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1883 Eruption Of Krakatoa
Beginning on 20 May 1883, and ending on 21 October 1883, the volcanic island of Krakatoa, located in the Sunda Strait, had repeated, months long Types of volcanic eruptions, volcanic eruptions. The most destructive of these eruptions occurred on 27 August, when over 70% of the island and its Krakatoa archipelago, surrounding archipelago were destroyed when it erupted so violently it collapsed itself into a caldera. The August eruption had an estimated Volcanic explosivity index, Volcanic Explosivity Index (VEI) of 6, and is List of volcanic eruptions by death toll, one of the deadliest and most destructive volcanic events in recorded history. The explosion was heard away in Perth, Western Australia, and Rodrigues near Mauritius, away. The acoustic pressure wave circled the globe more than three times. At least 36,417 deaths are attributed to the eruption and the tsunamis it created. Significant additional effects were felt worldwide in the days and weeks after the volcano's e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Krakatoa
Krakatoa (), also transcribed (), is a caldera in the Sunda Strait between the islands of Java and Sumatra in the Indonesian province of Lampung. The caldera is part of a volcanic island group (Krakatoa archipelago) comprising four islands. Two of them are known as Lang Island, Lang and Verlaten Island, Verlaten; another, Rakata, is the only remnant of an island mostly destroyed by an 1883 eruption of Krakatoa, eruption in 1883 which created the caldera. In 1927, a fourth island, Anak Krakatoa, or "Child of Krakatoa", emerged from the caldera formed in 1883. There has been new eruptive activity since the late 20th century, with a large collapse causing 2018 Sunda Strait tsunami, a deadly tsunami in December 2018. Historical significance The most notable eruptions of Krakatoa culminated in a series of massive explosions over 26–27 August 1883, which were among the most violent volcanic events in recorded history. With an estimated Volcanic explosivity index (VEI) of 6, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mauritius
Mauritius, officially the Republic of Mauritius, is an island country in the Indian Ocean, about off the southeastern coast of East Africa, east of Madagascar. It includes the main island (also called Mauritius), as well as Rodrigues, Agaléga, and St. Brandon (Cargados Carajos shoals). The islands of Mauritius and Rodrigues, along with nearby Réunion (a French overseas department), are part of the Mascarene Islands. The main island of Mauritius, where the population is concentrated, hosts the capital and largest city, Port Louis. The country spans and has an exclusive economic zone covering approximately . The 1502 Portuguese Cantino planisphere has led some historians to speculate that Arab sailors were the first to discover the uninhabited island around 975, naming it ''Dina Arobi''. Called ''Ilha do Cirne'' or ''Ilha do Cerne'' on early Portuguese maps, the island was visited by Portuguese sailors in 1507. A Dutch fleet, under the command of Admiral Van War ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Ocean
The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or approximately 20% of the water area of Earth#Surface, Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia (continent), Australia to the east. To the south it is bounded by the Southern Ocean or Antarctica, depending on the definition in use. The Indian Ocean has large marginal or regional seas, including the Andaman Sea, the Arabian Sea, the Bay of Bengal, and the Laccadive Sea. Geologically, the Indian Ocean is the youngest of the oceans, and it has distinct features such as narrow continental shelf, continental shelves. Its average depth is 3,741 m. It is the warmest ocean, with a significant impact on global climate due to its interaction with the atmosphere. Its waters are affected by the Indian Ocean Walker circulation, resulting in unique oceanic currents and upwelling patterns. The Indian Ocean is ecologically diverse, with important ecosystems such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pumice
