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dc.contributor.authorReddy, T.R.
dc.contributor.authorDewangan, P.
dc.contributor.authorArya, L.
dc.contributor.authorSingha, P.
dc.contributor.authorKameshRaju, K.A.
dc.date.accessioned2020-03-31
dc.date.accessioned2021-02-09T10:13:22Z
dc.date.available2020-01-03
dc.date.available2021-02-09T10:13:22Z
dc.date.issued2020
dc.identifier.citationSeismological Research Letters, vol.91(2A); 2020; 803-813
dc.identifier.issn0895-0695
dc.identifier.otherhttps://pubs.geoscienceworld.org/ssa/srl/article-abstract/doi/10.1785/0220190080/580482/
dc.identifier.urihttps://doi.org/10.1785/0220190080
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/8545
dc.descriptionIF2018 - 3.888
dc.description.abstractWe observed a harmonic noise (HN) in DEPAS ocean-bottom seismometers (OBSs) data recorded from the Andaman-Nicobar region. The HN is characterized by sharp spectral peaks with a fundamental frequency and several overtones occurring at integer multiples of the fundamental frequency. We used an automated algorithm to quantify the occurrence of HN for the entire four-month deployment period (1 January 2014 to 30 April 2014). The algorithm detected more than 23 days of HN for some OBS stations. The spectral analysis of the hourly count of HN shows distinct lunar and solar tidal periodicities at 4.14, 6.1, 6.22, 12, and 12.4 hr as well as 13.66 days. The observed periodicities provide evidence of tidal triggering of HN. The HN is generated by the strumming of head buoys due to seafloor currents initiated by oceanic tides in the Andaman-Nicobar region.
dc.languageen
dc.publisherSeismological Society of America (SSA)
dc.relation.ispartofSeismol Res Lett
dc.relation.isreferencedbySCI
dc.rightsOnly the author version of the copright reserved papers uploaded. Contact drs@nio.org for any complaints regarding copyright violations
dc.titleTidal Triggering of the Harmonic Noise in Ocean-Bottom Seismometers
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Dona Paula, Goa, India


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