Low frequency cultural noise
Abnormal cultural seismic noise is observed in the frequency range of 0.01–0.05 Hz. Cultural noise generated by human activities is generally observed in frequencies above 1 Hz, and is greater in the daytime than at night. The low‐frequency noise presented in this paper exhibits a characteristic amp...
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| Veröffentlicht in: | Geophysical research letters 2009-09, Vol.36 (17), p.np-n/a |
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| creator | Sheen, Dong-Hoon Shin, Jin Soo Kang, Tae-Seob Baag, Chang-Eob |
| description | Abnormal cultural seismic noise is observed in the frequency range of 0.01–0.05 Hz. Cultural noise generated by human activities is generally observed in frequencies above 1 Hz, and is greater in the daytime than at night. The low‐frequency noise presented in this paper exhibits a characteristic amplitude variation and can be easily identified from time domain seismograms in the frequency range of interest. The amplitude variation is predominantly in the vertical component, but the horizontal components also show variations. Low‐frequency noise is markedly periodic, which reinforces its interpretation as cultural noise. Such noise is observed world‐wide, but is limited to areas in the vicinity of railways. The amplitude variation in seismograms correlates strongly with railway timetables, and the waveform shows a wavelength shift associated with the Doppler effect, which indicates that the origin of seismic background noise in the frequency range 0.01–0.05 Hz is railways. |
| doi_str_mv | 10.1029/2009GL039625 |
| format | Article |
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Cultural noise generated by human activities is generally observed in frequencies above 1 Hz, and is greater in the daytime than at night. The low‐frequency noise presented in this paper exhibits a characteristic amplitude variation and can be easily identified from time domain seismograms in the frequency range of interest. The amplitude variation is predominantly in the vertical component, but the horizontal components also show variations. Low‐frequency noise is markedly periodic, which reinforces its interpretation as cultural noise. Such noise is observed world‐wide, but is limited to areas in the vicinity of railways. The amplitude variation in seismograms correlates strongly with railway timetables, and the waveform shows a wavelength shift associated with the Doppler effect, which indicates that the origin of seismic background noise in the frequency range 0.01–0.05 Hz is railways.</description><identifier>ISSN: 0094-8276</identifier><identifier>EISSN: 1944-8007</identifier><identifier>DOI: 10.1029/2009GL039625</identifier><identifier>CODEN: GPRLAJ</identifier><language>eng</language><publisher>Washington, DC: Blackwell Publishing Ltd</publisher><subject>Amplitudes ; Background noise ; Earth sciences ; Earth, ocean, space ; Earthquakes ; Exact sciences and technology ; Frequency ranges ; Noise ; Railroads ; Railway engineering ; Railways ; seismic noise ; Seismograms ; Seismology</subject><ispartof>Geophysical research letters, 2009-09, Vol.36 (17), p.np-n/a</ispartof><rights>Copyright 2009 by the American Geophysical Union.</rights><rights>2009 INIST-CNRS</rights><rights>Copyright 2009 by American Geophysical Union</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a5436-8baba5d3f74d935f2e8c637d734abb1d42501e562fe085e50ee6a980293bd6e63</citedby><cites>FETCH-LOGICAL-a5436-8baba5d3f74d935f2e8c637d734abb1d42501e562fe085e50ee6a980293bd6e63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1029%2F2009GL039625$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2F2009GL039625$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>315,781,785,1418,1434,11519,27929,27930,45579,45580,46414,46473,46838,46897</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=21997346$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Sheen, Dong-Hoon</creatorcontrib><creatorcontrib>Shin, Jin Soo</creatorcontrib><creatorcontrib>Kang, Tae-Seob</creatorcontrib><creatorcontrib>Baag, Chang-Eob</creatorcontrib><title>Low frequency cultural noise</title><title>Geophysical research letters</title><addtitle>Geophys. 