|
2025 Tibet Earthquake
On 7 January 2025 at 09:05 China Standard Time, CST (UTC+8), an earthquake measuring struck Tingri County, located in the Shigatse prefecture-level city of the Tibet Autonomous Region of Southwestern China. Between 126 and 400 people were killed and 338 were injured in the region. The earthquake also injured 13 people in Nepal and caused minor damage in North India, Northern India. Shaking was felt across South Asia. The earthquake was the largest in China since the 2021 Maduo earthquake, Maduo earthquake in May 2021 and the deadliest since the 2023 Jishishan earthquake, Jishishan earthquake in December 2023. It was caused by Fault (geology)#Normal faults, normal faulting and originated within the continental crust at depth. Tectonic setting The Tibetan plateau attains its high elevation due to crustal thickening caused by the collision of the Indian plate, Indian tectonic plate with the Eurasian plate, creating the Himalayas. Fault (geology), Faulting within the plateau is ass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tingri County
Tingri County (; zh, s=定日县, t=定日縣, p=Dìngrì Xiàn) is a county under the administration of the prefecture-level city of Xigazê in the Tibet Autonomous Region of China. The county comprises the upper valley of the Bum-chu or Arun River, with the valleys of its tributaries, the valleys of the Rongshar Tsangpo and the Lapchi Gang Tsanpo which flow south into Nepal. It is bordered on the south by the main range of the Himalayas, including Mount Everest (Tib. Jomolangma), Makalu and Cho Oyu. The present county administration is located at Shelkar, about east of Tingri (town). Tingri is one of the four counties (the other three being Dinjie, Nyalam, and Kyirong) that comprise the Qomolangma National Nature Preserve, a protected area spanning 3.381 million hectares. Toponymy Tingri County is named after a nearby hill, which itself is reportedly named after the sound a falling stone made when it hit the hill. History Shelkar Dzong was built in the area ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agence France-Presse
Agence France-Presse (; AFP) is a French international news agency headquartered in Paris, France. Founded in 1835 as Havas, it is the world's oldest news agency. With 2,400 employees of 100 nationalities, AFP has an editorial presence in 260 cities across 150 countries. Its main regional headquarters are based in Nicosia, Montevideo, Hong Kong and Washington, D.C. AFP publishes stories, videos, photos and graphics in French, English, Arabic, Portuguese, Spanish, and German. Two-thirds of its turnover comes from its own commercial activities, with the remaining one-third being provided by the French government (amounting to 113.3 million euros in 2022) as compensation for carrying out its mission of general interest. In December 2024, AFP was ranked as the 27th most visited news site in the world, with over 105 million monthly readers. History Agence France-Presse has its origins in the Agence Havas, founded in 1835 in Paris by Charles-Louis Havas, making it the world's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
China Earthquake Networks Center
The China Earthquake Networks Center (CENC; ) is an institution under the China Earthquake Administration. Established on October 18, 2004, it is one of the most important hubs of China's earthquake disaster reduction network and the basis of information for the international community. It is responsible for the operational guidance and management of the national seismic network, short-term earthquake prediction, earthquake data collection, report processing, scientific journal management, seismological construction, technological research and operations for emergency response and relief including the State Council of the People's Republic of China's earthquake relief headquarters. References Emergency management in China Seismological observatories, organisations and projects {{China-org-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moment Magnitude
The moment magnitude scale (MMS; denoted explicitly with or Mwg, and generally implied with use of a single M for magnitude) is a measure of an earthquake's magnitude ("size" or strength) based on its seismic moment. was defined in a 1979 paper by Thomas C. Hanks and Hiroo Kanamori. Similar to the local magnitude/Richter scale () defined by Charles Francis Richter in 1935, it uses a logarithmic scale; small earthquakes have approximately the same magnitudes on both scales. Despite the difference, news media often use the term "Richter scale" when referring to the moment magnitude scale. Moment magnitude () is considered the authoritative magnitude scale for ranking earthquakes by size. It is more directly related to the energy of an earthquake than other scales, and does not saturatethat is, it does not underestimate magnitudes as other scales do in certain conditions. It has become the standard scale used by seismological authorities like the United States Geological SurveyTh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Geological Survey
The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on March 3, 1879, to study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The agency also makes maps of planets and moons, based on data from U.S. space probes. The sole scientific agency of the U.S. Department of the Interior, USGS is a fact-finding research organization with no regulatory responsibility. It is headquartered in Reston, Virginia, with major offices near Lakewood, Colorado; at the Denver Federal Center; and in NASA Research Park in California. In 2009, it employed about 8,670 people. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on its hundredth anniversary, was "Earth Science in the Pub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Aftershocks Of The April 2015 Nepal Earthquake
