Local date | June 10, 1867 |
---|---|
Local time | 04:20–04:30 |
Magnitude | 7.8 Mw |
Epicenter | 8°42′S110°36′E / 8.7°S 110.6°E |
Type | Intraslab |
Areas affected | Java |
Max. intensity | IX (Violent) |
Landslides | Yes |
Casualties | ≤700 dead |
The 1867 Central Java earthquake occurred on June 10 at between 04:20 and 04:30 local time. [1] [2] It struck off the southern coast of the Indonesian island with an estimated moment magnitude of 7.8 (Mw ). Widespread devastation occurred in Central Java, where as many as 700 people were killed. The intermediate-depth intraslab earthquake did not cause a tsunami.
Off the southern coast of Java lies an active convergent boundary that separates the Sunda Plate to the north and the Australian Plate in the south. At the boundary, marked by the Sunda Trench, the northward-moving Australian Plate subducts beneath the Sunda Plate. The subduction zone is capable of generating earthquakes of up to magnitude 8.7, while the Australian Plate may also host deeper earthquakes within the downgoing lithosphere (intraslab earthquakes) beneath the coast of Java. The subduction zone produced two destructive earthquakes and tsunamis in 2006 and 1994. An intraslab earthquake in 2009 also caused severe destruction. [3]
The mainshock may have been accompanied by a less intense but significant foreshock on May 17, 1865, and an aftershock on March 28, 1875, respectively. These events are thought to represent seismic unrest within the subducting Australian Plate. Simulation models of a shallow crustal and large subduction zone earthquake were inconsistent with the historical reports. The lack of an observed tsunami disproves the subduction zone earthquake theory, while the shallow crustal earthquake theory is not in alignment with the tectonic understanding of the island. Modelling an intraslab earthquake of magnitude 7.8 at a depth of 80 km (50 mi) agrees with the reports of widespread, high-intensity, and heavy damage. [4]
The earthquake was felt from Banten, in the western part of Java, to Negara, Bali, a distance of 900 km (560 mi). It was most destructive in the central and eastern parts of Java. An estimated Modified Mercalli intensity of VIII–IX (Severe–Violent) was assigned in Yogyakarta. [5] Shaking was felt for over two minutes in some areas. [4] [6]
In Surakarta and Yogyakarta, approximately 372 homes were destroyed or heavily damaged. A total of 1,000 homes were destroyed. The Kraton Ngayogyakarta Hadiningrat was heavily damaged. Several buildings in the Taman Sari palace complex were destroyed. Water features in the area were drained. The damaged complex eventually became a place for squatters to reside in. [7] The Sewu temple in Klaten suffered a complete collapse of its main dome structure. [8] Despite the extent of damage, only five fatalities were reported, though it may be as high as 327, [9] 500 or 700. [4] [6] In Surakarta, at least 236 people were killed. Twelve of the fatalities were Europeans. Four people were killed by collapsing stone construction at a camp in the Pekalongan Regency. Great damage was also reported in Bantul. At Salatiga, the earthquake caused a clock to stop at the time of its occurrence: 04:21, but the shaking lasted until 04:22.
On Mount Merapi, many landslides were triggered. [5] Ground fissures were also observed. In the Java Sea, a seaquake was observed but there were no reports of a tsunami. [9] Moderate damage to factory and industrial facilities was reported in Bandjardjawa. Effects from the quake were also felt on ships docked at Batavia and those located hundreds of miles away. Several houses collapsed in the Semarang Regency. In Surabaya, a church suffered cracks and a sugar factory was damaged. [4]
In the book Raden Saleh: kehidupan dan karyanya by Werner Kraus, the death toll was in the "thousands" although no exact figure was provoded. Among the people who felt and witnessed the destruction was Alfred Russel Wallace. [10]
According to the simulation results, if an earthquake of the same intensity occurred today, it is estimated to cause about 60,000 deaths. [11]
The 2006 Yogyakarta earthquake occurred at 05:53 local time on 27 May 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. With limited effects to public infrastructure and lifelines, housing and private businesses bore the majority of damage, and the United States' National Geophysical Data Center classified the total damage from the event as extreme.
An earthquake occurred on July 17, 2006 at 15:19:27 local time along a subduction zone off the coast of west and central Java, a large and densely populated island in the Indonesian archipelago. The shock had a moment magnitude of 7.7 and a maximum perceived intensity of IV (Light) in Jakarta, the capital and largest city of Indonesia. There were no direct effects of the earthquake's shaking due to its low intensity, and the large loss of life from the event was due to the resulting tsunami, which inundated a 300 km (190 mi) portion of the Java coast that had been unaffected by the earlier 2004 Indian Ocean earthquake and tsunami that was off the coast of Sumatra. The July 2006 earthquake was also centered in the Indian Ocean, 180 kilometers (110 mi) from the coast of Java, and had a duration of more than three minutes.
The 1938 Banda Sea earthquake occurred on February 2 with an estimated magnitude of 8.5–8.6 on the moment magnitude scale and a Rossi–Forel intensity of VII. This oblique-slip event generated destructive tsunamis of up to 1.5 metres in the Banda Sea region, but there were no deaths.
This is a brief summary of the geology of Indonesia. Indonesia is located between two major tectonic plates, the Australian Plate and the newly-separated Sunda Plate.
