|
Cyclone Aivu
Severe Tropical Cyclone Aivu was a powerful late-season tropical cyclone that caused extensive damage across parts of Queensland, Australia in April 1989. Meteorological history On 29 March 1989, a tropical disturbance developed near the Solomon Islands. Tracking slowly west-northwest, it eventually moved over the Louisiade Archipelago off the southeast tip of Papua New Guinea by 31 March. By this time, it was classified as a tropical low by the Regional Specialized Meteorological Center, Tropical Cyclone Warning Center in Port Moresby. The low subsequently turned south-southeast and intensified into a tropical cyclone on 1 April. Upon reaching cyclone strength, the storm was Tropical cyclone naming, assigned the name ''Aivu''. Concurrently, the Joint Typhoon Warning Center (JTWC) classified Aivu as ''Tropical Cyclone 23P'', also estimating winds to have reached gale-force. Tropical cyclone formation within Port Moresby's area of responsibility (AOR) is relatively u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Papua New Guinea
Papua New Guinea (abbreviated PNG; , ; tpi, Papua Niugini; ho, Papua Niu Gini), officially the Independent State of Papua New Guinea ( tpi, Independen Stet bilong Papua Niugini; ho, Independen Stet bilong Papua Niu Gini), is a country in Oceania that comprises the eastern half of the island of New Guinea and its offshore islands in Melanesia (a region of the southwestern Pacific Ocean north of Australia). Its capital, located along its southeastern coast, is Port Moresby. The country is the world's third largest island country, with an area of . At the national level, after being ruled by three external powers since 1884, including nearly 60 years of Australian administration starting during World War I, Papua New Guinea established its sovereignty in 1975. It became an independent Commonwealth realm in 1975 with Elizabeth II as its queen. It also became a member of the Commonwealth of Nations in its own right. There are 839 known languages of Papua New Guinea, one of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapid Deepening
In meteorology, rapid intensification is a situation where a tropical cyclone intensifies dramatically in a short period of time. The United States National Hurricane Center defines rapid intensification as an increase in the maximum sustained winds of a tropical cyclone of at least in a 24-hour period. Necessary conditions External In order for rapid intensification to occur, several conditions must be in place. Water temperatures must be extremely warm (near or above ), and water of this temperature must be sufficiently deep such that waves do not churn deeper cooler waters up to the surface. Wind shear must be low; when wind shear is high, the convection and circulation in the cyclone will be disrupted. Dry air can also limit the strengthening of tropical cyclones. Internal Usually, an anticyclone in the upper layers of the troposphere above the storm must also be present for extremely low surface pressures to develop. This is because air must be converging towards the low ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ayr, Queensland
Ayr is a rural town and locality in the Shire of Burdekin, Queensland, Australia. It is the centre of a sugarcane-growing region and the administrative centre for the Burdekin Shire Council. In the , the locality of Ayr had a population of 8,738 people. Geography Ayr is located south of Townsville on the Bruce Highway and away from the (smaller) town of Home Hill. It is north of Bowen and north of Mackay. Ayr is located near the delta of the Burdekin River. It is within the Burdekin Shire, which produces the most sugar cane per square kilometre in Australia, accessing underground water supplies and water from the Burdekin Dam to irrigate crops when rains fail. Mirrigan is a neighbourhood within the locality (). It takes its name from the former Mirrigan railway station () which was assigned by the Queensland Railways Department on 10 September 1914. It is an Aboriginal name meaning star. Parkside is a neighbourhood within the south-east of the town (). Ayr railway stati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Time In Australia
Australia uses three main time zones: Australian Western Standard Time (AWST; UTC+08:00), Australian Central Standard Time (ACST; UTC+09:30), and Australian Eastern Standard Time (AEST; UTC+10:00). Time is regulated by the individual state governments, some of which observe daylight saving time (DST). Australia's external territories observe different time zones. Standard time was introduced in the 1890s when all of the Australian colonies adopted it. Before the switch to standard time zones, each local city or town was free to determine its local time, called local mean time. Now, Western Australia uses Western Standard Time; South Australia and the Northern Territory use Central Standard Time; while New South Wales, Queensland, Tasmania, Victoria, Jervis Bay Territory, and the Australian Capital Territory use Eastern Standard Time. Daylight saving time (+1 hour) is used in jurisdictions in the south and south-east: South Australia, New South Wales, Victoria, Tasmania, Je ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coordinated Universal Time
Coordinated Universal Time or UTC is the primary time standard by which the world regulates clocks and time. It is within about one second of mean solar time (such as UT1) at 0° longitude (at the IERS Reference Meridian as the currently used prime meridian) and is not adjusted for daylight saving time. It is effectively a successor to Greenwich Mean Time (GMT). The coordination of time and frequency transmissions around the world began on 1 January 1960. UTC was first officially adopted as CCIR Recommendation 374, ''Standard-Frequency and Time-Signal Emissions'', in 1963, but the official abbreviation of UTC and the official English name of Coordinated Universal Time (along with the French equivalent) were not adopted until 1967. The system has been adjusted several times, including a brief period during which the time-coordination radio signals broadcast both UTC and "Stepped Atomic Time (SAT)" before a new UTC was adopted in 1970 and implemented in 1972. This change also a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inkerman, Queensland