The following is a list of aftershocks that occurred after the earthquake in Nepal on 25 April 2015. There was some seismic activity in the Jumla district before the main shock. However, they are not foreshocks to the main shock. , over 304 aftershocks have occurred. The large number of aftershocks after the earthquake is considered normal by seismologists. According to seismologist Roger Musson, the standard pattern for aftershocks is that the biggest aftershock will be one day after, and one magnitude less. Thus, the 6.7 magnitude aftershock on 26 April 2015 following the 7.8 magnitude main shock would fit this pattern. It is highly unlikely that the earthquake was a foreshock preceding an even larger earthquake. Therefore, an earthquake larger than 7.8 in the near future after 25 April 2015 is not expected. List of aftershocks 5.0 and higher The list below is incomplete and maybe inaccurate for some aftershocks. Note: The list below shows bigger earthquakes only. Notes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geophysical Journal International
''Geophysical Journal International'' (GJI) is a monthly Peer review, peer-reviewed scientific journal in the field of geophysics. It is published by Oxford University Press on behalf of two learned societies: the Royal Astronomical Society (RAS) and the Deutsche Geophysikalische Gesellschaft (German Geophysical Society, DGG), who select and peer-review the contents. GJI was formed in 1988 by the merger of three earlier geophysics journals, the oldest of which was established in 1922. The editor-in-chief is Joerg Renner (Ruhr University Bochum). The journal publishes original research papers, research notes, letters, and book reviews. Its topical scope includes research on all aspects of theoretical, computational, applied and observational geophysics. History GJI was formed by a complex series of mergers between previous geophysical journals. Its origins can be traced to 1919, when the RAS absorbed the Geophysical Committee (which had previously been part of the British Assoc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strike-slip Tectonics
Strike-slip tectonics or wrench tectonics is a type of tectonics that is dominated by lateral (horizontal) movements within the Earth's crust (and lithosphere). Where a zone of strike-slip tectonics forms the boundary between two tectonic plates, this is known as a transform or conservative plate boundary. Areas of strike-slip tectonics are characterised by particular deformation styles including: ''stepovers'', ''Riedel shears'', ''flower structures'' and ''strike-slip duplexes''. Where the displacement along a zone of strike-slip deviates from parallelism with the zone itself, the style becomes either transpressional or transtensional depending on the sense of deviation. Strike-slip tectonics is characteristic of several geological environments, including oceanic and continental transform faults, zones of oblique collision and the deforming foreland of zones of continental collision. Deformation styles Stepovers When strike-slip fault zones develop, they typically form as sev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graben
In geology, a graben () is a depression (geology), depressed block of the Crust (geology), crust of a planet or moon, bordered by parallel normal faults. Etymology ''Graben'' is a loan word from German language, German, meaning 'ditch' or 'trench'. The first known usage of the word in the geologic context was by Eduard Suess in 1883. The plural form is either ''graben'' or ''grabens''. Formation A graben is a valley with a distinct escarpment on each side caused by the displacement of a block of land downward. Graben often occur side by side with Horst (geology), horsts. Horst and graben structures indicate tensional forces and crustal stretching. Graben are produced by sets of normal faults that have parallel fault traces, where the displacement of the hanging wall is downward, while that of the footwall is upward. The faults typically dip toward the center of the graben from both sides. Horsts are parallel blocks that remain between graben; the bounding faults of a horst t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extensional Tectonics
Extensional tectonics is concerned with the structures formed by, and the Tectonics, tectonic processes associated with, the stretching of a planetary body's Crust (geology), crust or lithosphere. Deformation styles The types of structure and the geometries formed depend on the amount of stretching involved. Stretching is generally measured using the parameter ''β'', known as the ''beta factor'', where : \beta = \frac \,, ''t''0 is the initial crustal thickness and ''t''1 is the final crustal thickness. It is also the equivalent of the Strain (materials science), strain parameter ''stretch''. Low beta factor In areas of relatively low crustal stretching, the dominant structures are high to moderate angle normal faults, with associated half grabens and tilted block faulting, tilted fault blocks. High beta factor In areas of high crustal stretching, individual extensional faults may become rotated to too low a dip to remain active and a new set of faults may be generated. Lar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Himalayas
The Himalayas, or Himalaya ( ), is a mountain range in Asia, separating the plains of the Indian subcontinent from the Tibetan Plateau. The range has some of the Earth's highest peaks, including the highest, Mount Everest. More than list of highest mountains on Earth, 100 peaks exceeding elevations of above sea level lie in the Himalayas. The Himalayas abut on or cross territories of Himalayan states, six countries: Nepal, China, Pakistan, Bhutan, India and Afghanistan. The sovereignty of the range in the Kashmir region is disputed among India, Pakistan, and China. The Himalayan range is bordered on the northwest by the Karakoram and Hindu Kush ranges, on the north by the Tibetan Plateau, and on the south by the Indo-Gangetic Plain. Some of the world's major rivers, the Indus River, Indus, the Ganges river, Ganges, and the Yarlung Tsangpo River, Tsangpo–Brahmaputra River, Brahmaputra, rise in the vicinity of the Himalayas, and their combined drainage basin is home to some 6 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
