بحر تاسمان

Coordinates: 40°S 160°E / 40°S 160°E / -40; 160
(تم التحويل من بحر تاسمانيا)
بحر تاسمان
Tasman Sea
"The Ditch"
Locatie Tasmanzee.PNG
Location
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Tasman Sea.jpg
خريطة بحر تاسمان.
الموقعغرب المحيط الهادي
الاحداثيات40°S 160°E / 40°S 160°E / -40; 160
النوعبحر
بلدان الحوضأستراليا، نيوزيلندا
أقصى طول2,800 km (1,700 mi)
أقصى عرض2,200 km (1,400 mi)
مساحة السطح2,300,000 كم²
الجزرجزيرة لورد هوي، جزيرة نورفوك
المصطباتلورد هوي رايز
التجمعات السكنيةنيوكاسل, سيدني, وولونگونگ، هوبارت (أستراليا)
أوكلاند، ولينگتون، New Plymouth, Whanganui (نيوزيلندا)

بحر تاسمان Tasman Sea (بالماورية: Te Tai-o-Rehua.[1])، هو بحر هامشي في المحيط الهادي الجنوبي، يقع بين أستراليا ونيوزيلاندا. يصل عرضه إلى حوالي 2000 كم، ويمتد بطول 2.800 كم تقريباً، من الشمال إلى الجنوب. سمي البحر على اسم المستكشف الهولندي أبل يانسزون تاسمان، الذي كان أول أوروي مسجل يصل نيوزيلاندا وتاسمانيا. لاحقاً، أبحر المستكشف البريطاني الكابتن جيمس كوك بعمق في بحر تاسمان في سبعينيات القرن الثامن عشر كجزء من رحلته الاستكشافية الأولى.[2]

The Tasman Sea is informally referred to in both Australian and New Zealand English as the Ditch; for example, "crossing the Ditch" means travelling to Australia from New Zealand, or vice versa. The diminutive term "the Ditch" used for the Tasman Sea is comparable to referring to the North Atlantic Ocean as "the Pond".

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المناخ

The south of the sea is passed over by depressions going from west to east. The northern limit of these westerly winds is near to 40°S. During the southern winter, from April to October, the northern branch of these winds from the west changes its direction toward the north and goes up against trade winds. Hence, the sea receives frequent winds from the southwest during this period. In the Australian summer (from November to March), the southern branch of the trade winds goes up against west winds and produces further wind activity in the area.[3]


الجغرافيا

The Tasman Sea is 2,250 km (1,400 mi) wide and has an area of 2,300,000 km2 (890,000 sq mi).[4] The maximum depth of the sea is 5,943 m (19,498 ft).[5] The base of the sea is made up of globigerina ooze. A small zone of pteropod ooze is found to the south of New Caledonia and to the southern extent of 30°S, siliceous ooze can be found.[6]

Extent

The International Hydrographic Organization defines the limits of the Tasman Sea as:[7]

On the West A line from Gabo Island (near Cape Howe, 37°30'S) to the northeast point of East Sister Island (148°E), thence along the 148th meridian to Flinders Island; beyond this island a line running to the eastward of the Vansittart Shoals to [Cape] Barren Island, and from Cape Barren (the easternmost point of [Cape] Barren Island) to Eddystone Point (41°S) in Tasmania, thence along the east coast to South East Cape, the southern point of Tasmania.

On the North The parallel of 30°S from the Australian coast eastward as far as a line joining the east extremities of Elizabeth Reef and South East Rock (31°47′S 159°18′E / 31.783°S 159.300°E / -31.783; 159.300) then to the southward along this line to the South East Rock [an outlier of Lord Howe Island].

On the Northeast From the South East Rock to the north point of Three Kings Islands (34°10′S 172°10′E / 34.167°S 172.167°E / -34.167; 172.167), thence to North Cape in New Zealand.

On the East

On the Southeast A line running from South West Cape, Stewart Island, through the Snares (48°S, 166°30'E) to North West Cape, Auckland Island (50°30′S 166°10′E / 50.500°S 166.167°E / -50.500; 166.167), through this island to its southern point.

On the South A line joining the southern point of Auckland Island (50°55′S 166°0′E / 50.917°S 166.000°E / -50.917; 166.000) to South East Cape, the southern point of Tasmania.

Ridge

Smoke from the Black Saturday bushfires crosses the southern Tasman Sea

The Tasman Sea's midocean ridge developed between 85 and 55 million years ago as Australia and Zealandia broke apart during the breakup of supercontinent Gondwana. It lies roughly midway between the continental margins of Australia and Zealandia. Much of Zealandia is submerged, so the ridge runs much closer to the Australian coast than New Zealand's.[8]

Islands

The Tasman Sea features a number of midsea island groups, quite apart from coastal islands located near the Australian and New Zealand mainlands:

