dc.contributor.author | Landrø, Martin | |
dc.contributor.author | Langhammer, Jan | |
dc.date.accessioned | 2020-09-16T07:38:06Z | |
dc.date.available | 2020-09-16T07:38:06Z | |
dc.date.created | 2020-04-30T11:32:29Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Geophysics. 2020, 85 P27-P36. | en_US |
dc.identifier.issn | 0016-8033 | |
dc.identifier.uri | https://hdl.handle.net/11250/2677966 | |
dc.description.abstract | Field data acquired from a seismic vessel by a seabed hydrophone is used to analyze the broadband response (10 Hz to 62.5 kHz) for various source configurations: single air guns, clustered air guns, and a full array consisting of 30 air guns. The various parts of the acoustic signal are analyzed in detail, and it is found that a high-frequency signal arriving prior to the main peak of a single air-gun signal most likely is caused by small vapor cavities collapsing at or close to the surface of the gun. This is confirmed by high-speed photographs taken when a small air gun is fired in a water tank. When the full array is used, a second type of cavitation signal is observed: ghost cavitation caused by acoustic stimulation by the negative pressure that is backscattered from the free surface. As this ghost signal from 30 different guns arrives at a specific location in the water, cavities might be formed, and they create a high-frequency acoustic signal. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Society of Exploration Geophysicists | en_US |
dc.title | Comparing the broadband acoustic frequency response of single, clustered and arrays of marine air guns | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.pagenumber | P27-P36 | en_US |
dc.source.volume | 85 | en_US |
dc.source.journal | Geophysics | en_US |
dc.identifier.doi | 10.1190/geo2019-0768.1 | |
dc.identifier.cristin | 1808810 | |
dc.relation.project | Norges forskningsråd: 294404 | en_US |
dc.relation.project | Norges forskningsråd: 228107 | en_US |
dc.description.localcode | Use is subject to SEG terms of use and conditions. | en_US |
cristin.ispublished | true | |
cristin.fulltext | preprint | |
cristin.qualitycode | 2 | |