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The amplitude variation in seismograms correlates strongly with railway timetables, and the waveform shows a wavelength shift associated with the Doppler effect, which indicates that the origin of seismic background noise in the frequency range 0.01–0.05 Hz is railways.</description><subject>Amplitudes</subject><subject>Background noise</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Earthquakes</subject><subject>Exact sciences and technology</subject><subject>Frequency ranges</subject><subject>Noise</subject><subject>Railroads</subject><subject>Railway engineering</subject><subject>Railways</subject><subject>seismic noise</subject><subject>Seismograms</subject><subject>Seismology</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNqFkc1Lw0AQxRdRsFZvHj0UQfBgdHdnP7JHKRqFqCiVHpdNsoHUNKm7DbX_vVtSinjQ0wzM7z3mzSB0SvA1wVTdUIxVkmJQgvI9NCCKsSjGWO6jQZiEnkpxiI68n2GMAQMZoLO0XY1KZz872-TrUd7Vy86ZetS0lbfH6KA0tbcn2zpE7_d3k_FDlL4kj-PbNDKcgYjizGSGF1BKVijgJbVxLkAWEpjJMlIwyjGxXNDS4phbjq0VRsVhY8gKYQUM0WXvu3BtWMQv9bzyua1r09i285oIRRkRUtH_Uc4IKBXDBj3_hc7azjUhiI6ZopRwgABd9VDuWu-dLfXCVXPj1ppgvTmq_nnUgF9sPY3PTV060-SV32koUSqk3iSiPbeqarv-01MnbykV4TNBFPWiyi_t105k3IcWEiTX0-dEw9PT63Q8kTqFb3MkkLc</recordid><startdate>200909</startdate><enddate>200909</enddate><creator>Sheen, Dong-Hoon</creator><creator>Shin, Jin Soo</creator><creator>Kang, Tae-Seob</creator><creator>Baag, Chang-Eob</creator><general>Blackwell Publishing Ltd</general><general>American Geophysical Union</general><general>John Wiley & Sons, Inc</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TG</scope><scope>7TN</scope><scope>7XB</scope><scope>88I</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>8G5</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>FR3</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>H8D</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope><scope>L6V</scope><scope>L7M</scope><scope>M2O</scope><scope>M2P</scope><scope>M7S</scope><scope>MBDVC</scope><scope>P5Z</scope><scope>P62</scope><scope>PATMY</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>PYCSY</scope><scope>Q9U</scope></search><sort><creationdate>200909</creationdate><title>Low frequency cultural noise</title><author>Sheen, Dong-Hoon ; 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Res. Lett</addtitle><date>2009-09</date><risdate>2009</risdate><volume>36</volume><issue>17</issue><spage>np</spage><epage>n/a</epage><pages>np-n/a</pages><issn>0094-8276</issn><eissn>1944-8007</eissn><coden>GPRLAJ</coden><abstract>Abnormal cultural seismic noise is observed in the frequency range of 0.01–0.05 Hz. Cultural noise generated by human activities is generally observed in frequencies above 1 Hz, and is greater in the daytime than at night. The low‐frequency noise presented in this paper exhibits a characteristic amplitude variation and can be easily identified from time domain seismograms in the frequency range of interest. The amplitude variation is predominantly in the vertical component, but the horizontal components also show variations. Low‐frequency noise is markedly periodic, which reinforces its interpretation as cultural noise. Such noise is observed world‐wide, but is limited to areas in the vicinity of railways. The amplitude variation in seismograms correlates strongly with railway timetables, and the waveform shows a wavelength shift associated with the Doppler effect, which indicates that the origin of seismic background noise in the frequency range 0.01–0.05 Hz is railways.</abstract><cop>Washington, DC</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/2009GL039625</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Amplitudes Background noise Earth sciences Earth, ocean, space Earthquakes Exact sciences and technology Frequency ranges Noise Railroads Railway engineering Railways seismic noise Seismograms Seismology |
| title | Low frequency cultural noise |
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