{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,3]],"date-time":"2026-07-03T04:52:57Z","timestamp":1783054377140,"version":"3.54.6"},"reference-count":25,"publisher":"American Geophysical Union (AGU)","issue":"5","license":[{"start":{"date-parts":[[2015,3,13]],"date-time":"2015-03-13T00:00:00Z","timestamp":1426204800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Geophysical Research Letters"],"published-print":{"date-parts":[[2015,3,16]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Laboratory experiments have shown that the <jats:italic>b<\/jats:italic> value in the size distribution of acoustic emission events decreases linearly with differential stress. There have been a number of observations that indicate that this relation may also hold for earthquakes. Here using a simple frictional strength model for stresses in the continental lithosphere combined with earthquake <jats:italic>b<\/jats:italic> values measured as a function of depth in a wide variety of tectonic regions, we verify and calibrate that relation, finding <jats:italic>b<\/jats:italic>\u2009=\u20091.23\u2009\u00b1\u20090.06\u2009\u2212\u2009(0.0012\u2009\u00b1\u20090.0003)(<jats:italic>\u03c3<\/jats:italic><jats:sub>1<\/jats:sub>\u2009\u2212\u2009<jats:italic>\u03c3<\/jats:italic><jats:sub>3<\/jats:sub>), where the stress difference (<jats:italic>\u03c3<\/jats:italic><jats:sub>1<\/jats:sub>\u2009\u2212\u2009<jats:italic>\u03c3<\/jats:italic><jats:sub>3<\/jats:sub>) is in megapascal. For subduction zones, we find that <jats:italic>b<\/jats:italic> value correlates linearly with the slab pull force and with the net reduction of plate interface normal force, both of which also indicate a negative linear relation between <jats:italic>b<\/jats:italic> value and differential stress.<\/jats:p>","DOI":"10.1002\/2014gl062863","type":"journal-article","created":{"date-parts":[[2015,2,13]],"date-time":"2015-02-13T12:06:52Z","timestamp":1423829212000},"page":"1399-1402","source":"Crossref","is-referenced-by-count":494,"title":["On the stress dependence of the earthquake <i>b<\/i> value"],"prefix":"10.1029","volume":"42","author":[{"given":"Christopher H.","family":"Scholz","sequence":"first","affiliation":[{"name":"Lamont\u2010Doherty Earth Observatory Columbia University  Palisades New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"13","published-online":{"date-parts":[[2015,3,13]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1029\/2001JB000680"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1029\/GL010i004p00297"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1029\/2012GL052822"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1029\/2011JB008763"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/grl.50507"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1029\/2010GL043066"},{"key":"e_1_2_6_8_1","doi-asserted-by":"crossref","first-page":"185","DOI":"10.1785\/BSSA0340040185","article-title":"Frequency of earthquake in California","volume":"34","author":"Gutenberg B.","year":"1944","journal-title":"Bull. 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