A5084094271- Ionosphere and magnetosphere dynamics
- GNSS positioning and interference
- Geophysics and Gravity Measurements
- Earthquake Detection and Analysis
- Solar and Space Plasma Dynamics
- Geomagnetism and Paleomagnetism Studies
- Inertial Sensor and Navigation
- Landslides and related hazards
- Geography and Education Methods
- Cryospheric studies and observations
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Geological and Tectonic Studies in Latin America
- Astronomical Observations and Instrumentation
- Educational Technology in Learning
- Environmental and Ecological Studies
- Satellite Communication Systems
- Power Line Communications and Noise
- Chromium effects and bioremediation
- Reservoir Engineering and Simulation Methods
- Engineering and Information Technology
- Advanced SAR Imaging Techniques
- Complex Systems and Time Series Analysis
- Electrical Fault Detection and Protection
- Lightning and Electromagnetic Phenomena
- Magnetic Field Sensors Techniques
Loyola University Chicago
2024
Universidad Nacional de La Plata
2013-2023
Consejo Nacional de Investigaciones Científicas y Técnicas
2011-2023
Argentine-German Geodetic Observatory
2023
Argentine National Observatory
2023
Centro Científico Tecnológico - La Plata
2008-2022
Centro Científico Tecnológico - San Juan
2004-2019
National Institute for Space Research
2015-2016
Universidade do Vale do Paraíba
2016
Instituto Tecnológico de Aeronáutica
2016
Abstract The equatorial electrojet (EEJ) is a narrow band of current flowing eastward at the ionospheric E region altitudes along dayside dip equator. Mutually perpendicular electric and magnetic fields over equator results in formation ionization anomaly (EIA), which turn generates large electron density variabilities. Simultaneous study on characteristics EEJ EIA necessary to understand role This helpful for improved estimation total content (TEC) range delays required satellite‐based...
Abstract The present study investigates the ionospheric total electron content (TEC) and F‐layer response in Southern Hemisphere equatorial, low, middle latitudes due to major sudden stratospheric warming (SSW) event, which took place during January–February 2009 Northern Hemisphere. In this study, using 17 ground‐based dual frequency GPS stations two ionosonde spanning from 2.8°N 53.8°S, longitudes 36.7°W 67.8°W over South American sector, it is observed that ionosphere was significantly...
The main purpose of this investigation is to study the ionospheric F region response induced by intense geomagnetic storm that occurred on 7–8 September 2002. index Dst reached a minimum −181 nT at 0100 UT 8 September. In study, we used observations from chain 12 GPS stations and another 6 digital ionosonde stations. It should be mentioned that, soon after sudden commencement (SC) 1637 7 September, TEC variations midlatitude in both hemispheres showed an positive phase. However, during...
Abstract The present work is the first of a two‐part paper on Embrace Magnetometer Network. In this part, we new Network (Embrace MagNet) in South America, which originally planned to cover most eastern portion Southern America longitudinal sector by installing and operating fluxgate magnetometer stations. We discuss purpose scientific goals network, associated with aeronomy space weather. provide details instrumentation, location sensors, sensitivity matching process, gain installation....
The Sun was very active in the early part of November 2004. During period 8–10 2004, intense geomagnetic disturbances with two superstorms were observed. In this paper, we have investigated generation and suppression equatorial ionospheric irregularities daytime changes F region electron density Latin American sector during disturbances. We present sounding observations carried out at Manaus Sao Jose dos Campos, Brazil, geomagnetically disturbed period. Also, GPS obtained from several...
During the last decade Global Positioning System (GPS) Continuous Operating Reference Stations networks have become a new important data source for meteorology. This has dramatically improved ability to remotely sense atmosphere under influence of severe mesoscale and synoptic systems. The zenith tropospheric delay ( ZTD ) is one atmospheric variables continuously observed, its horizontal variations, gradients, are routinely computed nowadays within dual‐frequency GPS processing, but their...
The Southern Patagonian Icefield (SPI) is the largest continuous ice mass in Hemisphere outside Antarctica. It has been shrinking since Little Ice Age (LIA) period, with increasing rates recent years. An uplift of crustal deformation response to this deglaciation process expected. goal investigation analyze caused by retreat using time-series data from GPS stations (2015–2020) northern area SPI. For purpose, we installed two on rocky nunataks SPI (the GRCS near Greve glacier and GBCS close...
Signals from Global Positioning System (GPS) satellites received at the surface of Earth have passed through terrestrial atmosphere and are therefore affected by refraction in ionosphere. A large number permanent dual frequencies GPS tracking stations been built up last years their data proved to be suitable study The main goal this paper is assess capability these observations continuously routinely monitor ionosphere a global scale. interest was focused on retrieving coefficients spherical...
Abstract. The response of the ionospheric F-region in South American sector during super geomagnetic storms on 29 and 30 October 2003 is studied present investigation. In this paper, we sounding observations period 29–31 obtained at Palmas (a near equatorial location) Sao Jose dos Campos location under southern crest anomaly), Brazil, along with 27–31 from a chain GPS stations covering Imperatriz, to Rio Grande, Argentina. Also, complementary that include sequences all-sky images OI 777.4...
The total electron content (TEC) derived from two Global Positioning System (GPS) receivers localized at Palmas (PAL, 10.2oS, 48.2oW, dip latitude 5.5oS), near equatorial region, and São José dos Campos (SJC, 23.2oS, 45.9oW, 17.6oS), under the southern crest of ionization anomaly (EIA), in Brazilian sector are used this paper. TEC latest available IRI-2012 model same locations is also used. A comparative study between GPS-TEC analyzed during deep low solar activity period 2009 unusual cycle...
Abstract The present work is the second of a two‐part paper on Embrace Magnetometer Network. In this part, we provide some first scientific findings that have already achieved with network. We identified diurnal and seasonal natural variations H component. provided precise determination sudden storm commencements impulse. showed Δ amplitudes derived from MagNet during intense magnetic are in very good agreement Dst index. it possible to investigate effects solar quiet ionospheric current...
GNSS meteorology is today one of the most growing technologies to monitor severe weather events. In this paper, we present usage 160 GPS reference stations over period 14 days and track Hurricane Harvey, which struck Texas in August 2017. We estimate Zenith Wet Delay (ZWD) tropospheric gradients with 30 s interval using TOMION v2 software carry out processing Precise Point Positioning (PPP) mode. study relationship these parameters atmospheric variables extracted from Tropical Rainfall...
ABSTRACT. In this paper we present the first steps given towards development of South American K index (Ksa) based on measurements made by Embrace Magnetometer Network. We present: (a) a description magnetometer and network; (b) procedure used to calibrate network equipments; (c) obtain each station scale its corresponding upper limits ranges for three-hour-range (thereafter referred as K9 threshold); (d) some particularities regarding Quiet Day Curve (QDC) deviation long term...