{"id":63026,"date":"2020-11-30T17:01:14","date_gmt":"2020-11-30T17:01:14","guid":{"rendered":"https:\/\/www.bgs.ac.uk\/?p=63026"},"modified":"2022-08-18T13:00:00","modified_gmt":"2022-08-18T13:00:00","slug":"developing-new-seismic-hazard-maps-for-the-uk","status":"publish","type":"post","link":"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/","title":{"rendered":"Developing new seismic hazard maps for the UK"},"content":{"rendered":"\n
\n

Around 200 to 300 earthquakes are detected and located in the UK every year. Most of these are relatively small (with a local magnitude<\/a> (ML) of less than 3.0) and are not felt by people. Larger earthquakes that are more noticeable happen less frequently \u2013 we get around 3 earthquakes between 3.0 and 3.9 ML each year. Earthquakes that may cause minor damage occur less than once a year with events the size of the 2008 Market Rasen earthquake<\/a> (5.2 ML) happening roughly every 38 years.<\/p>\n\n\n

\"Seismic<\/a>
\n\t\t\t\t\t
\n\t\t\t\t\t\t\"Information\n\t\t\t\t\t<\/div>\n\t\t\t\t\t

Seismic hazard map: peak ground acceleration (PGA) on rock for a 475 year return period. BGS \u00a9 UKRI.<\/p>\n<\/div>\n\t\t\t\t\t

\"Expand<\/a><\/div>\n\t\t\t\t<\/figcaption><\/figure>\n\n\n

Historical observations dating back several centuries confirm that damaging earthquakes in the UK are relatively rare but that they do occur. For this reason, it is important to understand and quantify the hazard they pose to the built environment. The last hazard maps for the UK were published in 2007. Over the last couple of years, a small team at BGS have been working on revising these using larger data sets and some new tools and methods in order to update the advice given to engineers about designing structures for earthquake resistance in the UK. <\/p>\n\n\n\n

Seismic hazard is computed using a model that consists of two parts: one that characterises earthquake occurrence (where they occur and their frequency of occurrence, sometimes referred to as the seismic source characterisation model) and another that describes the ground shaking that may result from potential future earthquakes (the ground motion characterisation component). The model is based on historical and instrumental observations of earthquakes and their effects, and information and data relating to the tectonics and geological structure of the region being considered.<\/p>\n\n\n\n

The modelling must also try to capture the uncertainty relating to both the natural randomness of the earthquake process (the aleatory variability<\/a>) and to limited data and knowledge about different aspects of earthquakes and their effects (the epistemic uncertainty<\/a>).  This is a particular challenge in low seismicity regions like the UK where we only have limited data from the larger earthquakes that may be of engineering significance.  This includes instrumental recordings of the ground shaking caused by such earthquakes (often referred to as strong motion data). Although the BGS seismic network is now well-equipped to record such data, these earthquakes just don\u2019t happen very often so our dataset is relatively small.<\/p>\n\n\n\t\t\t\t

\n\t\t\t\t\t
\"earthquake<\/a>
\n\t\t\t\t\t
\n\t\t\t\t\t\t\"Information\n\t\t\t\t\t<\/div>\n\t\t\t\t\t

An example of some of the damage caused by the 2007 earthquake in Folkestone. BGS \u00a9 UKRI.<\/p>\n<\/div>\n\t\t\t\t\t

\"Expand<\/a><\/div>\n\t\t\t\t<\/figcaption><\/figure><\/div>\t\t\t\t<\/div>\n\t\t\t\t\n\n\n

While earthquake activity in the UK is generally understood to result from the reactivation of pre-existing faults by present-day deformation, the observed distribution of seismicity is not clearly understood yet. The duration of the earthquake catalogue is relatively short (a few hundreds of years) compared to the timescale over which seismotectonic processes are happening so only tells part of the story and may not contain a record of the largest earthquake that could occur. Furthermore, no earthquake in the UK in either the historical (pre-1970) or instrumental (1970-present) periods has ever produced unambiguous evidence of surface rupture. When an earthquake does occur, typical fault rupture dimensions (the area of the fault that breaks) for the largest recorded British earthquakes are around 1-2 km. Compare this with the rupture associated with the largest global earthquakes that can be hundreds of kilometres long. As a result, it is difficult to associate earthquakes with specific faults, particularly at depth, where the distribution and orientation of these structures is unclear. Conversely, many of the earthquakes we observe might actually be associated with unmapped faults whose size and orientation are so far unknown.<\/p>\n\n\n\n

