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1930 North Izu Earthquake
The 1930 North Izu earthquake (1930年北伊豆地震, ''Sen-kyūhyaku-sanjū-nen Kita-Izu Jishin'') occurred on . The epicenter was located in the northern Izu Peninsula, Japan. It had a magnitude of 7.3, and was caused by the movement of the Tanna Fault (丹那断層). Geology The Izu Peninsula is located in the northern tip of the Philippine Sea Plate. However, the GPS vectors of the Izu Peninsula are almost westwards, which are different from the northwestward motion of the Philippine Sea Plate. A seismically active area in the east off the Izu Peninsula might be the deformation zone between the Izu Peninsula and the main part of the Philippine Sea Plate or at times be regarded as the boundary between the Izu microplate and the Philippine Sea Plate. The suspected boundary may be a complex fracture zone than a simple boundary. In this view, the Izu microplate is pushed northwestwards by the Philippine Sea Plate and rotates clockwise, pivoting on the base of the Izu Peninsul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Empire Of Japan
The also known as the Japanese Empire or Imperial Japan, was a historical nation-state and great power that existed from the Meiji Restoration in 1868 until the enactment of the post-World War II 1947 constitution and subsequent formation of modern Japan. It encompassed the Japanese archipelago and several colonies, protectorates, mandates, and other territories. Under the slogans of and following the Boshin War and restoration of power to the Emperor from the Shogun, Japan underwent a period of industrialization and militarization, the Meiji Restoration, which is often regarded as the fastest modernisation of any country to date. All of these aspects contributed to Japan's emergence as a great power and the establishment of a colonial empire following the First Sino-Japanese War, the Boxer Rebellion, the Russo-Japanese War, and World War I. Economic and political turmoil in the 1920s, including the Great Depression, led to the rise of militarism, nationa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coulomb Stress Transfer
Coulomb stress transfer is a seismic-related geological process of stress changes to surrounding material caused by local discrete deformation events. Using mapped displacements of the Earth's surface during earthquakes, the computed Coulomb stress changes suggest that the stress relieved during an earthquake not only dissipates but can also move up and down fault segments, concentrating and promoting subsequent tremors. Importantly, Coulomb stress changes have been applied to earthquake-forecasting models that have been used to assess potential hazards related to earthquake activity. Coulomb stress change The Coulomb failure criterion requires that the Coulomb stress exceeds a value σf defined by the shear stress τB, normal stress σB, pore pressure p, and coefficient of friction μ of a failure plane, such that It is also often assumed that changes in pore fluid pressure induced by changes in stress are proportional to the normal stress change across the fault plane. These ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
November 1930 Events
November is the eleventh and penultimate month of the year in the Julian and Gregorian Calendars, the fourth and last of four months to have a length of 30 days and the fifth and last of five months to have a length of fewer than 31 days. November was the ninth month of the calendar of Romulus . November retained its name (from the Latin ''novem'' meaning "nine") when January and February were added to the Roman calendar. November is a month of late spring in the Southern Hemisphere and late autumn in the Northern Hemisphere. Therefore, November in the Southern Hemisphere is the seasonal equivalent of May in the Northern Hemisphere and vice versa. In Ancient Rome, Ludi Plebeii was held from November 4–17, Epulum Jovis was held on November 13 and Brumalia celebrations began on November 24. These dates do not correspond to the modern Gregorian calendar. November was referred to as Blōtmōnaþ by the Anglo-Saxons. Brumaire and Frimaire were the months on which November fell ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1930 In Japan
