Seismic exploration noise reduction in the Marginal Ice Zone.
J Acoust Soc Am
; 136(1): EL47-52, 2014 Jul.
Article
en En
| MEDLINE
| ID: mdl-24993237
ABSTRACT
A sonobuoy field was deployed in the Marginal Ice Zone of the Fram Strait in June 2011 to study the spatial variability of ambient noise. High noise levels observed at 10-200 Hz are attributed to distant (1400 km range) seismic exploration. The noise levels decreased with range into the ice cover; the reduction is fitted by a spreading loss model with a frequency-dependent attenuation factor less than for under-ice interior Arctic propagation. Numerical modeling predicts transmission loss of the same order as the observed noise level reduction and indicates a significant loss contribution from under-ice interaction.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
J Acoust Soc Am
Año:
2014
Tipo del documento:
Article
País de afiliación:
Noruega