Historical Seismograms - Evidence from the AD 2000 Izu Islands ...

256 S. PrachuabTable 1. 12 Seismic Source Zones of Burma, Thailand and Indochina AreasZone Name of zone Number Maximum Maximumof events intensity magnitudeA Arakan Area 134 x-XI 5.75 PASB West-Central Burma Basin 22s XI 7.40 PASC East-Central Burma Basin 94 XI 7.50 PASD Bhama-Hao Shan Area 74 VIII 6.50 PASE Burma Eastern Highland 101 - 7.30 PASF Tenasserim Range 160' - 7.90 PASG Northern Thailand 50 VII 4.70 mb**H North Indochina 150 VIII 6.75 PASI South Yunn an-Kwangsi 49 XI 7.70 mbJ Andaman Arc 329 - 8.10 PASK Andaman Basin 224 - 6.50 PASL Andaman-Sumatra 107 - 6.30 UPP* including aftershocks; ** 1977-1983 only.Table 2. Major Historical Earthquakes from 642 BC to 1900Zone A: Arakan AreaDate Location Brief description1761 Arakan1762 Apr 02 All overBengal Bay1822 Apr 03 Bengal1833 Jun 26 Kyaupyu1843 Feb 06 Kyaukpyu1848 Oct 30 Sandoway1858 Aug 24 Thayetmyoand Prome1881 Feb 27 Bengal1881 Dec 31 BurmesecoastVery strong, the coast sections of land rose as much as 7 m.Most severe, water in tanks and river rose, openings inearth, fountain of sand and mud, coast of Arakan elevated.IMAX = X to XI.District shocks.Violent earthquake, flames issued to a height of severalhundred feet.Eruption of mud volcanoes.Violent shock.Most severe near location given, but severe also at Akyaband apparently False Island, situated SE of Cheduba Is.disappeared following the earthquake.Eruption of a volcano on Cheduba accompanied by flamesand trembling of the earth.Believed to have originated in the Bay og Bengal, affectedlarge portion of India, Bengal, and Andaman-Nicobar Is.Followed by mud volcano in Ramri Is. and broad, massiveflames of fire from Cheduba volcano.1882 Dec 31 Arakan Earthquake shock followed by volcanic eruptions onCheduba Is.Zone B: West-Central Burma BasinDate Location Brief description422 BC Mt. Popa1858 Thayetmyoand PromeA great earthquake roared through central BurmaFelt as far as Moulmein in the south, houses collapsed,pagodas toppled. Course of river reversed,I = X to XI (M.M. scale).(continued )