Events in the year 1930 in Japan. It corresponds to Shōwa 5 (昭和5年) in the Japanese calendar. Incumbents *Emperor: Hirohito *Prime Minister: Osachi Hamaguchi Events *January 1 – The Ministry of Rail adopts the metric system for all of Japan's railways. *February 4 – Prince Takamatsu marries Kikuko Tokugawa. *February 20 – 1930 Japanese general election: The Rikken Minseitō party, led by Prime Minister Osachi Hamaguchi, won an overall majority in the House of Representatives. Voter turnout was 83.34%. *May 5 – Iwatani Industry has founded in Osaka. (As predecessor name was Iwatani Naoji Shoten) *May 24–27 – 1930 Far Eastern Games held in Tokyo. *October 27–December – Wushe Incident *November 14 – Prime Minister Osachi Hamaguchi is shot inside Tokyo Station by Tomeo Sagoya in a failed assassination attempt. The wounds kept Hamaguchi hospitalized for several months. *November 18 – the Buddhist religious m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1930 Earthquakes
Year 193 ( CXCIII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Sosius and Ericius (or, less frequently, year 946 ''Ab urbe condita''). The denomination 193 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * January 1 – Year of the Five Emperors: The Roman Senate chooses Publius Helvius Pertinax, against his will, to succeed the late Commodus as Emperor. Pertinax is forced to reorganize the handling of finances, which were wrecked under Commodus, to reestablish discipline in the Roman army, and to suspend the food programs established by Trajan, provoking the ire of the Praetorian Guard. * March 28 – Pertinax is assassinated by members of the Praetorian Guard, who storm the imperial palace. The Empire is auctioned off ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Earthquakes In Japan
This is a list of earthquakes in Japan with either a magnitude greater than or equal to 7.0 or which caused significant damage or casualties. As indicated below, magnitude is measured on the Richter magnitude scale (''ML'') or the moment magnitude scale (''Mw''), or the surface wave magnitude scale (''Ms'') for very old earthquakes. The present list is not exhaustive, and furthermore reliable and precise magnitude data is scarce for earthquakes that occurred before the development of modern measuring instruments. History Although there is mention of an earthquake in Yamato in what is now Nara Prefecture on August 23, 416, the first earthquake to be reliably documented took place in Nara prefecture on May 28, 599 during the reign of Empress Suiko, destroying buildings throughout Yamato province.Hammer, Joshua. (2006). ''Yokohama Burning: The Deadly 1923 Earthquake and Fire that Helped Forge the Path to World War II,'' p. 62–63.Ishibashi, K. (2004);Status of historical seismolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Earthquakes In 1930
This is a list of earthquakes in 1930. Only magnitude 6.0 or greater earthquakes appear on the list. Lower magnitude events are included if they have caused death, injury or damage. Events which occurred in remote areas will be excluded from the list as they wouldn't have generated significant media interest. All dates are listed according to UTC time. Many earthquakes caused deaths and destruction of property. 1930 Irpinia earthquake, Italy and 1930 Salmas earthquake, Iran bore the brunt of the casualties. Several events occurred in British rule in Burma, Burma, Empire of Japan, Japan, Republic of China (1912–1949), China and Tajik SSR, Tajikistan among others. Overall By death toll * Note: At least 10 casualties By magnitude * Note: At least 7.0 magnitude Notable events January February March April May June July August September October November December References {{Earthquakes by year Lists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tokyo Bay
is a bay located in the southern Kantō region of Japan, and spans the coasts of Tokyo, Kanagawa Prefecture, and Chiba Prefecture. Tokyo Bay is connected to the Pacific Ocean by the Uraga Channel. The Tokyo Bay region is both the most populous and largest industrialized area in Japan. Names In ancient times, Japanese knew Tokyo Bay as the . By the Azuchi–Momoyama period (1568–1600) the area had become known as after the city of Edo. The bay took its present name in modern times, after the Imperial court moved to Edo and renamed the city Tokyo in 1868. Geography Tokyo Bay juts prominently into the Kantō Plain. It is surrounded by the Bōsō Peninsula in Chiba Prefecture to the east and the Miura Peninsula in Kanagawa Prefecture to the west. The shore of Tokyo Bay consists of a diluvial plateau and is subject to rapid marine erosion. Sediments on the shore of the bay make for a smooth, continuous shoreline. Boundaries In a narrow sense, Tokyo Bay is the area north of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sagami Bay