The model used to compute the hazard must therefore try to account for the fact that although we know some things, there is a lot that we do not know and that there is a great deal more to be understood through further observation and research.<\/p>\n\n\n\n

The new seismic hazard maps are given for three ground motion measures, which are used by engineers: peak ground acceleration (PGA) and spectral acceleration (SA) at 0.2 s and 1.0 s (assuming five per cent damping).  PGA tells us about the acceleration of the ground as a result of an earthquake while SA gives an approximation of what might be experienced by a building. You can find a detailed explanation of PGA, SA and damping here<\/a>.<\/p>\n\n\n\n

The maps have been computed for four return periods: 95, 475, 1100 and 2475 years. These return periods correspond to probabilities of approximately 41 per cent, 10 per cent, 5 per cent and 2 per cent, respectively, of exceeding a particular level of ground motion in a 50-year period (the assumed typical service life for a building). For example, for a return period of 475 years, the PGA hazard for the Brecon Beacons in south Wales is between 0.04 g and 0.06 g. In any one year, this means that there is a 0.002 per cent probability (this is just the reciprocal of 475 years) of a PGA higher than 0.04 g to 0.06 g happening. This can also be described as there being a 10 per cent chance of a particular location experiencing a PGA higher than 0.04 g to 0.06 g in any 50-year time period. The important thing to remember is the longer the return period, the lower the probability of the PGA or SA on the maps occurring.<\/p>\n\n\n\n

The geological conditions in a particular location will influence ground shaking from an earthquake. Generally speaking, softer materials like alluvial deposits may amplify ground shaking with respect to harder materials like sandstone or granite. In the seismic hazard computations for the new maps, we have assumed that at every point, there are rock conditions. This is a significant but necessary simplification for the modelling but engineers can make adjustments if needed.<\/p>\n\n\n\n

The maps confirm that seismic hazard is generally low in the UK but that the hazard is slightly higher in areas like Wales and north central England. This largely reflects the higher rates of historical earthquake activity in these regions. While seismic hazard in the UK is low in global terms and may not require seismic design to be integrated into the design of every structure, maps like these can help engineers to determine what the general level of hazard is and decide whether they need to undertake further work to inform the design of a structure.<\/p>\n\n\n\n

You can read the full report, download the maps and the data used to make them<\/a> on the BGS Earthquakes website. <\/p>\n\n\n\n

This work has been undertaken with support from the Institution of Civil Engineers Research and Development Enabling Fund, other seismologists and engineers based in the UK, and oversight from the British Standard Institution (BSI) sub-committee B\/525\/8 for Eurocode 8 (EC8): Earthquake resistant design of structures. <\/p>\n\n\n\t\t

About the author<\/h2>\n\t\t
\n\t\t\t
\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\"Susanne\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t\t\t\t
Dr Susanne Sargeant<\/h5>\n\t\t\t\t\t\t

RP3 manager, disaster and development geoscientist<\/p>\n\t\t\t\t\t\t

BGS Edinburgh<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t\tFind out more<\/a>\n\t\t<\/div>\n\t\t\t\n\n\t\t\t
\n\t\t\t\t
Relative topics<\/h5>\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\tearthquakes<\/a>\n\t\t\t\t\t\t\t\t\t\t\tgeohazards<\/a>\n\t\t\t\t\t\t\t\t\t\t\tseismology<\/a>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<\/div><\/div><\/div><\/section>\n\n\n\t\t\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Related news<\/h2>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t
\t\t\t\t\t\t\t
\n\t\t\n\t\t\"Distribution\t<\/a>\n\t\t
\n\t\t
\n\t\t\t
BGS news<\/div>\n\t\t\t

