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2018 Sulawesi Earthquake And Tsunami
On 28 September 2018, a shallow, large earthquake struck in the neck of the Minahasa Peninsula, Indonesia, with its epicentre located in the mountainous Donggala Regency, Central Sulawesi. The magnitude 7.5 quake was located away from the provincial capital Palu and was felt as far away as Samarinda on East Kalimantan and also in Tawau, Malaysia. This event was preceded by a sequence of foreshocks, the largest of which was a magnitude 6.1 tremor that occurred earlier that day. Following the mainshock, a tsunami alert was issued for the nearby Makassar Strait. A localised tsunami struck Palu, sweeping shore-lying houses and buildings on its way. The combined effects of the earthquake and tsunami led to the deaths of an estimated 4,340 people. This makes it the deadliest earthquake to strike the country since the 2006 Yogyakarta earthquake, as well as the deadliest earthquake worldwide in 2018, surpassing the previous earthquake that struck Lombok nearly 2 months earlier, k ...
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Anak Krakatau
Anak Krakatoa ( id, Anak Krakatau)English translation and common name: ''Child of Krakatoa'' is a volcanic island in Indonesia. On 29 December 1927, Anak Krakatoa first emerged from the caldera formed in 1883 by the explosive volcanic eruption that destroyed the island of Krakatoa. There has been sporadic eruptive activity at the site since the late 20th century, culminating with a large underwater collapse of the volcano that caused a deadly Tsunami in December 2018. There has been subsequent activity since. Due to its young age, the island is one of several in the area that are of interest to, and the subject of extensive study by, volcanologists. History Background After the cataclysmic eruption of Krakatoa in 1883, Krakatoa Island lost approximately two-thirds of its body on the northwest side, obliterating the peaks of Perbuwatan and Danan, and leaving only the southern half of the island, including the Rakata volcano, as the last remnant of the original island. The l ...
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Tawau
Tawau (, Jawi: , ), formerly known as Tawao, is the capital of the Tawau District in Sabah, Malaysia. It is the third-largest city in Sabah, after Kota Kinabalu and Sandakan. It is located on the Semporna Peninsula in the southeast coast of the state in the administrative centre of Tawau Division, which is bordered by the Sulu Sea to the east, the Celebes Sea to the south at Cowie BayCowie Bay in the early 19th century was known as Kalabakong Bay. It is also known as Sibuco Bay. and shares a border with North Kalimantan, Indonesia. The town had an estimated population , of 113,809, while the whole municipality area had a population of 397,673 (including 47,466 in Kalabakan, subsequently split off to form a separate district).Above the official figures of the 2010 Census, there are a large number of illegal immigrants from Indonesia and the Philippines.(Goodlet, page 248 and page 299) The municipal area had a population of 372,615 at the 2020 Census. Before the founding of Tawa ...
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Pacific Plate
The Pacific Plate is an oceanic tectonic plate that lies beneath the Pacific Ocean. At , it is the largest tectonic plate. The plate first came into existence 190 million years ago, at the triple junction between the Farallon, Phoenix, and Izanagi Plates. The Pacific Plate subsequently grew to where it underlies most of the Pacific Ocean basin. This reduced the Farallon Plate to a few remnants along the west coast of North America and the Phoenix Plate to a small remnant near the Drake Passage, and destroyed the Izanagi Plate by subduction under Asia. The Pacific Plate contains an interior hot spot forming the Hawaiian Islands. Boundaries The north-eastern side is a divergent boundary with the Explorer Plate, the Juan de Fuca Plate and the Gorda Plate forming respectively the Explorer Ridge, the Juan de Fuca Ridge and the Gorda Ridge. In the middle of the eastern side is a transform boundary with the North American Plate along the San Andreas Fault, and a boundary with the ...