المسطحات المائية المتصلة

التيارات

The East Australian Current that commences its flow southwards in the tropics of the Coral Sea, near the eastern coast of Australia is the most energetic circulation feature in the south western Pacific Ocean and is a primary means of heat transport from the tropics to the middle latitudes between Australia and New Zealand.[13]:{{{1}}} The East Australian Current is a return of the westward-flowing Pacific Equatorial Current (Pacific South Equatorial Current).[14] At the juncture between the Tasman and Coral seas while the East Australian Current continues south in the western Tasman a branch flows east called the Tasman Front towards the north of New Zealand with most continuing eastward above New Zealand into the South Pacific Ocean.[14] It transpires that while predominantly the location of westerly wind stress is a factor in how far north the formation of the Tasman Front occurs, so is the presence of the New Zealand land mass, as the top of New Zealand defines the furtherest south that the Tasman Front can be split off by the westerly winds.[13]:1457,1467–8 A boundary current called the East Auckland Current goes down the west coast of the North Island and further south the East Cape Current, that has been diverted towards the South Island by the shapes of the Lord Howe Rise and southern east coast of the North island continues to the south.[13]:{{{1}}}[14] The East Australian Current south of Tasmania also is diverted west in the Subtropical Front which collides with the western moving Subantarctic front of the Antarctic Circumpolar Current.[14] The East Australian Current sheds eddies on its way south that move south-westward with some known as the Tasman Leakage making it as far westward as the Indian Ocean.[13]:{{{1}}}

الوحيش والنبيت

A deep-sea research ship, the RV Tangaroa, explored the sea and found 500 species of fish and 1300 species of invertebrates. The tooth of a megalodon, an extinct shark, was also found by researchers.[15]

التاريخ

In 1876, the first telegraph cable connecting Australia and New Zealand was laid in the Tasman Sea.[16] The telegraph cable was made obsolete in 1963 when the Commonwealth Pacific Cable, New Zealand's first international telephone cable, was completed.[17] Moncrieff and Hood were the first to attempt a trans-Tasman crossing by plane in January 1928. The aviators were never seen or heard of again. The first successful flight over the sea was accomplished by Charles Kingsford Smith and Charles Ulm later that year. The first person to row solo across the sea was Colin Quincey in 1977. The next successful solo crossing was completed by his son, Shaun Quincey, in 2010.[18]


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انظر أيضاً

المصادر

  1. ^ Rāwiri Taonui. Tapa whenua – naming places – Events, maps and European influences, Te Ara – the Encyclopedia of New Zealand, Ministry for Culture and Heritage. ISBN 978-0-478-18451-8. Updated 1 March 2009. Retrieved 24 February 2011
  2. ^ "Tasman Sea". Encyclopædia Britannica. Retrieved 19 September 2013.
  3. ^ Rotschi & Lemasson 1967, p. 54.
  4. ^ خطأ استشهاد: وسم <ref> غير صحيح؛ لا نص تم توفيره للمراجع المسماة EB
  5. ^ "Depth of the sea" (PDF). Retrieved 23 April 2018.
  6. ^ Rotschi & Lemasson 1967, p. 51.
  7. ^ "Limits of Oceans and Seas, 3rd edition" (PDF). International Hydrographic Organization. 1953. p. 36. Retrieved 28 December 2020.
  8. ^ Van Der Linden, Willem J.M (1969). "Extinct mid-ocean ridges in the Tasman sea and in the Western Pacific". Earth and Planetary Science Letters. 6 (6): 483–490. Bibcode:1969E&PSL...6..483V. doi:10.1016/0012-821X(69)90120-4.
  9. ^ "Lord Howe Island, Tasman Sea, Australia". volcano.oregonstate.edu. Retrieved 23 April 2018.
  10. ^ "Ball's Pyramid". Unusual Places. 5 September 2013. Retrieved 23 April 2018.
  11. ^ van der Linden, Willem J. M. (Jan 2012). "Morphology of the Tasman sea floor". New Zealand Journal of Geology and Geophysics. 13 (1): 282–291. doi:10.1080/00288306.1970.10428218.
  12. ^ "Mysterious ocean feature found in Tasman Sea". Australian Geographic (in الإنجليزية). 24 February 2012. Retrieved 23 April 2018.
  13. ^ أ ب ت ث Bull, C.Y.; Kiss, A.E.; van Sebille, E.; Jourdain, N.C.; England, M.H. (2018). "The role of the New Zealand Plateau in the Tasman Sea circulation and separation of the East Australian Current". Journal of Geophysical Research: Oceans. 123 (2): 1457–1470. Bibcode:2018JGRC..123.1457B. doi:10.1002/2017JC013412. hdl:1885/203237.}
  14. ^ أ ب ت ث Sutherland, R.; Dos Santos, Z.; Agnini, C.; Alegret, L.; Lam, A.R.; Westerhold, T.; Drake, M.K.; Harper, D.T.; Dallanave, E.; Newsam, C.; Cramwinckel, M.J. (2022). "Neogene mass accumulation rate of carbonate sediment across northern Zealandia, Tasman Sea, southwest Pacific". Paleoceanography and Paleoclimatology. 37 (2): e2021PA004294. Bibcode:2022PaPa...37.4294S. doi:10.1029/2021PA004294.:{{{1}}}
  15. ^ "Tasman Sea produces freaky species". CBC News. 30 June 2003. Retrieved 23 April 2018.
  16. ^ Mander, Neil (2011). "COMPAC Submarine Telephone Cable System". In La Roche, John (ed.). Evolving Auckland: The City's Engineering Heritage. Wily Publications. pp. 195–202. ISBN 9781927167038.
  17. ^ "Trans-Tasman Telegraph Cable Numbers 1 and 2". Engineering New Zealand. Retrieved 24 May 2023.
  18. ^ Anne Barrowclough (14 March 2010). "Kiwi becomes second person to row across the Tasman Sea". Times Online. Times Newspapers. Retrieved 28 September 2024.

وصلات خارجية

40°S 160°E / 40°S 160°E / -40; 160

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