Listando Observatori de l'Ebre por fecha de publicación
Mostrando ítems 1-20 de 41
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Geomagnetism at Ebro: Present and Future
(International Workshop “Challenges for Geomagnetism, Aeronomy and Seismology in the XXI Century". Roquetes (Baix Ebre), 29 Septiembre-1 Octubre 2004], 2004-10-01)Activities of research and services are performed at the magnetic section of Ebro Observatory. Most of the scientific projects are related to Solar_terrestrial Physics. Latest projects focused on Antarctic ... -
SSC detection using wavelet analysis
(International Workshop “Challenges for Geomagnetism, Aeronomy and Seismology in the XXI Century". Roquetes (Baix Ebre), 29 Septiembre-1 Octubre 2004, 2004-10-01)For Sudden Storm Commencements, several methods aiming automatic detection of the events have been proposed. Most of them are based in the analysis of digital geomagnetic field data using some morphological ... -
An example of operation for a partly manned Antarctic geomagnetic observatory and the development of a radio link for data transmission
(Annals of Geophysics, 2009. Vol. 52, 1 (Febrer), 2009-02)The experience acquired from more than ten years of operation of an Antarctic geomagnetic observatory is described along with the development of data transmission facilities. The observatory was deployed ... -
Vertical and oblique ionospheric soundings over a very long multihop HF radio link from polar to midlatitudes: Results and relationships
(Radio Science, 2009. Vol. 44, Rs2014, 2009-04)A vertical incidence sounder (VIS) was installed at the Spanish Antarctic Base (62.7°S, 299.6°E) during the Antarctic summer survey 2004–2005. In addition, an oblique sounding (OS) system for HF ... -
Behaviour of the quiet day geomagnetic variation at Livingston Island and variability of the Sq focus position in the South American-Antarctic Peninsula region
(2009-08-24)The characteristics of the regular daily variation at the relatively new geomagnetic observatory of Livingston Island have been studied. They include the seasonal and solar cycle variabilities. Studies ... -
A new approach to the hourly mean computation problem when dealing with missing data
(Earth Planet Sp (2009) 61: 945, 2009-10-19)Geomagnetic observatory records are unavoidably affected by primary data interruptions which, in turn, may have possible effects on the accuracy of the definitive data derived from them. One of the ... -
Geomagnetically induced currents in a power grid of northeastern Spain
(Space Weather, 10, S06002, 2012-06-07)Using the geomagnetic records of Ebro geomagnetic observatory and taking the plane wave assumption for the external current source and a homogeneous Earth conductivity, a prediction of the effects of ... -
Midlatitude F region peak height changes in response to interplanetary magnetic field conditions and modeling results
(Blanch, E., and D. Altadill (2012), Midlatitude F region peak height changes in response to interplanetary magnetic field conditions and modeling results, J. Geophys. Res., 117, A12311, doi:10.1029/2012JA018009., 2012-12-13)The response of the electron density peak height of the F2 region, hmF2, to geomagnetic storms has been investigated and a characteristic behavior of the peak height disturbance in relation to local-time, ... -
Automatic detection of sudden commencements using neural networks
(Earth, Planets and Space, volum 65, pàg. 791-797, 2013-08-23)The aim of this work is to develop an automatic system to detect sudden commencements (SCs). SCs are produced by a sudden increase of solar wind dynamic pressure and are detected simultaneously everywhere ... -
Remote Sensor Data Transmission from Antarctica to Spain with a Long-Haul HF Ionospheric Link
(2015)The geophysical observatory in the Antarctic Spanish Station Juan Carlos I (BAE), on Livingston Island (62.6S, 60.4W), has been monitoring the magnetic field in the Antarctic region for more than fifteen ... -
Multipoint observation of the response of the magnetosphere and ionosphere related to the sudden impulse event on 19 November 2007
(Journal of Space Weather Space Climate, 5, A13, 2015-05-18)The aim of this study is to provide a complete scope of a magnetic sudden impulse (SI) event along its way through interplanetary space and the magnetosphere until its arrival to the ground. In our case, ... -
Cent anys de suport a la recerca científica
(2015-05-21)Breu presentació del que ha estat l’experiència de suport a la recerca Geofísica a l'Observatori de l'Ebre, institució amb 110 anys d’història i allunyada de la gran ciutat. La funció desenvolupada per ... -
Vertical and Oblique ionospheric soundings over the long haul HF link between Antarctica and Spain
(Radio Science. 2015, Vol. 50, No.9 (Setembre), 2015-09)This paper presents a comparative study between the oblique sounding results, theInternational Telecommunication Union Rec533 HF prediction model, and the vertical sounding results of atransequatorial ... -
Narrowband and Wideband Channel Sounding of an Antarctica to Spain Ionospheric Radio Link
(Remote Sensing. 2015, Vol.7, 2015-09)La Salle and Ebro Observatory have been involved in remote sensing projects in Antarctica for the last 11 years (approximately one solar cycle). The Ebro Observatory has been monitoring and analyzing ... -
Conductivities consistent with Birkeland currents in the AMPERE-driven TIE-GCM
(Marsal,S.(2015),Conductivities consistent with Birkeland currents in the AMPERE-driven TIE-GCM, J. Geophys. Res. Space Physics, 120, 8045–8065, doi:10.1002/ 2015JA021385., 2015-09-26)The Active Magnetosphere and Planetary Electrodynamics Response Experiment (AMPERE) satellite mission has offered for the first time global snapshots of the geomagnetic field-aligned currents with ... -
Physical Layer Definition for a Long-Haul HF Antarctica to Spain Radio Link
(Remote Sensing. 2016. Vol.8 No.5 (Maig), 2016-05)La Salle and the Observatori de l’Ebre (OE) have been involved in a remote sensing project in Antarctica for the last 11 years. The OE has been monitoring the geomagnetic activity for more than twenty ... -
The Solar Rotation in the 1930s from the Sunspot and Flocculi Catalogs of the Ebro Observatory
(Solar Phys (2016) 291:2269–2279, 2016-09-06)The tables of sunspot and flocculi heliographic positions included in the catalogs published by the Ebro Observatory in the 1930s have recently been recovered and converted into digital format by using ... -
Fons Monturiol a la Biblioteca de l'Observatori de l'Ebre: anàlisi grafològica de les anotacions i estudi de l'estat de conservació
(2016-10-28)L’any 2009, aprofitant els actes de la celebració del 150è aniversari de l’avarament de l’Ictíneu, es va donar a conèixer la troballa dels llibres propietat de Narcís Monturiol amb una exposició. El ... -
Use of spherical elementary currents to map the polar current systems associated with the geomagnetic sudden commencements on 2013 and 2015 St. Patrick’s Day storms
(Journal of Geophysical Research: Space Physics, 112, 194-211, 2017-01-13)Araki’s model of geomagnetic sudden commencements (SCs) establishes that the ground magnetic signatures globally observed after the onset produced by an increased solar wind dynamic pressure impacting ... -
Vertical and oblique ionospheric soundings performance comparison over the 12,760 km transequatorial HF link between Antarctica and Spain
(Radio Science. 2017. Vol.52, No.4 (Abril), 2017-03)This paper presents the second part of the study of the oblique sounding of a 12,760 km transequatorial ionospheric link between Livingston Island (Antarctica) and Cambrils in Spain. The study consists ...