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Australian Plate
The Australian Plate is a major tectonic plate in the eastern and, largely, southern hemispheres. Originally a part of the ancient continent of Gondwana, Australia remained connected to India and Antarctica until approximately when India broke away and began moving north. Australia and Antarctica began rifting and completely separated roughly . The Australian plate later fused with the adjacent Indian Plate beneath the Indian Ocean to form a single Indo-Australian Plate. However, recent studies suggest that the two plates have once again split apart and have been separate plates for at least 3 million years and likely longer. The Australian Plate includes the continent of Australia, including Tasmania, as well as portions of New Guinea, New Zealand and the Indian Ocean basin. Scope The continental crust of this plate covers the whole of Australia, the Gulf of Carpentaria, southern New Guinea, the Arafura Sea, the Coral Sea. The continental crust also includes northwestern N ...
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Sulawesi
Sulawesi (), also known as Celebes (), is an island in Indonesia. One of the four Greater Sunda Islands, and the world's eleventh-largest island, it is situated east of Borneo, west of the Maluku Islands, and south of Mindanao and the Sulu Archipelago. Within Indonesia, only Sumatra, Borneo, and New Guinea, Papua are larger in territory, and only Java and Sumatra have larger populations. The landmass of Sulawesi includes four peninsulas: the northern Minahassa Peninsula, Minahasa Peninsula, the East Peninsula, Sulawesi, East Peninsula, the South Peninsula, Sulawesi, South Peninsula, and the Southeast Peninsula, Sulawesi, Southeast Peninsula. Three gulfs separate these peninsulas: the Gulf of Tomini between the northern Minahasa and East peninsulas, the Tolo Gulf between the East and Southeast peninsulas, and the Bone Gulf between the South and Southeast peninsulas. The Strait of Makassar runs along the western side of the island and separates the island from Borneo. Etymology ...
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Soil Liquefaction
Soil liquefaction occurs when a cohesionless saturated or partially saturated soil substantially loses strength and stiffness in response to an applied stress such as shaking during an earthquake or other sudden change in stress condition, in which material that is ordinarily a solid behaves like a liquid. In soil mechanics, the term "liquefied" was first used by Allen Hazen in reference to the 1918 failure of the Calaveras Dam in California. He described the mechanism of flow liquefaction of the embankment dam as: The phenomenon is most often observed in saturated, loose (low density or uncompacted), sandy soils. This is because a loose sand has a tendency to compress when a load is applied. Dense sands, by contrast, tend to expand in volume or 'dilate'. If the soil is saturated by water, a condition that often exists when the soil is below the water table or sea level, then water fills the gaps between soil grains ('pore spaces'). In response to soil compressing, the po ...
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Mamuju (city)
Mamuju is the capital of the Indonesian province of West Sulawesi. The town was formerly part of South Sulawesi province. Education Education in Mamuju extends up to SMA III (Year 12) and people from surrounding areas (especially the area of Kalumpang) will travel to Mamuju to further their education. Students who wish to pursue a tertiary education must travel to larger towns like Makassar. Agriculture Agriculture in this area includes jackfruit, rambutan, durian, rice, and bananas. Demographics Like many places in West Sulawesi, Mamuju is a predominantly Muslim town, with many mosques. However, Christianity has established a presence with several churches in this town, in addition to a small contingent of Buddhists. Climate Mamuju has a tropical rainforest climate (Köppen ''Af'') with heavy rainfall year-round. Culture An annual sandeq race takes place every August from Mamuju to Makassar. Twin towns – sister cities Mamuju is twinned with: * Gorontalo Cit ...