UK legacy geothermal catalogue released in digital format for the first time<\/a><\/h4>\n\t\t\t

18\/04\/2024<\/p>\t\t\t\t\t\t\t

BGS has released the first digital version of the UK legacy geothermal catalogue of subsurface temperature measurements, rock thermal conductivity measurements and heat flow calculations.<\/p>\n\t\t\t\t\t<\/div>\n\t\tShow more<\/a>\n\t<\/div>\n<\/div>\n

\n\t\t\n\t\t\"Fallow\t<\/a>\n\t\t
\n\t\t
\n\t\t\t
Research highlight<\/div>\n\t\t\t

New research supports conservation of fallow deer across Europe<\/a><\/h4>\n\t\t\t

16\/04\/2024<\/p>\t\t\t\t\t\t\t

New research has combined zooarchaeology and ancient and modern biomolecular datasets to reveal new understandings into the history and projections of fallow deer. <\/p>\n\t\t\t\t\t<\/div>\n\t\tShow more<\/a>\n\t<\/div>\n<\/div>\n

\n\t\t\n\t\t\"Representatives\t<\/a>\n\t\t
\n\t\t
\n\t\t\t
BGS news<\/div>\n\t\t\t

BGS signs memorandum of understanding with Servi\u00e7o Geol\u00f3gico do Brasil<\/a><\/h4>\n\t\t\t

10\/04\/2024<\/p>\t\t\t\t\t\t\t

The partnership will advance the two organisations\u2019 shared interests in mineral research and geoscience to help benefit society. <\/p>\n\t\t\t\t\t<\/div>\n\t\tShow more<\/a>\n\t<\/div>\n<\/div>\n

\n\t\t\n\t\t\"BGS\t<\/a>\n\t\t
\n\t\t
\n\t\t\t
BGS news<\/div>\n\t\t\t

World Mineral Production 2018 to 2022 is now available<\/a><\/h4>\n\t\t\t

09\/04\/2024<\/p>\t\t\t\t\t\t\t

The latest edition of World Mineral Production has been released.<\/p>\n\t\t\t\t\t<\/div>\n\t\tShow more<\/a>\n\t<\/div>\n<\/div>\n

\n\t\t\n\t\t\"Dr\t<\/a>\n\t\t
\n\t\t
\n\t\t\t
BGS news<\/div>\n\t\t\t

New underground observatory open for research<\/a><\/h4>\n\t\t\t

09\/04\/2024<\/p>\t\t\t\t\t\t\t

Construction has been completed on the Cheshire Observatory and the facility is now open for research activities.<\/p>\n\t\t\t\t\t<\/div>\n\t\tShow more<\/a>\n\t<\/div>\n<\/div>\n

\n\t\t\n\t\t\"IGRF-13\t<\/a>\n\t\t
\n\t\t
\n\t\t\t
BGS news<\/div>\n\t\t\t

BGS leads update to maps of the Earth\u2019s magnetic field<\/a><\/h4>\n\t\t\t

04\/04\/2024<\/p>\t\t\t\t\t\t\t

The International Geomagnetic Reference Field, used for navigation on mobile phones and in space, is updated every five years. <\/p>\n\t\t\t\t\t<\/div>\n\t\tShow more<\/a>\n\t<\/div>\n<\/div>\n

\n\t\t\n\t\t\"River\t<\/a>\n\t\t
\n\t\t
\n\t\t\t
BGS news<\/div>\n\t\t\t

UK bidding to host the International Geological Congress 2028<\/a><\/h4>\n\t\t\t

18\/03\/2024<\/p>\t\t\t\t\t\t\t

BGS has partnered with the Geological Society of London and the Scottish Geology Trust to develop a bid to host the 38th International Geological Congress in Glasgow in 2028. <\/p>\n\t\t\t\t\t<\/div>\n\t\tShow more<\/a>\n\t<\/div>\n<\/div>\n

