1936 Lingshan earthquake

Last updated
1936 Lingshan earthquake
China edcp relief location map.jpg
Bullseye1.png
UTC  time1936-04-01 02:31
ISC  eventn/a
USGS-ANSS n/a
Local dateApril 1, 1936 (1936-04-01)
Local time09:31
Magnitude Ms 6.75
Depth7 km (4.3 mi)
Epicenter 22°30′N109°24′E / 22.5°N 109.4°E / 22.5; 109.4
FaultLingshan Fault Zone
Areas affected Guangxi, China
Max. intensity CSIS IX
Casualties92 dead, 200 injured

The 1936 Lingshan earthquake struck southern China's Guangxi (formerly part of Guangdong) on 1 April at 09:31 local time. It was the largest continental earthquake in southern China since historical records began. The earthquake had an estimated surface-wave magnitude of 6.75 and was associated with activity on the Fangcheng–Lingshan Fault Zone. At least 92 people were reported dead and over 5,800 homes were destroyed. Due to another earthquake occurring in Indonesia about five minutes prior, seismic records of this event are sparse.

Contents

Earthquake

Two subparallel zones of northeast-trending surface ruptures were recorded totaling 12.5 km (7.8 mi). The longest of the two runs for 9.4 km (5.8 mi) and is characterised by 0.54–2.9 m (1 ft 9 in – 9 ft 6 in) of dextral slip and vertical offsets of 0.23–1.02 m (9.1 in – 3 ft 4.2 in). The eastern rupture zone measures 3.1 km (1.9 mi) while its dextral and vertical offsets were 0.36–1.3 m (1 ft 2 in – 4 ft 3 in) and 0.15–0.57 m (5.9 in – 1 ft 10.4 in), respectively. These surface ruptures appear as the fault expression, ground cracks, scarps, colluvial wedges, landslides and liquefaction. [1]

The event was not included in the International Seismological Centre's catalog. About five minutes prior to the Lingshan earthquake, a Mw 7.7 earthquake struck the Talaud Islands. Signals from the larger earthquake compromised that of the Lingshan earthquake which led to a lack of reliable seismic data. There was also no local seismic observatories in China during this period. The earthquake's magnitude and epicenter were determined using an isoseismal map which assigned a maximum intensity of IX. [2]

Impact

The earthquake killed at least 92 people, injured 200 and demolished 5,800 homes in Lingshan and Hepu counties. Shaking was felt across 500,000 km2 (190,000 sq mi) and in parts of Hong Kong and Haiphong in Vietnam. [2] In Lingshan, there was at least 58 deaths and 187 injured; over 5,100 homes and schools collapsed. A further 34 died in Hepu and 679 homes were destroyed. Villages along the northwestern base of Mount Luoyangshan suffered immense damage; some villages including Liue and Gaotang were completely or half-destroyed. [3]

See also

Related Research Articles

<span class="mw-page-title-main">2002 Denali earthquake</span> 7.9 magnitude; November 3, 2002

The 2002 Denali earthquake occurred at 22:12:41 UTC November 3 with an epicenter 66 km ESE of Denali National Park, Alaska, United States. This 7.9 Mw earthquake was the largest recorded in the United States in 37 years. The shock was the strongest ever recorded in the interior of Alaska. Due to the remote location, there were no fatalities and only one injury.

<span class="mw-page-title-main">1927 Gulang earthquake</span> 1927 severe earthquake centered near Gulang, Gansu Province, China

The 1927 Gulang earthquake occurred at 06:32 a.m. on 23 May. This 7.6 magnitude event had an epicenter near Gulang, Gansu in the Republic of China. There were 40,912 deaths. It was felt up to 700 km (435 mi) away.

The 1912 Mürefte earthquake occurred at 03:29 local time on 9 August. It had an estimated magnitude of 7.4 Mw and a maximum intensity of X (Extreme) on the Modified Mercalli intensity scale, causing from 216 to 3,000 casualties.

<span class="mw-page-title-main">1932 Ierissos earthquake</span> Severe earthquake on Chalkidiki peninsula, Greece

The 1932 Ierissos earthquake occurred at 19:20 on 26 September. It caused severe damage in Ierissos, Greece and the surrounding part of the Chalkidiki peninsula, with 161–491 casualties reported.