Pumice (), called pumicite in its powdered or dust form, is a volcanic rock that consists of extremely vesicular rough-textured volcanic glass, which may or may not contain crystals. It is typically light-colored. Scoria is another vesicular volcanic rock that differs from pumice in having larger vesicles, thicker vesicle walls, and being dark colored and denser.Jackson, J.A., J. Mehl, and K. Neuendorf (2005) ''Glossary of Geology'' American Geological Institute, Alexandria, Virginia. 800 pp. McPhie, J., M. Doyle, and R. Allen (1993) ''Volcanic Textures A guide to the interpretation of textures in volcanic rocks'' Centre for Ore Deposit and Exploration Studies, University of Tasmania, Hobart, Tasmania..198 pp. Pumice is created when super-heated, highly pressurized rock is rapidly ejected from a volcano. The unusual foamy configuration of pumice happens because of simultaneous rapid cooling and rapid depressurization. The depressurization creates bubbles by lowering the sol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banten
Banten (, , Pegon alphabet, Pegon: بنتن) is the westernmost Provinces of Indonesia, province on the island of Java, Indonesia. Its capital city is Serang and its largest city is Tangerang. The province borders West Java and the Special Capital Region of Batavia, Special Capital Region of Jakarta on the east, the Java Sea on the north, the Indian Ocean on the south, and the Sunda Strait (which separates Java from the neighbouring island of Sumatra) on the west and shares a maritime border with Lampung to the west. The province covers an area of . It had a population of over 11.9 million in the 2020 Indonesian census, 2020 census,Badan Pusat Statistik, Jakarta, 2021. up from about 10.6 million in 2010 Indonesian census, 2010.Biro Pusat Statistik, Jakarta, 2011. The estimated mid-2024 population was 12.43 million.Badan Pusat Statistik, Jakarta, 28 February 2025, ''Provinsi Banten Dalam Angka 2025'' (Katalog-BPS 1102001.36) Formerly part of the province of West Java, Banten was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anyer
Anyer, also known as Anjer or Angier, is a coastal town in Banten, formerly West Java, Indonesia, west of Jakarta and south of Merak. A significant coastal town late 18th century, Anyer faces the Sunda Strait. History The town was a considerable port in the 19th century but was destroyed by a 100-foot-high tsunami which was caused by the 1883 eruption of Krakatoa. The present settlement still houses the Cikoneng Lighthouse built by the Dutch government two years later as a memorial for the townspeople killed by the eruption. It was also the starting point of the Great Post Road, built by the Dutch in the nineteenth century, which ran around to the eastern tip of Java. Off the coast of Anyer is the island Pulau Sangiang, an uninhabited island with vast areas of untouched jungle. The area is also known for coral formations swarming with tropical fish. Anyer Beach is a tourist attraction with hot swimming water, a hotel, and rental of resting sheds, boats, four-wheeled motorcy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danan (volcano)
Danan (uncertain derivation) was one of the three volcanic cones (the others being Perboewatan and Rakata) on the island of Krakatoa, in the Sunda Strait, in Indonesia. It stood , lay in the central area of the island, and may have been a twin volcano. Danan was almost entirely destroyed in the 1883 eruption of Krakatoa; only a rocky islet named Bootsmansrots remains of it. Not much information can be found about Danan; the interior of Krakatoa was little explored or surveyed. There were several peaks, and Verbeek surmised that it formed a "ring-shaped crater wall". In one of the photographs of Perboewatan erupting in May 1883, Danan's irregular shape can be seen in the background, partially obscured by the ash cloud arising from Perboewatan. Danan apparently joined Perboewatan in eruption sometime after May 1680, when Perboewatan started erupting. A returning Dutch traveler saw both cones erupting in February 1681. Perboewatan started erupting in May 1883. In June, a black cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jakarta
Jakarta (; , Betawi language, Betawi: ''Jakartè''), officially the Special Capital Region of Jakarta (; ''DKI Jakarta'') and formerly known as Batavia, Dutch East Indies, Batavia until 1949, is the capital and largest city of Indonesia and an autonomous region at the provincial level. Lying on the northwest coast of Java, the world's List of islands by population, most populous island, Jakarta is the List of cities in ASEAN by population, largest metropole in Southeast Asia and serves as the diplomatic capital of ASEAN. The Special Region has a status equivalent to that of a Provinces of Indonesia, province and is bordered by two other provinces: West Java to the south and east; and Banten to the west. Its coastline faces the Java Sea to the north, and it shares a maritime border with Lampung to the west. Jakarta metropolitan area, Jakarta's metropolitan area is List of ASEAN country subdivisions by GDP, ASEAN's second largest economy after Singapore. In 2023, the city's Gros ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Batavia, Dutch East Indies
