1935 Sumatra earthquake

Earthquake in Indonesia 1935 Sumatra earthquake 1935-12-28 02:35:31 904721 iscgem904721 1935 12 28 09:35 Indonesia Sumatra 7.7 w y 0.0 98.25 inline,titlehttp://www.ngdc.noaa.gov/nndc/struts/results?eq_0=3567&t=101650&s=13&d=22,26,13,12&nd=display https://archive.today/20121214011955/http://www.ngdc.noaa.gov/nndc/struts/results?eq_0=3567&t=101650&s=13&d=22,26,13,12&nd=display dead December 14, 2012 Comments for the Significant Earthquake NGDC 26 November 2010 Sumatra, Dutch East Indies 7 Sunda megathrust Minor The 1935 Sumatra earthquake occurred at 09:35 local time 02:35 UTC on 28 December. It had a magnitude of w y 7.7 and a maximum felt intensity of VII (Damaging) on the European macroseismic scale. It also triggered a minor tsunami. Tectonic setting The island of Sumatra lies on the convergent plate boundary between the Indo-Australian plate and the Eurasian plate. The convergence between these plates is highly oblique near Sumatra, with the displacement being accommodated by near pure dip-slip faulting along the subduction zone, known as the Sunda megathrust, and near pure strike-slip faulting along the Great Sumatran fault. The major slip events on the subduction zone interface are typically of megathrust type. Historically, great or giant megathrust earthquakes have been recorded in 1797, 1833, 1861, 2004, 2005 and 2007, most of them being associated with devastating tsunamis. Smaller (but still large) megathrust events have also occurred in the small gaps between the areas that slip during the larger events in 1935, 1984, 2000 and 2002.Natawidjaja D. H. Danny Hilman Natawidjaja Sieh K. Kerry Sieh Chlieh M. Galetzka J. Suwargadi B.W. Cheng H. Edwards R.L. Avouac J.-P. Ward S. N. amp 2006 Journal of Geophysical Research Source parameters of the great Sumatran megathrust earthquakes of 1797 and 1833 inferred from coral microatolls 111 B06403 n/a https://authors.library.caltech.edu/20847/ 10.1029/2005JB004025 2009-10-24 2006JGRB..111.6403N 10220/8480 free Damage The Batu Islands and the neighbouring coast of Sumatra were the most affected areas. The lighthouse on Bodjo island was damaged and cracks appeared in the hill that it stands on. Several houses were destroyed at Pulu Tello. The islands of Tanahbala and Sigata showed evidence of uplift, with low-lying areas no longer flooded at high tide. Near Padang power and telephone lines swayed, with some lines being cut. Some huts collapsed at Sibolga, although there were no reported casualties. Characteristics The earthquake is thought to have occurred on the plate interface at a depth of about 28 km. The estimated source parameters for the earthquake are 65 km length, 30 km width with a maximum displacement of 3 m.Rivera L. Sieh K. Helmberger D. Natawidjaja D. amp A Comparative Study of the Sumatran Subduction-Zone Earthquakes of 1935 and 1984 Bulletin of the Seismological Society of America 92 5 2002 1721–1736 http://www.tectonics.caltech.edu/sumatra/downloads/papers/P02a.pdf 25 November 2010 10.1785/0120010106 2002BuSSA..92.1721R Such a rupture zone has a predicted pattern of uplift and subsidence and this has been found to be consistent with paleogeodetic records taken from coral microatolls around the Batu Islands.Natawidjaja D.H. Sieh K. Ward S.N. Cheng H. Lawrence Edwards R. Galetska J. Suwargadi B.W. amp 2004 Paleogeodetic records of seismic and aseismic subduction from central Sumatran microatolls, Indonesia Journal of Geophysical Research 109 B04306 10.1029/2003JB002398 http://tecto.caltech.edu/sumatra/downloads/papers/P04a.pdf 26 November 2010 2004JGRB..109.4306N 10356/95667 See also List of earthquakes in 1935 List of earthquakes in Indonesia References Martin S. S. Cummins P. R. Meltzner A. J. Gempa Nusantara: A Database of 7380 Macroseismic Observations for 1200 Historical Earthquakes in Indonesia from 1546 to 1950 Bulletin of the Seismological Society of America 112 6 2022 0037-1106 10.1785/0120220047 2958–2980 2022BuSSA.112.2958M 253365854 10356/166257 free External links 904721 Category:Earthquakes in Sumatra Sumatra Earthquake, 1935 Category:Earthquakes in Indonesia Sumatra Earthquake Sumatra Earthquake Category:20th century in Sumatra Category:1935 disasters in Asia Category:1935 disasters in Oceania Category:20th-century disasters in Indonesia