dataset · United Kingdom
The 2026 seismic hazard maps for the United Kingdom, the Channel Islands, and the offshore Exclusive Economic Zone
he 2026 offshore and onshore seismic hazard maps cover the UK, the Channel Islands, and the UK offshore Exclusive Economic Zone EEZ (UK commercial waters). The data comprises a grid of 4663 points that are spaced 0.125° in latitude and 0.25° in longitude, and is developed for an additional ground motion parameter, spectral acceleration at 0.15 s. Therefore, the 2026 hazard maps are for four ground motion parameters, i.e. peak ground acceleration (PGA), spectral acceleration at 0.15 s (SA0.15 s),
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Licence: ["The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in an
Evidence quality: 27.7
Listed in data.gov.uk public catalogue API on 2026-10-16; relevance/value screened (haiku).
Metadata checked: 2026-10-14T13:20:00.000Z
What's in it
- Data offered docs-verified
- seismic hazard maps (peak ground acceleration, PGA) · spectral acceleration SA0.15 s · spectral acceleration SA0.2 s · spectral acceleration SA1.0 s · return periods 95, 475, 1100, 2475 and 5000 years (5% damping, rock conditions)
- Coverage docs-verified
- UK, Channel Islands and UK offshore Exclusive Economic Zone (EEZ)
- Resolution docs-verified
- Grid of 4663 points spaced 0.125° in latitude and 0.25° in longitude
- Update frequency docs-verified
- Not applicable per publisher metadata (edition dated 2026; page last updated 6 August 2026)
- Access docs-verified
- Public listing on data.gov.uk with no licence set on the listing; reuse restricted. Copyright vested in NERC; no reproduction or transmission without prior permission of the copyright holder (BGS IPR Manager).
Useful for
- Use cases llm-inferred
- Seismic design input for UK structures using SA0.15 s, aligned with Eurocode 8 and the UK National Annex/PD6698 approach · Site-screening seismic hazard (PGA or SA) at 475- and 2475-year return periods for infrastructure and civils assessments · Regional seismic context for offshore UK EEZ marine and energy infrastructure assessments
- Audience llm-inferred
- structural engineers · geotechnical engineers · civils engineers · engineering geologists
Limitations
- Constraints llm-inferred
- Coarse grid (0.125° × 0.25°), so site-specific values need interpolation and local checks · Only four ground motion parameters, five return periods, 5% damping and rock conditions; no soil-amplified outputs · Not a live or updated feed; update frequency not applicable · Accuracy not warranted by NERC/BGS; use at the customer's own risk · Reuse requires permission from the copyright holder · Download formats and API access not stated in the listing
Evidence
- https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item192851
- https://www.data.gov.uk/dataset/a2978132-b540-4290-8bd6-f376798fdd1a/the-2026-seismic-hazard-maps-for-the-united-kingdom-the-channel-islands-and-the-offshore-exclus
Check upstream coverage, uncertainty and licence before use. Station observations are not forecasts or design levels.