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Lake Grassmere
Lake Grassmere / Kapara Te Hau is a New Zealand waituna-type lagoon in the northeastern South Island, close to Cook Strait. The lake is used for the production of salt. Geography Lake Grassmere, south of Blenheim and south of the mouth of the Awatere River, is a shallow lagoon protected from the open sea by a single barrier beach covered by sand dunes. It is on the north-easterly extension of the Ward depression. Covering an area of , it has no natural inflow and is prone to strong warm winds. Close to the sea, it also has a very high salinity. Because of these geographical characteristics, it is ideal for natural salt extraction. Grassmere has been divided into solar evaporation ponds. Seawater is pumped in, and moved between ponds over several months, increasing in salinity with each successive evaporation period. As salinity increases, crystallised salt forms and is extracted. Grassmere's area varies between ; this maximum is attained only in rare floods. The waters ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marlborough Region
Marlborough District or the Marlborough Region (, or ''Tauihu''), commonly known simply as Marlborough, is one of the 16 regions of New Zealand, located on the northeast of the South Island. Marlborough is a unitary authority, both a district and a region. Marlborough District Council is based at Blenheim, the largest town. The unitary region has a population of . Marlborough is known for its dry climate, the Marlborough Sounds, and Sauvignon blanc wine. It takes its name from the earlier Marlborough Province, which was named after General The 1st Duke of Marlborough, an English general and statesman. Geography Marlborough's geography can be roughly divided into four sections. The south and west sections are mountainous, particularly the southern section, which rises to the peaks of the Kaikōura Ranges. These two mountainous regions are the final northern vestiges of the ranges that make up the Southern Alps, although that name is rarely applied to mountains this far no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaiapoi
Kaiapoi is a town in the Waimakariri District of the Canterbury region, in the South Island of New Zealand. The town is located approximately 17 kilometres north of central Christchurch, close to the mouth of the Waimakariri River. It is considered a satellite town of Christchurch and is part of the Christchurch functional urban area. Kaiapoi is known for its substantial precolonial pā, established by powerful Kāi Tahu nobleman Tūrākautahi. One of the sons of the powerful rangatira Tūāhuriri, Tūrākautahi exerted vast influence over historical Ōtautahi (the site of modern-day Christchurch). His family controlled the pā he established in the area until it was sacked in 1830. The pā was one of the greatest centre of knowledge, economics and natural resources, with a highly complex social structure. All decisions were undertaken by the nobility, who consulted with highly skilled tohunga. In selecting the pā site, Tūrākautahi determined that food ( kai) would need ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lagoons Of New Zealand
A lagoon is a shallow body of water separated from a larger body of water by a narrow landform, such as reefs, barrier islands, barrier peninsulas, or isthmuses. Lagoons are commonly divided into ''coastal lagoons'' (or ''barrier lagoons'') and ''atoll lagoons''. They have also been identified as occurring on mixed-sand and gravel coastlines. There is an overlap between bodies of water classified as coastal lagoons and bodies of water classified as estuaries. Lagoons are common coastal features around many parts of the world. Definition and terminology Lagoons are shallow, often elongated bodies of water separated from a larger body of water by a shallow or exposed shoal, coral reef, or similar feature. Some authorities include fresh water bodies in the definition of "lagoon", while others explicitly restrict "lagoon" to bodies of water with some degree of salinity. The distinction between "lagoon" and "estuary" also varies between authorities. Richard A. Davis Jr. restricts "l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ngāi Tahu Claims Settlement Act 1998
The Ngāi Tahu Claims Settlement Act 1998 is an act of Parliament passed in New Zealand relating to Ngāi Tahu, the principal Māori (tribe) of the South Island. It was negotiated in part by Henare Rakiihia Tau. The documents in relation to the Ngāi Tahu land settlement claim are held at Tūranga, the main public library in Christchurch. It is administered by the Office of Treaty Settlements. Schedule 96 "Alteration of place names" contains a list of places that received official name changes to dual English and Māori names such as Aoraki / Mount Cook. See also *Treaty of Waitangi The Treaty of Waitangi ( mi, Te Tiriti o Waitangi) is a document of central importance to the history, to the political constitution of the state, and to the national mythos of New Zealand. It has played a major role in the treatment of the M ... References {{Reflist External linksText of the Act Statutes of New Zealand 1998 in New Zealand law Ngāi Tahu Treaty of Waitangi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Dual Place Names In New Zealand
A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College, an undergraduate division of the Jewish Theological Seminary of America * SC Germania List, German rugby union club Other uses * Angle of list, the leaning to either port or starboard of a ship * List (information), an ordered collection of pieces of information ** List (abstract data type), a method to organize data in computer science * List on Sylt, previously called List, the northernmost village in Germany, on the island of Sylt * ''List'', an alternative term for ''roll'' in flight dynamics * To ''list'' a building, etc., in the UK it means to designate it a listed building that may not be altered without permission * Lists (jousting), the barriers used to designate the tournament area where medieval knights jousted * ''The Book of Lists'', an American series of books with unusual lists See also * The List (other) * Listing (di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doublet Earthquake
