{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,10]],"date-time":"2026-06-10T05:40:35Z","timestamp":1781070035521,"version":"3.54.1"},"reference-count":43,"publisher":"American Geophysical Union (AGU)","issue":"F2","license":[{"start":{"date-parts":[[2012,5,10]],"date-time":"2012-05-10T00:00:00Z","timestamp":1336608000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Geophys. Res."],"published-print":{"date-parts":[[2012,6]]},"abstract":"<jats:p>Sliding glaciers and brittle ice failure generate seismic body and surface wave energy characteristic to the source mechanism. Here we analyze continuous seismic recordings from an array of nine short\u2010period passive seismometers located on Bench Glacier, Alaska (USA) (61.033\u00b0N, 145.687\u00b0W). We focus on the arrival\u2010time and amplitude information of the dominant Rayleigh wave phase. Over a 46\u2010hour period we detect thousands of events using a cross\u2010correlation based event identification method. Travel\u2010time inversion of a subset of events (7% of the total) defines an active crevasse, propagating more than 200 meters in three hours. From the Rayleigh wave amplitudes, we estimate the amount of volumetric opening along the crevasse as well as an average bulk attenuation (\n<jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/jgrf946-math-0001.gif\" xlink:title=\"urn:x-wiley:01480227:media:jgrf946:jgrf946-math-0001\"\/> = 42) for the ice in this part of the glacier. With the remaining icequake signals we establish a diurnal periodicity in seismicity, indicating that surface run\u2010off and subglacial water pressure changes likely control the triggering of these surface events. Furthermore, we find that these events are too weak (i.e., too noisy) to locate individually. However, stacking individual events increases the signal\u2010to\u2010noise ratio of the waveforms, implying that these periodic sources are effectively stationary during the recording period.<\/jats:p>","DOI":"10.1029\/2011jf002259","type":"journal-article","created":{"date-parts":[[2012,4,2]],"date-time":"2012-04-02T07:52:50Z","timestamp":1333353170000},"source":"Crossref","is-referenced-by-count":47,"title":["Monitoring glacier surface seismicity in time and space using Rayleigh waves"],"prefix":"10.1029","volume":"117","author":[{"given":"T. D.","family":"Mikesell","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"K.","family":"van Wijk","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M. M.","family":"Haney","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. H.","family":"Bradford","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H. P.","family":"Marshall","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. T.","family":"Harper","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"13","published-online":{"date-parts":[[2012,5,10]]},"reference":[{"key":"e_1_2_8_2_1","volume-title":"Quantitative Seismology: Theory and Practice","author":"Aki K.","year":"2002"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.3189\/172756494794587276"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1038\/27889"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1029\/2004JF000120"},{"key":"e_1_2_8_6_1","volume-title":"Parameter Estimation and Inverse Problems","author":"Aster R.","year":"2005"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.3189\/172756409789097540"},{"key":"e_1_2_8_8_1","volume-title":"The Physics of Glaciers","author":"Cuffey K. 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