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Numerical experiments were conducted to derive wave period\u2010dependent thresholds for automated detection of ULF waves using the Lomb\u2010Scargle periodogram technique. The spatial occurrence distribution, frequency characteristics, seasonal effects, solar wind condition, and geomagnetic activity level dependence have been studied. Pc5 wave events were found to dominate at high and polar latitudes with a most probable frequency of 2.08\u00a0\u00b1\u00a00.07\u00a0mHz, while Pc3\u20104 waves were relatively more common at midlatitudes on the nightside with a most probable frequency of 11.39\u00a0\u00b1\u00a00.14\u00a0mHz. At high latitudes, the occurrence rate of Pc4\u20105 waves maximizes in the dusk sector and during winter. These events tend to occur during low geomagnetic activity and northward interplanetary magnetic field. For the category of radially bounded but longitudinally extended Pc4 events in the duskside ionosphere, an internal driving source is suggested. At midlatitudes, the poloidal Pc3\u20104 occurrence rate maximizes premidnight and during equinox. This tendency becomes more prominent with increasing auroral electrojet (AE) index and during southward interplanetary magnetic field, which suggests that many of these events are Pi2 and Pc3\u20104 pulsations associated with magnetotail dynamics during active geomagnetic intervals. The overall occurrence rate of Pc3\u20105 wave events is lowest in summer, which suggests that the ionospheric conductivity plays a role in controlling ULF wave occurrence.<\/jats:p>","DOI":"10.1029\/2017ja025033","type":"journal-article","created":{"date-parts":[[2018,5,9]],"date-time":"2018-05-09T14:28:16Z","timestamp":1525876096000},"page":"4215-4231","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":33,"title":["Survey of Ionospheric Pc3\u20105 ULF Wave Signatures in SuperDARN High Time Resolution Data"],"prefix":"10.1029","volume":"123","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8425-8241","authenticated-orcid":false,"given":"X.","family":"Shi","sequence":"first","affiliation":[{"name":"Bradley Department of Electrical and Computer Engineering Virginia Polytechnic Institute and State University  Blacksburg VA USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2747-7066","authenticated-orcid":false,"given":"J. 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