Tongue of the Ocean

Last updated
The Tongue of the Ocean can be seen along the east coast of Andros Island. The top of this picture is slightly east of north. Photo: NASA. Tongue of the Ocean with Andros.jpg
The Tongue of the Ocean can be seen along the east coast of Andros Island. The top of this picture is slightly east of north. Photo: NASA.
Underwater dunes, Bahamas. Tongue of the Ocean is just above this closeup. Photo: NASA Ocean Sand, Bahamas (5638320778).jpg
Underwater dunes, Bahamas. Tongue of the Ocean is just above this closeup. Photo: NASA

The Tongue of the Ocean (TOTO) is the name of a region of much deeper water in the Bahamas separating the islands of Andros and New Providence.

Contents

Features

The TOTO is a U-shaped, relatively flat-bottomed trench measuring approximately 30 by 240 kilometres (20 by 150 mi). Its depth varies gradually from 1,100 m (3,600 ft) in the south to 2,000 m (6,600 ft) in the north. [1]

Its only exposure to the open ocean is at the northern end. Except for the northern ocean opening, the TOTO is surrounded by numerous islands, reefs, and shoals which make a peripheral shelter isolating it from ocean disturbances, particularly high ambient noise. [1]

This channel and the Providence Channels are the two main branches of the Great Bahama Canyon, a submerged geological feature formed by erosion during periods of lower sea level. During their early history the Tongue of the Ocean and the Providence Channel were broad, relatively shallow basins flanked by growing carbonate banks. As the Blake-Bahama platform subsided, sedimentation kept pace with subsidence on the banks, but not in the basins. [2]

See also

Related Research Articles

The Bahamas Country in the West Indies

The Bahamas, known officially as the Commonwealth of The Bahamas, is a country within the Lucayan Archipelago of the West Indies in the Atlantic. It takes up 97% of the Lucayan Archipelago's land area and is home to 88% of the archipelago's population. The archipelagic state consists of more than 700 islands, cays, and islets in the Atlantic Ocean, and is located north of Cuba and northwest of the island of Hispaniola and the Turks and Caicos Islands, southeast of the US state of Florida, and east of the Florida Keys. The capital is Nassau on the island of New Providence. The Royal Bahamas Defence Force describes The Bahamas' territory as encompassing 470,000 km2 (180,000 sq mi) of ocean space.

Geography of the Bahamas

The Bahamas are a group of about 700 islands and cays in the western Atlantic Ocean, of which only between 30 and 40 are inhabited. The largest of the islands is Andros Island, located north of Cuba and 200 kilometres southeast of Florida. The Bimini islands are to its northwest. To the North is the island of Grand Bahama, home to the second-largest city in the country, Freeport. The island of Great Abaco is to its east. In the far south is the island of Great Inagua, the second-largest island in the country. Other notable islands include Eleuthera, Cat Island, San Salvador Island, Acklins, Crooked Island, and Mayaguana. Nassau is the capital and largest city, located on New Providence. The islands have a tropical savannah climate, moderated by the Gulf Stream. The total size is 13,878 km2 (5,358 sq mi). Due to the many widespread islands it has the 41st largest Exclusive Economic Zone of 654,715 km2 (252,787 sq mi).

New Providence Caribbean island of the Bahamas

New Providence is the most populous island in The Bahamas, containing more than 70% of the total population. It is the location of the national capital city of Nassau, whose boundaries are coincident with the island; it had a population of 246,329 at the 2010 Census; the latest estimate (2016) is 274,400. The island was originally under Spanish control following Christopher Columbus's discovery of the New World, but the Spanish government showed little interest in developing the island. Nassau, the island's largest city, was formerly known as Charles-town, but it was burned to the ground by the Spanish in 1684. It was laid out and renamed Nassau in 1695 by Nicholas Trott, the most successful Lord Proprietor, in honour of the Prince of Orange-Nassau who became William III of England. The three branches of Bahamian Government: the executive, the legislative, and the judiciary, are all headquartered on New Providence. New Providence functions as the main commercial hub of The Bahamas. It is also home to more than 400 banks and trust companies, and its hotels and port account for more than two-thirds of the four million-plus tourists who visit The Bahamas annually. Other settlements on New Providence include Grants Town, Bain Town, Fox Hill, Adelaide, Yamacraw, South Beach, Coral Harbour, Lyford Cay, Paradise Island, Sea Breeze, Centreville, The Grove (South) and The Grove, Cable Beach, Delaporte, Gambier, Old Fort Bay, and Love Beach.