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Donggala
Donggala Regency is a regency in the Central Sulawesi Province of Indonesia. It lies between 0° 30" north and 2°20" south latitude, and between 119° 45°" and 121° 45" east longitude, and covers a land area of 5,275.69 km2. It had a population of 277,236 at the 2010 Census and 300,436 at the 2020 Census; the official estimate as at mid 2021 was 302,965. The administrative capital of Donggala Regency is the town of Banawa, located a 30-minute drive (34 km) northwest from the city of Palu, the capital of the province. History Before the Dutch assumed administration in 1904 under Governor-General J. B. van Heutsz, the Central Sulawesi area was the home of eight small kingdoms (''kerajaan''): Palu, Sigi Dolo, Kulawi, Biromaru, Banawa, Tawaili, Parigi, and Moutong. In September 2018, Donggala and Palu City suffered heavy casualties due to a tsunami. Administrative Districts The Dongala Regency is divided at 2010 into sixteen districts (''kecamatan''). These are ...
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Indonesian Agency For Meteorology, Climatology And Geophysics
Meteorology, Climatology, and Geophysical Agency ( id, Badan Meteorologi, Klimatologi, dan Geofisika, abbreviated BMKG) is an Indonesian non-departmental government agency for meteorology, climatology, and geophysics. History Its history began on 1841 with individual observation conducted by Dr. Onnen, the head of hospital in Bogor, and was established as a formal government institution on 1866 by the Dutch East Indies government by the name of ''Magnetisch en Meteorologisch Observatorium''. The agency name changed several times and its current name was given on 6 September 2008.BMG becomes BMKG


Tropical Cyclone Warning Centre

Since 1986 the BMKG, has run a Tropical Cyclone Warning Centre (TCWC), within their headquarters in Jakarta. Over the next 12 ...
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5 August 2018 Lombok Earthquake
On 5 August 2018, a destructive and shallow earthquake measuring Mw 6.9 ( according to BMKG) struck the island of Lombok, Indonesia. It was the main shock following its foreshock, a nearby 6.4 earthquake on 29 July. It was followed by a nearby 6.9 earthquake on 19 August 2018. The epicentre was located inland, near Loloan Village in North Lombok Regency. The fault rupture spread to the north and reached the sea, creating tsunamis. Severe shaking was reported throughout the entire island, while strong shaking was reported on the neighboring islands of Bali and Sumbawa. Widespread damage was reported in Lombok and Bali. Officials stated that at least 80% of structures in North Lombok were damaged or destroyed. In the aftermath of the sequence of earthquakes in August, a total of 563 people were confirmed killed while more than 1,000 were confirmed injured. More than 417,000 people were displaced. This earthquake is the largest and the strongest earthquake to have hit Lombok i ...
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2006 Yogyakarta Earthquake
The 2006 Yogyakarta earthquake (also known as the Bantul earthquake) occurred at with a moment magnitude of 6.4 and a maximum MSK intensity of VIII (''Damaging''). Several factors led to a disproportionate amount of damage and number of casualties for the size of the shock, with more than 5,700 dead, tens of thousands injured, and financial losses of Rp 29.1 trillion ( $3.1 billion). With limited effects to public infrastructure and lifelines, housing and private businesses bore the majority of damage (the 9th-century Prambanan Hindu temple compound was also affected), and the United States' National Geophysical Data Center classified the total damage from the event as extreme. Although Indonesia experiences very large, great, and giant thrust earthquakes offshore at the Sunda Trench, this was a large strike-slip event that occurred on the southern coast of Java near the city of Yogyakarta. Mount Merapi lies nearby, and during its many previous historical eruptions, large volum ...
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Makassar Strait
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 Mahakam River and Karangan River of Borneo empty into the strait. Ports along the strait include Balikpapan and Bontang in Borneo, and Makassar, Palu, and Parepare in Sulawesi. The city of Samarinda is 48 km (30 mi) from the strait, along the Mahakam. Extent The International Hydrographic Organization (IHO) defines the Makassar Strait as being one of the waters of the East Indian Archipelago. The IHO defines its limits as follows: The channel between the East coast of Borneo and the West coast of Celebes _Sulawesi.html" ;"title="/nowiki> Sulawesi">/nowiki> Sulawesi/nowiki>, is bounded: ''On the North.'' By a line joining Tanjong Mangkalih ...
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