\n\t\t\n\t\t\"BGS\t<\/a>\n\t\t
\n\t\t
\n\t\t\t
BGS news<\/div>\n\t\t\t

BGS to lead a new research project on microplastic occurrence in springs<\/a><\/h4>\n\t\t\t

06\/03\/2024<\/p>\t\t\t\t\t\t\t

BGS has been awarded a two-year research project to undertake the first assessment of microplastic occurrence in springs in the UK. <\/p>\n\t\t\t\t\t<\/div>\n\t\tShow more<\/a>\n\t<\/div>\n<\/div>\n

\n\t\t\n\t\t\"Breaking\t<\/a>\n\t\t
\n\t\t
\n\t\t\t
BGS news<\/div>\n\t\t\t

Local MP helps BGS launch a \u2018living laboratory\u2019\u00a0\u00a0<\/a><\/h4>\n\t\t\t

05\/03\/2024<\/p>\t\t\t\t\t\t\t

BGS is implementing a low-carbon heating system to help meet its net zero targets and provide data to the public. <\/p>\n\t\t\t\t\t<\/div>\n\t\tShow more<\/a>\n\t<\/div>\n<\/div>\n

\n\t\t\n\t\t\"IODP\t<\/a>\n\t\t
\n\t\t
\n\t\t\t
BGS news<\/div>\n\t\t\t

Scientists produce first record of environmental data off coast of Hawai\u2019i<\/a><\/h4>\n\t\t\t

01\/03\/2024<\/p>\t\t\t\t\t\t\t

An international team of researchers, including BGS geoscientists, have succeeded in acquiring a continuous record of environmental data using fossilised coral from Hawai\u2019i.<\/p>\n\t\t\t\t\t<\/div>\n\t\tShow more<\/a>\n\t<\/div>\n<\/div>\n

\n\t\t\n\t\t\"A\t<\/a>\n\t\t
\n\t\t
\n\t\t\t
BGS news<\/div>\n\t\t\t

New BGS Board member<\/a><\/h4>\n\t\t\t

01\/03\/2024<\/p>\t\t\t\t\t\t\t

New non-executive director appointed to the BGS Board.<\/p>\n\t\t\t\t\t<\/div>\n\t\tShow more<\/a>\n\t<\/div>\n<\/div>\n

\n\t\t\n\t\t\"Debris\t<\/a>\n\t\t
\n\t\t
\n\t\t\t
BGS news<\/div>\n\t\t\t

BGS data product licence fees to rise<\/a><\/h4>\n\t\t\t

01\/03\/2024<\/p>\t\t\t\t\t\t\t

New direct licence fees to be introduced from 1 April 2024.<\/p>\n\t\t\t\t\t<\/div>\n\t\tShow more<\/a>\n\t<\/div>\n<\/div>\n<\/div>\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\t\t","protected":false},"excerpt":{"rendered":"

