Developing Probabilistic Seismic Hazard Maps (BAGO, PYAY, SAGAING, TAUNGOO, YANGON)

Description: 

"Myanmar is one of the earthquake prone countries since it is located in the Alpide Earthquake Belt. Myanmar has already experienced many destructive earthquakes and for examples are 1839 Innwa earthquake, 1930 Bago earthquake, 1956 Sagaing earthquake, 1912 Maymyo earthquake. All of these events are of the magnitude ≥ 7.0 (Mw). These earthquakes caused several hundreds casualties and damages of various kinds of buildings. The 1839 Innwa earthquake caused about 400 deaths as the total in and around Amarapura; and many buildings destroyed. The deadiliest earthquake happened in Myanmar is the 1930 Bago earthquake strucked on May 30 and the magnitude is 7.3 Mw. It caused 500 deaths in Bago and 50 in Yangon; and many buildings damaged. The 1930 Bago earthquakes seems to be one of the four major earthquakes sequence; August 8, 1929 (Swa) earthquake, May 5, 1930 (Bago) earthquake, December 3, 1930 (Phyu) earthquake in the southern segment of Sagaing Fault and January 27, 1931 (Putao) earthquake in the northern segment of that fault. All of these events were originated from the right-lateral strike-slip Sagaing Fault. It can be therefore regarded that the cities located along this fault are very high in the future occurrences of the large events. The major cities lied along that fault are Sagaing, Mandalay, Meiktila, Naypyitaw, Taungoo and Bago. As the first step, with the aid of the United Nations Human Settlements Programme (UN-HABITAT), Myanmar Geosciences Society (MGS), Myanmar Engineering Society (MES) and Myanmar Earthquake Committee (MEC) conducted the seismic risk assessment for three cities; Sagaing City (Sagaing Region); and Taungoo and Bago Cities (Bago Region). The project will include two portions as the seismic hazard assessment (SHA) and seismic risk assessment (SRA). MGS and MEC conducted SHA, while MES performed SRA. This report will represent the results of SHA for one of these three cities, Bago City, Bago Region. The main objective of the present project is to develop the seismic hazard and risk maps of the city. To develop the seismic hazard maps, the methodology of probabilistic seismic hazard assessment (PSHA) is applied and the resulted seismic hazards are presented in terms of peak ground acceleration (PGA), spectral acceleration (SA) and peak ground velocity (PGV) for 10% and 2% probability of exceedance in 50 years (475 years and 2,475 years recurrence intervals). The resulted seismic hazards are lead to use in the SRA and additionally these hazard maps are very useful for the urban land-use planning and the seismic resistance building construction purposes..."

Source/publisher: 

HABITAT (United Nations Centre for Human Settlements)

Date of Publication: 

2016-11-08

Date of entry: 

2019-07-15

Grouping: 

  • Individual Documents

Category: 

Geographic coverage: 

    • BAGO-PYAY-SAGAING-TAUNGOO-YANGON

Countries: 

Myanmar

Language: 

English

Local URL: 

Format: 

pdf pdf pdf pdf pdf

Size: 

3.68 MB 2 MB 3.34 MB 2.77 MB 2.5 MB

Resource Type: 

text

Text quality: 

    • Good

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