Andros, Bahamas

Andros Island is an archipelago within the Bahamas, the largest of the Bahamian Islands. Politically considered a single island, Andros in total has an area greater than all the other 700 Bahamian islands combined. The land area of Andros consists of hundreds of small islets and cays connected by mangrove estuaries and tidal swamplands, together with three major islands: North Andros, Mangrove Cay, and South Andros. The three main islands are separated by "bights", estuaries that trifurcate the island, connecting the island's east and west coasts. It is 167 kilometres (104 mi) long by 64 km (40 mi) wide at the widest point.

University of the Bahamas

The University of The Bahamas (UB) is the national public institution of higher education in the Commonwealth of The Bahamas with campuses throughout the archipelago. The main campus is located in the capital city of Nassau, on the island of New Providence.

Mangrove Cay Island in The Bahamas

Mangrove Cay is one of the districts of the Bahamas, on Andros Island. Its capital is Moxey Town in the north east corner of the island.

Blue hole Marine cavern or sinkhole, open to the surface, in carbonate bedrock

A blue hole is a large marine cavern or sinkhole, which is open to the surface and has developed in a bank or island composed of a carbonate bedrock. Their existence was first discovered in the late 20th century by fishermen and recreational divers. Blue holes typically contain tidally influenced water of fresh, marine, or mixed chemistry. They extend below sea level for most of their depth and may provide access to submerged cave passages. Well-known examples are the Dragon Hole and, in the Caribbean, the Great Blue Hole and Dean's Blue Hole.

Bahama Banks The submerged carbonate platforms that make up much of the Bahama Archipelago

The Bahama Banks are the submerged carbonate platforms that make up much of the Bahama Archipelago. The term is usually applied in referring to either the Great Bahama Bank around Andros Island, or the Little Bahama Bank of Grand Bahama Island and Great Abaco, which are the largest of the platforms, and the Cay Sal Bank north of Cuba. The islands of these banks are politically part of the Bahamas. Other banks are the three banks of the Turks and Caicos Islands, namely the Caicos Bank of the Caicos Islands, the bank of the Turks Islands, and wholly submerged Mouchoir Bank. Further southeast are the equally wholly submerged Silver Bank and Navidad Bank north of the Dominican Republic.

1929 Bahamas hurricane 1929 Bahamas hurricane

The 1929 Bahamas hurricane was a high-end Category 4 tropical cyclone whose intensity and slow forward speed led to catastrophic damage in the Bahamas in September 1929, particularly on Andros and New Providence islands. Its erratic path and a lack of nearby weather observations made the hurricane difficult to locate and forecast. The storm later made two landfalls in Florida, killing eleven but causing comparatively light damage. Moisture from the storm led to extensive flooding over the Southeastern United States, particularly along the Savannah River. Across its path from the Bahamas to the mouth of the Saint Lawrence River, the hurricane killed 155 people.

West Indies Island region of the North Atlantic Ocean and the Caribbean

The West Indies are a subregion of North America, surrounded by the North Atlantic Ocean and the Caribbean Sea that includes 13 independent island countries and 18 dependencies and other territories in three major archipelagos: the Greater Antilles, the Lesser Antilles, and the Lucayan Archipelago.

Atlantic Undersea Test and Evaluation Center

The United States Navy's Atlantic Undersea Test and Evaluation Center (AUTEC) is a laboratory that performs integrated three-dimensional hydrospace/aerospace trajectory measurements covering the entire spectrum of undersea simulated warfare – calibration, classifications, detection, and destruction. Its mission is to assist in establishing and maintaining naval ability of the United States through testing, evaluation, and underwater research.

Rockall Basin Bathymetric feature northwest of Scotland and Ireland

The Rockall Trough is a deep-water bathymetric feature to the northwest of Scotland and Ireland, running roughly from southwest to northeast, flanked on the north by the Rockall Plateau and to the south by the Porcupine Seabight. At the northern end, the channel is bounded by the Wyville-Thomson Ridge, named after Charles Wyville Thomson, professor of zoology at the University of Edinburgh and driving force behind the Challenger Expedition. At the southern end, the trough opens into the Porcupine abyssal plain. The Rockall Basin is a large sedimentary basin that lies beneath the trough. Both are named after Rockall, a rocky islet lying 301.4 km west of St Kilda.

