Since 1067, an earthquake with M≥4.75 was recorded in Guangdong, and another earthquake with M≥4.75 occurred in Guangdong Province and its sea area.
54 earthquakes, including 8 earthquakes with M ≥ 4.75-4.9/KLOC-0, 26 earthquakes with M≥5.0-5.9 and 8 earthquakes with M ≥ 6.0-6.9 (excluding this).
There are 6 earthquakes in the sea area outside the map area) and 2 earthquakes with M≥7 (excluding earthquakes in the sea area outside the map area 1 time). Two earthquakes of magnitude 7 occurred in the south.
Australia (1600, 19 18). 19 18 south Australia earthquake with magnitude 7.3 is the largest earthquake in Guangdong. An earthquake of magnitude 6 occurred in the south.
Australia, Jieyang, Haifeng, Heyuan, Yangjiang and other regions. 1March 962 19 Xinfeng reservoir M = 6. 1 Heyuan earthquake ranks fourth in the world.
One of the earthquakes induced by reservoirs of magnitude 6 or above.
South Australia earthquake
19 18 February 13 June 14: 07 and 13 seconds are in the sea area about 10 km northeast of Nanao Island in eastern Guangdong, namely Liuniu Reef and Xingjiao Reef.
An earthquake of magnitude 7.5 occurred between 23.5 degrees north latitude and 1 17.2 east longitude. The epicenter intensity of this earthquake is X degrees, and the epicenter
The depth is 23 kilometers, and the earthquake zone is South Australia, Shantou and Zhao 'an. Most houses in South Australia earthquake area collapsed to the ground. Deep concave stone
The arch was destroyed, the top of the arch collapsed, the top of Long Menta collapsed, and the tower tilted to the west. Eight out of ten people were killed or injured. Shantou
More than 100 houses collapsed in the earthquake zone, causing about 1000 casualties. More than 3,000 houses collapsed in Zhao 'an earthquake zone, causing many deaths and injuries. Extreme earthquake
Cracking, water inrush and sand blasting are common in this area. A single ground fissure is generally 5-20cm wide and 2-5m long; The largest is 60- 100 cm wide.
It is tens of meters long.
The earthquake affected South Australia, Dongshan, Xiao Yun, Raoping, Shantou, Chenghai, Chaoyang and Jieyang in Fujian and Guangdong provinces.
Different degrees of damage. There are also damage records in Suzhou, Jiangsu Province, Ganzhou, Jiangxi Province and Guangzhou, which are far from the epicenter. feel
The scope includes Shanghai, Zhejiang, Taiwan Province, Jiangsu, Anhui, Hunan, Jiangxi, Hubei, Guangxi and other provinces (autonomous regions).
The main long axis of the seismic belt runs to the northeast, but the central part obviously protrudes to the northwest, so there is also a long axis running to the northwest.
Crossroads.
Heyuan earthquake
1 962 March 19 4: 00 18: 53 It is only about1km downstream of Xinfengjiang Reservoir Dam in Heyuan (23 43 ˊ north latitude, east
1 14 40 ˊ An earthquake of magnitude 6. 1 occurred. The epicentre intensity of this earthquake is Ⅷ degrees, and the focal depth is about 5 kilometers.
The area caused casualties and houses collapsed, which is 5000 meters away from Shuangxia Village in Santaishan and Xinfeng River between Yaposhan.
There are more than 90 houses destroyed along the coast, and more than 500 houses are severely cracked/kloc-0, accounting for 60-70% of the total, and the rest houses are damaged.
Lost, none of them are in good condition. There are also cracks in steel plate concrete buildings and new houses.
The newly-built buildings and bungalows in Heyuan Town were all damaged, and some walls burst and some collapsed, accounting for more than 0/200 collapsed houses.
2400 rooms were seriously damaged, and more than 7000 rooms were damaged, accounting for 70% of the total. There are also ground fissures, water spraying and sand splashing, small landslides,
Natural destruction phenomena such as boulder rolling down. Guangzhou, which is about 200 kilometers away from the epicenter, and Longchuan, which is 100 kilometers away, also suffered different degrees of damage.
Not good. The longest distance is 570 kilometers, including Dongshan, Xiao Yun, Wuping and Shangkeng in Fujian, Dayu and Xinfeng in Jiangxi.
Anyuan and other places. The long axis of the isoseismic line is northeast.
Yangjiang earthquake
1969 At 6: 49: 43 on July 26th, an earthquake of magnitude 6.4 occurred in the southwest ocean of Yangjiang County, with the macro epicenter as follows.
North latitude 2145 ˊ, east longitude11145 ˊ, focal depth 5 km, strong epicenter intensity.
The damaged areas of this earthquake are mainly concentrated in Yangjiang, where four towns, Xitou, Zhimao, Chengcun and Pinggang, were affected.
Several village teams are about 19 km long from east to west and about 10 km wide from north to south. County 10762, which is quite serious.
35,965 buildings were damaged, 90,840 buildings were generally damaged, 58 buildings were seriously damaged, 26 buildings were cracked, and 2 buildings collapsed along the ocean.
There are a large number of ground fissures, sand blasting and bubbling in the north reach of Beijin Port. Rock caving occurs in Longgong Mountain and Bengkeng Mountain, with the largest number.
The big one collapsed by 225 meters. Ground fissures are mainly divided into two groups: NE and NW. Because the focal point is shallow and the damage range is small, except
Outside Yangjiang County, the neighboring areas were only slightly damaged or felt the earthquake. These areas include Xinyi, Fengkai, Huaiji, Xinxing and Germany in Guangdong.
Qing, Zhaoqing, Yunan, Guangzhou and other cities and counties.