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Vrancea County
Vrancea () is a county ( județ) in Romania, with its seat at Focșani. It is mostly in the historical region of Moldavia but the southern part, below the Milcov River, is in Muntenia. Demographics In 2011, it had a population of 340,310 and a population density of . * Romanians – over 98% * Romani, others – 2% Geography Vrancea County's area is of . A curvedly shaped mountainous area, known in Romanian as the '' Carpații de Curbură'', lies in the western part of the county, at the Southern end of the Eastern Carpathians, with heights over . To the East, the heights decrease into hilly areas and the lower valley of the Siret River. The main tributary of the Siret, which crosses the county, is the Putna River. Seismic hazard The territory of Vrancea County is the most seismically active zone of Romania, with yearly earthquakes whose focal depths are between and therefore affect wide regions. The earthquakes with the epicenter in Vrancea are caused by the movem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Counties Of Romania
, alt_name = , alt_name1 = , alt_name2 = , alt_name3 = , alt_name4 = , map = , category = Unitary state , territory = Romania , upper_unit = , start_date = 1995 (Current form, 41 + Bucharest) , start_date1 = 1859 (33) , start_date2 = 1926 (71) , start_date3 = 1941 (73) , start_date4 = 1968 (38 + Bucharest + Ilfov Agricultural Sector) , start_date5 = 1981 (40 + Bucharest) , legislation_begin = , legislation_begin1 = , legislation_begin2 = , legislation_begin3 = , legislation_begin4 = , legislation_end = , legislation_end1 = , legislation_end2 = , legislation_end3 = , legislation_end4 = , end_date =1950–1968 , end_date1 = , end_date2 = , end_date3 = , end_date4 = , current_number = 41 , number_date = 1995 , type ... [...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] |
1802 Vrancea Earthquake
The 1802 Vrancea earthquake occurred in the Vrancea Mountains of today's Romania (then Moldavia) on , on St. Paraskeva's Day. With an estimated intensity of 7.9 on the moment magnitude scale, it is the strongest earthquake ever recorded in Romania and one of the strongest in European history. It was felt across an area of more than two million square kilometers in Eastern Europe and the Balkans, from Saint Petersburg to the Aegean Sea. In Bucharest, the earthquake had an estimated intensity of VIII–IX on the Mercalli scale. It toppled church steeples and caused the Cotroceni Monastery to collapse. Numerous fires broke out, mainly from overturned stoves. In the Ottoman Empire (today's Bulgaria), the cities of Ruse, Varna and Vidin were almost completely destroyed. The force of the earthquake cracked walls as far north as Moscow. The main quake was followed by a series of aftershocks, of which the largest had a magnitude of 5.5. Damage and casualties The main shock hit Buchare ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1940 Vrancea Earthquake
The 1940 Vrancea earthquake, also known as the 1940 Bucharest earthquake, ( ro, Cutremurul din 1940) occurred on Sunday, 10 November 1940, in Romania, at 03:39 (local time), when the majority of the population was at home. The 1940 earthquake registered a magnitude of 7.7 on the moment magnitude scale, being the strongest earthquake recorded in the 20th century in Romania. Its epicenter lay in the Vrancea Mountains, Vrancea zone at a depth of about 133 km. The area of maximum intensity for this earthquake was 80,000 km2 and macroseismic effects were felt over an area of more than 2,000,000 km2. Effects were reported to the north as far away as Leningrad, over 1,300 km away, with estimated seismic intensities of IV–V (MCS degrees), to the south, as far as Greece, to the east, up to the Kharkiv, Kharkov–Moscow line, with estimated intensities of V–VI (MCS degrees), in the west, as far as Belgrade, Budapest and Warsaw. Tectonic setting Vrancea lies within ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulgaria
Bulgaria (; bg, България, Bǎlgariya), officially the Republic of Bulgaria,, ) is a country in Southeast Europe. It is situated on the eastern flank of the Balkans, and is bordered by Romania to the north, Serbia and North Macedonia to the west, Greece and Turkey to the south, and the Black Sea to the east. Bulgaria covers a territory of , and is the sixteenth-largest country in Europe. Sofia is the nation's capital and largest city; other major cities are Plovdiv, Varna and Burgas. One of the earliest societies in the lands of modern-day Bulgaria was the Neolithic Karanovo culture, which dates back to 6,500 BC. In the 6th to 3rd century BC the region was a battleground for ancient Thracians, Persians, Celts and Macedonians; stability came when the Roman Empire conquered the region in AD 45. After the Roman state splintered, tribal invasions in the region resumed. Around the 6th century, these territories were settled by the early Slavs. The Bulgars, led by Asp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1977 Vrancea Earthquake
The 1977 Vrancea earthquake occurred on 4 March 1977, at 21:22 local time, and was felt throughout the Balkans. It had a magnitude of 7.5, making it the second most powerful earthquake recorded in Romania in the 20th century, after the 10 November 1940 seismic event. The hypocenter was situated in the Vrancea Mountains, the most seismically active part of Romania, at a depth of 85.3 km. The earthquake killed about 1,578 people (1,424 in Bucharest) in Romania, and wounded more than 11,300. Among the victims were actor Toma Caragiu and writers A. E. Bakonsky, Alexandru Ivasiuc and Corneliu M. Popescu. Communist ruler Nicolae Ceaușescu suspended his official visit to Nigeria and declared a state of emergency. About 32,900 buildings were damaged or destroyed. Immediately after the earthquake, 35,000 families were without shelter. The economic losses are believed to have been as high as two billion US dollars though the sum was not confirmed by the authorities at that time. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Earthquakes In Vrancea County ...
