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Utilizing basic relations between local brittle failures and gradual inelastic strain in a viscoelastic damage rheology model, we develop connections between aftershock decay rates and the aftershocks\u2010induced component of geodetic deformation. The discussed mechanism is relevant for postseismic relaxation produced by sources located within the seismogenic zone, and especially in regions that overlap locations of high aftershocks activity. Assuming the Omori\u2010Utsu decay rate for aftershocks, we find that the temporal decay of the damage\u2010related postseismic relaxation follows a generalized power\u2010law relation with the standard Omori\u2010Utsu law as a limit case. The results provide a way for estimating the separate contributions to observed postseismic displacements that stem from brittle failures in the seismogenic zone (aftershocks) and other (aseismic) processes. Using the obtained theoretical expectations, we analyze postseismic displacements measured by GPS stations around the North Anatolian fault \u223c3 months following the 1999 <jats:italic>M<\/jats:italic>7.4 \u0130zmit earthquake. We find that the observed postseismic displacements decay slower than the aftershock seismicity. Based on our theoretical results, we conclude that up to 50% of the measured surface displacements at near\u2010fault sites can be attributed to aftershock\u2010induced inelastic deformation in the seismogenic zone. The remainder postseismic deformation can generally be explained by relaxation in the deeper ductile substrate.<\/jats:p>","DOI":"10.1029\/2010jb007532","type":"journal-article","created":{"date-parts":[[2010,10,29]],"date-time":"2010-10-29T20:00:56Z","timestamp":1288382456000},"source":"Crossref","is-referenced-by-count":14,"title":["Postseismic deformation induced by brittle rock damage of aftershocks"],"prefix":"10.1029","volume":"115","author":[{"given":"Lifeng","family":"Wang","sequence":"first","affiliation":[{"name":"Deutsches GeoForschungsZentrum  Potsdam Germany"},{"name":"China Earthquake Networks Center China Earthquake Administration  Beijing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sebastian","family":"Hainzl","sequence":"additional","affiliation":[{"name":"Deutsches GeoForschungsZentrum  Potsdam Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M.","family":"Sinan \u00d6zeren","sequence":"additional","affiliation":[{"name":"Istanbul Technical University  Istanbul Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yehuda","family":"Ben\u2010Zion","sequence":"additional","affiliation":[{"name":"Department of Earth Sciences University of Southern California  Los Angeles California USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"13","published-online":{"date-parts":[[2010,10,30]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.tecto.2004.07.020"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1029\/2007JB005063"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1029\/2008RG000260"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00024\u2010002\u20108740\u20109"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365\u2010246X.2006.02878.x"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1029\/92JB02154"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.1365\u2010246X.2003.01870.x"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1029\/91GL00469"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365\u2010246X.2006.03027.x"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1029\/96JB03171"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1785\/0120000833"},{"key":"e_1_2_7_13_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.1365-246X.2003.02001.x"},{"key":"e_1_2_7_14_1","doi-asserted-by":"publisher","DOI":"10.1029\/95JB00313"},{"key":"e_1_2_7_15_1","doi-asserted-by":"publisher","DOI":"10.1029\/92JB01866"},{"key":"e_1_2_7_16_1","doi-asserted-by":"publisher","DOI":"10.1029\/2005JB003978"},{"key":"e_1_2_7_17_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.282.5394.1689"},{"key":"e_1_2_7_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/0040-1951(92)90055-B"},{"key":"e_1_2_7_19_1","doi-asserted-by":"publisher","DOI":"10.1029\/2006JB004629"},{"key":"e_1_2_7_20_1","doi-asserted-by":"publisher","DOI":"10.1785\/0120000836"},{"key":"e_1_2_7_21_1","doi-asserted-by":"publisher","DOI":"10.1029\/2008JB006021"},{"key":"e_1_2_7_22_1","doi-asserted-by":"publisher","DOI":"10.1029\/2004JB002985"},{"key":"e_1_2_7_23_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.1074671"},{"key":"e_1_2_7_24_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00024\u2010009\u20100522\u20101"},{"key":"e_1_2_7_25_1","doi-asserted-by":"publisher","DOI":"10.1038\/nature02784"},{"key":"e_1_2_7_26_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365\u2010246X.2004.02452.x"},{"key":"e_1_2_7_27_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365\u2010246X.2009.04200.x"},{"key":"e_1_2_7_28_1","doi-asserted-by":"publisher","DOI":"10.1785\/0120000832"},{"issue":"52","key":"e_1_2_7_29_1","article-title":"Earthquake\u2010cycle models as tie\u2010breakers: Assessing candidate rheologies for ongoing Izmit earthquake postseismic deformation","volume":"87","author":"Hearn E. 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