An earthquake occurred on September 2, 2009 at 14:55:01 local time in West Java, Indonesia. The magnitude 7.0 earthquake killed at least 81 people, injured over 1,297, and displaced over 210,000. The quake was felt in the capital Jakarta, although damage there was minimal, and it was Indonesia's deadliest earthquake since the 2006 Pangandaran earthquake and tsunami.
The 1797 Sumatra earthquake occurred at 22:00 local time on February 10. It was the first in a series of great earthquakes that ruptured part of the Sumatran segment of the Sunda megathrust. It caused a damaging tsunami that was particularly severe near Padang, where a 150–200 ton English ship was driven 1 km inland up the Arau River.
The 1861 Sumatra earthquake occurred on 16 February and was the last in a sequences of earthquakes that ruptured adjacent parts of the Sumatran segment of the Sunda megathrust. It caused a devastating tsunami which led to several thousand fatalities. The earthquake was felt as far away as the Malay peninsula and the eastern part of Java. The rupture area for the 2005 Nias–Simeulue earthquake is similar to that estimated for the 1861 event.
The 1935 Sumatra earthquake occurred at 09:35 local time on 28 December. It had a magnitude of Mw 7.7 and a maximum felt intensity of VII (Damaging) on the European macroseismic scale. It triggered a minor tsunami.
The 1941 Andaman Islands earthquake struck the Andaman Islands on June 26 with a magnitude of 7.7 to 8.1. Details of this event are poorly known as much of Southeast Asia was in the turmoil of World War II. The quake caused severe damage in the Andaman Islands. The tsunami it triggered was reported along the Andaman and Nicobar Islands, India and British Ceylon. There may have been damage and deaths in Bangladesh, Myanmar, and Thailand due to the tsunami.
The 1988 Myanmar–India earthquake, also known as the Indo–Burma earthquake struck the Sagaing Region of Myanmar, about 30 kilometres (19 mi) from the border with India on 6 August at 7:06 am MMT with a moment magnitude (Mw ) of 7.3 or Richter magnitude (ML ) of 7.5. At least five people were killed, more than 30 were injured, and another 30 were missing as a result. Serious damage was reported in India and Bangladesh, while some minor damage occurred in Myanmar. The earthquake was reportedly felt in the Soviet Union.
The western coast of West Sulawesi was struck by a major earthquake on 23 February 1969 at 00:36 UTC. It had a magnitude of 7.0 Mw and a maximum felt intensity of VIII on the Modified Mercalli intensity scale. It triggered a major tsunami that caused significant damage along the coast of the Makassar Strait. At least 64 people were killed, with possibly a further 600 deaths caused by the tsunami.
The 1942 Ecuador earthquake or the Guayaquil earthquake occurred on 13 May at 9:06 or 9:13 pm local time with a moment magnitude of Mw 7.9. The temblor struck the coastal (Esmeraldas) region of Manabí Province, Ecuador. It caused damage mainly to cities including Guayaquil, Portoviejo and Guaranda. More than 300 people were killed and the total cost of damage was about US$2.5 million. Ecuador's largest city Guayaquil was the most affected despite the significant distantce from the epicenter. Many reinforced concrete structures in a particular area in the city were completely destroyed, contributing to fatalities.
The 1852 Banda Sea earthquake struck on 26 November at 07:40 local time, affecting coastal communities on the Banda Islands. It caused violent shaking lasting five minutes, and was assigned XI on the Modified Mercalli intensity scale in the Maluku Islands. A tsunami measuring up to 8 m (26 ft) slammed into the islands of Banda Neira, Saparua, Haruku and Ceram. The tsunami caused major damage, washing away many villages, ships and residents. At least 60 people were killed in the earthquake and tsunami. The earthquake had an estimated moment magnitude of 7.5 or 8.4–8.8, according to various academic studies.
On the morning of January 5, 1699, a violent earthquake rocked the then Dutch East Indies city of Batavia on the island of Java, now known as the Indonesian capital city of Jakarta. Dutch accounts of the event described the earthquake as being "so heavy and strong" and beyond comparable to other known earthquakes. This event was so large that it was felt throughout west Java, and southern Sumatra.
The 1834 Java earthquake struck the Dutch East Indies island of Java, in the city of Bogor. The earthquake occurred on the morning of October 11, 1834. It was assigned VIII (Severe) to IX (Violent) on the Modified Mercalli intensity scale.
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.
The 1843 Nias earthquake off the northern coast of Sumatra, Indonesia caused severe damage when it triggered a tsunami along the coastline. The earthquake with a moment magnitude (Mw ) of 7.8 lasted nine minutes, collapsing many homes in Sumatra and Nias. It was assigned a maximum modified Mercalli intensity of XI (Extreme).
The Shōnai offshore earthquake occurred at around 14:00 on December 7, 1833. It struck with an epicenter in the Sea of Japan, off the coast of Yamagata Prefecture, Japan. A tsunami was triggered by the estimated MJMA 7.5–7.7 earthquake. One hundred and fifty people were killed and there was severe damage in the prefecture.
The 1940 Shakotan earthquake occurred on August 2 at 00:08:22 JST with a moment magnitude (Mw ) of 7.5 and maximum JMA seismic intensity of Shindo 4. The shock had an epicenter off the coast of Hokkaido, Japan. Damage from the shock was comparatively light, but the accomanying tsunami was destructive. The tsunami caused 10 deaths and 24 injuries on Hokkaido, and destroyed homes and boats across the Sea of Japan. The highest tsunami waves were recorded at the coast of Russia while along the coast of Hokkaido, waves were about 2 m.
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