__NOTOC__ In seismology, doublet earthquakes – and more generally, multiplet earthquakes – were originally identified as multiple earthquakes with nearly identical waveforms originating from the same location. They are now characterized as single earthquakes having two (or more) main shocks of similar magnitude, sometimes occurring within tens of seconds, but sometimes separated by years. The similarity of magnitude – often within 0.4 magnitude – distinguishes multiplet events from aftershocks, which start at about 1.2 magnitude less than the parent shock ( Båth's law) and decrease in magnitude and frequency according to known laws. Doublet/multiplet events also have nearly identical seismic waveforms, as they come from the same rupture zone and stress field, whereas aftershocks, being peripheral to the main rupture, typically reflect more diverse circumstances of origin. Multiplet events overlap in their focal fields (rupture zones), which can be up 100 kilometers across ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2013 Seddon Earthquake
The 2013 Seddon earthquake measured 6.5 on the scale and was centred in New Zealand's Cook Strait, around east of the town of Seddon in Marlborough. The earthquake struck at 5:09:30 pm on Sunday 21 July 2013 (05:09 UTC) at a depth of , according to Geonet. The United States Geological Survey also measured the quake at 6.5, at a depth of . The quake caused moderate damage in the wider Marlborough area and Wellington, the nation's capital city north of the epicentre. Only minor injuries were reported. Several aftershocks occurred during 21–29 July. The Seddon earthquake is considered the first of an earthquake doublet, with a second earthquake of similar magnitude occurring on 16 August 2013. Earthquake Foreshocks The earthquake was preceded by a series of foreshocks, the largest of which had a magnitude of 5.7. Below is a list of all foreshocks magnitudes 5.0 and above that occurred in the region between 19 July 2013 and 21 July 2013. Aftershocks The earthquak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2013 Lake Grassmere Earthquake
The 2013 Lake Grassmere earthquake was a magnitude 6.6 earthquake that occurred at 2:31:05 pm (NZST) on Friday 16 August 2013. The epicentre was located about 10 km south-east of Seddon, under Lake Grassmere, with a focal depth of 8 km. The earthquake caused significant land damage in the local area, with landslips blocking roads, including the main highway between Blenheim and Christchurch. Buildings in Seddon were damaged, with some being declared uninhabitable. The earthquake was widely felt in both the North and South Islands of New Zealand. Earthquake This earthquake is considered to be a doublet of a magnitude 6.5 earthquake that occurred in Cook Strait on 21 July 2013 and is thought to have occurred on part of the same complex of faults. It started its own aftershock sequence, with several magnitude 5 and one magnitude 6 earthquakes occurring in the first few hours after the main shock. Aftershocks The earthquake generated a significant series of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silicon Dioxide
Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula , most commonly found in nature as quartz and in various living organisms. In many parts of the world, silica is the major constituent of sand. Silica is one of the most complex and most abundant families of materials, existing as a compound of several minerals and as a synthetic product. Notable examples include fused quartz, fumed silica, silica gel, opal and aerogels. It is used in structural materials, microelectronics (as an electrical insulator), and as components in the food and pharmaceutical industries. Structure In the majority of silicates, the silicon atom shows tetrahedral coordination, with four oxygen atoms surrounding a central Si atomsee 3-D Unit Cell. Thus, SiO2 forms 3-dimensional network solids in which each silicon atom is covalently bonded in a tetrahedral manner to 4 oxygen atoms. In contrast, CO2 is a linear molecule. The starkly different structures of the dioxid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goitre
A goitre, or goiter, is a swelling in the neck resulting from an enlarged thyroid gland. A goitre can be associated with a thyroid that is not functioning properly. Worldwide, over 90% of goitre cases are caused by iodine deficiency. The term is from the Latin ''gutturia'', meaning throat. Most goitres are not cancerous (benign), though they may be potentially harmful. Signs and symptoms A goitre can present as a palpable or visible enlargement of the thyroid gland at the base of the neck. A goitre, if associated with hypothyroidism or hyperthyroidism, may be present with symptoms of the underlying disorder. For hyperthyroidism, the most common symptoms are associated with adrenergic stimulation: tachycardia (increased heart rate), palpitations, nervousness, tremor, increased blood pressure and heat intolerance. Clinical manifestations are often related to hypermetabolism, (increased metabolism), excessive thyroid hormone, an increase in oxygen consumption, metabolic changes in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iodine
Iodine is a chemical element with the symbol I and atomic number 53. The heaviest of the stable halogens, it exists as a semi-lustrous, non-metallic solid at standard conditions that melts to form a deep violet liquid at , and boils to a violet gas at . The element was discovered by the French chemist Bernard Courtois in 1811 and was named two years later by Joseph Louis Gay-Lussac, after the Ancient Greek 'violet-coloured'. Iodine occurs in many oxidation states, including iodide (I−), iodate (), and the various periodate anions. It is the least abundant of the stable halogens, being the sixty-first most abundant element. As the heaviest essential mineral nutrient, iodine is required for the synthesis of thyroid hormones. Iodine deficiency affects about two billion people and is the leading preventable cause of intellectual disabilities. The dominant producers of iodine today are Chile and Japan. Due to its high atomic number and ease of attachment to organic compound ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iodised Salt
Iodised salt ( also spelled iodized salt) is table salt mixed with a minute amount of various salts of the element iodine. The ingestion of iodine prevents iodine deficiency. Worldwide, iodine deficiency affects about two billion people and is the leading preventable cause of intellectual and developmental disabilities. Deficiency also causes thyroid gland problems, including endemic goitre. In many countries, iodine deficiency is a major public health problem that can be cheaply addressed by purposely adding small amounts of iodine to the sodium chloride salt. Iodine is a micronutrient and dietary mineral that is naturally present in the food supply in some regions, especially near sea coasts but is generally quite rare in the Earth's crust since iodine is a so-called heavy element, and abundance of chemical elements generally declines with greater atomic mass. Where natural levels of iodine in the soil are low and the iodine is not taken up by vegetables, iodine added to salt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