Inkerman is a rural town and locality in the Shire of Burdekin, Queensland, Australia. In the , the locality of Inkerman had a population of 145 people. Geography Inkerman bounded on the west by the Bruce Highway and the North Coast railway line. Although most of the locality is flat land (0- above sea level, Inkerman has the following mountains: * Charlies Hill () * Mount Alma () * Mount Inkerman () The predominant land use is growing sugarcane with some grazing on native vegetation. History Inkerman Post Office opened by 1915 as a receiving office (known for a time as Inkerman Siding) and closed in 1975. Inkerman State School opened on 24 November 1915. It closed on 31 December 1974. It was at 22 Wallace Road (). At the 2006 census, Inkerman had a population of 520. In the 2011 census, Inkerman had a population of 364 people. In the the locality of Inkerman had a population of 145 people. Heritage listings Inkerman has a number of heritage-listed sites, inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Home Hill, Queensland
Home Hill is a rural town and locality in the Shire of Burdekin, Queensland, Australia. In the , the locality of Home Hill had a population of 2,954 people. At the delta of the Burdekin River, it is a sugarcane growing area with underground water supplies to irrigate crops. Badilla is a neighbourhood in the south of the locality (). Geography Home Hill lies approximately south of Townsville and north of the state capital Brisbane on the Bruce Highway. It is a part of the Shire of Burdekin which includes the town of Ayr to the north. Both towns are governed by the Burdekin Shire Council. The Burdekin River forms the locality's north-western boundary. The town is situated centrally within the locality surrounded by crop farming. The Bruce Highway passes through the town from the south-east (Fredericksfield / Inkerman) to the north-west crossing the river via the Burdekin Bridge to McDesme en route to Ayr. The North Coast railway line runs immediately parallel and west of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landfall (meteorology)
Landfall is the event of a storm moving over land after being over water. More broadly, and in relation to human travel, it refers to 'the first land that is reached or seen at the end of a journey across the sea or through the air, or the fact of arriving there. Tropical cyclone A tropical cyclone is classified as making landfall when the center of the storm moves across the coast; in a relatively strong tropical cyclone, this is when the eye moves over land. This is where most of the damage occurs within a mature tropical cyclone, such as a typhoon or hurricane, as most of the damaging aspects of these systems are concentrated near the eyewall. Such effects include the peaking of the storm surge, the core of strong winds coming ashore, and heavy flooding rains. These coupled with high surf can cause major beach erosion. When a tropical cyclone makes landfall, the eye usually closes in upon itself due to negative environmental factors over land, such as friction with th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dvorak Technique
The Dvorak technique (developed between 1969 and 1984 by Vernon Dvorak) is a widely used system to estimate tropical cyclone intensity (which includes tropical depression, tropical storm, and hurricane/typhoon/intense tropical cyclone intensities) based solely on visible and infrared satellite images. Within the Dvorak satellite strength estimate for tropical cyclones, there are several visual patterns that a cyclone may take on which define the upper and lower bounds on its intensity. The primary patterns used are curved band pattern (T1.0-T4.5), shear pattern (T1.5–T3.5), central dense overcast (CDO) pattern (T2.5–T5.0), central cold cover (CCC) pattern, banding eye pattern (T4.0–T4.5), and eye pattern (T4.5–T8.0). Both the central dense overcast and embedded eye pattern use the size of the CDO. The CDO pattern intensities start at T2.5, equivalent to minimal tropical storm intensity (40 mph, 65 km/h). The shape of the central dense overcast is also con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inches Of Mercury
Inch of mercury (inHg and ″Hg) is a non- SI unit of measurement for pressure. It is used for barometric pressure in weather reports, refrigeration and aviation in the United States. It is the pressure exerted by a column of mercury in height at the standard acceleration of gravity. Conversion to metric units depends on the temperature of mercury, and hence its density; typical conversion factors are: In older literature, an "inch of mercury" is based on the height of a column of mercury at .Barry N. Taylor, ''Guide for the Use of the International System of Units (SI),'' 1995, NIST Special Publication 811, Appendix /ref> :1 inHg60 °F = In Imperial units: 1 inHg60 °F = 0.489 771 Pounds per square inch, psi, or 2.041 771 inHg60 °F = 1 psi. Applications Aircraft and automobiles Aircraft altimeters measure the relative pressure difference between the lower ambient pressure at altitude and a calibrated reading on the ground. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pascal (unit)
The pascal (symbol: Pa) is the unit of pressure in the International System of Units (SI), and is also used to quantify internal pressure, stress, Young's modulus, and ultimate tensile strength. The unit, named after Blaise Pascal, is defined as one newton per square metre and is equivalent to 10 barye (Ba) in the CGS system. The unit of measurement called standard atmosphere (atm) is defined as 101,325 Pa. Common multiple units of the pascal are the hectopascal (1 hPa = 100 Pa), which is equal to one millibar, and the kilopascal (1 kPa = 1000 Pa), which is equal to one centibar. Meteorological observations typically report atmospheric pressure in hectopascals per the recommendation of the World Meteorological Organization, thus a standard atmosphere (atm) or typical sea-level air pressure is about 1013 hPa. Reports in the United States typically use inches of mercury or millibars (hectopascals). In Canada these reports are given in kilopascal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bar (unit)
The bar is a metric unit of pressure, but not part of the International System of Units (SI). It is defined as exactly equal to 100,000 Pa (100 kPa), or slightly less than the current average atmospheric pressure on Earth at sea level (approximately 1.013 bar). By the barometric formula, 1 bar is roughly the atmospheric pressure on Earth at an altitude of 111 metres at 15 °C. The bar and the millibar were introduced by the Norwegian meteorologist Vilhelm Bjerknes, who was a founder of the modern practice of weather forecasting. The International System of Units, despite previously mentioning the bar, now omits any mention of it.. The bar has been legally recognised in countries of the European Union since 2004.British Standard BS 350:2004 ''Conversion Factors for Units''. The US National Institute of Standards and Technology (NIST) deprecates its use except for "limited use in meteorology" and lists it as one of several units that "must not be introduced ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
-01(1).jpg "Click for more on -> Home Hill, Queensland")
