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New Moor

Coordinates: 21°37′00″N 89°08′30″E / 21.6167°N 89.1417°E / 21.6167; 89.1417
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South Talpatti
Native name:
দক্ষিণ তালপট্টি
[mapframe not available on SimWiki]
Interactive map of South Talpatti
Other namessouth talapatti Island, New Moore, Purbasha Island
Geography
LocationBay of Bengal
Coordinates21°37′00″N 89°08′30″E / 21.6167°N 89.1417°E / 21.6167; 89.1417
ArchipelagoSundarbans
Area0.01 km2 (0.0039 sq mi)
Highest elevation2 m (7 ft)
Administration
Bangladesh
Also claimed by
India (sovereignty affirmed by Permanent Court of Arbitration, 2014)
Demographics
Population0
Additional information
Emerged after the 1970 Bhola cyclone; disappeared c. March 2010 due to erosion and sea level rise

South Talpatti (Bengali: দক্ষিণ তালপট্টি, romanized: Dokkhin Talpotti), also known as New Moore (Bengali: নতুন মুর, romanized: Notun Moor) and Purbasha Island (Bengali: পূর্বাশা দ্বীপ), was a small uninhabited offshore sandbar island in the Bay of Bengal, off the coast of the Ganges-Brahmaputra delta region.[1] It emerged in the Bay of Bengal in the aftermath of the Bhola cyclone in November 1970, and disappeared around March 2010.[2]

Although the island was uninhabited and there were no permanent settlements or stations located on it, both India and Bangladesh claimed sovereignty over it. There has been speculation over the existence of oil and natural gas in the region.[3] The issue of sovereignty was also a part of the larger dispute over the Radcliffe Award methodology of settling the maritime boundary between the two countries.[1] The matter was resolved on 7 July 2014, when the Permanent Court of Arbitration (PCA) delivered a final, binding verdict in the Bay of Bengal Maritime Boundary Arbitration between Bangladesh and India, awarding Bangladesh the bulk of the disputed maritime area while recognizing India's sovereignty over the island itself.[4]

Geography and location

The island is believed to have formed through sediment deposition following the 1970 Bhola cyclone.[5] It was located only two kilometres (1.2 miles) from the mouth of the Hariabhanga River, immediately south of the international border river separating Satkhira district of Bangladesh and the South 24 Parganas district of West Bengal, India, at 21°37′00″N 89°08′30″E.

The emergence of the island was discovered by an American satellite in 1974, which showed it to have an area of 2,500 square metres (27,000 sq ft). Later, various remote sensing surveys showed that the island had expanded gradually to an area of about 10,000 square metres (110,000 sq ft) at low tide, including a number of ordinarily submerged shoals. The highest elevation of the island never exceeded two metres (6 feet 7 inches) above sea level.[6]

Dispute

The island was claimed by both Bangladesh and India, although neither country established any permanent settlement there because of the island's geological instability based on silt deposits in a delta which floods every year. India had reportedly hoisted the Indian flag on the island in 1981 and established a temporary base of Border Security Force (BSF), regularly visiting with its Water Wing gunboats.[7][8]

According to the Radcliffe Award (establishing the East Pakistan and India boundary in 1947), the 'mid-channel flow' principle or thalweg doctrine is generally recognized as the international boundary on river borders between these two countries. The middle line of the mid-channel flow (thalweg) of the Hariabhanga River established the original boundary between the states. Had the island not disappeared, the eventual determination of the island's sovereignty might have had a major impact over the location of the states' maritime boundary further offshore when it is negotiated between Bangladesh and India.

There is no available conclusive evidence as to which side of the island the main channel flowed, and it may have changed over time given shifting silt of the Sundarbans delta. India claimed that a 1981 detailed survey of water depths showed the main and much deeper channel and main flow on the east side of the island, which favored India. Similar survey data was printed on a 1990 British Admiralty chart and reprinted on the 1991 US National Geospatial-Intelligence Agency (NGA) chart number 63330 Edition 9 at 1:300,000 scale.[9]

On the other hand, the Bangladeshi government claimed, as during Ziaur Rahman's visit to India in the late 1970s, that data provided clearly showed the main current flow on the western side of the island's location, thus favoring Bangladesh.[10]

Under some international boundary precedents, the location of the channel in 1947 or at the time of the island's emergence may have been more relevant than its later location. River channels may shift their locations from time to time.

