1.Acoustic Plumes |
Plumes; Hydroacoustic plumes |
Discrete hyperbolic curve in the water column which is related to free gas bubbles in the water |
TAYLOR, (1992)TAYLOR, D. I. Nearshore shallow gas around the U.K. coast. Cont. Shelf Res., v. 12, n. 10, p. 1135-1144, 1992.; LEE et al., (2005)LEE, G. H.; KIM, D. C.; KIM, H. J.; JOU, H. T.; LEE, Y. J. Shallow gas in the central part of the Korea Strait shelf mud off the southeastern coast of Korea. Cont. Shelf Res., v. 25, n. 16, p. 2036-2052, 2005.; GARCIA-GIL et al., (2002)GARCIA-GIL, S.; VILAS, F.; GARCÍA-GARCÍA, A. Shallow gas features in incised-valley fills (Ría de Vigo, NW Spain): a case study. Cont. Shelf Res., v. 22, n. 16, p. 2303-2315, 2002.; FRAZÃO and VITAL, (2007)FRAZÃO, E.; VITAL, H. Estruturas rasas de gás em sedimentos no estuário Potengi (Nordeste do Brasil). Rev. Bras. Geof., v. 25, n. 1, p. 17-26, 2007.; DIEZ et al., (2007)DIEZ, R.; GARCÍA-GIL, S.; DURÁN, R.; VILAS, F. Gas accumulations and their association with particle size distribution patterns in the Ría de Arousa seabed (Galicia, NW Spain): an application of discriminant analysis. Geo-Mar. Lett., v. 27, n. 2-4, p. 89-102, 2007.; DUARTE et al., (2007)DUARTE, H.; PINHEIRO, L. M.; TEIXEIRA, F. C.; MONTEIRO, J. H. High-resolution seismic imaging of gas accumulations and seepage in the sediments of the Ria de Aveiro barrier lagoon (Portugal). Geo-Mar. Lett., v. 27, n. 2, p. 115-126, 2007.. |
4. Acoustic blanking |
Blankets; acoustic masking; gas blanket; blanking; acoustic turbidity |
Top of the feature strongly reflective, continuous, linear; masks any underlying seismic recording, preventing the connection of the gas to its source |
MISSIAEN et al. (2002)MISSIAEN, T.; MURPHY, S.; LONCKE, L.; HENRIET, J. P. Very high-resolution seismic mapping of shallow gas in the Belgian coastal zone. Cont. Shelf Res., v. 22, n. 16, p. 2291-2301, 2002.; EMEIS et al. (2004)EMEIS, K. C.; BRÜCHERT, V.; CURRIE, B.; ENDLER, R.; FERDELMAN, T.; KIESSLING, A.; LEIPE, T.; NOLI-PEARD, K.; STRUCK, U.; VOGT, T. Shallow gas in shelf sediments of the Namibian coastal upwelling ecosystem. Cont. Shelf Res., v. 24, n. 6, p. 627-642, 2004.; ORANGE et al. (2005)ORANGE, D.; GARCÍA-GARCÍA, A.; LORENSON, T.; NITTROUER, C.; MILLIGAN, T.; MISEROCCHI, S., LANGONE, L.; CORREGGIARI, A.; TRINCARDI, F. Shallow gas and flood deposition on the Po Delta. Mar. Geol., v. 222-223, p. 159-177, 2005.; LEE et al. (2005)LEE, G. H.; KIM, D. C.; KIM, H. J.; JOU, H. T.; LEE, Y. J. Shallow gas in the central part of the Korea Strait shelf mud off the southeastern coast of Korea. Cont. Shelf Res., v. 25, n. 16, p. 2036-2052, 2005.; DIEZ et al. (2007)DIEZ, R.; GARCÍA-GIL, S.; DURÁN, R.; VILAS, F. Gas accumulations and their association with particle size distribution patterns in the Ría de Arousa seabed (Galicia, NW Spain): an application of discriminant analysis. Geo-Mar. Lett., v. 