As a result, bank erosion is a serious cause of poverty in bangladesh. Seismological report for the assamtibet earthquake on august 15, 1950, bull. Guwahati, april 30 the earthquake on august 15, 1950, had caused extensive damage to the upper assam areas and arunachal pradesh, besides the tibet region of china. Simulation of strong ground motion during the 1950 great assam earthquake s. It is also the biggest earthquake on record that was not caused by an oceanic subduction. Stay connected to your students with prezi video, now in microsoft teams. Assam earthquake india june 12, 1897 devastating disasters.
Field evidences of liquefaction and search for paleoseismic events. The 1950 assam tibet earthquake, also known as the assam earthquake, occurred on 15 august and had a moment magnitude of 8. The great assam earthquake of august 15, 1950 nature. However, some recent studies have suggested for earthquake of magnitude m w 9 or more in the himalayan region. The immigrants expulsion from assam act, 1950 page 1 the immigrants expulsion from assam act, 1950 bare acts in india statutes and laws free download bare acts and case laws in india have been extensively discussed here, the laws pass by the parliament and its implementation in the courts are commonly discussed here in length. During the period 1897 to 1950, the country was hit by four such earthquakes. Or, try our realtime notifications, feeds, and web services. Morphological response of the brahmaputrapadmalower. Jul 14, 2017 map showing the historical earthquakes in the eastern himalaya 1255, 17, 1897, 1950 yellow polygon. Morphological response of the brahmaputrapadmalower meghna. A composite rupture model for the great 1950 assam. The assam earthquake of june 12, 1897 was a violent 8. The impact of the great 1950 assam earthquake on the. A background paper on recreating 1950 earthquake scenario in 2011 was presented at the national conference on earthquake risk mitigation strategy in guwahati on february 2425.
The state has experienced two major earthquakes in the year 1897 and 1950. This dam prevented any of the water from getting on land. Among the most severe are those recorded in 1897, with the shillong plateau as the epicentre. Assam earthquake india august 15, 1950 devastating.
For instance, development of the first seismic zone map and of the earthquake resistant features for masonry buildings took place in 1930s, and formal. Upper assam earthquake of 1950 on august 15, 1950 at 7. There were sandblows, ground cracks and large landslides in the area. This study corroborates the first instance in using postbomb radiogenic isotopes to help identify an earthquake rupture. Pdf investigations on the aftershock sequence of the. Choose the incorrect one about the 1950 earthquake. Pdf a composite rupture model for the great 1950 assam. Request pdf the impact of the great 1950 assam earthquake on the frontal regions of the northeast himalaya the himalaya, worlds highest mountain range, harbours some of the worlds. The most deadly earthquake was recorded in china in 1557. The assam earthquake of august 15, 1950, magnitude 8.
The 1950 assamtibet earthquake, also known as the assam earthquake, occurred on 15 august and had a moment magnitude of 8. Simulation of strong ground motion during the 1950 great. Earthquake epicenter, mishmi thrust and isoseismal lines after poddar, 1952 can also be seen. The shillong plateau has been implicated with a popuptectonics associating the 1897 great earthquake of mw 8. This suggests that the population is diminishing, and derelict rice terraces at various places between walong and rima point to the same conclusion. Experts map effects of 1950 quake study shows massive loss. The 1950 assam tibet earthquake also known as the assam earthquake occurred at 2. Primary surface rupture of the 1950 tibetassam great earthquake. Satellite map of 1950 assam tibet earthquake the 1950 assam tibet earthquake, also known as the assam earthquake or medog earthquake, occurred on august 15, and had a magnitude of 8. Publication issue 1 of publication national geophysical research institute india issue 1 of publication, central board of geophysics. The assam earthquake on august 15, 1897, more than 1538 people died. Surface traces of the great, 1581950, assam earthquake rupture on main himalayan frontal.
Nature, nation, and the ambiguities of catastrophe, modern asian studies, 40. Pdf although the m, 1950 assam earthquake endures as the. Though this earthquake is known as the assam earthquake, its epicenter was located in the territory adjacent to the mishmi hills of arunachal pradesh of india, in higher reaches of the lohit river near rima, tibet. The epicentre was located rima and the earthquake itself was destructive in both assam and tibet. At least 780 people lost their lives and property was destroyed in the nyingchiqamdozhamo area of eastern tibet. This article contains a translation of 1950 assam tibet earthquake from en. Instead, it was caused by two continental plates converging crashing together. Relief, rehabilitation, and nationbuilding in north eastern india after the 1950 assam earthquake. According to the us geological survey usgs, that quake was more damaging in assam than that of the 1897, in terms of property loss. Morphological response of the brahmaputrapadmalower meghna river system to the assam earthquake of 1950 by maminul haque sarker download pdf 31 mb. Request pdf the impact of the great 1950 assam earthquake on the frontal regions of the northeast himalaya the himalaya, worlds highest mountain. One major earthquake that occurred and destroyed a lot of property was the earthquake in assam tibet that occurred on 15august 1950.
Several large earthquakes occurred along the indoburma ranges. In this paper, ground motion during the independence day earthquake of august 15, 1950 mw 8. Plate tectonics the earthquake was created by the indian continental plate grinding into the eurasian plate naturally induced tsunami after the earthquake, many landslides occurred, creating a large dam. The collision zone between india and eurasia along the tremendous himalayan mountain. Its epicentre was about twenty miles northwest of rima, in the. Maximum intensity was reported in the mishimi and abor hills of the sadiya. Kingdonward on the assam earthquake when he was camping close to the epicenter. Eastern india after the 1950 assam earthquake reordering. The great 1950 assam earthquake caused widespread devastation throughout the frontal regions of northeast himalaya. The plate of india and eurasia plate collided to create the highest plateau. The earthquake event page application supports most recent browsers, view supported browsers. Raghukanth abstractin this paper, ground motion during the independence day earthquake of august 15, 1950 m. Assam earthquake 15th august 1950 peddling and scaling.
