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1556 Shaanxi Earthquake
The 1556 Shaanxi earthquake (formerly romanized ''Shensi''), known in Chinese colloquially by its regnal year as "" ('' Jiājìng Dàdìzhèn'') or officially by its epicenter as "" ('' Huàxiàn Dìzhèn''), occurred in the early morning of 23 January 1556 in Huaxian, Shaanxi during the Ming dynasty. Most of the residents there lived in yaodongs—artificial caves in loess cliffs—which collapsed and buried alive those sleeping inside. Modern estimates put the direct deaths from the earthquake at over 100,000, while over 700,000 migrated away or died from famine and plagues, which summed up to a total loss of 830,000 people in Imperial records.颤抖的地球—地震科学' rembling Earth: On Seismology(2005). Researched by China Earthquake Administration seismologists 冯万鹏,薑文亮,龚丽霞,公茂盛,胡进军; Revised by CEA seismologists 王文清,续春荣,张宝红; Edited by CEA chiefs 谢礼立,张景发. Tsinghua University Press. Pages XIII, 162. "1556年陕 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yaodong
A yaodong () or "house cave" is a particular form of earth shelter dwelling common in the Loess Plateau in China's north. They are generally carved out of a hillside or excavated horizontally from a central "sunken courtyard". The earth that surrounds the indoor space serves as an effective insulator, keeping the inside of the structure warm in cold seasons and cool in hot seasons. Consequently, very little heating is required in winter, and in summer, it is as cool as an air-conditioned room. The history of yaodongs goes back centuries, and they continue to be used. In 2006, an estimated 40 million people in northern China lived in yaodongs. In the last decade, yaodongs have been brought to the attention of scientists and researchers. These traditional dwellings have been regarded as an example of sustainable design. Types The landscape of the Loess Plateau terrain is very complicated, with valleys, slopes, ridges, and monticules. In order to avoid the wind and utilize s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Julian Calendar
The Julian calendar, proposed by Roman consul Julius Caesar in 46 BC, was a reform of the Roman calendar. It took effect on , by edict. It was designed with the aid of Greek mathematicians and astronomers such as Sosigenes of Alexandria. The calendar became the predominant calendar in the Roman Empire and subsequently most of the Western world for more than 1,600 years until 1582, when Pope Gregory XIII promulgated a minor modification to reduce the average length of the year from 365.25 days to 365.2425 days and thus corrected the Julian calendar's drift against the solar year. Worldwide adoption of this revised calendar, which became known as the Gregorian calendar, took place over the subsequent centuries, first in Catholic countries and subsequently in Protestant countries of the Western Christian world. The Julian calendar is still used in parts of the Eastern Orthodox Church and in parts of Oriental Orthodoxy as well as by the Berbers. The Julian calenda ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shanxi Rift System
The Shanxi Rift System or Fen–Wei Rift System is a zone of active extensional tectonics that forms the eastern margin of the Ordos Block in northern China. The zone extends for at least and runs south-southwest to north-northeast. The individual rift basins that make up the rift system have an overall en echelon geometry, consistent with a right lateral sense of strike-slip displacement across the zone. The basins contain a thick sedimentary sequence of Neogene age, which ranges from in thickness. The rift system is continuous with the Weihe Basin to the southwest, which became active during the Paleogene. Rupture of the major normal faults that bound the Weihe and Shanxi rift basins has caused many large and damaging historical earthquakes, including the 1303 Hongdong (>200,000 deaths), 1556 Shaanxi (830,000 deaths), 1626 Lingqiu (>5,200 deaths), 1695 Linfen (>52,600 deaths) and 1815 Pinglu (>13,000 deaths) events. Nomenclature The Shanxi Rift System is named for the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
China
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and borders fourteen countries by land, the most of any country in the world, tied with Russia. Covering an area of approximately , it is the world's third largest country by total land area. The country consists of 22 provinces, five autonomous regions, four municipalities, and two Special Administrative Regions (Hong Kong and Macau). The national capital is Beijing, and the most populous city and financial center is Shanghai. Modern Chinese trace their origins to a cradle of civilization in the fertile basin of the Yellow River in the North China Plain. The semi-legendary Xia dynasty in the 21st century BCE and the well-attested Shang and Zhou dynasties developed a bureaucratic political system to serve hereditary monarchies, or dyna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aftershock
In seismology, an aftershock is a smaller earthquake that follows a larger earthquake, in the same area of the main shock, caused as the displaced crust adjusts to the effects of the main shock. Large earthquakes can have hundreds to thousands of instrumentally detectable aftershocks, which steadily decrease in magnitude and frequency according to a consistent pattern. In some earthquakes the main rupture happens in two or more steps, resulting in multiple main shocks. These are known as doublet earthquakes, and in general can be distinguished from aftershocks in having similar magnitudes and nearly identical seismic waveforms. Distribution of aftershocks Most aftershocks are located over the full area of fault rupture and either occur along the fault plane itself or along other faults within the volume affected by the strain associated with the main shock. Typically, aftershocks are found up to a distance equal to the rupture length away from the fault plane. The pattern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Natural Disasters By Death Toll