This is a list of earthquakes in Vrancea County. * Note: The list includes only at least M5.0 earthquakes. See also * List of earthquakes in Romania {{Earthquakes in Romania Vrancea Vrancea County Earthquakes Earthquakes An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves. Earthquakes can range in intensity, from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richter Magnitude Scale
The Richter scale —also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale—is a measure of the strength of earthquakes, developed by Charles Francis Richter and presented in his landmark 1935 paper, where he called it the "magnitude scale". This was later revised and renamed the local magnitude scale, denoted as ML or . Because of various shortcomings of the original scale, most seismological authorities now use other similar scales such as the moment magnitude scale () to report earthquake magnitudes, but much of the news media still erroneously refers to these as "Richter" magnitudes. All magnitude scales retain the logarithmic character of the original and are scaled to have roughly comparable numeric values (typically in the middle of the scale). Due to the variance in earthquakes, it is essential to understand the Richter scale uses logarithms simply to make the measurements manageable (i.e., a magnitude 3 quake factors ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fault Block
Fault blocks are very large blocks of rock, sometimes hundreds of kilometres in extent, created by tectonic and localized stresses in Earth's crust. Large areas of bedrock are broken up into blocks by faults. Blocks are characterized by relatively uniform lithology. The largest of these fault blocks are called crustal blocks. Large crustal blocks broken off from tectonic plates are called terranes. Those terranes which are the full thickness of the lithosphere are called microplates. Continent-sized blocks are called variously ''microcontinents, continental ribbons, H-blocks, extensional allochthons and outer highs.'' Because most stresses relate to the tectonic activity of moving plates, most motion between blocks is horizontal, that is parallel to the Earth's crust by strike-slip faults. However vertical movement of blocks produces much more dramatic results. Landforms (mountains, hills, ridges, lakes, valleys, etc.) are sometimes formed when the faults have a large v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epicenter
The epicenter, epicentre () or epicentrum in seismology is the point on the Earth's surface directly above a hypocenter or focus, the point where an earthquake or an underground explosion originates. Surface damage Before the instrumental period of earthquake observation, the epicenter was thought to be the location where the greatest damage occurred, but the subsurface fault rupture may be long and spread surface damage across the entire rupture zone. As an example, in the magnitude 7.9 Denali earthquake of 2002 in Alaska, the epicenter was at the western end of the rupture, but the greatest damage was about away at the eastern end. Focal depths of earthquakes occurring in continental crust mostly range from . Continental earthquakes below are rare whereas in subduction zone earthquakes can originate at depths deeper than . Epicentral distance During an earthquake, seismic waves propagate in all directions from the hypocenter. Seismic shadowing occurs on the opposite s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Putna (Siret)
The Putna is a right tributary of the river Siret in Vrancea County in Romania, in the historical region of Moldavia. It discharges into the Siret in Călienii Noi, near Vulturu. e-calauza.ro Hydrography The river basin of the Putna has a total surface of ; 31% of this surface is located in the mountain area, draining the eastern flank of the . The total length of the Putna from its source to its confluence with the Siret is .[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
