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Geological investigation of pockmarks in the Braemar Pockmarks SCI 2015

Marine JNCC Publications Seabed Habitats and Geology 0963-8091 Evidence Geomorphology Habitats Directive JNCC report series Marine Marine Habitat Mapping Marine Habitats Monitoring Surveillance and Monitoring 571 Braemar Pockmarks SCI Multibeam echo sounder Multi-beam echo sounder

Abstract

This report describes the findings of a desk study carried out by British Geological Survey (BGS) for the Joint Nature Conservation Committee (JNCC) covering the Braemar Pockmarks SCI area. The Braemar Pockmarks SCI is located in the UK Northern North Sea in the vicinity of the Braemar field (UKCS Block 16/3).

Focusing on the pockmarks found in and around the Braemar Pockmarks SCI area, this report looks at specific factors that influence the formation and exposure of carbonate structures within the pockmarks. The new data collected on a JNCC research cruise at the end of 2012, cruise CEND19x/12, in partnership with the Centre for Environment, Fisheries & Aquaculture Science (CEFAS), provided the main dataset for this study. The multibeam dataset collected was used to semi-automatically map and characterise the morphology of the pockmarks. The information extracted from the mapped pockmarks was then compared to the information extracted from previous surveys collected for BP. Backscatter data and side-scan sonar data was used to characterise the nature of the seafloor, in particular the presence of Methane-Derived Authigenic Carbonate (MDAC).

Resource type Publication

Topic category Environment

Reference date 2015·08·01

Citation
Gafeira, J. & Long, D. 2015. Geological investigation of pockmarks in the Braemar Pockmarks SCI, JNCC Report No. 571, JNCC, Peterborough, ISSN 0963-8091.

Lineage
This report describes the findings of a desk study, carried out by British Geological Survey, covering the Braemar Pockmarks SCI area.

Responsible organisation
Communications, JNCC publisher

Limitations on public access No limitations

Use constraints Available under the Open Government Licence 3.0

Metadata date 2020·02·25

Metadata point of contact
Communications, JNCC

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