1986 Vrancea earthquake

Earthquake in Romania 1986 Vrancea earthquake Romania 1986-08-30 21:28:55 489699 usp0002xpm 1986 08 31 y 00:28:55 (EET) 6.5 w y NIEP 7.2 w y USGS 131 km mi 0 on 45 30 N 26 30 E inline,title 55,000 homes damaged VIII Yes 5.3 w y (16 August 1986)http://cutremurnetforum.sd4.eu/showthread.php?tid=1634 Sd4.eu 2014-05-29 2014-04-13 https://web.archive.org/web/20140413204703/http://cutremurnetforum.sd4.eu/showthread.php?tid=1634 dead 77 2 deaths, 558 injuries (official)Over 150 deaths (unofficial) Striking central Romania on August 30 at 21:28 UTC, the 1986 Vrancea earthquake killed more than 150 people, injured over 500, and damaged over 50,000 homes. The second largest earthquake in the area since the modernization of earthquake monitoring devices,Monfret Tony Deschamps, Anne Romanowicz, Barbara Barbara A. Romanowicz amp April 1990 The Romanian earthquake of August 30, 1986: A study based on GEOSCOPE very long-period and broadband data Pure and Applied Geophysics 133 2 367–379 10.1007/BF00877169 1990PApGe.133..367M 129453695 it was felt north to Poland and south to Italy and Greece. The death toll makes it the second deadliest earthquake to occur in 1986 worldwide, after major seism of San Salvador that took the lives of almost 1,500 people. One local news facility listed that the earthquake measured 6.5 on the Richter scale,https://pqasb.pqarchiver.com/chicagotribune/access/24935261.html?dids=24935261:24935261&FMT=ABS&FMTS=ABS:FT&type=current&date=Sep+01%2C+1986&author=Chicago+Tribune+wires&pub=Chicago+Tribune+(pre-1997+Fulltext)&desc=MAJOR+EARTHQUAKE+ROCKS+EASTERN+EUROPE&pqatl=google Major Earthquake Rocks Eastern Europe AGERPRES September 1, 1986 August 31, 2009 October 22, 2012 https://web.archive.org/web/20121022113824/http://pqasb.pqarchiver.com/chicagotribune/access/24935261.html?dids=24935261:24935261&FMT=ABS&FMTS=ABS:FT&type=current&date=Sep+01,+1986&author=Chicago+Tribune+wires&pub=Chicago+Tribune+(pre-1997+Fulltext)&desc=MAJOR+EARTHQUAKE+ROCKS+EASTERN+EUROPE&pqatl=google dead and the USGS listed its seismic moments as 5.6 and 7.9. A research paper of V. I. Ulomov cited this earthquake with magnitude w y 7.1.10.1134/S1069351310010015 46 1 Prediction of the seismic manifestations of Vrancea earthquakes in Moscow 2010 Izvestiya, Physics of the Solid Earth 1–18 Ulomov V. I. 2010IzPSE..46....1U 96457582 Its epicenter was somewhere in the Vrancea Mountains. The focal mechanism of the earthquake was described as "moderately well controlled", suggesting reverse faulting with some strike-slip motion. Geography The epicenter was pinpointed to Vrancea County, specifically to the Vrancea Mountains, about 110 mi km 0 flip north of Bucharest. In 1977, another strong quake ruptured oil fields in the area. Aftershocks The rupture was located at a depth of between 131 and 148 km, as revealed by the location of aftershock hypocenters. The strongest aftershock occurred in the morning of September 2, 1986, at 05:00 (EET), at 143 km depth, with magnitude 5.0 s y, and was felt in Bucharest with an intensity of about III–IV degrees on the Mercalli intensity scale. In total, 77 aftershocks were recorded with a magnitude over 3.2 on the Richter scale, of which 19 exceeded the value of 4.0 magnitude on the Richter scale."Seismicity of Romania" https://web.archive.org/web/20130212040352/http://www.infp.ro/local-seismicity/romanian-seismicity 2013-02-12 , National Institute for Earth Physics, section Vrancea subcrustal zone Damage and casualties The earthquake was felt in at least eight geographically diverse countries, affecting most of southeast Europe.https://earthquake.usgs.gov/eqcenter/eqarchives/significant/sig_1986.php Significant Earthquakes of the World: 1986 United States Geological Survey July 16, 2008 August 30, 2009 dead https://web.archive.org/web/20090227103514/http://earthquake.usgs.gov/eqcenter/eqarchives/significant/sig_1986.php February 27, 2009 The worst affected area was in the Focșani–Bârlad region, where intensity VIII (Severe) damage was recorded, causing a church to collapse. In Moldova, the earthquake had, in patches, quite severe effects. In Chișinău, four apartment buildings reportedly collapsed, resulting in at least 100 casualties; the report has never been officially confirmed. In southwestern Moldova, near the Prut floodplain, were observed subsidence of land, sand spouts and the formation of craters near the Prut riverbed. In Bucharest, 50 laborers who worked in the basement of a building died when they were crushed by piles of rubble; this report was also unacknowledged by officials."A magnitude 3.6 earthquake occurred near Bucharest" https://web.archive.org/web/20140328061937/http://www.realitatea.net/un-cutremur-de-3-6-grade-s-a-produs-in-apropiere-de-bucuresti_325727.html 2014-03-28 , Realitatea.net Causing 2 deaths, the earthquake also injured 558 people and about 55,000 homes damaged, leaving more than 12,500 people homeless in the Chișinău–Cahul area.Georgescu Emil-Sever Pomonis Antonios 2012 Building Damage vs. Territorial Casualty Patterns during the Vrancea (Romania) Earthquakes of 1940 and 1977 https://www.iitk.ac.in/nicee/wcee/article/WCEE2012_2123.pdf Proceedings of 15WCEE Intensity of VII (Very strong) was reported in Bucharest and in northern Bulgaria. In addition, intensities of V (Moderate) were recorded in Skopje (now the capital of North Macedonia), suggesting the earthquake was widespread. This is confirmed by reports of the earthquake as far north as Hungary and east Poland, and as far south as Greece and Italy. Lesser intensities of IV (Light) in Simferopol and Kiev in the Soviet Union and in Belgrade, Yugoslavia, and III (Weak) in Moscow and Titograd, Yugoslavia were recorded. See also List of earthquakes in 1986 1940 Vrancea earthquake 1977 Vrancea earthquake References Further reading Second earthquake in ten years strikes Romania https://www.eeri.org/lfe/pdf/Romania_Southeast_Article_Jan87.pdf R. Constantinescu H. Sandi 1987 Earthquake Engineering Research Institute 1986 Vrancea earthquake macroseismic intensity map https://mobee.infp.ro/despre-cutremurele-din-romania/cutremurul-din-31-august-1986 2021-08-31 2021-11-11 https://web.archive.org/web/20211111073523/https://mobee.infp.ro/despre-cutremurele-din-romania/cutremurul-din-31-august-1986 dead External links 489699 Category:1986 earthquakes Category:1986 in Romania Category:1986 in Bulgaria Category:1986 in Ukraine Category:1986 disasters in the Soviet Union Category:1986 in Yugoslavia Category:Earthquakes in Romania Category:Earthquakes in Bulgaria Category:Earthquakes in Moldova Category:Earthquakes in Ukraine Category:Earthquakes in the Soviet Union Category:Earthquakes in Yugoslavia Category:August 1986 in Europe Category:1980s in Bucharest Category:1986 disasters in Europe Category:1986 disasters in Bulgaria