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TitreSub-bottom profiler survey
TéléchargerTéléchargement (publication entière)
AuteurRiedel, M; Hong, J K; Conway, K; Shin, D S; Kim, S; Kim, H J; Choi, H K; Kim, Y -G; Seo, N; Ulmi, M; Kim, H S; Byun, E J; Lee, Y J
SourceOverview of field operations during a 2013 research expedition to the southern Beaufort Sea on the RV Araon; par Jin, Y K; Riedel, M; Hong, J K; Nam, S I; Jung, J Y; Ha, S Y; Lee, J Y; Kim, G Y; Yoo, J; Kim, H S; Kim, G; Conway, K; Standen, G; Ulmi, M; Schreker, M; Commission géologique du Canada, Dossier public 7754, 2015 p. 59-77, https://doi.org/10.4095/295967
Année2015
ÉditeurRessources naturelles Canada
Documentdossier public
Lang.anglais
DOIhttps://doi.org/10.4095/295967
Medianumérique; en ligne
Référence reliéeCette publication est contenue dans Jin, Y K; Riedel, M; Hong, J K; Nam, S I; Jung, J Y; Ha, S Y; Lee, J Y; Kim, G Y; Yoo, J; Kim, H S; Kim, G; Conway, K; Standen, G; Ulmi, M; Schreker, M; (2015). Overview of field operations during a 2013 research expedition to the southern Beaufort Sea on the RV Araon, Commission géologique du Canada, Dossier public 7754
Formatspdf
ProvinceRégion extracotière du nord
Lat/Long OENS-141.0000 -133.0000 70.2500 68.0000
Sujetslevés géophysiques; sismographes; réseau sismique; séismologie; ondes sismiques; gaz; levés acoustiques; levés acoustiques marins; hydrate; pergélisol; congélation du sol; glace fossile; bathymétrie; plate-forme continentale; talus continental; dépôts de pentes; géophysique; combustibles fossiles
Illustrationslocation maps; profiles; tables
Consultation
Endroit
 
Bibliothèque de Ressources naturelles Canada - Ottawa (Sciences de la Terre)
 
ProgrammeRisques géo marines, Géoscience pour la sécurité publique
Diffusé2015 02 17
Résumé(Sommaire disponible en anglais seulement)
During Expedition ARA04C, more than 3000 line-kilometers of sub-bottom profiler (SBP) data were collected, co-located with multibeam and backscatter data. These data are an essential part of the study of sub-seafloor permafrost distribution and further provide insights into sediment dynamics at critical boundaries, especially the shelf edge. Here, the occurrence of pingo-like features (PLFs) result in a characteristic, rugged landscape with thousands of PLFs piercing through the otherwise laminated sediments. More than 30 crossings of this critical shelf-edge boundary were made during this expedition, with locations specifically chosen to complement data acquired in 2012 with the Huntec system and previous vintage 3.5 kHz data that were provided by ArcticNet as part of the regional multibeam map of the study area. Critical new insights were gained at deep-water fluid expulsion zone, not previously imaged in the detail achieved during Expedition ARA04C. Critical new data was also acquired over the area of the "Gary Knolls", where PLF structures occur at the shelf edge in water depth of only 50 to 60m. All SBP data from this expedition will be post-processed and analyzed for the presence of sub-seafloor permafrost, occurrence of the PLF structures and indications for fluid and gas migration.
GEOSCAN ID295967