The 1892 Laguna Salada earthquake occurred at 23:20 Pacific Standard Time on February 23. It had an estimated moment magnitude of 7.1–7.2 and a maximum perceived intensity of VIII (Severe). The shock was centered near the Mexico–United States border and takes its name from a large dry lake bed in Baja California, Mexico. There were no reported casualties, but the event affected the then largely-uninhabited areas of northern Mexico and Southern California.

The 1892 Vacaville–Winters earthquakes occurred in northern California as a large doublet on April 19 and April 21. Measured on a seismic scale that is based on an isoseismal map or the event's felt area, the 6.4 Mla and 6.2 Mla  events were assigned a maximum Mercalli intensity of IX (Violent), and affected the North Bay and Central Valley areas. The total damage was estimated to be between $225,000 and 250,000 and one person was killed. No evidence of fault movement on the surface of the ground was observed as a result of either of the strong shocks. Both occurred in the domain of the San Andreas strike-slip system of faults, but their focal mechanism is uncertain.

An earthquake affected Myanmar on 5 May 1930 with a moment magnitude (Mw ) 7.4. The shock occurred 35 km (22 mi) beneath the surface with a maximum Rossi–Forel intensity of IX. The earthquake was the result of rupture along a 131 km (81 mi) segment of the Sagaing Fault—a major strike-slip fault that runs through the country. Extensive damage was reported in the southern part of the country, particularly in Bago and Yangon, where buildings collapsed and fires erupted. At least 550, and possibly up to 7,000 people were killed. A moderate tsunami struck the Burmese coast which caused minor damage to ships and a port. It was felt for over 570,000 km2 (220,000 sq mi) and as far as Shan State and Thailand. The mainshock was followed by many aftershocks; several were damaging. The December earthquake was similarly sized which also occurred along the Sagaing Fault.

On 6 November 1988, two earthquakes struck Lancang and Gengma counties, Yunnan, near the China–Myanmar border. These earthquakes measured moment magnitude (Mw ) 7.0 and 6.9, respectively, spaced 12 minutes apart. These earthquakes were assigned a maximum China seismic intensity of IX and X, respectively. Between 748 and 939 people were killed; more than 7,700 were injured. Both earthquakes caused damage and economic losses estimated at CN¥ 2.05 billion. Moderately large aftershocks continued to rock the region, causing additional casualties and damage.

In 1954, the state of Nevada was struck by a series of earthquakes that began with three magnitude 6.0+ events in July and August that preceded the Mw  7.1–7.3 mainshock and M 6.9 aftershock, both on December 12. All five earthquakes are among the largest in the state, and the largest since the Cedar Mountain earthquake of 1932 and Pleasant Valley event in 1915. The earthquake was felt throughout much of the western United States.

The 1973 Luhuo earthquake struck near the town of Zhaggo in Garzê Tibetan Autonomous Prefecture of Sichuan Province, China on February 6, 1973, with a magnitude of 7.6 Ms. The earthquake had a maximum intensity of X (Extreme) on the Modified Mercalli intensity scale. It resulted in between 2,175 and 2,204 deaths and a further 2,743 injuries. Serious and widespread destruction occurred in Luhuo County.

A major earthquake occurred during the rule of the Qing dynasty in Shandong Province on July 25, 1668. It had an estimated magnitude of Ms 8.5, making it the largest historical earthquake in East China, and one of the largest to occur on land. An estimated 43,000 to 50,000 people were killed, and its effects were widely felt. Its epicenter may have been located between Ju and Tancheng counties, northeast of the prefecture-level city of Linyi in southern Shandong.

The 1739 Yinchuan–Pingluo earthquake rocked the northern Ningxia Hui Autonomous Region on January 3 with an epicenter in the prefecture-level city Shizuishan. The estimated magnitude 7.1–7.6 earthquake had a maximum intensity of XI on the Mercalli intensity scale, and killed about 50,000 residents and officials. It was widely felt; perceived in Shanxi, Shaanxi and Hebei provinces. Aftershocks persisted for more than two years with the largest being a 5.5 on February 13 that same year.

The 1902 Turkestan earthquake devastated Xinjiang, China, near the Kyrgyzstan border. It occurred on August 22, 1902, at 03:00:22 with an epicenter in the Tien Shan mountains. The thrust earthquake measured 7.7 on the moment magnitude scale (Mw ) and had a depth of 18 km (11 mi).

