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Definition of foreshock in English: foreshocknounˈfɔːʃɒkˈfôrˌSHäk A mild tremor preceding the violent shaking movement of an earthquake. （地震的）前震 a foreshock had been reported before the 1966 earthquake Example sentencesExamples - A magnitude 6.7 temblor on Oct. 23 is now considered a foreshock.
- Probably the most spectacular example was the short-term prediction of the 1975, M 7.3, Haicheng earthquake by the Chinese, based on earthquake foreshocks, unusual animal behaviour, and a few other precursors.
- The time between the last foreshock and the mainshock varies somewhat, but is typically less than a day.
- AGU is hosting a press conference on the 7.9 Denali earthquake that occurred on Nov. 3, 2002, in Alaska, as well as its Oct. 23, 2002, foreshock of 6.7.
- It apparently occurred without any significant foreshocks.
- A maximum probability gain of more than 20,000 is obtained if there are two or more foreshocks.
- With the second model, accelerating fault slip on the mainshock nucleation zone triggers foreshocks.
- It was later discovered, though, that a rare series of small tremors, called foreshocks, occurred before the large quake hit the city.
- This was the second major earthquake along this portion of the fault in less than two weeks - a magnitude 6.7 earthquake occurred a few miles to the west on October 23 and is now believed to be a foreshock of Sunday's massive quake.
- The short-term prediction was possible primarily on a series of foreshocks that began four days prior to the main shock.
- Sensor data from the National Oceanic and Atmospheric Administration pinpointed the time and location of foreshocks and earthquakes.
- The rate of main shocks after foreshocks follows the same patterns as aftershocks after main shocks.
- From historical accounts, the epicenters of the foreshocks were located in central California near the northwestern extent of the main shock fault rupture.
- The study, reported in today's Nature, is the first to suggest that small seismic shocks or foreshocks preceding a major earthquake can be used in some cases to predict the main tremors.
- Scientists are still studying foreshocks carefully to see if they can alert us to a possible bigger earthquake.
- Some have foreshocks signalling what is to come - but, as those so rudely awakened last night know only too well, others do not.
- Most people think of foreshocks as the small earthquakes that trigger a big quake.
- At almost precisely 5: 12 a.m., local time, a foreshock occurred with sufficient force to be felt widely throughout the San Francisco Bay area.
- Even in areas where foreshocks are fairly common, there is no way of distinguishing a foreshock from an independent earthquake.
- The occurrence of foreshocks and aftershocks can be attributed to the nonconservative character of the Olami-Feder-Christensen model.
Synonyms earth tremor, tremor, convulsion, shock, aftershock
Definition of foreshock in US English: foreshocknounˈfôrˌSHäk A mild tremor preceding the violent shaking movement of an earthquake. （地震的）前震 a foreshock had been reported before the 1966 earthquake Example sentencesExamples - Probably the most spectacular example was the short-term prediction of the 1975, M 7.3, Haicheng earthquake by the Chinese, based on earthquake foreshocks, unusual animal behaviour, and a few other precursors.
- It was later discovered, though, that a rare series of small tremors, called foreshocks, occurred before the large quake hit the city.
- Even in areas where foreshocks are fairly common, there is no way of distinguishing a foreshock from an independent earthquake.
- This was the second major earthquake along this portion of the fault in less than two weeks - a magnitude 6.7 earthquake occurred a few miles to the west on October 23 and is now believed to be a foreshock of Sunday's massive quake.
- The rate of main shocks after foreshocks follows the same patterns as aftershocks after main shocks.
- Sensor data from the National Oceanic and Atmospheric Administration pinpointed the time and location of foreshocks and earthquakes.
- The occurrence of foreshocks and aftershocks can be attributed to the nonconservative character of the Olami-Feder-Christensen model.
- The time between the last foreshock and the mainshock varies somewhat, but is typically less than a day.
- It apparently occurred without any significant foreshocks.
- A magnitude 6.7 temblor on Oct. 23 is now considered a foreshock.
- AGU is hosting a press conference on the 7.9 Denali earthquake that occurred on Nov. 3, 2002, in Alaska, as well as its Oct. 23, 2002, foreshock of 6.7.
- Some have foreshocks signalling what is to come - but, as those so rudely awakened last night know only too well, others do not.
- Scientists are still studying foreshocks carefully to see if they can alert us to a possible bigger earthquake.
- At almost precisely 5: 12 a.m., local time, a foreshock occurred with sufficient force to be felt widely throughout the San Francisco Bay area.
- From historical accounts, the epicenters of the foreshocks were located in central California near the northwestern extent of the main shock fault rupture.
- The study, reported in today's Nature, is the first to suggest that small seismic shocks or foreshocks preceding a major earthquake can be used in some cases to predict the main tremors.
- A maximum probability gain of more than 20,000 is obtained if there are two or more foreshocks.
- Most people think of foreshocks as the small earthquakes that trigger a big quake.
- With the second model, accelerating fault slip on the mainshock nucleation zone triggers foreshocks.
- The short-term prediction was possible primarily on a series of foreshocks that began four days prior to the main shock.
Synonyms earth tremor, tremor, convulsion, shock, aftershock
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