5 research outputs found
Geochemical fingerprinting of Icelandic silicic Holocene tephra layers
The overall aim of this research project has been to develop a reference dataset of 19 Holocene silicic Icelandic tephra layers sourced from the Torfajökull, Askja, Katla, Öræfajökull and Hekla volcanic systems. The dataset comprises geochemical data (including major, trace and rare earth element data for bulk and glass phases collected by XRF, electron microprobe, ion probe and laser ablation ICP-MS) and physical data (including sedimentary logs, field photographs, distribution maps and GPS localities of reference sections).
Results indicate that Icelandic volcanic systems show unique geochemical signatures which result from the systems proximity to the active rifting zone and the proposed upwelling mantle plume that underlies the island. Within individual volcanic systems, eruptions produce tephra with distinct geochemical characteristics, which allow for the independent confirmation of tephra identity. The identification and discrimination of tephra layers can in some cases be achieved using major element chemistry (e.g. Hekla, H1104 – H5) while other tephra layers can only be discriminated using trace element chemistry (e.g. Torfajökull, Landnám and Gràkolla). Certain tephra layers however show near-identical geochemistry and therefore discrimination is not possible (e.g. Hekla, HA, HB, HC, HM, HN, HX, HY, HZ) without the incorporation of other proxy data.
Icelandic micro-tephra horizons are identified in soil, lacustrine and marine sedimentary sequences and are used for dating and correlation in Quaternary studies. Data collected for this project will facilitate reliable data comparison and tephra identification between proximal and distal localities across the North Atlantic region. The data may also contribute to the debate regarding the formation of silicic rocks within Iceland, particularly with regard to the Hekla central volcano. The geochemical data collected for this thesis shows distinct age-dependant geochemical sub-groups suggesting temporal sub-surface relocation of the Hekla magma source
A scoping review of Deaf awareness programs in Health professional education
Deaf awareness aims to promote understanding about Deaf and hard of hearing people,with the goal of reducing barriers between Deaf and hearing populations; and is particularlypertinent for health professional students as they need to learn to communicate effectivelywith a range of population groups. This scoping review aims to provide an overview of literatureexamining Deaf awareness programs provided to health professional students duringtheir initial training. We searched four medical and public health databases and registersusing terms related to Deaf awareness. We used the PRISMA-ScR reporting standardschecklist for scoping reviews. We identified 10,198 citations, with 15 studies included in thefinal review. Searches were performed during August to September 2022, and April 2023.Studies were included provided they examined Deaf awareness content or programs withinhealth professional education. Data were extracted by two independent reviewers whoscreened all abstracts using Rayyan software, followed by discussion to achieve knowledgesynthesis and agreement. In all, a total of 15 articles from six countries were identifiedacross health professional student disciplines including pharmacy, nursing, audiology, interprofessionaland medical programs. The review found sparse evidence of research intoDeaf awareness programs delivered to health professional students, with delivery oftensolely to small groups of students, indicating why so few students can access informationabout how to communicate effectively with Deaf and hard of hearing patients during their initialtraining programs. This scoping reviewed showed evidence of promising benefits forhealth professional students undertaking Deaf awareness programs during their undergraduateeducation. The importance of communicating with Deaf and hard of hearing patientsand attaining Deaf cultural competencies for health professional students should be investigatedin future research
Magmatic Memories: : Eldfell, 1973
The authors would like to thank the community of Vest-mannaeyjabær for their support and contributions to thisresearch—particular thanks are given to Ingibergur Óskars-son, Kári Bjarnason, and Hrefna Guðmundsdóttir. Thanksalso to Dr Kirstie Wright, Dr Gethin Thomas, Professor GísliPálsson, Professor Emily Keightley, Dr Rhys Jones, Dr DianaBeljaars, Sian Neilson, Jonas Rae, Anna Clarke, Professor PaulMeara, and Dr Gwen Awbery for their support, discussionsand proofreading throughout the development of this work.Finally, thanks to the reviewers and the editor of this paperwho provided extensive suggestions which have thoroughlybenefitted this final piece of work.Peer reviewe