27, n. 2-4, p. 89-102, 2007.; DUARTE et al. (2007)DUARTE, H.; PINHEIRO, L. M.; TEIXEIRA, F. C.; MONTEIRO, J. H. High-resolution seismic imaging of gas accumulations and seepage in the sediments of the Ria de Aveiro barrier lagoon (Portugal). Geo-Mar. Lett., v. 27, n. 2, p. 115-126, 2007.; JENSEN and BENNIKE (2009)JENSEN, J. B.; BENNIKE, O. Geological setting as background for methane distribution in Holocene mud deposits, Århus Bay, Denmark. Cont. Shelf Res., v. 29, n. 5-6, p. 775-784, 2009.; MAZUMDAR et al. (2009)MAZUMDAR, A.; PEKETI, A.; DEWANGAN, P.; BADESAB, F.; RAMPRASAD, T.; RAMANA, M. V.; PATIL, D. J.; DAYA, A. Shallow gas charged sediments off the Indian west coast: Genesis and distribution. Mar. Geol., v. 267, n. 1-2, p. 71-85, 2009.; SOUZA et al. (2011)SOUZA, J.; TESSLER, T.; FELIX, C.; FRANKLIN, L.; BENEDET, L.; SUTHARD, B.; DEMARCO, L. F. W.; BONETTI, J.; KLEIN, A. H. F. Gas features detected with ultra shallow water high resolution seismic in the North Bay, Santa Catarina state, Southern Brazil. In: XIV Congresso Latino Americano de Ciências do Mar. Balneário Camboriú: AOCEANO; 2011.; DEMARCO et al. (2012)DEMARCO, L. F. W.; GUESSER, V.; KLEIN, A. H. F.; AYRES, A.; FELIX, C.; BONETTI, J. Identificação de feições acústicas rasas de gás na Lagoa da Conceição, Ilha de Santa Catarina, SC. In: Congresso Brasileiro de Oceanografia. Rio de Janeiro: Congresso Brasileiro de Oceanografia, 2012.; GUESSER et al. (2012)GUESSER, V.; DEMARCO, L. F. W.; KLEIN, A. H. F.; AYRES NETO, A.; FELIX, C.; SOUZA, J.; BONETTI, J. Identificação das feições rasas de gás na região da Lagoa da Conceição e da Baía Norte na Ilha de Santa Catarina. In: V Simpósio Brasileiro de Geofísica. Salvador: V Simpósio Brasileiro de Geofísica, 2012.; WESCHENFELDER et al. (2006)WESCHENFELDER, J.; CORRÊA, I. C. S.; ALIOTTA, S.; PEREIRA, C. M.; VASCONCELLOS, V. E. B. Shallow gas accumulation in sediments of the Patos Lagoon, southern Brazil. An. Acad. Bras. Ciênc., v. 78, n. 3, p. 607-614, 2006.; FRAZÃO and VITAL (2007)FRAZÃO, E.; VITAL, H. Estruturas rasas de gás em sedimentos no estuário Potengi (Nordeste do Brasil). Rev. Bras. Geof., v. 25, n. 1, p. 17-26, 2007.; GARCIA-GIL et al. (2002)GARCIA-GIL, S.; VILAS, F.; GARCÍA-GARCÍA, A. Shallow gas features in incised-valley fills (Ría de Vigo, NW Spain): a case study. Cont. Shelf Res., v. 22, n. 16, p. 2303-2315, 2002.; MAZUMDAR et al. (2009)MAZUMDAR, A.; PEKETI, A.; DEWANGAN, P.; BADESAB, F.; RAMPRASAD, T.; RAMANA, M. V.; PATIL, D. J.; DAYA, A. Shallow gas charged sediments off the Indian west coast: Genesis and distribution. Mar. Geol., v. 267, n. 1-2, p. 71-85, 2009.; GORGAS et al. (2003)GORGAS, T. J.; KIM, G. Y.; PARK, S. C.; WILKENS, R. H.; KIM, D. C.; LEE, G. H.; SEO, Y. K. Evidence for gassy sediments on the inner shelf of SE Korea from geoacoustic properties. Cont. Shelf Res., v. 23, n. 8, p. 821-834, 2003.. |