| Bali Sea | |
|---|---|
| Laut Bali (Indonesian) | |
 Bali Sea near Lombok | |
  Bali Sea | |
| Coordinates | 7°30′S115°30′E / 7.500°S 115.500°E |
| Type | Sea |
| Basin countries | Indonesia |
| Surface area | 45,000 km2 (17,000 sq mi) |
The Bali Sea (Indonesian : Laut Bali) is the body of water north of the island of Bali and south of Kangean Island in Indonesia. The sea forms the south-west part of the Flores Sea, and the Madura Strait opens into it from the west. [1]
The Bali Sea is sometimes grouped with the Flores Sea for oceanographic purposes; however, in some nautical charts, Bali Sea is written as a distinct sea for navigation. The sea has an area of 45,000 km2 (17,000 sq mi) and a maximum depth of 1,590 m (5,217 ft). [2]
The International Hydrographic Organization (IHO) defines the Bali Sea as being one of the waters of the East Indian Archipelago. The IHO defines its limits as follows: [3]
On the North. A line from the Western Paternoster Island to the East point of Sepandjang and thence through this island to the West point of Gedeh Bay on the South coast of Kangean ( 7°01′S115°18′E / 7.017°S 115.300°E ).
On the West. A line from the West point of Gedeh Bay, Kangean Island, to Tg Sedano, the Northeast extreme of Java and down the East coast to Tg Bantenan, the Southeast extreme of the island.
On the South. A line from Tanjong Banenan through the Southern points of Balt [ sic ] and Noesa Islands to Tanjong Bt Gendang, the Southwest extreme of Lombok, and its South coast to Tanjong Ringgit the Southeast extreme, thence a line to Tanjong Mangkoen ( 9°01′S116°43′E / 9.017°S 116.717°E ) the Southwest extreme of Soembawa.
On the East. The West and North coasts of Soembawa as far East as Tanjong Sarokaja ( 8°22′S117°10′E / 8.367°S 117.167°E ), thence the Western limit of Flores Sea [A line from Tg Sarokaja to the Western Paternoster island ( 7°26′S117°08′E / 7.433°S 117.133°E )].
The circulation and mass water properties in Bali Sea are a continuation from Flores Sea to the Java Sea in the north. In oceanographic, Bali Sea is concerned with the Indonesian Throughflow coming from Pacific Ocean to the Indian Ocean, the flow of which are mostly passing through Bali Strait and Lombok Strait. [4]
In a recorded tsunami history, Bali Sea observed several tsunamis. The 1815 Tambora eruption (scale 7 of Volcanic Explosivity Index) formed tsunamis on 22 September 1815 at coordinate 8°00′S115°12′E / 8.00°S 115.20°E and three years later (8 September 1818) from subsequent volcanic activities at coordinate 7°00′S117°00′E / 7.0°S 117.0°E . [5] Two more tsunamis were recorded in 1857 and 1917 with maximum heights of 3 and 2 meters (9.8 and 6.6 ft) respectively. [5]
The Sulu Sea is a body of water in the southwestern area of the Philippines, separated from the South China Sea in the northwest by Palawan and from the Celebes Sea in the southeast by the Sulu Archipelago. Borneo is found to the southwest and Visayas to the northeast.
The Java Sea is an extensive shallow sea on the Sunda Shelf, between the Indonesian islands of Borneo to the north, Java to the south, Sumatra to the west, and Sulawesi to the east. Karimata Strait to its northwest links it to the South China Sea. It is a part of the western Pacific Ocean.
The Celebes Sea or Sulawesi Sea of the western Pacific Ocean is bordered on the north by the Sulu Archipelago and Sulu Sea and Mindanao Island of the Philippines, on the east by the Sangihe Islands chain, on the south by Sulawesi's Minahasa Peninsula, and the west by northern Kalimantan in Indonesia. It extends 420 miles (675 km) north-south by 520 mi (840 km) east-west and has a total surface area of 110,000 square miles (280,000 km2), to a maximum depth of 20,300 feet (6,200 m). South of the Cape Mangkalihat, the sea opens southwest through the Makassar Strait into the Java Sea.
Makassar Strait is a strait between the islands of Borneo and Sulawesi in Indonesia. To the north it joins the Celebes Sea, while to the south it meets the Java Sea. To the northeast, it forms the Sangkulirang Bay south of the Mangkalihat Peninsula. The strait is an important regional shipping route in Southeast Asia.
The Timor Sea is a relatively shallow sea in the Indian Ocean bounded to the north by the island of Timor with Timor-Leste to the north, Indonesia to the northwest, Arafura Sea to the east, and to the south by Australia. The Sunda Trench marks the deepest point of the Timor Sea with a depth of more than 3300 metres, separating the continents of Oceania in the southeast and Asia to the northwest and north. The Timor sea is prone to earthquakes and tsunamis north of the Sunda Trench, due to its location on the Ring of Fire as well as volcanic activity and can experience major cyclones, due to the proximity from the Equator.
The Savu Sea is a small sea within Indonesia named for the island of Savu (Sawu) on its southern boundary. It is bounded by Savu and Raijua to the south, the islands of Rote and Timor to the east, Flores and the Alor archipelago to the north/northwest, and the island of Sumba to the west/northwest. Between these islands, it flows into the Indian Ocean to the south and west, the Flores Sea to the north, and the Banda Sea to the northeast.
