{
    "@context": "https://schema.org",
    "@type": "Dataset",
    "@id": "http://portal.medin.org.uk/portal/json-ld/NRW_DS114691.jsonld",
    "identifier": "NRW_DS114691",
    "url": "http://portal.medin.org.uk/portal/?details&tpc=NRW_DS114691",
    "name": "Merthyr Mawr Warren: Potential for Dune Reactivation",
    "description": "This dataset is a compilation of work carried out to assess the geomorphological feasibility of sand dune reactivation at Merthyr Mawr Warren, based on a review of background environmental data, air photographs LiDAR data, a site visit and laboratory analysis of a limited number of sediment samples. \r\n\r\nThe Merthyr Mawr dunefield is a sediment-starved system which is undergoing re-distribution of sandy sediment from the north-western part to the south-eastern part of the system. Photographic evidence indicates that bare sand and active dunes covered a large part of the area between the late 19th century and the late 1960\u2019s, after which time the dunes became progressively stabilized by vegetation. The period of high dune mobility corresponded with a period of coastal erosion. No long-term wind or wave data are available for the area, but it is hypothesized that coastal erosion, frontal dune blowout development and inland dune mobility were encouraged by high average wind and wave energy conditions, and perhaps a higher frequency of severe storms. Conversely, the period of inland dune stability between the 1970\u2019s and the present day was associated with beach accretion and foredune progradation. It is hypothesized that these changes were driven by lower average wind / wave energy conditions and lower frequency of severe storms. \r\n\r\nBare sand and active parabolic dunes have only been maintained in areas where there is high visitor pressure or other anthropogenic disturbance. The purpose of this data capture was to help inform decisions that may result in potential re-mobilisation work, including impact on existing habitats and stakeholder interests.",
    "includedInDataCatalog": {
        "@id": "http://portal.medin.org.uk/portal/json-ld/catalog.jsonld"
    },
    "conditionsOfAccess": [
        "access: The following data is considered OS derived data and is therefore jointly owned by NRW and the Ordnance Survey. NRW may release, publish or disseminate this data freely; providing recipients are made aware of use restrictions (See general use restrictions).",
        "access: no limitations",
        "use: \u00a9 CNC/NRW and \u00a9 Crown copyright, 2011. All rights reserved. Natural Resources Wales, AC0000849444 Third parties seeking to re-use this data require a Licence issued by NRW. It allows re-use, reproduction and dissemination in any format or medium but only for non-commercial purposes, according to the terms and conditions of the Licence. Those seeking commercial re-use require a commercial licence available from the OS. Those seeking commercial re-use for OS derived data require a commercial licence available from the OS."
    ],
    "temporalCoverage": "2011-11-07",
    "keywords": [
        {
            "@type": "DefinedTerm",
            "identifier": "http://inspire.ec.europa.eu/theme/lc",
            "name": "Land cover"
        },
        {
            "@type": "DefinedTerm",
            "name": "sand dune management"
        },
        {
            "@type": "DefinedTerm",
            "name": "Merthyr Mawr Warren"
        },
        {
            "@type": "DefinedTerm",
            "name": "sand dunes (sand-dunes) (dunes) (see also specifically named dunes)"
        },
        {
            "@type": "DefinedTerm",
            "name": "coastal geomorphology"
        },
        {
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            "identifier": "http://vocab.nerc.ac.uk/collection/P02/current/COGE/",
            "inDefinedTermSet": "http://vocab.nerc.ac.uk/collection/P02/current/",
            "termCode": "COGE",
            "name": "Coastal geomorphology"
        }
    ],
    "spatialCoverage": {
        "@type": "Place",
        "geo": {
            "@type": "GeoShape",
            "box": "51.27237833 -3.96312 51.72738793 -2.82136364"
        },
        "additionalProperty": [
            {
                "@type": "PropertyValue",
                "propertyID": "http://www.opengis.net/def/crs/EPSG/0/27700",
                "value": "National Grid of Great Britain - urn:ogc:def:crs:EPSG::27700"
            }
        ]
    },
    "author": [
        {
            "@type": "Organization",
            "name": "Natural Resources Wales (NRW)",
            "description": "owner",
            "email": "enquiries@naturalresourceswales.gov.uk",
            "address": {
                "@type": "PostalAddress",
                "streetAddress": "Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales"
            }
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    "maintainer": [
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            "name": "Natural Resources Wales (NRW)",
            "description": "custodian",
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    "producer": [
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            "name": "Kenneth Pye Associates Ltd",
            "description": "originator",
            "email": "info@kpal.co.uk",
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                "@type": "PostalAddress",
                "streetAddress": "Kenneth Pye Associates Ltd, Crowthorne Enterprise Centre, Old Wokingham Road, Crowthorne, Berkshire, RG45 6AW, UK"
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        "url": "https://portal.medin.org.uk/portal/",
        "name": "Marine Environmental Data and Information Network (MEDIN)",
        "description": "The MEDIN portal contains information about 19493 marine datasets from over 600 UK organisations. Metadata are an enduring resource and contact details are publicly available for a long time. \r\n\t\tPlease contact us (enquiries@medin.org.uk) if you find your contact details on the MEDIN portal and do not consent to this. \r\n\t\tYou can now use our GitHub repository to report issues or access related documents. Metadata records are updated daily and were last updated 2026-04-19. Record deletion takes place weekly and the latest occurred 2026-04-12."
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}