Cay Sal Bank Carbonate platform in Bahama Banks, The Bahamas

Cay Sal Bank is the third largest and the westernmost of the Bahama Banks. It is located between 23º27'N - 24º10'N and 079º25'W – 080º35'W. In a geographical sense, it is separate from the Bahamas proper as it is much closer to Cuba than to the closest Bahamanian island. It is separated by Santaren Channel from the Great Bahama Bank, the western rim of which is 50 km (31 mi) to the east. The Straits of Florida separate it from the United States mainland and the Florida Keys.

Jamaican slider Species of turtle

The Jamaican slider also known as the Cat Island slider is a species of fresh water turtle in the family Emydidae. It is found in the Bahamas and Jamaica. As it is not currently found on any of the other surrounding islands in the region it is assumed that the Jamaican slider was introduced from one of these countries to the other. Even though the popular theory was that these turtles originated from Jamaica, current geological evidence may suggest that they were in the Bahamas long before the native Indians first went to the Bahama islands. There is also evidence from archeological sites on San Salvador that the native Indians ate these turtles and transplanted them around the West Indies.

Western Air is the largest privately owned airline in The Bahamas. Western Air is headquartered at the San Andros International Airport on Andros Island, Bahamas. The airline was established in 2001 by the husband-and-wife team, Rex J. Rolle and Shandrice Woodside- Rolle. Currently, Mr. and Mrs. Rolle serve as President & CEO and Vice President & COO respectively. Their daughter, Sherrexcia 'Rexy' Rolle, is an aviation attorney and serves as Vice President of Operations and General Counsel. Western Air has two major hubs inclusive of private passenger terminals, full service aircraft maintenance facilities and corporate offices located at San Andros International Airport and the second hub at Grand Bahama International Airport, which serves as its northern hub. The airline conducts a minimum of 40 flights daily throughout the Bahamas and has plans of opening new international routes from the Bahamas Haiti, Jamaica, Turks & Caicos, and Fort Lauderdale and West Palm Beach, Florida. The airline operates a mixed fleet of Embraer EMB 145 jet aircraft and Saab 340As. Western Air's fleet increased with the publicized multi-aircraft deal for EMB 145s jets in 2018. The airline is slated to acquire additional jets in 2019 and 2020 to assist with growing airlift demands.

Outline of the Bahamas Overview of and topical guide to The Bahamas

The following outline is provided as an overview of and topical guide to The Bahamas:

Index of Bahamas-related articles

The following is an alphabetical list of topics related to the Commonwealth of The Bahamas.

Great Bahama Canyon

The Great Bahama Canyon is a V-shaped submarine canyon system in the Bahamas that cuts between the Abaco Islands to the north and Eleuthera island to the south. It separates the Bahama Banks and forms one of the deepest underwater canyon systems known. There are three branches: the Tongue of the Ocean running south between Andros and New Providence, and the northeast and northwest Providence Channel. The canyon walls reach heights of 5 kilometres (3 mi), taller than any canyon walls on land. This canyon system has remained open through a process of submarine erosion.

MS <i>Logna</i>

MV Logna was built as general cargo ship in Bergens Mekaniske Verksted, Shipyard, Norway in 1958. She transported cargo between Norway and Spain until 1969, when she was acquired by the Bahama Cement Company. In 1970, she was converted to a bulk cement carrier and she was renamed MV Island Cement. She was used to ship bulk cement between Freeport, Bahamas, Fort Pierce, Port Canaveral, and Fort Lauderdale, Florida, and to Eleuthera and New Providence in the Bahamas. In 1980, the Company conducted an underwater survey and determined that it was not economical to perform required repairs. Instead, the ship was decommissioned and the company planned to sell her for scrap.

Hurricanes in the Bahama Archipelago Wikipedia list article

The Bahama Archipelago, also known as the Lucayan Archipelago, is an island group comprising the Commonwealth of The Bahamas and the British Overseas Territory of the Turks and Caicos Islands. The archipelago is in the western North Atlantic Ocean, north of Cuba along with the other Antilles, and east and southeast of Florida. The archipelago has experienced the effects of at least 22 Atlantic hurricanes, or storms that were once tropical or subtropical cyclones, including 17 since 2000. The storms collectively killed 101 people.

References

  1. 1 2 US Navy AUTEC Soundings, August 1969.
  2. Hooke, Roger LeB; Schlager, Wolfgang (1980). "Geomorphic evolution of the Tongue of the Ocean and the Providence Channels, Bahamas". Marine Geology. 35 (4): 343–366. Bibcode:1980MGeol..35..343H. doi:10.1016/0025-3227(80)90125-5.

Coordinates: 24°5′25″N77°14′6″W / 24.09028°N 77.23500°W / 24.09028; -77.23500