55,114 research outputs found
Magnetotelluric data from before, during and after the September 2017 magnetic storm at 7 sites in Scotland
Magnetotelluric (MT) time series including the September 2017 magnetic storm at 7 sites in the Scottish Highlands collected by Fiona Simpson (University of Southampton) and Karsten Bahr (University of Göttingen) using Göttingen RAP dataloggers, Magson fluxgate magnetometers and Filloux-type electrodes.
Data acquisition methodology is described in F. Simpson and K. Bahr, 2005. Practical Magnetotellurics, Cambridge University Press, London pp. 254, 2005, ISBN: 9781108462556, DOI: 10.1017/CBO9780511614095
This dataset is described in:
F. Simpson and K. Bahr, 2020a. Nowcasting and validating Earth’s electric field response to extreme space weather events using magnetotelluric data: application to the September 2017 geomagnetic storm and comparison to observed and modelled fields in Scotland, Space Weather, https://doi.org/10.1051/swsc/2020049
F. Simpson and K. Bahr, 2020b. Estimating the electric field response to the Halloween 2003 and September 2017 magnetic storms across Scotland using observed geomagnetic fields, magnetotelluric impedances and perturbation tensors, Journal of Space Weather and Space Climate, https://doi.org/10.1029/2019SW002432</span
Magnetotelluric data for the Halloween 2003 magnetic storm in the vicinity of Uppsala and Eskdalemuir geomagnetic observatories (synthesized using geomagnetic observatory data from INTERMAGNET)
Magnetotelluric data for the Halloween 2003 magnetic storm in the vicinity of Uppsala (UPS), Sweden and Eskdalemuir (ESK), Scotland geomagnetic observatories synthesized from geomagnetic observatory data from INTERMAGNET. The data were generated to facilitate comparison of the ground effects of the Halloween 2003 magnetic storm in Sweden and Scotland. The data demonstrate the greater risk of hazardous storm-time electric fields being generated in southern Sweden compared to central Scotland and are further described in the gold open access paper:
F. Simpson and K. Bahr, 2020a. The role of tectonic-plate thickness and mantle conductance in determining regional vulnerability to extreme space weather events: possible enhancement of magnetic source fields by secondary induction in the asthenosphere. Space Weather, 18(12), [e2020SW002587]. https://doi.org/10.1029/2020SW002587
The synthesis technique that enables electric fields to be estimated from geomagnetic observatory data is described and validated in the following gold open access papers:
F. Simpson and K. Bahr, 2020b. Nowcasting and validating Earth's electric field response to extreme space weather events using magnetotelluric data: application to the September 2017 geomagnetic storm and comparison to observed and modelled fields in Scotland, Space Weather, 18, e2019SW002432, https://doi.org/10.1029/2019SW002432.
F. Simpson and K. Bahr, 2020c. Estimating the electric field response to the Halloween 2003 and September 2017 magnetic storms across Scotland using observed geomagnetic fields, magnetotelluric impedances and perturbation tensors, JSWSC, swsc200019, 10, (48), https://doi.org/10.1051/swsc/2020049.</span
F. E. Simpson of Breckenridge, Tex. at Lake Kemp
F. E. Simpson of Breckenridge, Texas showing his fishing catch at Lake Kemp, Texas.https://mavmatrix.uta.edu/specialcollections_basilclemonsphotograph/4012/thumbnail.jp
Plan 84-85 F L Simpson 1913
Design for the Revd F L Simpson, signed as approved by F Merttens. Examples of architectural plans submitted by clients of Rothley Temple Estates
[Civil Service Commission Notice of Official Efficiency Rating for T. N. Carswell - May 12, 1945]
A U.S. Civil Service form (Standard Form 68) titled "Notice of Official Efficiency Rating" for Thomas N. Carswell, and dated May 12, 1945, and signed by E. F. Simpson, Cap't., F. D. Chmn., Efficiency Rating Committee
Los Simpson y la Biblia I. Los datos
En octubre de 2010 el nº 3848 de La Civiltà Católica publicaba un artículo de F. Ochetta titulado “I «simpson» e la religione” (Los Simpson y la religión) En nuestro país muchos medios de comunicación se hicieron eco de la aparición del trabajo y publicaron titulares como “Bula papal para Homer” o “Bart y Homer son buenos católicos, lo dice la Iglesia”. El artículo quiere mostrar la frecuente referencia a la Biblia, a sus personajes y tradiciones en esta serie a lo largo de sus veinte años de existencia y ofrecer una suerte de “banco de datos” sobre la cuestión que anime a los educadores cristianos a considerar la serie en el marco de su praxis evangelizadora y promete ser el preludio de un artículo que estudie los datos desde la perspectiva de los estudios bíblicos
Miscellaneous tracts on some curious, and very interesting subjects in mechanics, physical-astronomy, and speculative mathematics : wherein, the precession of the equinox, the nutation of the earth's axis, and the motion of the moon in her orbit, are determined
By Thomas Simpson, F. R. S. And Member of the Royal Academy of Sciences at Stockholm
Internal tidal mixing as a control on continental margin ecosystems
We show that a breaking internal tide at a shelf edge is a fundamental control on the structural and functional properties of ecosystems. Contrasts in vertical mixing of nitrate between the shelf and the open ocean correspond with horizontal and vertical changes in phytoplankton communities, with largest cells found in surface waters at the shelf edge. Intense fishing activity is commonly seen at continental shelf edges, targeting spawning fish stocks. We suggest that the internal tide, a globally ubiquitous physical process at steep shelf edge bathymetry, supports shelf edge fisheries by providing large-celled phytoplankton for first-feeding fish larvae. The repeatability of the internal tide removes fish from the need to time spawning with a spring bloom. Also, with large phytoplankton cells dominating particulate organic carbon export, the internal tides could be an important influence on spatial and temporal variability in patterns of global carbon sequestration in deep water and sediments. Citation: Sharples, J., C. M. Moore, A. E. Hickman, P. M. Holligan, J. F. Tweddle, M. R. Palmer, and J. H. Simpson (2009), Internal tidal mixing as a control on continental margin ecosystems, Geophys. Res. Lett., 36, L23603, doi:10.1029/2009GL040683
Data for Envelope Frequency Following Responses to Filtered Word Stimuli
Raw EEG data in .bdf format, collected using a 32-channel ActiveTwo EEG system (BioSemi, the Netherlands). EEG data were measured during presentation of words at an intensity of 70 dB SPL LA eq using ER-2 insert earphones. Words are filtered in different band (0-500 Hz, 0-1000 Hz, 1000-end Hz and 2000-end Hz), with end being 8000 Hz as words were recorded at a sampling rate of 16000 Hz. Stimuli were 3 words presented randomly with an inter-stimulus interval of 1s. Data are published in according with the EPSRC guidelines for data sharing.
Data Supports the paper Vanheusden, F. J., Chesnaye, M. A., Simpson, D. M., & Bell, S. L. (2019). Envelope frequency following responses are stronger for high-pass than low-pass filtered vowels. International Journal of Audiology, 1-9. DOI: 10.1080/14992027.2018.1562243
This dataset, approx 28GB, is available on request via the webform at https://library.soton.ac.uk/datarequest</span
Texas Medical Journal
Monthly journal related to medicine and surgery in the state of Texas, including articles and case studies by practitioners, official news from various district medical societies, and other information of interest to medical professionals
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