lies south of Kanagawa Prefecture in Honshu, central Japan, contained within the scope of the Miura Peninsula, in Kanagawa, to the east, the Izu Peninsula, in Shizuoka Prefecture, to the west, and the Shōnan coastline to the north, while the island of Izu Ōshima marks the southern extent of the bay. It lies approximately southwest of the capital, Tokyo. Cities on the bay include Odawara, Chigasaki, Fujisawa, Hiratsuka, Itō, and Kamakura. History The center of the Great Kantō earthquake in 1923 was deep beneath Izu Ōshima Island in Sagami Bay. It devastated Tokyo, the port city of Yokohama, and the surrounding prefectures of Chiba, Kanagawa, and Shizuoka, and caused widespread damage throughout the Kantō region. The shallow nature of the seabed on the north of the bay, and the funnelling effect of tsunami and typhoon wave energy, contributed to certain parts of the Shonan coast having suffered considerable damage, including the destruction of the Kōtoku-in temple hou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earthquake Light
An earthquake light is a luminous aerial phenomenon that reportedly appears in the sky at or near areas of tectonic stress, seismic activity, or volcanic eruptions. There is no broad consensus as to the causes of the phenomenon (or phenomena) involved. The phenomenon differs from disruptions to electrical grids – such as arcing power lines – which can produce bright flashes as a result of ground shaking or hazardous weather conditions. Appearance One of the first records of earthquake lights is during 869 Sanriku earthquake, described as "strange lights in the sky" in Nihon Sandai Jitsuroku. The lights are reported to appear while an earthquake is occurring, although there are reports of lights before or after earthquakes, such as reports concerning the 1975 Kalapana earthquake. They are reported to have shapes similar to those of the auroras, with a white to bluish hue, but occasionally they have been reported having a wider color spectrum. The luminosity is reported to b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1923 Great Kantō Earthquake
The struck the Kantō Plain on the main Japanese island of Honshū at 11:58:44 JST (02:58:44 UTC) on Saturday, September 1, 1923. Varied accounts indicate the duration of the earthquake was between four and ten minutes. Extensive firestorms and even a fire whirl added to the death toll. Civil unrest after the disaster (i.e., the Kantō Massacre) has been documented. The earthquake had a magnitude of 7.9 on the moment magnitude scale (), with its focus deep beneath Izu Ōshima Island in Sagami Bay. The cause was a rupture of part of the convergent boundary where the Philippine Sea Plate is subducting beneath the Okhotsk Plate along the line of the Sagami Trough. Since 1960, September 1 has been designated by the Japanese government as , or a day in remembrance of and to prepare for major natural disasters including tsunami and typhoons. Drills, as well as knowledge promotion events, are centered around that date as well as awards ceremonies for people of merit. Earthquake T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Itō, Shizuoka
280px, Itō City Hall is a city located on the eastern shore of the Izu Peninsula in Shizuoka Prefecture, Japan. , the city had an estimated population of 68,773 in 36,717 households and a population density of 550 persons per km². The total area was . Geography Itō is located in eastern Shizuoka Prefecture, on the northeast corner of Izu Peninsula, facing Sagami Bay on the Pacific Ocean. The landscape is hilly, and the heavily indented coastline is scenic. Much of the coastal area of the city is within the Fuji-Hakone-Izu National Park. The city is located within the Izu-Tobu volcanic zone, and is subject to frequent earthquakes. The area is noted for its onsen hot spring resorts. Surrounding municipalities Shizuoka Prefecture *Atami *Izu *Izunokuni * Higashiizu Demographics Per Japanese census data, the population of Itō peaked in around the year 2000, and has declined slightly since. Climate The city has a climate characterized by hot and humid summers, and rel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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