Batavia was the capital of the Dutch East Indies. The area corresponds to present-day Jakarta, Indonesia. Batavia can refer to the city proper or its suburbs and hinterland, the , which included the much larger area of the Residency of Batavia in the present-day Indonesian provinces of Jakarta, Banten and West Java. The founding of Batavia by the Dutch in 1619, on the site of the ruins of History of Jakarta, Jayakarta, led to the establishment of a Dutch colony; Batavia became the center of the Dutch East India Company's trading network in Asia. Monopolies on local produce were augmented by non-indigenous cash crops. To safeguard their commercial interests, the company and the colonial administration absorbed surrounding territory. Batavia is on the north coast of Java, in a sheltered bay, on a land of marshland and hills crisscrossed with canals. The city had two centers: Kota Tua Jakarta, Oud Batavia (the oldest part of the city) and Sawah Besar, Weltevreden (the relatively n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perboewatan
Perboewatan (also spelled Perbuatan or Perbuwatan; apparently a Malay word of uncertain derivation) was one of the three main volcanic cones (the others being Danan and Rakata) on the island of Krakatoa (or Krakatau), in the Sunda Strait, in Indonesia. It was the lowest (121 m) and northernmost of the cones. Perboewatan was completely destroyed during the 1883 eruption; the caldera is approximately deep at its former location. Photographed on May 27, 1883 by visitors to the island, Perboewatan is the only cone on Krakatoa of which quality pre-1883 photographs exist. In the photos, it appears to be a low hill with a flat top. Climbers reported the erupting crater to be about across at the top, narrowing to at the bottom and 150–240 m deep. Samples were collected, revealing upon analysis a silica (SiO2) content of 65%. In February 1681, two individuals traveling through the Straits witnessed the eruption of Krakatoa. Johann Wilhelm Vogel, a mining assayer, was told that the er ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strombolian Eruption
In volcanology, a Strombolian eruption is a type of volcanic eruption with relatively mild blasts, typically having a Volcanic Explosivity Index of 1 or 2. Strombolian eruptions consist of ejection of incandescent Scoria, cinders, lapilli, and volcanic bombs, to altitudes of tens to a few hundreds of metres. The eruptions are small to medium in volume, with sporadic violence. This type of eruption is named for the Italy, Italian volcano Stromboli. The tephra typically glows red when leaving the vent, but its surface cools and assumes a dark to black colour and may significantly solidify before impact. The tephra accumulates in the vicinity of the vent, forming a cinder cone. Cinder is the most common product; the amount of volcanic ash is typically rather minor. The lava flows are more viscous, and therefore shorter and thicker, than the corresponding Hawaiian Eruption, Hawaiian eruptions; it may or may not be accompanied by production of pyroclastic rock. Instead the gas coale ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earthquake
An earthquakealso called a quake, tremor, or tembloris the shaking of the Earth's surface resulting from a sudden release of energy in the lithosphere that creates seismic waves. Earthquakes can range in intensity, from those so weak they cannot be felt, to those violent enough to propel objects and people into the air, damage critical infrastructure, and wreak destruction across entire cities. The seismic activity of an area is the frequency, type, and size of earthquakes experienced over a particular time. The seismicity at a particular location in the Earth is the average rate of seismic energy release per unit volume. In its most general sense, the word ''earthquake'' is used to describe any seismic event that generates seismic waves. Earthquakes can occur naturally or be induced by human activities, such as mining, fracking, and nuclear weapons testing. The initial point of rupture is called the hypocenter or focus, while the ground level directly above it is the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
