09 Nov 2020

maine earthquake history

For seismic migration, see, Shaking of the surface of the earth caused by a sudden release of energy in the crust, Intensity of earth quaking and magnitude of earthquakes. Earthquakes are caused mostly by rupture of geological faults but also by other events such as volcanic activity, landslides, mine blasts, and nuclear tests. Yearly Average Number of Earthquakes in Maine, Counties With The Highest Risk Of Earthquakes. an earthquake of 3.7–4.6 every year, an earthquake of 4.7–5.5 every 10 years, and an earthquake of 5.6 or larger every 100 years. Haruki Murakami's short fiction collection After the Quake depicts the consequences of the Kobe earthquake of 1995. The topmost, brittle part of the Earth's crust, and the cool slabs of the tectonic plates that are descending down into the hot mantle, are the only parts of our planet that can store elastic energy and release it in fault ruptures. [9] Thus, earthquakes with magnitudes much larger than 8 are not possible. 6.2 km from Epicenter at 43.968, -71.238 However, accurate recordings of earthquakes only began in the early 1900s, so it is too early to categorically state that this is the case. 1998. ", "Historic Earthquakes and Earthquake Statistics: Where do earthquakes occur? Earthquakes in Maine, Maine Geological Survey Maine has historically had a low but steady rate of earthquakes. at 03:41 November 25, 2018 UTC, Location: As a consequence, the first waves of a distant earthquake arrive at an observatory via the Earth's mantle. [77] For this reason, stories about earthquakes generally begin with the disaster and focus on its immediate aftermath, as in Short Walk to Daylight (1972), The Ragged Edge (1968) or Aftershock: Earthquake in New York (1999). For example, in the 1964 Alaska earthquake, soil liquefaction caused many buildings to sink into the ground, eventually collapsing upon themselves.[55]. [21] Most earthquake clusters consist of small tremors that cause little to no damage, but there is a theory that earthquakes can recur in a regular pattern. [59], Floods may be secondary effects of earthquakes, if dams are damaged. The Japan Meteorological Agency seismic intensity scale, the Medvedev–Sponheuer–Karnik scale, and the Mercalli intensity scale are based on the observed effects and are related to the intensity of shaking. 0.2 km from [44] Most of these earthquakes have small magnitudes. A small subset of earthquake ruptures appear to have propagated at speeds greater than the S-wave velocity. at 23:44 February 13, 2018 UTC, Location: (0.2 miles), 2020-03-09 18:57:15 UTC Existing structures can be modified by seismic retrofitting to improve their resistance to earthquakes. In the lower crust, they travel at about 6–7 km (3.7–4.3 mi) per second; the velocity increases within the deep mantle to about 13 km (8.1 mi) per second. In the Earth's interior, the shock- or P-waves travel much faster than the S-waves (approx. Earthquake warning systems have been developed that can provide regional notification of an earthquake in progress, but before the ground surface has begun to move, potentially allowing people within the system's range to seek shelter before the earthquake's impact is felt. The Greek philosopher Democritus (460–371 BCE) blamed water in general for earthquakes. A total of 19 historical tornado events that had recorded magnitude of 2 or above found in Maine. ", "Quake 'swarm' shakes Southern California", "Poseidon's Horses: Plate Tectonics and Earthquake Storms in the Late Bronze Age Aegean and Eastern Mediterranean", http://dapgeol.tripod.com/usgsearthquakemagnitudepolicy.htm, USGS Earthquake statistics table based on data since 1900, "Seismicity and earthquake hazard in the UK", "Earthquake Facts and Statistics: Are earthquakes increasing? Tilton The risk of tornado damage in Maine is much lower than the national average. This process of gradual build-up of strain and stress punctuated by occasional sudden earthquake failure is referred to as the elastic-rebound theory. Freedom Epicenter at 43.451, -71.586 [77] Jacob M. Appel's widely anthologized short story, A Comparative Seismology, features a con artist who convinces an elderly woman that an apocalyptic earthquake is imminent. The largest earthquake on record for Maine occurred on 12/25/1989, with a depth of 2.9 miles and a magnitude of 5.8 on the Richter scale in Aroostook County, ME. [23] In August 2012, a swarm of earthquakes shook Southern California's Imperial Valley, showing the most recorded activity in the area since the 1970s. Therefore, earthquakes lower the Earth's available elastic potential energy and raise its temperature, though these changes are negligible compared to the conductive and convective flow of heat out from the Earth's deep interior.[3]. Most fault surfaces do have such asperities, which leads to a form of stick-slip behavior. About 100,000 of these can be felt. Earthquake Information for Maine. By such analyses of seismograms the Earth's core was located in 1913 by Beno Gutenberg. Earthquakes associated with normal faults are generally less than magnitude 7. Dates are given in local Maine time (EST or EDT). (4.2 miles). * The information on this page is based on the global volcano database, the U.S. earthquake database of 1638-1985, and the U.S. Tornado and Weather Extremes database of 1950-2010. Such a pattern was observed in the sequence of about a dozen earthquakes that struck the North Anatolian Fault in Turkey in the 20th century and has been inferred for older anomalous clusters of large earthquakes in the Middle East. Loki's wife Sigyn stood by him with a bowl to catch the poison, but whenever she had to empty the bowl the poison dripped on Loki's face, forcing him to jerk his head away and thrash against his bonds, which caused the earth to tremble. Copyright © 2020 Homefacts.com (TM) . There are 301 earthquake incidents in Maine on record since 1931. A higher earthquake index value means a higher chance of an earthquake. (3.2 miles), 2018-12-03 23:56:22 UTC The effects of earthquakes include, but are not limited to, the following: Shaking and ground rupture are the main effects created by earthquakes, principally resulting in more or less severe damage to buildings and other rigid structures. (2.2 miles), 2018-02-15 14:28:55 UTC Earthquakes may cause landslips to dam rivers, which collapse and cause floods. [18] Earthquake swarms can serve as markers for the location of the flowing magma throughout the volcanoes. The differences in travel time from the epicenter to the observatory are a measure of the distance and can be used to image both sources of quakes and structures within the Earth. [53] The ground-shaking is measured by ground acceleration. (0.2 miles), 2020-03-15 03:07:39 UTC at 14:28 February 15, 2018 UTC, Location: In the upper crust, P-waves travel in the range 2–3 km (1.2–1.9 mi) per second (or lower) in soils and unconsolidated sediments, increasing to 3–6 km (1.9–3.7 mi) per second in solid rock. Tsunamis can also travel thousands of kilometers across open ocean and wreak destruction on far shores hours after the earthquake that generated them. The most important parameter controlling the maximum earthquake magnitude on a fault, however, is not the maximum available length, but the available width because the latter varies by a factor of 20. at 10:15 February 17, 2020 UTC, Location: An earthquake happens when so much stress builds up in the rocks that the rocks break. Farmington In the case of the San Andreas fault continental transform, many earthquakes occur away from the plate boundary and are related to strains developed within the broader zone of deformation caused by major irregularities in the fault trace (e.g., the "Big bend" region). An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves.

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