The epicentre was located in the mishmi hills, known in chinese as the qilinggong mountains. Kingdonward on the evening of 15 august 1950 one of the biggest earthquakes ever recorded took place in southeastern tibet, close to the assam frontier geogr. Investigations on the aftershock sequence of the great assam earthquake of august 15, 1950 article pdf available in annals of geophysics annali di geofisica 2712 january 2010 with 29 reads. Assamtibet earthquake of 1950 by vivek rallabandi on prezi.
Assam tibet earthquake by sophia battaglia on prezi. The asssamtibet earthquake, also called the assam earthquake, happened on 15 august 1950. Todays earthquakes in arunachal pradesh assam, india. In this paper, we jointly analyze the spatial distributions of reappraised aftershocks and landslides, and provide new field evidence for its hitherto unknown surface rupture extent along the mishmi and abor hills. It was the 6th biggest earthquake of the 20th century. A compilation of papers on the assam earthquake of august 15. The assam earthquake of 1897 occurred on 12 june in assam at 17. The 1950 earthquake is considered one of the most disastrous in south asias history. Out of the earth, which was open for 5 days, came columns of steam and sup. This was known to be the 10th largest earthquake in the 20th century. The immigrants expulsion from assam act, 1950 page 1.
Also called as tibet earthquake or medog earthquake, it was followed by thousands of aftershocks, most of which were of magnitude 6. In this paper, we present a detailed analysis of seismological data extending back to 1200 ad, and show that earthquake in himalayan region may not be expected to be. This led the state of assam fall under the seismic zone v making the entire state prone to earthquake of moderate to very high intensity. Directian offaulting in the great assam earthquake of 15. Simulation of strong ground motion during the 1950 great assam earthquake article pdf available in pure and applied geophysics 1659. Aug 15, 2017 some researchers say that the assam quake of 1950 was a thrust quake while others argue that it was a strikeslip event similar to the quakes we get along most faults in california. No matter what the mechanism, there is one item all seismologists agree upon. Landslides aftershocka quake that occurs after a major earthquake. Two thousand homes, temples and mosques were destroyed there and over 1,500 people killed. A hybrid simulation technique which combines the low frequency ground motion simulated from an analytical source mechanism model with the stochastically simulated highfrequency components is used. Severe bank retreat associated with net widening of the jamuna, padma and lower meghna rivers during the last 50 years has greatly. Destruction was massive all over northeast india and 6,000 people lost their lives. A major earthquake may be expected in this gap in the near future, and hence the ne india and adjacent areas are highly vulnerable to earthquake hazards.
Significance of such earthquakes can be gauged from the fact that in his famous book on engineering seismology richter, 1958 professor c. Morphological response of the brahmaputrapadmalower meghna river system to the assam earthquake of 1950. The study area showing the meizoseismal area of the great 1950 assam earthquake. The source of the great assam earthquake an interplate.
The channels of the great rivers of bangladesh are highly dynamic and their banklines change continuously, consuming large areas of floodplain and making thousands of people landless. India has also witnessed many great earthquakes of magnitude larger than 8. A composite rupture model for the great 1950 assam earthquake. The earthquake was felt throughout most of northeastern india and some parts of eastern india. Gps coordinates of 1950 assamtibet earthquake, china. The source of the great assam earthquake an interplate wedge. Although the m, 1950 assam earthquake endures as the largest continental earthquake ever recorded, its exact source and mechanism remain contentious.
Considering the size of the earthquake, the mortality rate was about 1,542 casualties, but property damage was very heavy. Primary surface rupture of the 1950 tibetassam great. Earthquake engineering developments started rather early in india. Many freestanding monoliths on the khasi and jaintia. The london times and the new york times published several reports on this earthquake. Assam earthquake the largest recorded quake youtube. The shillong plateau was the source area for the 1897 great earthquake m 8. Eastern india after the 1950 assam earthquake reordering a. In this context, the research reported in this thesis proposes a working hypothesis that morphological changes in the jamunapadmalower meghna system have occurred in response to disturbance of the fluvial system by the assam earthquake of 1950. Not only was the assam earthquake of 1897 one of the earliest recorded in the region, it was also one of the most devastating.
Reevaluated intensities for the great assam earthquake. The southern end of the kopili fault is believed to have generated the 1869 cachar earthquake of mw 7. The eurasian and indian plate were converging which means crashing against each other and with the stress building up, and getting released the earthquake was born. Northeast india is prone to major earthquake events due to its geographical and tectonic settings. Seiches amplitudes in norway, initial p motions throughout the world, aftershocks and landslides distribution, ppp ratio at tokyo, rl ratio and directivity at pasadena, are also used. Directian offaulting in the great assam earthquake of 15 august 1950. Mar 25, 2010 being in search of more documents today 27.1624 1589 1274 797 438 625 783 258 196 965 1125 1542 1023 596 347 1522 21 1015 999 1224 7 1076 336 683 964 947 1047 1297 734 1063 643 526 1469 1208 1190 95 932 1284 1109 995 682 217 491 1150 1184 227