Understanding and quantifying the hazard earthquakes pose to the built environment in the UK.<\/p>\n","protected":false},"author":2,"featured_media":63048,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"6223,9089,10235,8160,34248,32954","_relevanssi_noindex_reason":"","footnotes":""},"categories":[58],"tags":[1270,1313,1271],"purpose":[],"challenge":[],"acf":[],"yoast_head":"\nDeveloping new seismic hazard maps for the UK - British Geological Survey<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Developing new seismic hazard maps for the UK - British Geological Survey\" \/>\n<meta property=\"og:description\" content=\"Understanding and quantifying the hazard earthquakes pose to the built environment in the UK.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/\" \/>\n<meta property=\"og:site_name\" content=\"British Geological Survey\" \/>\n<meta property=\"article:published_time\" content=\"2020-11-30T17:01:14+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-08-18T13:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/11\/seismic_hazard_thumbnail.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"640\" \/>\n\t<meta property=\"og:image:height\" content=\"430\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Jon-Paul Orsi\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jon-Paul Orsi\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/\"},\"author\":{\"name\":\"Jon-Paul Orsi\",\"@id\":\"https:\/\/www.bgs.ac.uk\/#\/schema\/person\/a05df0c48b1bea8344ac6473a275c926\"},\"headline\":\"Developing new seismic hazard maps for the UK\",\"datePublished\":\"2020-11-30T17:01:14+00:00\",\"dateModified\":\"2022-08-18T13:00:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/\"},\"wordCount\":1073,\"publisher\":{\"@id\":\"https:\/\/www.bgs.ac.uk\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/11\/seismic_hazard_thumbnail.jpg\",\"keywords\":[\"earthquakes\",\"geohazards\",\"seismology\"],\"articleSection\":[\"BGS blogs\"],\"inLanguage\":\"en-GB\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/\",\"url\":\"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/\",\"name\":\"Developing new seismic hazard maps for the UK - British Geological Survey\",\"isPartOf\":{\"@id\":\"https:\/\/www.bgs.ac.uk\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/11\/seismic_hazard_thumbnail.jpg\",\"datePublished\":\"2020-11-30T17:01:14+00:00\",\"dateModified\":\"2022-08-18T13:00:00+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/#primaryimage\",\"url\":\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/11\/seismic_hazard_thumbnail.jpg\",\"contentUrl\":\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/11\/seismic_hazard_thumbnail.jpg\",\"width\":640,\"height\":430,\"caption\":\"2007 Folkestone earthquake\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.bgs.ac.uk\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Developing new seismic hazard maps for the UK\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.bgs.ac.uk\/#website\",\"url\":\"https:\/\/www.bgs.ac.uk\/\",\"name\":\"British Geological Survey\",\"description\":\"World-leading geological solutions\",\"publisher\":{\"@id\":\"https:\/\/www.bgs.ac.uk\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.bgs.ac.uk\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.bgs.ac.uk\/#organization\",\"name\":\"British Geological Survey\",\"url\":\"https:\/\/www.bgs.ac.uk\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\/\/www.bgs.ac.uk\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/03\/BGS-logo-large.png\",\"contentUrl\":\"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/03\/BGS-logo-large.png\",\"width\":250,\"height\":104,\"caption\":\"British Geological Survey\"},\"image\":{\"@id\":\"https:\/\/www.bgs.ac.uk\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.bgs.ac.uk\/#\/schema\/person\/a05df0c48b1bea8344ac6473a275c926\",\"name\":\"Jon-Paul Orsi\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\/\/www.bgs.ac.uk\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/b3c3a6428f190fb4c82bc6e3fab2b924?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/b3c3a6428f190fb4c82bc6e3fab2b924?s=96&d=mm&r=g\",\"caption\":\"Jon-Paul Orsi\"},\"url\":\"https:\/\/www.bgs.ac.uk\/author\/jporsi\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Developing new seismic hazard maps for the UK - British Geological Survey","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/","og_locale":"en_GB","og_type":"article","og_title":"Developing new seismic hazard maps for the UK - British Geological Survey","og_description":"Understanding and quantifying the hazard earthquakes pose to the built environment in the UK.","og_url":"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/","og_site_name":"British Geological Survey","article_published_time":"2020-11-30T17:01:14+00:00","article_modified_time":"2022-08-18T13:00:00+00:00","og_image":[{"width":640,"height":430,"url":"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/11\/seismic_hazard_thumbnail.jpg","type":"image\/jpeg"}],"author":"Jon-Paul