A natural disaster is a sudden event that always causes widespread destruction, major collateral damage or loss of life, brought about by forces other than the acts of human beings. A natural disaster might be caused by earthquakes, flooding, volcanic eruption, landslide, hurricanes etc. To be classified as a disaster, it will have profound environmental effect and/or human loss and frequently causes financial loss. Ten deadliest natural disasters by highest estimated death toll excluding epidemics and famines This list takes into account only the highest estimated death toll for each disaster, and lists them accordingly. It does not include epidemics and famines. It does not include several volcanic eruptions with uncertain death tolls resulting from collateral effects such as crop failures; see List of volcanic eruptions by death toll. The list also does not include the 1938 Yellow River flood, which was caused by the deliberate destruction of dikes. Deadliest natural disa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercalli Scale
The Modified Mercalli intensity scale (MM, MMI, or MCS), developed from Giuseppe Mercalli's Mercalli intensity scale of 1902, is a seismic intensity scale used for measuring the intensity of shaking produced by an earthquake. It measures the effects of an earthquake at a given location, distinguished from the earthquake's inherent force or strength as measured by seismic magnitude scales (such as the "" magnitude usually reported for an earthquake). While shaking is caused by the seismic energy released by an earthquake, earthquakes differ in how much of their energy is radiated as seismic waves. Deeper earthquakes also have less interaction with the surface, and their energy is spread out across a larger volume. Shaking intensity is localized, generally diminishing with distance from the earthquake's epicenter, but can be amplified in sedimentary basins and certain kinds of unconsolidated soils. Intensity scales empirically categorize the intensity of shaking based on the effect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moment Magnitude Scale
The moment magnitude scale (MMS; denoted explicitly with or Mw, 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. It was defined in a 1979 paper by Thomas C. Hanks and Hiroo Kanamori. Similar to the local magnitude scale, 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 says "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 saturate—that 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 U.S. Geological ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huayin
Huayin is a county-level city in Weinan, Shaanxi province, China. Prior to 1990, Huayin was regarded as a county. Huayin literally means 'to the north of Mount Hua Mount Hua () is a mountain located near the city of Huayin in Shaanxi Province, about east of Xi'an. It is the "Western Mountain" of the Five Great Mountains of China and has a long history of religious significance. Originally classified as ...', because it is to the north of that mountain. Administrative divisions As 2019, Huayin City is divided to 2 subdistricts, 4 towns and 1 other. ;Subdistricts * Taihualu Subdistrict () * Yuemiao Subdistrict ( ;Towns ;Others * State-owned Shaanxi Huashan Enterprise Companyown () Climate References Cities in Shaanxi {{Shaanxi-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weinan
Weinan () is a prefecture-level city in the east central Shaanxi province, China. The city lies on the lower section of the Wei River confluence into the Yellow River, about east of the provincial capital Xi'an, and borders the provinces of Shanxi and Henan to the east. The name "Weinan", literally meaning "south of the Wei River", describes the location of the city's urban districts being mostly south of the Wei River, although majority of its metropolitan area actually lies on the north side of the river. History As a significant area between the ancient Chinese capital Xi'an and Luoyang, Weinan has a long history. Ancient The ancient Dali Man lived in the modern area of Weinan. The Xiagui county was settled in the year of 668 BC by the state of Qin. Weinan got its name in the year of 360 by the Former Qin state. In the Tang Dynasty, 10 emperors were buried in Weinan after their death. On the morning of 23 January 1556, the deadliest earthquake on record with its epicente ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huazhou District
Huazhou District (), formerly Hua County or Huaxian (), is a district of Weinan, Shaanxi province, China. It was upgraded from a county to a district in 2015. The district spans an area of , and has a population of about 324,300 as of 2012. History During the Western Zhou period, the area belonged to the State of Zheng. During the Spring and Autumn period, the State of Qin established in the area of present-day Huazhou. Zheng County was put under the jurisdiction of Hua Prefecture. Early in the Yuan dynasty, Zheng County was merged into Hua Prefecture. The epicenter of the 1556 Shaanxi earthquake was in Huazhou District. In 1913, Hua Prefecture was re-organized as Hua County. On May 23, 1949, the area was taken by forces of the People's Liberation Army. In 1958, Hua County was placed under the jurisdiction of Weinan County, which soon became Weinan Prefecture in 1961, and was upgraded to a prefecture-level city in 1994. In October 2015, Hua County was upgraded to Hu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wei River
The Wei River () is a major river in west-central China's Gansu and Shaanxi provinces. It is the largest tributary of the Yellow River and very important in the early development of Chinese civilization. The source of the Wei River is close to Weiyuan County''Wei yuan'' meaning "Wei's source"in Gansu province, less than from the Yellow River at Lanzhou. However, due to the sharp turn north the Yellow River takes in Lanzhou, the Wei and the Yellow River do not meet for more than further along the Yellow River's course. In a direct line, the Wei's source lies west of the main city along its course, Xi'an in Shaanxi province. The length of the river is and the area drained covers . The Wei River's tributaries include the Luo River, Jing River, Niutou River, Feng River and the Chishui River. The Wei River valley has a continental climate, with hot summers and cool, dry winters. It sits between the arid steppes and deserts to the north and the forests of the Qingling mountai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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