BGS releases first in a series of new offshore maps of the UK seabed
BGS has released the first high-resolution, offshore map in a new series featuring the seabed around the UK.
06/04/2022 By BGS Press
New combined bedrock, sediment, bedrock structure and seabed geomorphology maps are available from BGS under the fine-scale maps section of the Offshore GeoIndex and are designed to be viewed at 1:10 000 scale or online as downloadable shapefiles.
Based primarily on data produced by UK Civil Hydrography Programme of the Maritime and Coastguard Agency and made available by the UK Hydrographic Office, they are of relevance to offshore developers who require a detailed understanding of the geology of the seabed. The maps include bathymetry data, backscatter imagery, grab samples and other existing datasets such as seismic, marine conservation zones, sediment texture sheets and existing 1:250 000-scale geological maps.
As the UK’s transition to renewable energy gathers pace, these maps will become increasingly valuable to industry and stakeholders with an interest in developing clean energy, from offshore wind to tidal streaming, and in carbon capture and storage.

Extent of the new Bristol Channel map. Contains OS data © Crown Copyright and database right 2020. The derived bathymetric layer was produced from Maritime and Coastguard Agency (MCA) data © Crown copyright. Not to be used for navigational purposes.
The first area to be published this month features a central section of the Bristol Channel, from Swansea Bay to Newport, which is home to the second largest tidal range in the world. The high-energy environment of the channel has attracted much interest in recent years for the use of the seabed for tidal power schemes, including tidal power schemes that have the potential to produce electricity from wave energy.
Adopting renewable energy and technologies requires a deep understanding of the seabed and so developers have a growing need for access to bathymetric data, enabling more detailed observations of seabed geomorphology that are central to such evaluations.
As well as being of use to offshore developers, the release of our new maps will benefit all kinds of applications: marine spatial planning, technological research and development, fishery resource management, environmental impact studies and climate change models, providing evidence for policy and decision makers.
Prof Emrys Phillips, BGS Quaternary and Glacial Scientist.
While mapping the seabed has been a major challenge for marine geoscientists over the years, the development in acoustic technologies has allowed for the collection of more, and much better resolution, data in much less time.
BGS has plans to release a suite of high-resolution maps in the future, including offshore Anglesey, Yorkshire and East Anglia, and further areas will be added to BGS GeoIndex Offshore as its marine mapping programme progresses.
This is a great example of using the excellent high quality freely available data collected under the CHP for a different reason from its original purpose and gaining extra geological insights and value from the data.
Mary Mowat, BGS Marine Data Manager
Relative topics
Related news

New data reveals latest mineral workings around Great Britain and Northern Ireland
01/04/2025
The newest release of BGS BritPits provides information on an additional 6500 surface and underground mineral workings.

New seabed geology maps to enable long term conservation around Ascension Island
01/04/2025
BGS deliver the first marine geology and habitat maps for one of the World’s largest marine protected areas.

New study reveals long-term effects of deep-sea mining and first signs of biological recovery
27/03/2025
BGS geologists were involved in new study revealing the long-term effects of seabed mining tracks, 44 years after deep-sea trials in the Pacific Ocean.

BGS announces new director of its international geoscience programme
17/03/2025
Experienced international development research leader joins the organisation.

Future projections for mineral demand highlight vulnerabilities in UK supply chain
13/03/2025
New Government-commissioned studies reveal that the UK may require as much as 40 per cent of the global lithium supply to meet anticipated demand by 2030.

Presence of harmful chemicals found in water sources across southern Indian capital, study finds
10/03/2025
Research has revealed the urgent need for improved water quality in Bengaluru and other Indian cities.

Critical Mineral Intelligence Centre hosts second conference
28/02/2025
The Critical Minerals Intelligence Centre conference took place at BGS’s headquarters in Keyworth, Nottinghamshire.

Dr Kathryn Goodenough honoured with prestigious award from The Geological Society
27/02/2025
Dr Kathryn Goodenough has been awarded the Coke Medal, which recognises those who have made a significant contribution to science.

Call for new members and Chair to join the NERC facilities steering committees
18/02/2025
New members are needed to join the committees over the next four years.

BGS announces new director of BGS National Geoscience
12/02/2025
BGS announces its new director of BGS National Geoscience.

Artificial intelligence is proving a game changer in tracking the Santorini earthquake swarm
07/02/2025
Scientists are harnessing the power of machine learning to help residents and tourists by detecting thousands of seismic events.

Pioneering tool expanding to analyse agricultural pollution and support water-quality interventions
06/02/2025
An online tool that shows which roads are most likely to cause river pollution is being expanded to incorporate methods to assess pollution from agricultural areas.