It started at 9:40 am and was followed by tsunamis and fires. The duration of shaking at a point on the ground depends on how long the earthquake took to occur and how the waves move through the ground to that point. If there are a lot of reflections and resonances near the point (for instance in a sedimentary valley) the shaking will last longer. 3 What was the largest earthquake ever recorded? This earthquake had the longest duration of faulting ever observed, between 8.3 and 10 minutes. The duration of an earthquake is related to its magnitude but not in a perfectly strict sense. when someone says "I felt it shake for 10 seconds" they are making a The Sumatra earthquake of 2004 was one of the worst and longest in history. By comparison, the 1960 earthquake in Chile was magnitude 9.5, and the 1964 Alaska earthquake was magnitude 9.2. This is because the fault rupture spreads very quickly, so the whole process of faulting is over very quickly. The concept of Earthquake Duration Magnitude - originally proposed by Bisztricsany in 1958 using surface waves only - is based on the realization that on a recorded earthquake seismogram, the total length of the seismic wavetrain - sometimes referred to as the CODA - reflects its size.Thus larger earthquakes give longer seismograms [as well as stronger seismic waves] than small ones. Top 5 longest lasting earthquakes Sumatra Earthquake #1 The Sumatra earthquake was 500-600 seconds,so about 10 minutes the earthquake was formed by tectonic plates collided beneath the Indian ocean that caused the earthquake and it caused a tsunami The Libson #2 The Libson This earthquake had the longest duration of faulting ever observed, between 8.3 and 10 minutes. The actual duration of slip on the earthquake fault is usually quite brief — just a few seconds for a magnitude 6 for example. The longest earthquake was in Lisbon, Portugal in 1755 and it lasted 10 minutes. With a magnitude of between 9.1 and 9.3, it is the second largest earthquake ever recorded on a seismograph.

This earthquake with an epicenter beneath Izu Ōshima Island in Sagami Bay, shook the … 7 How far can a 9.0 earthquake be felt? The first is the length of time it takes for the fault to rupture and the second is the length of time shaking is felt at any given point (e.g. Lists of earthquakes. With a magnitude of 9.1 to 9.3, it lasted at least 10 minutes. In an area without resonances (for instance on a hard block of rock) it will last a shorter time. 2 How long does a 9.0 earthquake last for? 6 Is a 7.0 earthquake strong?

8 Is … The Sumatran-Andaman earthquake on December 26, 2004, is the longest lasting earthquake ever recorded.

It killed between 10000 and 100000 people 1 How long is the average earthquake? 4 How far can a 4.4 earthquake be felt? Shaking duration reported between 4 and 10 minutes, devastating Tokyo, Yokohama, Chiba, Kanagawa, and Shizuoka. 5 Has there ever been a 9.0 earthquake? Dramatic new data from the December 26, 2004, Sumatran-Andaman earthquake that generated deadly tsunamis show the event created the longest fault rupture and the longest duration of … With a magnitude of between 9.1 and 9.3, this earthquake is the second largest ever recorded, and it also had the longest duration, lasting between eight and 10 minutes. The continuous shaking lasted from 500 to 600 seconds, or about 10 minutes. The Sumatran-Andaman earthquake, which had a magnitude of 9.1 to 9.3, occurred at the bottom of the Indian Ocean in the subduction zone between the Indo-Australian and Eurasian tectonic plates. Indonesia, Sri Lanka, India, and Thailand were hardest hit. Record-setting features of the Sumatra-Andaman earthquake of Dec. 26, 2004, include the longest fault rupture ever observed (720 to 780 miles or 1,200 to 1,300 kilometers) and the longest duration of faulting (at least 10 minutes). This earthquake with an epicenter beneath Izu Ōshima Island in Sagami Bay, shook the Kantō plain on the Japanese island of Honshū at 11:58 am. A magnitude 6 earthquake several hundred kilometres away can be often be felt for 30–40 seconds. Contents. There are two ways to think about the duration of an earthquake.


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