The 1995 Menglian earthquake or 1995 Myanmar–China earthquake occurred on 12 July at 05:46:43 local time in the Myanmar–China border region. The earthquake had an epicenter on the Myanmar side of the border, located in the mountainous region of Shan State. It registered 7.3 on the Chinese surface-wave magnitude scale (Ms ) and 6.8 on the moment magnitude scale (Mw ). With a maximum Mercalli intensity assigned at VIII, it killed 11 people and left another 136 injured. Over 100,000 homes in both countries were destroyed and 42,000 seriously damaged. Some damage to structures were also reported in Chiang Mai and Chiang Rai, Thailand. The low death toll from this earthquake was attributed to an early warning issued prior to it happening. Precursor events including foreshocks and some seismic anomalies led to an evacuation of the area before the mainshock struck. It is thought to be one of the few successfully predicted earthquakes in history.

The 1850 Xichang earthquake rocked Sichuan Province of Qing China on September 12. The earthquake which caused major damage in Xichang county had an estimated moment magnitude of 7.3–7.9 Mw  and a surface wave magnitude of 7.5–7.7 Ms . An estimated 20,650 people died.

The 1979 Saint Elias earthquake affected Alaska at 12:27 AKST on 28 February. The thrust-faulting Mw 7.5 earthquake had an epicenter in the Granite Mountains. Though the maximum recorded Modified Mercalli intensity was VII, damage was minimal and there were no casualties due to the remoteness of the faulting. Damage also extended across the border in parts of Yukon, Canada.

The 1980 Livermore earthquake occurred on January 24 at 11:00 PST in California. The epicenter of the 5.8 Mw earthquake was a hilly area 12 km (7.5 mi) southeast of Mount Diablo and north of Livermore Valley. The earthquake had a maximum Modified Mercalli intensity of VII. Forty four people were injured and damage across the San Francisco Bay Area totaled $11.5 million, with the majority inflicted at the Lawrence Livermore National Laboratory.

The 1913 Eshan earthquake struck China's Yunnan Province on 21 December with a moment magnitude of 6.8 and maximum Mercalli intensity of IX (Violent). The shock devastated Eshan County; at least 942 people died and thousands of homes were destroyed. The earthquake ruptured along a section of the strike-slip Qujiang Fault.

The 1038 Dingxiang earthquake devastated present-day Shanxi Province, northern China on 9 January. At least 32,300 people died across the province when the Ms  7.25 earthquake struck Dingxiang and Xinxian counties. In Xinzhou, about 19,742 people died and 5,655 were injured. More than 50,000 livestock also perished. About 759 were killed in Guoxian County and in present-day Taiyuan, 1,890 people died.

The 1947 Dustabad earthquake, also known as the Charmeh earthquake, occurred in South Khorasan province of northeastern Iran on 23 September. The mainshock had a magnitude of Mw 6.9 and maximum Modified Mercalli intensity of VIII (Severe). It was accompanied by a Mw  6.1 aftershock on 26 September. These earthquakes killed an estimated 500 people.

References

  1. Xi-guang, Li; Li-li, Pan; Bing-su, Li; Guan-jun, Nie; Jiao-bing, Wu; Jun-hong, Lu; Xiao-min, Yan (2017). 广西灵山1936年6¾级地震地表破裂类型与位错特征[Type and displacement characteristics of Lingshan m6¾ earthquake surface rupture zone in 1936, Guangxi]. Seismology and Geology (in Chinese). 39 (5): 904–916. doi:10.3969/j.issn.0253-4967.2017.05.003.
  2. 1 2 Peilan, Guo; Baokun, Li; Bin, Zhou; Xiangdong, Feng; Yongge, Wan; Liye, Zou; Guangbao, Du (2017). "Determination of the source parameters of the northeast Lingshan, Guangxi, M6 ¾ earthquake on April 1, 1936". Acta Seismologica Sinica. 39 (6): 870–879. doi:10.11939/jass.2017.06.005 (inactive 28 December 2024).{{cite journal}}: CS1 maint: DOI inactive as of December 2024 (link)
  3. National Geophysical Data Center (1972). "Significant Earthquake Information". National Geophysical Data Center / World Data Service (NGDC/WDS): NCEI/WDS Global Significant Earthquake Database. NOAA National Centers for Environmental Information. doi:10.7289/V5TD9V7K . Retrieved 30 July 2024.