Orsi","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Jon-Paul Orsi","Estimated reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/#article","isPartOf":{"@id":"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/"},"author":{"name":"Jon-Paul Orsi","@id":"https:\/\/www.bgs.ac.uk\/#\/schema\/person\/a05df0c48b1bea8344ac6473a275c926"},"headline":"Developing new seismic hazard maps for the UK","datePublished":"2020-11-30T17:01:14+00:00","dateModified":"2022-08-18T13:00:00+00:00","mainEntityOfPage":{"@id":"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/"},"wordCount":1073,"publisher":{"@id":"https:\/\/www.bgs.ac.uk\/#organization"},"image":{"@id":"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/#primaryimage"},"thumbnailUrl":"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/11\/seismic_hazard_thumbnail.jpg","keywords":["earthquakes","geohazards","seismology"],"articleSection":["BGS blogs"],"inLanguage":"en-GB"},{"@type":"WebPage","@id":"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/","url":"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/","name":"Developing new seismic hazard maps for the UK - British Geological Survey","isPartOf":{"@id":"https:\/\/www.bgs.ac.uk\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/#primaryimage"},"image":{"@id":"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/#primaryimage"},"thumbnailUrl":"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/11\/seismic_hazard_thumbnail.jpg","datePublished":"2020-11-30T17:01:14+00:00","dateModified":"2022-08-18T13:00:00+00:00","breadcrumb":{"@id":"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/#breadcrumb"},"inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/"]}]},{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/#primaryimage","url":"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/11\/seismic_hazard_thumbnail.jpg","contentUrl":"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/11\/seismic_hazard_thumbnail.jpg","width":640,"height":430,"caption":"2007 Folkestone earthquake"},{"@type":"BreadcrumbList","@id":"https:\/\/www.bgs.ac.uk\/news\/developing-new-seismic-hazard-maps-for-the-uk\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.bgs.ac.uk\/"},{"@type":"ListItem","position":2,"name":"Developing new seismic hazard maps for the UK"}]},{"@type":"WebSite","@id":"https:\/\/www.bgs.ac.uk\/#website","url":"https:\/\/www.bgs.ac.uk\/","name":"British Geological Survey","description":"World-leading geological solutions","publisher":{"@id":"https:\/\/www.bgs.ac.uk\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.bgs.ac.uk\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-GB"},{"@type":"Organization","@id":"https:\/\/www.bgs.ac.uk\/#organization","name":"British Geological Survey","url":"https:\/\/www.bgs.ac.uk\/","logo":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/www.bgs.ac.uk\/#\/schema\/logo\/image\/","url":"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/03\/BGS-logo-large.png","contentUrl":"https:\/\/www.bgs.ac.uk\/wp-content\/uploads\/2020\/03\/BGS-logo-large.png","width":250,"height":104,"caption":"British Geological Survey"},"image":{"@id":"https:\/\/www.bgs.ac.uk\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/www.bgs.ac.uk\/#\/schema\/person\/a05df0c48b1bea8344ac6473a275c926","name":"Jon-Paul Orsi","image":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/www.bgs.ac.uk\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/b3c3a6428f190fb4c82bc6e3fab2b924?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/b3c3a6428f190fb4c82bc6e3fab2b924?s=96&d=mm&r=g","caption":"Jon-Paul Orsi"},"url":"https:\/\/www.bgs.ac.uk\/author\/jporsi\/"}]}},"_links":{"self":[{"href":"https:\/\/www.bgs.ac.uk\/wp-json\/wp\/v2\/posts\/63026"}],"collection":[{"href":"https:\/\/www.bgs.ac.uk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bgs.ac.uk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bgs.ac.uk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bgs.ac.uk\/wp-json\/wp\/v2\/comments?post=63026"}],"version-history":[{"count":18,"href":"https:\/\/www.bgs.ac.uk\/wp-json\/wp\/v2\/posts\/63026\/revisions"}],"predecessor-version":[{"id":88601,"href":"https:\/\/www.bgs.ac.uk\/wp-json\/wp\/v2\/posts\/63026\/revisions\/88601"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bgs.ac.uk\/wp-json\/wp\/v2\/media\/63048"}],"wp:attachment":[{"href":"https:\/\/www.bgs.ac.uk\/wp-json\/wp\/v2\/media?parent=63026"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bgs.ac.uk\/wp-json\/wp\/v2\/categories?post=63026"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bgs.ac.uk\/wp-json\/wp\/v2\/tags?post=63026"},{"taxonomy":"purpose","embeddable":true,"href":"https:\/\/www.bgs.ac.uk\/wp-json\/wp\/v2\/purpose?post=63026"},{"taxonomy":"challenge","embeddable":true,"href":"https:\/\/www.bgs.ac.uk\/wp-json\/wp\/v2\/challenge?post=63026"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}