| 翻訳と辞書 |
Cyclone Tia
Severe Tropical Cyclone Tia was the first of six tropical cyclones to affect Vanautu, during the 1991–92 South Pacific cyclone season. The system was first noted within the South Pacific Convergence Zone as a small tropical depression on November 13, to the northeast of the Solomon Islands. Over the next few days the system gradually developed further within an area of light winds in the upper troposphere, before it was named Tia early on November 16. Later that day due to a developing northerly steering current, the system slowed down and undertook a small anticlockwise loop before starting to move towards the southwest and rapidly intensify. After rapidly intensifying throughout November 16 and 17, Tia passed within of the Solomon Island: Anuta at around 1800 UTC on November 17, before passing near Tikopia Island six hours later. As Tia moved near Tikopia, the system reached its peak intensity as a category 3 severe tropical cyclone, with 10 – minute sustained windspeeds of .
During November 18, due to cooler waters and increased wind shear, Tia started to weaken as it moved southwards under the influence of a strengthening upper-level northerly wind flow. Over the next 24 hours, the system continued to move southwards and passed within of Vanuatu's Banks Islands, while gradually weakening further. Tia subsequently degenerated into a tropical depression during November 20, before it was last noted the next day as it crossed a part of its former track, where it had been producing hurricane force windspeeds a few days earlier. While it was active Tia directly affected the Solomon Islands and Vanuatu, while it indirectly affected Kiribati. The Solomon Island of Tikopia was the worst affected island, after over 1000 people were left homeless on the island and 90% of all dwellings were completely destroyed. Damage was minimal in Vanuatu, and was mainly confined to crops and fruit trees on the Banks and Torres Islands. After this usage of the name Tia, the name was retired and withdrawn from use on the tropical cyclone naming lists.
==Meteorological history==
On November 13, the Fiji Meteorological Service's Nadi Tropical Cyclone Warning Center started to monitor a small tropical depression, that had developed within the South Pacific Convergence Zone to the northeast of the Solomon Islands. During that day the system moved towards the south-west, before it sharply turned towards the east early the next day, as an equatorial westerly wind burst took place to the north of the cyclone. During that day the depression gradually developed further within an area of light winds in the upper troposphere and sea-surface temperatures of over .〔 Early on November 15, the United States Joint Typhoon Warning Center started to issue advisories on the depression and designated it as Tropical Cyclone 03P, after it had become equivalent to a tropical storm with estimated 1 - minute sustained windspeeds of . During that day the system's upper level outflow characteristics became more favourable for further development, before TCWC Nadi named the system Tia early the next day after the system had developed into a category one tropical cyclone on the Australian tropical cyclone intensity scale. When it was named, Tia moving slowly and was located about to the northeast of the Santa Cruz Islands, before the JTWC reported at around 0600 UTC that Tia had become equivalent to a category one hurricane on the Saffir–Simpson hurricane scale with 1-minute sustained windspeeds of 120 km/h (75 mph).〔 Around this time, because of a developing northerly steering current, Tia slowed down and undertook a small anticlockwise loop, before starting to move towards the southwest and rapidly intensify.〔
After rapidly intensifying throughout November 16 and 17, Tia passed within of Anuta Island at around 1800 UTC on November 17, before passing near Tikopia Island six hours later.〔 As Tia moved near Tikopia, TCWC Nadi reported that the system had reached its peak intensity as a category 3 severe tropical cyclone, with sustained windspeeds of 140 km/h (85 mph).〔 The JTWC followed suit six hours later and reported that the cyclone had peaked as a category 2 equivalent hurricane with sustained windspeeds of 175 km/h (110 mph).〔 By 1800 UTC on November 18, due to cooler waters and increased wind shear, Tia started to weaken as it moved southwards under the influence of a strengthening upper-level northerly wind flow.〔〔 Over the next 24 hours, the system continued to move southwards and passed within of Vanuatu's Banks Islands, while gradually weakening further before moving to the southeast under the influence of strong upper level northwesterlies.〔 By 0000 UTC on November 20, Tia had weakened into a category one tropical cyclone on the Australian Scale and became slow moving while located about to the east of Port Villa in Vanautu.〔〔 During that day the system turned and moved towards the northwest, before TCWC Nadi reported later that day at 1200 UTC, that Tia had weakened below tropical cyclone intensity.〔 However, the JTWC monitored the system as a tropical cyclone for another 24 hours, before issuing their final advisory on the system at 1200 UTC as the system had weakened below tropical cyclone intensity.〔〔 Tia was subsequently last noted by TCWC Nadi and JTWC later that day as it crossed a part of its former track, where it had been producing hurricane force windspeeds a few days earlier.〔〔〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Cyclone Tia」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|