Based on a case filed by the Government of Bangladesh in October 2009[11] at the Permanent Court of Arbitration, the dispute was settled in July 2014 by a final verdict not open to appeal and in favour of Bangladesh. The tribunal awarded Bangladesh approximately 19,467 km2 (7,516 sq mi) of the roughly 25,602 km2 (9,885 sq mi) disputed maritime area in the Bay of Bengal, leaving the remainder — including South Talpatti Island itself — under India's sovereignty.[4][12]

Disappearance

In March 2010, Sugata Hazra of the School of Oceanographic Studies at Jadavpur University, Kolkata, India, said that the island had disappeared and that sea level rise caused by climate change was a factor.[13] He said that sea level rise, changes in monsoonal rain patterns which altered river flows, and land subsidence were all contributing to the inundation of land in the northern Bay of Bengal.[13] Hazra said that other islands in the Indian Sundarbans region are eroding very fast.[13] The United Nations Intergovernmental Panel on Climate Change has estimated that 17 percent of Bangladesh will be submerged underwater by 2050 if sea levels rise by 3.3 feet (1.0 m) due to climate change.[3]

Hazra said that due to global warming, temperatures in the Bay of Bengal area have been rising at an annual rate of 0.4 degrees Celsius and in the 2000–2009 decade, sea water level rose at a rate of 5 millimetres (0.20 in) a year.[14] India is preparing to send a study team to physically assess the situation in the region.[15]

See also

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References

  1. ↑ 1.0 1.1 Global warming as peacemaker? Disputed island disappears under rising sea. Archived 2025-05-01 at the Wayback Machine, Christian Science Monitor, March 24, 2010
  2. ↑ Bonnett, Alastair, 1964- (2014). Off the map : lost spaces, invisible cities, forgotten islands, feral places, and what they tell us about the world. London. ISBN 978-1-78131-257-5. OCLC 868380030.{{cite book}}: CS1 maint: location missing publisher (link) CS1 maint: multiple names: authors list (link) CS1 maint: numeric names: authors list (link)
  3. ↑ 3.0 3.1 Sunk by global warming? Wave goodbye to this disputed island Archived 2024-09-12 at the Wayback Machine, Los Angeles Times, March 25, 2010
  4. ↑ 4.0 4.1 "Bay of Bengal Maritime Boundary Arbitration between Bangladesh and India". Permanent Court of Arbitration. Archived from the original on 2010-12-13. Retrieved 2026-08-26.
  5. ↑ "The Island That Almost Started a War Between Bangladesh and India in 1981". The Deltagram. Retrieved 28 June 2026.
  6. ↑ "Disputed Bay of Bengal island 'vanishes' say scientists" Archived 2010-03-27 at the Wayback Machine, BBC, March 24, 2010
  7. ↑ A. G. Noorani. "Of Indo-Bangladesh distrust". Frontline. Archived from the original on 2009-03-26. Retrieved 2024-06-01.
  8. ↑ Disputed isle in Bay of Bengal vanishes Archived 2010-03-27 at the Wayback Machine by Nirmala George March 24, 2010
  9. ↑ The NGA chart states: "Users should refer corrections, additions, comments to NGA's Maritime Operations Desk toll free at 1-800-362-6289...See "Digital Nautical Chart". Archived from the original on 2009-05-27. Retrieved 2009-05-27. , or write to the NGA Maritime Division, Mail Stop D44, 4600 Sangamore Rd., Bethesda, MD 20816-5003." The chart cannot be posted on this site due to a UK Crown Copyright.
  10. ↑ "Sovereignty of South Talpatty island" Archived 2010-03-29 at the Wayback Machine, Daily Star, October 1, 2003
  11. ↑ "PCA-CPA". Archived from the original on 2010-12-13. Retrieved 2014-12-03.
  12. ↑ "UN Tribunal Resolves 40-Year-Old Maritime Dispute Between India and Bangladesh". NDTV. Archived from the original on 2022-08-12. Retrieved 2021-10-24.
  13. ↑ 13.0 13.1 13.2 Wade, Matt (March 25, 2010). "Rising sea level settles border dispute". The Sydney Morning Herald. Archived from the original on March 27, 2010. Retrieved April 4, 2010.
  14. ↑ "New Moore Island is no more as climate changes ends ownership dispute". The Times. March 25, 2010. Retrieved 2026-08-26.
  15. ↑ New Moore Island disappears Archived 2010-03-29 at the Wayback Machine, Press Trust of India, March 25, 2010
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