Fracture mechanics is used to characterise the loads on a crack, typically using a single parameter to describe the complete loading state at the crack tip. A number of different parameters have been developed. When the plastic zone at the tip of the crack is small relative to the crack length the stress state at the crack tip is the result of elastic forces within the material and is termed linear elastic fracture mechanics (LEFM) and can be characterised using the stress intensity factor K. Although the load on a crack can be arbitrary, in 1957 G. Irwin fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megawatts
The watt (symbol: W) is the unit of power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantify the rate of energy transfer. The watt is named after James Watt (1736–1819), an 18th-century Scottish inventor, mechanical engineer, and chemist who improved the Newcomen engine with his own steam engine in 1776. Watt's invention was fundamental for the Industrial Revolution. Overview When an object's velocity is held constant at one metre per second against a constant opposing force of one newton, the rate at which work is done is one watt. : \mathrm In terms of electromagnetism, one watt is the rate at which electrical work is performed when a current of one ampere (A) flows across an electrical potential difference of one volt (V), meaning the watt is equivalent to the volt-ampere (the latter unit, however, is used for a different quantity from the real power of an electrical circuit). : \m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volt-ampere
A volt-ampere ( SI symbol: V⋅A or V A, simplified as VA) is the unit for the apparent power in an electrical circuit. The apparent power equals the product of root mean square voltage (in volts) and root mean square current (in amperes). Volt-amperes are usually used for analyzing alternating current (AC) circuits. In direct current (DC) circuits, this product is equal to the real power, in watts. The volt-ampere is dimensionally equivalent to the watt: in SI units, 1 V⋅A = 1 W). VA rating is most used for generators and transformers (and other power handling equipment) where loads may be reactive (inductive or capacitive). Formulation For a simple electrical circuit running on direct current, the electrical current and voltage are constant. In that case, the real power (''P'', measured in watts) is the product of the electrical current (''I'', measured in amperes) and the voltage from one side of the circuit to the other (''V'', measured in volts): ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clyde Dam Expansion Joint, Otago, NZ
Clyde may refer to: People * Clyde (given name) * Clyde (surname) Places For townships see also Clyde Township Australia * Clyde, New South Wales * Clyde, Victoria * Clyde River, New South Wales Canada * Clyde, Alberta * Clyde, Ontario, a town in North Dumfries, Regional Municipality of Waterloo, Ontario * Clyde Township, a geographic township in the municipality of Dysart et al, Ontario * Clyde River, Nunavut New Zealand * Clyde, New Zealand ** Clyde Dam Scotland * Clydeside * River Clyde * Firth of Clyde United States * Clyde, California, a CDP in Contra Costa County * Clyde, Georgia * Clyde Township, Whiteside County, Illinois * Clyde, Iowa * Clyde, Kansas * Clyde, Michigan * Clyde Township, Allegan County, Michigan * Clyde Township, St. Clair County, Michigan * Clyde, New Jersey * Clyde, New York * Clyde, North Carolina * Clyde, North Dakota * Clyde, Ohio ** Clyde cancer cluster * Clyde, Pennsylvania * Clyde, South Carolina * Clyde, Texas * Clyde River (Verm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Resource Management Act 1991
The Resource Management Act (RMA) passed in 1991 in New Zealand is a significant, and at times, controversial Act of Parliament. The RMA promotes the sustainable management of natural and physical resources such as land, air and water. New Zealand's Ministry for the Environment describes the RMA as New Zealand's principal legislation for environmental management. The RMA and the decisions made under it by district and regional councils and in courts affect both individuals and businesses in large numbers, and often in very tangible ways. The Act has variously been attacked for being ineffective in managing adverse environmental effects, or overly time-consuming and expensive and concerned with bureaucratic restrictions on legitimate economic activities. In February 2021, the Government confirmed that the RMA is to be replaced by three separate acts. These will be the Natural and Built Environment Bill (NBA), the Strategic Planning Bill (SPA), and the Climate Change Adaptat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Social Credit Party (New Zealand)
The New Zealand Social Credit Party (sometimes called "Socred") is a political party which served as the country's third party from the 1950s through into the 1980s. The party held a number of seats in the New Zealand House of Representatives, although never more than two at a time. It renamed itself the New Zealand Democratic Party from 1985 to 2018, and was for a time part of the Alliance from 1991 to 2002. It returned to the Social Credit name in 2018. The party is based on the ideas of social credit, an economic theory established by Major C. H. Douglas. Social Credit movements also existed in Australia (''see:'' Douglas Credit Party & Australian League of Rights), Canada (''see:'' Social Credit Party of Canada), and the United Kingdom (''see:'' UK Social Credit Party) although the relationship between those movements and the New Zealand movement was not always amicable. History The Social Credit Association The Social Credit Political League was formed in 1953 out of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
