dc.contributor.author | Khodabandeloo, Babak | |
dc.contributor.author | Landrø, Martin | |
dc.date.accessioned | 2018-09-27T11:41:47Z | |
dc.date.available | 2018-09-27T11:41:47Z | |
dc.date.created | 2018-06-14T09:27:58Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | Journal of the Acoustical Society of America. 2018, 143 (6), 3383-3393. | nb_NO |
dc.identifier.issn | 0001-4966 | |
dc.identifier.uri | http://hdl.handle.net/11250/2564989 | |
dc.description.abstract | For seismic air-gun arrays, ghost cavitation is assumed to be one of the main mechanisms for high-frequency signal generation. Ghost cavitation signals are weak for seismic frequencies (<300 Hz) and do not contribute to seismic reflection profiling. In the current experiment, the ghost cavity cloud is monitored by a high-speed video camera using 120 frames per second. This is, as far as the authors know, the first convincing photographic evidence of ghost-induced cavitation. In addition to video recording, acoustic signals were recorded with a sampling rate of 312.5 kHz using broadband hydrophones suspended 17 m below the array. The pressure drop around the source array is estimated using air-gun modeling followed by a phenomenological modeling of the growth and collapse of each vapor cavity. The cumulative effect of cavity collapses is modeled based on linear superposition of the acoustic signals generated by individual cavities. The simulated acoustic ghost cavitation signal and the corresponding cavity cloud show good agreement with the field data. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Acoustical Society of America | nb_NO |
dc.title | Acoustically induced cavity cloud generated by air-gun arrays—Comparing video recordings and acoustic data to modeling | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | publishedVersion | nb_NO |
dc.source.pagenumber | 3383-3393 | nb_NO |
dc.source.volume | 143 | nb_NO |
dc.source.journal | Journal of the Acoustical Society of America | nb_NO |
dc.source.issue | 6 | nb_NO |
dc.identifier.doi | 10.1121/1.5040490 | |
dc.identifier.cristin | 1591075 | |
dc.relation.project | Norges forskningsråd: 228107 | nb_NO |
dc.relation.project | Norges forskningsråd: 228400 | nb_NO |
dc.description.localcode | Locked until 7.12.2018 due to copyright restrictions. Copyright 2018 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. The following article appeared in Journal of the Acoustical Society of America and may be found at https://doi.org/10.1121/1.5040490 | nb_NO |
cristin.unitcode | 194,64,90,0 | |
cristin.unitcode | 194,63,35,0 | |
cristin.unitname | Institutt for geovitenskap og petroleum | |
cristin.unitname | Institutt for elektroniske systemer | |
cristin.ispublished | true | |
cristin.fulltext | preprint | |
cristin.qualitycode | 2 | |