Haklang SERPENT visit report
The SERPENT project made two visits to the Transocean Leader semisubmersible drilling rig to study seabed disturbance at the Statoil operated Haklang prospect in the Norwegian Sea in the autumn of 2008. Seabed depth at Haklang was 1250m and the water temperature was -1?C. Using the Oceaneering Magnu...
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Online Access: | https://eprints.soton.ac.uk/160921/ https://eprints.soton.ac.uk/160921/1/72_Haklang.pdf |
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ftsouthampton:oai:eprints.soton.ac.uk:160921 2024-04-28T08:32:54+00:00 Haklang SERPENT visit report Gates, A.R. Jones, D.O.B. 2010-07 text https://eprints.soton.ac.uk/160921/ https://eprints.soton.ac.uk/160921/1/72_Haklang.pdf en eng National Oceanography Centre https://eprints.soton.ac.uk/160921/1/72_Haklang.pdf Gates, A.R. and Jones, D.O.B. (2010) Haklang SERPENT visit report (National Oceanography Centre Southampton Research and Consultancy Report, 72) Southampton, UK. National Oceanography Centre 29pp. Monograph NonPeerReviewed 2010 ftsouthampton 2024-04-09T23:34:29Z The SERPENT project made two visits to the Transocean Leader semisubmersible drilling rig to study seabed disturbance at the Statoil operated Haklang prospect in the Norwegian Sea in the autumn of 2008. Seabed depth at Haklang was 1250m and the water temperature was -1?C. Using the Oceaneering Magnum ROV seabed disturbance was assessed by visual observations and sediment sampling immediately after drilling impact. Megafaunal community observations were used to determine the ecological changes. Video showed a cuttings pile with complete coverage of the seabed and absence of megafauna extending 25-55m from the well. Beyond this seabed coverage was heterogeneous with cuttings visible to at least 100m to the north west. Mean megafaunal abundance was low to a distance of 40 m. Cerianthids were the dominant organisms and were present closer to the well than other taxa, perhaps because of their burrowing habit. The longer term effects of this disturbance are unclear. In addition specimens of the invertebrate megafauna were collected at Haklang. Book Norwegian Sea University of Southampton: e-Prints Soton |
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Open Polar |
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University of Southampton: e-Prints Soton |
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ftsouthampton |
language |
English |
description |
The SERPENT project made two visits to the Transocean Leader semisubmersible drilling rig to study seabed disturbance at the Statoil operated Haklang prospect in the Norwegian Sea in the autumn of 2008. Seabed depth at Haklang was 1250m and the water temperature was -1?C. Using the Oceaneering Magnum ROV seabed disturbance was assessed by visual observations and sediment sampling immediately after drilling impact. Megafaunal community observations were used to determine the ecological changes. Video showed a cuttings pile with complete coverage of the seabed and absence of megafauna extending 25-55m from the well. Beyond this seabed coverage was heterogeneous with cuttings visible to at least 100m to the north west. Mean megafaunal abundance was low to a distance of 40 m. Cerianthids were the dominant organisms and were present closer to the well than other taxa, perhaps because of their burrowing habit. The longer term effects of this disturbance are unclear. In addition specimens of the invertebrate megafauna were collected at Haklang. |
format |
Book |
author |
Gates, A.R. Jones, D.O.B. |
spellingShingle |
Gates, A.R. Jones, D.O.B. Haklang SERPENT visit report |
author_facet |
Gates, A.R. Jones, D.O.B. |
author_sort |
Gates, A.R. |
title |
Haklang SERPENT visit report |
title_short |
Haklang SERPENT visit report |
title_full |
Haklang SERPENT visit report |
title_fullStr |
Haklang SERPENT visit report |
title_full_unstemmed |
Haklang SERPENT visit report |
title_sort |
haklang serpent visit report |
publisher |
National Oceanography Centre |
publishDate |
2010 |
url |
https://eprints.soton.ac.uk/160921/ https://eprints.soton.ac.uk/160921/1/72_Haklang.pdf |
genre |
Norwegian Sea |
genre_facet |
Norwegian Sea |
op_relation |
https://eprints.soton.ac.uk/160921/1/72_Haklang.pdf Gates, A.R. and Jones, D.O.B. (2010) Haklang SERPENT visit report (National Oceanography Centre Southampton Research and Consultancy Report, 72) Southampton, UK. National Oceanography Centre 29pp. |
_version_ |
1797589925446549504 |