The Banda Sea is one of four seas that surround the Maluku Islands of Indonesia, connected to the Pacific Ocean, but surrounded by hundreds of islands, including Timor, as well as the Halmahera and Ceram Seas. It is about 1000 km (600 mi) east to west, and about 500 km (300 mi) north to south.
The Halmahera Sea is a regional sea located in the central eastern part of the Australasian Mediterranean Sea. It is centered at about 1°S and 129°E and is bordered by the Pacific Ocean to the north, Halmahera to the west, Waigeo and West Papua to the east, and the Seram Sea to the south. It covers about 95,000 km (59,000 mi) and its topography comprises a number of separate basins and ridges, the chief of which is the Halmahera Basin reaching a depth of 2039 m.
The Arafura Sea lies west of the Pacific Ocean, overlying the continental shelf between Australia and Western New Guinea, which is the Indonesian part of the Island of New Guinea.
The Kangean Islands or simply Kangean is a collective name for a group of islands lying to the east of Madura. Kangean and its surrounding islands lie to the north of Bali in the northern Bali Sea, to the northwest of the Lesser Sunda Islands, and administratively they form three districts within Sumenep Regency, East Java Province. The group comprises a total of 91 islands including 27 inhabited islands. Kangean is located approximately 120 km (75 mi) in the north of Bali, the northwest of Lombok, and 120 km east of Madura. The biggest and most populous district is Arjasa, which includes the town of that name located in the west of the island. The Kangean Islands have a large potential for natural resources, such as natural gas, teak, coconut, and salt production.
The Flores Sea covers 240,000 square kilometres (93,000 sq mi) of water in Indonesia. The sea is bounded on the north by the island of Celebes and on the south by the Sunda Islands of Flores and Sumbawa.
The Molucca Sea is located in the western Pacific Ocean, around the vicinity of Indonesia, specifically bordered by the Indonesian Islands of Celebes (Sulawesi) to the west, Halmahera to the east, and the Sula Islands to the south. The Molucca Sea has a total surface area of 77,000 square miles. The Molucca Sea is rich in coral and has many diving sites due to the deepness of its waters. The deepness of the water explains the reasoning behind dividing the sea into three zones, which functions to transport water from the Pacific Ocean to the shallower seas surrounding it. The deepest hollow in the Molucca Sea is the 15,780-foot (4,810-meter) Batjan basin. This region is known for its periodic experiences of earthquakes, which stems from the sea itself being a micro plate, in which the Molucca Sea is being subducted in two opposite directions: one in the direction of the Eurasian Plate to the west and the other in the direction of the Philippine Sea Plate to the east.
The Gulf of Tomini, also known as the Bay of Tomini, is the equatorial gulf which separates the Minahassa (Northern) and East Peninsulas of the island of Sulawesi (Celebes) in Indonesia. The Togian Islands lie near its center. To the east, the Gulf opens onto the Molucca Sea.
The Seram Sea or Ceram Sea is one of several small seas between the scattered islands of Indonesia. It is a section of the Pacific Ocean with an area of approximately 120,000 km2 (46,000 sq mi) located between Buru and Seram, which are two of the islands once called the South Moluccas. These islands are the native habitat of plants long coveted for their use as spices, such as nutmeg, cloves, and black peppercorns, and the seas surrounding them were busy shipping routes. The Seram Sea is also the habitat of several species of tropical goby and many other fish. Like many other small Indonesian seas, the Seram Sea is rocky and very tectonically active.
The International Submarine Escape and Rescue Liaison Office ("ISMERLO") is an organization that coordinates international submarine search and rescue operations. It was established in 2003 by NATO and the Submarine Escape and Rescue Working Group (SMERWG) following the disaster of the Russian submarine K-141 Kursk. Its purpose is to provide an international liaison service to prevent peacetime submarine accidents, and to quickly respond on a global basis if they occur.
The East Indian Archipelago is an area designated by the International Hydrographic Organization (IHO). It encompasses twelve seas, two gulfs, and one strait in the East Indies.
The borders of the oceans are the limits of Earth's oceanic waters. The definition and number of oceans can vary depending on the adopted criteria. The principal divisions of the five oceans are the Pacific Ocean, Atlantic Ocean, Indian Ocean, Southern (Antarctic) Ocean, and Arctic Ocean. Smaller regions of the oceans are called seas, gulfs, bays, straits, and other terms. Geologically, an ocean is an area of oceanic crust covered by water.
The Cakra class is a class of two Type 209/1300 attack submarines developed by Howaldtswerke-Deutsche Werft of Germany that were bought and commissioned by the Indonesian Navy in the 1980s. The second member of the class, KRI Nanggala sank in 2021 with all hands during an exercise. The lead submarine, KRI Cakra, remains in service.
KRI Nanggala (402), also known as Nanggala II, was one of two Cakra-class Type 209/1300 diesel-electric attack submarines of the Indonesian Navy. It sank following an implosion in April 2021.
The 1815 Bali earthquake occurred on November 22 between 22:00 and 23:00 local time (WITA), affecting the Bali Kingdom. The estimated moment magnitude 7.0 earthquake struck off the north coast of Bali at a shallow depth. It was assigned a maximum intensity of IX (Violent) on the Mercalli intensity scale, causing severe damage in Buleleng and Tabanan. The earthquake caused a landslide and tsunami that killed 11,453 people.
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