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dc.contributor.authorYang, Zhaohui
dc.contributor.authorSheehan, Anne F.
dc.contributor.authorCollins, John A.
dc.contributor.authorLaske, Gabi
dc.date.accessioned2012-11-28T20:26:28Z
dc.date.available2014-10-22T08:57:23Z
dc.date.issued2012-10-16
dc.identifier.citationGeochemistry Geophysics Geosystems 13 (2012): Q10011en_US
dc.identifier.urihttp://hdl.handle.net/1912/5589
dc.descriptionAuthor Posting. © American Geophysical Union, 2012. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geochemistry Geophysics Geosystems 13 (2012): Q10011, doi:10.1029/2012GC004201.en_US
dc.description.abstractWe analyze the characteristics of ambient noise recorded on ocean-bottom seismographs using data from the 2009–2010 MOANA (Marine Observations of Anisotropy Near Aotearoa) seismic experiment deployed west and east of South Island, New Zealand. Microseism and infragravity noise peaks are clear on data recorded on the vertical channel of the seismometer and on the pressure sensor. The noise levels in the infragravity band (<0.03 Hz) on the horizontal seismometer channels are too high to show the infragravity peak. There is a small difference (~0.25 Hz versus ~0.2 Hz) in microseism peak frequencies between the two sides of the South Island on all three seismic channels. Our results show clear depth dependence between the peak frequency of infragravity waves and the water depth. We find that the product of water depth and wave number at the peak frequency is a constant, koH = 1.5. This relationship can be used to determine the variation of phase and group velocity of infragravity waves with water depth, and the location of the infragravity peak and corresponding noise notch at any water depth. These estimates of spectral characteristics, particularly low noise bands, are useful for future OBS deployments.en_US
dc.description.sponsorshipThe collection of OBS data was supported by the National Science Foundation Continental Dynamics program under grants EAR-0409564, EAR-0409609, and EAR-0409835.en_US
dc.format.mimetypetext/plain
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.urihttps://doi.org/10.1029/2012GC004201
dc.subjectNew Zealanden_US
dc.subjectOBSen_US
dc.subjectContinental shelfen_US
dc.subjectInfragravity waveen_US
dc.subjectNoiseen_US
dc.titleThe character of seafloor ambient noise recorded offshore New Zealand : results from the MOANA ocean bottom seismic experimenten_US
dc.typeArticleen_US
dc.description.embargo2013-04-16en_US
dc.identifier.doi10.1029/2012GC004201


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