seis·​mic·​i·​ty | \ sīz-ˈmi-sə-tē How to pronounce seismicity (audio) , sīs-\

Definition of seismicity

: the relative frequency and distribution of earthquakes

Examples of seismicity in a Sentence

Recent Examples on the Web While there was no loss of life, and seismicity helped volcanologists identify potential fissure formation areas, 700 homes were destroyed, according to the New York Times. Lila Thulin, Smithsonian, "Riveting Footage Captures the Destruction of Last Year’s Volcanic Eruptions in Hawaii and Guatemala," 6 Sep. 2019 Just like historic seismicity, plate locking is more common in the northern and southern parts of Cascadia. The Conversation,, "Earthquake risk along NW coast is not the same for all areas," 8 July 2019 That means Californians should also appreciate the link between groundwater and seismicity, Wetzler says. Michael Price, Science | AAAS, "Sea of Galilee earthquakes triggered by excessive water pumping," 26 July 2019 However, in central Cascadia, underlying most of Oregon, there is very little seismicity. The Conversation,, "Earthquake risk along NW coast is not the same for all areas," 8 July 2019 Remember, that’s where researchers have already observed increased activity: the seismicity, locking, and tremor. The Conversation,, "Earthquake risk along NW coast is not the same for all areas," 8 July 2019 For decades, Jones said, scientists have detected a line of small earthquakes running southwest to northeast between Jurupa Valley and Fontana, on a geological feature called the Fontana seismicity trend, which isn’t officially a fault. Rong-gong Lin Ii,, "A swarm of 1,000 earthquakes hit Southern California — how nervous should we be?," 19 June 2019 Over the last four years, the agency received 367 disposal well applications in areas of historic seismicity. Sergio Chapa, Houston Chronicle, "3.6-magnitude earthquake hits Eagle Ford town southeast of San Antonio," 15 June 2019 There also are 90 active disposal wells in Reeves County, according to the Texas Railroad Commission, which in 2014 imposed new rules limiting injections in areas of high seismicity. John Maccormack, San Antonio Express-News, "Rash of earthquakes prompts fear of oil boom in Balmorhea," 15 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'seismicity.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of seismicity

1902, in the meaning defined above

Keep scrolling for more

Learn More about seismicity

Statistics for seismicity

Last Updated

26 Oct 2019

Time Traveler for seismicity

The first known use of seismicity was in 1902

See more words from the same year

More from Merriam-Webster on seismicity

Rhyming Dictionary: Words that rhyme with seismicity Encyclopedia article about seismicity

Comments on seismicity

What made you want to look up seismicity? Please tell us where you read or heard it (including the quote, if possible).


something of little or no value

Get Word of the Day daily email!

Test Your Vocabulary

Pass the Little Ribbons: A Pasta Word Quiz

  • rotelle pasta
  • Match the pasta to its meaning in English: Rotelle
Spell It

Can you spell these 10 commonly misspelled words?

Syn City

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!