Papers by julio cesar Gianibelli
Resumen La red SARINET (South America Riometer Network) es una red de riómetros (radio ionospheri... more Resumen La red SARINET (South America Riometer Network) es una red de riómetros (radio ionospheric opacity meter) de la Universidad de Takushoku (Tokio, Japón) ubicada en Sudamérica para investigar la ionósfera y principalmente los efectos que sobre ella producen la precipitación de partículas energéticas, los cuales se ven incrementados por la presencia de la anomalía magnética del Atlántico sur (AMAS). La red posee actualmente 12 riómetros operativos, cinco de los cuales se han instalado por gestión y con participación del Departamento de Geomagnetismo y Aeronomía de la Facultad de Cs. Astronómicas y Geofísicas de la UNLP, en distintas instituciones de la Argentina. En el presente trabajo se repasan los principios de funcionamiento de los riómetros, enfocándose particularmente en los de haz cenital y los de haz direccionable (riómetros 2D) emplazados en nuestro territorio. Se aborda, a modo de ejemplo, el procesamiento de datos de las mediciones sobre un evento en particular, obse...
A b s t r a c t :The state of the Earth's fluid core is usually investigated on the basis of ... more A b s t r a c t :The state of the Earth's fluid core is usually investigated on the basis of the observed features of geomagnetic variations at t he Earth's s urface. This task also involves difficulties associated with shorter time scale variations of internal origin which appear to b e undistinguishable from the external fields, at least
In the present work are compiled the coefficients of spherical harmonics analysis representing th... more In the present work are compiled the coefficients of spherical harmonics analysis representing the dipole and cuadrupole aproximation of the Earth Magnetic Field, from 1550 to 2005 years. The temporal variation of each coefficient are approximately by a non linear function in the interval of study and then forecasting the values up to year 2100. The position of the excentric dipole aproximation and also the energy for the dipolar and cuadrupolar components and their relationship are evaluated. A conclusion is that the changes for the year 2100 will be a very important transition to a multipolar expression of the Earth Magnetic Field after year 2100. Will be possible that the South Atlantic Anomaly shows very low values for total magnetic intensity, and the energy of cuadrupole will be 14% of the dipole energy comparatively to the 5% in the year 2005.
AIP Conference Proceedings, 1993
The main objective of this work is to present an overview of the influence of the Solar variabili... more The main objective of this work is to present an overview of the influence of the Solar variability on Space Geophysics phenomena with results for the central region of the South Atlantic Magnetic Anomaly (SAMA), in southern Brazil and South America. The investigation of the behavior of the low terrestrial ionosphere is been achieved through the South America VLF NETwork SAVNET, which has an operational station at the Southern Space Observatory - SSO/CRS/INPEMCT, (29.4°S, 53.8°W, 480 m (a. s. l.), at São Martinho da Serra, RS, Brazil, strategically located near the SAMA center, around 23000 nT), by analyzing the VLF (Very Low Frequency: 3 - 30 kHz) waves propagation over long distances within the Earth-ionosphere waveguide, since these characteristics transmit information about the electrical properties of the waveguides boundaries. For the study of the SAMA data from the South America Riometer Network - SARINET (an International Scientific Cooperation between Japan, Brazil, Argenti...
We study the precipitation records from La Plata (Province of Buenos Aires, Argentina) during 190... more We study the precipitation records from La Plata (Province of Buenos Aires, Argentina) during 1909-1999 in order to determine the distribution of rainfall and its relationship with the geomagnetic aa index. We attempt to explain the maxima and minima by the geomagnetic field variations. We suggest an interaction between both phenomena.
Six magnetic data sets have been merged to produce an integrated magnetic anomaly map that covers... more Six magnetic data sets have been merged to produce an integrated magnetic anomaly map that covers part of the Argentine margin and adjacent onshore terrain in an area centered at 42° S, 60° W. One of the main features of the map is a high intensity anomaly that is abruptly interrupted at a line along which the magnetic lineations related
Every five years a new International Geomagnetic Reference Field (IGRF) model is released and the... more Every five years a new International Geomagnetic Reference Field (IGRF) model is released and the secular variation for the previous period is updated, producing the definitive DGRF model. Once a DGRF is released, the previously calculated mag- netic anomalies are updated. We show the importance of this correction for the 1995-2000 period, in which the DGRF-IGRF difference is anomalously large.
ABSTRACT M.E. Ghidella, C.J. Chernicoff, C.M. Paterlini, J.C. Gianibelli, E. Suárez, I.R. Cabassi... more ABSTRACT M.E. Ghidella, C.J. Chernicoff, C.M. Paterlini, J.C. Gianibelli, E. Suárez, I.R. Cabassi y J. Kostadinoff, 2000. Estudio de avance de la integración de levantamientos magnéticos marinos y continentales en la franja litoral entre las latitudes 35° y 47° S, Argentina. 9º Congreso Geológico Chileno, Actas, Vol. 2, Simposio Nacional No. 5: 443-447. Artículo, 5 páginas. LAS ACTAS DE ESTE CONGRESO ESTÁN PUBLICADAS, PERO NO HAY VERSIÓN DIGITAL. Para quien necesite este trabajo, puedo escanearlo, y enviarlo via email: [email protected] ; [email protected]
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Papers by julio cesar Gianibelli