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Quake Shake - A New Citizen Earthquake Outreach Programme In Ireland.
Full text link"Quake Shake" transcends its catchy name; it is a captivating and educational earthquake
outreach initiative tailored specifically for the Irish community. The programme is run by DIAS and co-financed by Geological Survey Ireland. Building on the success of the Seismology in Schools programme (SiS), Quake Shake aims to facilitate the operation of affordable seismometers called Raspberry Shakes in schools, homes, and public institutions. The overarching objective is to foster the development of an integrated community of citizen seismologists throughout Ireland. This poster provides a glimpse into the programmes development: to educate people from all walks of life in Ireland when it comes to earthquake awareness about both Irish and Global earthquakes. It illustrates how Quake Shake is actively currently building a community of citizen seismologists across Ireland
Suidiugud Tellaig Temra 'The Establishment of Tara's Dominion'
No full textThis chapter provides a semi-diplomatic edition of extracts from the Yellow Book Lecan's version of the Middle Irish text, Suidiugud Tellaig Temra (STT), together with corresponding translations. The extracts selected are those which best illustrate the thesis of the succeeding essay, namely, that STT presents Ireland as the westernmost successor to the succession of world empires which, as such, presages Christ's eschatological kingdom. The particular conciliation of Orosian and Augustinian historiography on which this depends is further found to be reminiscent of arguments made by Hugh of St Victor and Otto of Freising concerning the Holy Roman Empire
Seismic and Fluid Responses to Aseismic Deformation Prior to a Mw 4.6 Earthquake in the Western Sea of Marmara
Full text linkThe western part of the North Anatolian Fault (NAF) in the Sea of Marmara is characterised by intense seismic and fluid manifestation activities. It also includes a partially creeping section that hosted a slow slip event propagating from East to West over a period lasting mainly from the second semester of 2013 to the first semester of 2014. Using ocean bottom seismometer and piezometer data from the western Sea of Marmara, we determine the spatio-temporal distribution of the microseismicity and study its potential interplay with fluid responses and aseismic deformation.
Between October 2013 and September 2014, 2054 seismic events were detected, of which 1492 were located using NonLinLoc and 217 were finally relocated using hypoDD. The microseismicity is located in five main zones: two zones are to the East of the Tekirdag Basin, two within the Western High (i.e., centre and northeast corner), and one at the limit between the Western High and the Central Basin. The latter cluster includes an event sequence relative to a Mw 4.6 earthquake that occurred on November 27, 2013. In this area, no seismicity is observed between the start of the deployment until mid-November 2013, when a series of foreshocks appeared close to the mainshock hypocentre. The mainshock was then followed by aftershocks, and some events are observed sporadically until the end of the deployment.
In parallel, around 4 days before the mainshock, a decrease in pore pressure is observed in piezometer data collected within a mud volcano to the North of the NAF trace. Vp/Vs ratios, calculated for the events of this sequence, also indicate a potential medium change prior to the mainshock. Based on these observations, the general timing of the slow slip event in this area, and Coulomb static stress transfer models, we propose that the slow slip event triggered both the preparatory phase preceding the Mw 4.6 mainshock, and a short-term dilatancy process seen by the piezometer and visible in the Vp/Vs ratios. These results suggest that complex interactions between seismic and aseismic deformations take place along the western part of the NAF in the Sea of Marmara, involving potential fluid responses
3D_DIG_Temp_and_RMS_Model_EChambers2024.nc
No full textREAD ME File For '3D_DIG_Temp_and_RMS_Model_EChambers2024_INTERPOLATED.nc'
Dataset DOI:
ReadMe Author: Emma L. Chambers, Dublin Institute for advanced Studies, ORCID: https://orcid.org/0000-0001-6969-2920
This dataset supports the publication:
AUTHORS: Emma L. Chambers*, Javier Fullea, Duygu Kiyan, Sergei Lebedev, Christopher J. Bean, Pat Meere, J. Stephen Daly, Nicola Willmot Noller, Robert Raine, Sarah Blake, Brian M. O’Reilly
TITLE: A new 3D temperature model for Ireland from joint geophysical-petrological inversion of seismic, surface heat flow and petrophysical data
JOURNAL: Geophysical Journal International
PAPER DOI IF KNOWN:
PREPRINT: EarthArXiv
PREPRINT DOI: https://doi.org/10.31223/X5RX3P
This dataset contains:
"3D_DIG_Temp_and_RMS_Model_EChambers2024_INTERPOLATED.nc" which has the final best temperature model and associated uncertainty. Also included are latitude, longitude and depth coordinate variables in both WGS84 and ITM coordinates. The model has been interpolated to 0.025 degree spacing laterally from an original 0.2 degree spacing. See dataset without INTERPOLATED for actual final model.
This file is in NetCDF format. NetCDF files can be opened in most data analysis environments. For example in MATLAB use the netcdf.open command or in python xr.open_dataset(dataset.nc).
Date of data collection:
10/09/2024
Information about geographic location of data collection:
Dataset covers the Republic of Ireland and Northern Ireland in both WGS84 (latitude and longitude, EPSG:4326) and ITM coordinates (latITM and lonITM, EPSG:2157).
Licence:
CC BY-SA 4.0
Related projects and datasets:
3D_DIG_Moho_and_LAB_Model_EChambers2024.nc
3D_DIG_Moho_and_LAB_Model_EChambers2024_INTERPOLATED.nc
3D_DIG_Temp_and_RMS_Model_EChambers2024.n
Anisotropic Seismic Structure of the Northern East African Rift System and Red Sea from Surface Waves
Full text linkContinental rifting is a fundamental process of plate tectonics that has been shaping our planet for billions of years. The northern East African Rift system, including the Gulf of Aden and the Red Sea, presents an excellent opportunity to study this process in locations sub -aerially prior to continental break-up, through to full seafloor spreading. We present results from anisotropic surface wave imaging of the region’s crust and uppermost mantle. Anisotropic structures provide additional information about the form of structures at depth and deformation in the region. We find low seismic velocities within the Main Ethiopian Rift (MER), the Red Sea and Gulf of Aden that likely represent melt emplaced in the crust and uppermost mantle. Radial anisotropy, defined as a difference in wave speed of vertically versus horizontally polarized seismic waves, is observed across the region but is strongest within the rift. The strength of radial anisotropy in the MER suggests that horizontally layered melt intrusions are the dominant mode of melt storage in the mid to lower crust. Azimuthal anisotropy, defined as a variation in seismic wave speed as a function of direction, shows complex patterns that are likely related to ancient structures away from the rift, and structures related to extension and melt emplacement within the rift. Taken together, our results suggest melt has played an important role in shaping the crustal structure within the rift and may have also shaped the ancient pre-rift crustal structure
Tuairisc Bhliantúil 2023 Institiúid Ard-Léinn Bhaile Átha Cliath.
Full text linkCommunications of the Dublin Institute for Advanced Studie
