|UTC time||1956-10-24 14:42:18|
|Local date||24 October 1956|
|Local time||1956-10-24 08:42:18|
The 1956 Nicaragua earthquake occurred on October 24 at 14:42 UTC. Ms 7.3, or Mw 7.2. Building damage was reported in Managua. A study of W. Montero P. shows that this earthquake might be related to the earthquake of Nicoya Peninsula on October 5, 1950. A tsunami was triggered by the earthquake.The epicenter was located west of Masachapa, Managua Department, Nicaragua. It was an earthquake of magnitude
Managua is a department in Nicaragua. It covers an area of 3,672 km² and has a population of 1,380,300, making it the country's most populated department. The capital is the city of Managua, which is also the capital of Nicaragua. The department has two coastlines, on the Pacific Ocean and on Lake Managua, but does not border Lake Nicaragua.
Nicaragua, officially the Republic of Nicaragua, is the largest country in the Central American isthmus, bordered by Honduras to the northwest, the Caribbean to the east, Costa Rica to the south, and the Pacific Ocean to the southwest. Managua is the country's capital and largest city and is also the third-largest city in Central America, behind Tegucigalpa and Guatemala City. The multi-ethnic population of six million includes people of indigenous, European, African, and Asian heritage. The main language is Spanish. Indigenous tribes on the Mosquito Coast speak their own languages and English.
The 1945 Balochistan earthquake occurred in the Makran princely state of the British Raj at 1:26 PST on 28 November 1945 with a moment magnitude of 8.1 and a maximum perceived intensity of X (Extreme) on the Mercalli intensity scale.
Seismic magnitude scales are used to describe the overall strength or "size" of an earthquake. These are distinguished from seismic intensity scales that categorize the intensity or severity of ground shaking (quaking) caused by an earthquake at a given location. Magnitudes are usually determined from measurements of an earthquake's seismic waves as recorded on a seismogram. Magnitude scales vary on what aspect of the seismic waves are measured and how they are measured. Different magnitude scales are necessary because of differences in earthquakes, the information available, and the purposes for which the magnitudes are used.
The following events occurred in October 1956:
The 1931 Nicaragua earthquake devastated Nicaragua's capital city Managua on 31 March. It had a moment magnitude of 6.1 and a maximum MSK intensity of VI (Strong). Between 1,000 and 2,450 people were killed. A major fire started and destroyed thousands of structures, burning into the next day. At least 45,000 were left homeless and losses of $35 million were recorded.
The 1972 Nicaragua earthquake occurred at 12:29:44 a.m. local time on December 23 near Managua, the capital of Nicaragua. It had a moment magnitude of 6.3 and a maximum MSK intensity of IX (Destructive). The epicenter was 28 kilometers northeast of the city centre and a depth of about 10 kilometers. The earthquake caused widespread casualties among Managua's residents: 4,000–11,000 were killed, 20,000 were injured and over 300,000 were left homeless.
The 1992 Nicaragua earthquake occurred off the coast of Nicaragua at 6:16 p.m. on September 2. Some damage was also reported in Costa Rica. At least 116 people were killed and several more were injured. The quake was located in an active zone of stress and deformation. It created tsunamis disproportionately large for its surface wave magnitude.
The 1905 Kangra earthquake occurred in the Kangra Valley and the Kangra region of the Punjab Province in India on 4 April 1905. The earthquake measured 7.8 on the surface wave magnitude scale and killed more than 20,000 people. Apart from this, most buildings in the towns of Kangra, Mcleodganj and Dharamshala were destroyed.
A tsunami earthquake triggers a tsunami of a magnitude that is very much larger than the magnitude of the earthquake as measured by shorter-period seismic waves. The term was introduced by Hiroo Kanamori in 1972. Such events are a result of relatively slow rupture velocities. They are particularly dangerous as a large tsunami may arrive at a coastline with little or no warning. A tsunami is a sea wave of local or distant origin that results from large-scale seafloor displacements associated with large earthquakes, major submarine slides, or exploding volcanic islands.
The 1936 Miyagi earthquake occurred on November 3 at 05:45 local time with a magnitude Ms 7.2, or MJMA 7.4. The epicenter was located off the Miyagi Prefecture, Japan. Four people were injured. Building damage was reported. In Isobe (磯部) village, nowadays part of Sōma, Fukushima, a small market building collapsed. A tsunami was recorded.
The 1971 Solomon Islands earthquakes occurred in the northern part of the Solomon Islands, within Papua New Guinea as a doublet earthquake. The first large shock occurred on July 14 at 06:11 UTC with a magnitude of Mw 8.0. The second large event occurred on July 26 at 01:23 UTC with a magnitude of Mw 8.1. The initial event on July 14 caused a tsunami, which was observed in Rabaul. The earthquake of July 26 triggered a tsunami with a 3.4 m (11 ft) runup in New Britain.
The 1964 Guerrero earthquake occurred on July 6 at 01:22 local time in Guerrero, Mexico. The magnitude of this earthquake was given as Ms 7.4, or ML 7.2.
The 1917 Samoa earthquake occurred on June 26 at 05:49 UTC. The epicenter was located in the southwest of the Samoan Islands. The earthquake had a magnitude of Mw 8.5, or Ms 8.4, one of the strongest earthquakes ever recorded in this region.
The 1981 Playa Azul earthquake occurred on October 24, 1981, at 21:22 local time. It was located near Playa Azul, Michoacán, Mexico. The magnitude of the earthquake was Mw 7.2, or Ms 7.3. Three deaths were reported, two from Michoacán and one from Mexico City. Some buildings were damaged in both Michoacán and Mexico City. A small tsunami was registered in Acapulco with a maximum height of 9 cm.
The November 1960 Peru earthquake occurred offshore northern Peru on November 20 at 17:02 local time. The magnitude of the earthquake was put at Ms 6.75 by using the conventional magnitude measurement within a shorter duration of ~20 s. However, there is a large discrepancy between the magnitudes in Ms and Mw in this earthquake. The discrepancy was resulted from that the earthquake had a long source duration of about 130 s, and by calculating the seismic moment, the magnitude would be Mw 7.6 or Mw 7.8, according to different sources. This earthquake belongs to a category of earthquakes with slow rupture velocities and potential of producing tsunamis larger than those expected from the moment magnitudes.
The 1942 Peru earthquake occurred on August 24 at 17:50 local time and was located near the border of the departments of Ica and Arequipa, Peru. It had a magnitude of Mw 8.2 or Ms 8.4.
The 1911 Kikai Island earthquake occurred on June 15 at 14:26 UTC. The earthquake was located near Kikai Island, Japan. It had a magnitude of Ms 8.1.
The 1931 Southwest Sumatra earthquake occurred on 25 September at 05:59 UTC. It was located between the Enggano Island and Sumatra, Indonesia, then under the rule of Dutch East Indies. It had a magnitude of Mw 7.3, or Ms 7.5.
The 1968 Sulawesi earthquake struck Indonesia on August 14. It had a Richter magnitude of 7.4, spawned a large tsunami, and killed roughly 200 people.