Coastal Erosion and Increased Tidal Flooding Llyn Peninsula, Gwynedd
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Clare Burgess, Sarah Davies, Louise Barker Aberystwyth Promenade, Ceredigion, January 2014 Increased magnitude & intensity storm waves and extreme wind storms Ynyslas, Ceredigion Coastal habitats and infrastructure affected by sea level rise (SLR) – 0.26-0.98m Illauntannig, Co. Kerry Increased surge levels (2.1 – 9 metres) Great Castle Head promontory fort, Pembrokeshire Increased coastal erosion and increased tidal flooding Llyn Peninsula, Gwynedd Increased frequency and severity of droughts 2017 – 2021 €5.1 Million Project Specific Objective 2: To increase capacity and knowledge of Climate Change adaptation for the Irish Sea and coastal communities 1 Targeting data and knowledge gaps to raise awareness of heritage in these remote coastal locations. Discovering, assessing, mapping and monitoring heritage on land 2 and beneath the sea and establish new baseline data and recording standards. 3 Reconstructing past environments and weather history CHERISH Project Areas Stackpole Estate, Pembrokeshire Historic landscapes Bardsey Island, Gwynedd Island environments Abersoch, Gwynedd: Ship wreck, peat deposit and ancient animal footprints Intertidal and sea zone Flimston Bay Camp, Pembrokeshire Iron Age forts Clonmines, Bannow Bay, Wexford Medieval settlements Rosslare Fort, Wexford Harbour 19th century remains Aerial photography for joint nation baseline survey and reconnaisance Caerfai Fort, Pembrokeshire To date: baseline survey completed for all Welsh sites; survey programme initiated in Ireland. A total of 28 hrs of aerial survey and 2944 high-res images Airborne Laser Scanning (LiDAR) To date: LiDAR commissioned for 6 Welsh islands – manipulating Ramsey Island imagery reveals archaeological features. UAV/Drone survey and photogrammetry Glasscarrig motte, Co. Wexford - Drone imagery used to develop 3D models Terrestrial Laser Scanning Laser scanning of the scheduled medieval church, Puffin Island (Anglesey) provides millimetre accurate data. Maritime survey SS Lennox, South Saltee Island High resolution multi-beam mapping reveals detailed seabed topography and shipwrecks. To date: 170km² of seabed has been surveyed Palaeoenvironments X-rays reveal sand / storm layers, here – c. 4,000 years Geochronology State of the art luminescence dating for palaeoenvironments and archaeology Weather Histories Newgale “The wind blew with such unprecedented violence that the shores of South Wales were completely denuded of sand… the seashore took on the appearance of a forest grove, cut down at the Pembroke County Guardian and time of the Flood…The tempest raged so fiercely that congereels and many other fish were driven Cardigan Reporter, 23rd Dec up on the high rocks...” 1910 Giraldus Cambrensis on the winter of 1171/2 Dunbeg, Co. Kerry Charting rates of erosion https://sketchfab.com/discoveryprogramme/collections/cherish Dinas Dinlle, Gwynedd • 135cm core, peat to 108cm • Rich in pollen and macrofossils • 2,770 +/- 30 14C yrs BP (2,950 – 2,785 cal yrs BP) at 116cm depth – Late Bronze Age Raising Awareness Professional Engagement: CHERISH seminar held in Llandudno, May 2018 ‘My “like” finger is worn out from following all the brilliant tweeting out of @CHERISHproj’s #climateheritage Seminar 2018.’ Meeting Communities • 6500 people engaged (face to face) so far • 42 CHERISH talks and exhibitions www.cherishproject.eu • 776 Facebook Followers • 276,214 Post-reaches on Facebook • 472 Twitter followers • 273,165 Tweet impressions Diolch / Thank you https://www.youtube.com/watch?v=ep-_4nx-5Ro&t=9s.