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Universidade Estadual de Campinas (UNICAMP). Instituto de Geociências (IG) (Institutional affiliation from the last research proposal) Birthplace: Brazil
Gelvam André Hartmann in research grants and scholarships supported by FAPESP.
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The objective of this project is to acquisition of an automatic spinner magnetometer (model JR-6A, AGICO) for measurements of remanent magnetization in samples of rocks, sediments and archaeological materials. The availability of this multi-user equipment (EMU) will be of great importance for studies of variations of the geomagnetic field (time scales from a few thousand years), the paleo…
Earth's magnetic field (EMF) of internal origin varies on different timescales, from years to billions of years. Integrated analysis of paleodirection and paleointensity data for the last 10 Ma reveal non-dipole field features are similar to those observed in datasets and field models from centuries to millennia timescales. The main non-dipole feature is the South Atlantic Magnetic Anomal…
Intensity variations of geomagnetic field have been observed at different time intervals, from years to millions of years. Investigations on regional and global scales can provide important information about the evolution of the Earth's magnetic field (EMF), and the operating conditions (low or high energy state) of the geodynamo. Long-period geomagnetic intensity variations reveal low va…
Variations of the Earth's magnetic field (EMF) of internal origin are essential for understanding the mechanisms of field generation, the so-called geodynamo. These variations occur on different scales of time and space, from years to billions of years. In South America, the variations are strongly influenced by the presence of the South Atlantic Magnetic Anomaly (SAA), which is the main …
The Earth's magnetic field (EMF) of internal origin exhibits variations on different timescales, from years to billions of years. Integrated analysis of paleodirection and paleointensity data for the last 10 Ma reveals non-dipole field features that appear similar to those observed in field models over timescales of centuries to millennia. The main non-dipole feature is the South Atlantic…
The Earth's magnetic field (EMF) of internal origin shows variations in different timescales, from years to billions of years. Integrated analysis of paleodirection and paleointensity data for the last 10 Ma reveals non-dipole field features that appear similar to those observed in models and field data for timescales from centuries to millennia. However, the EMF structure is largely limi…
Earth's magnetic field (EMF) changes on highly variable timescales, from milliseconds to billions of years. Monitoring geomagnetic field surface helps to unravel its dynamical origin and, therefore, is crucial for understanding the dynamics of the deep Earth's interior. The South Atlantic Anomaly (SAA), which is characterized by lowest values of the total field intensity when compared to …
The Earth's magnetic field (EMF) of internal origin shows variations in different timescales, from years to billions of years. Integrated analysis of paleodirection and paleointensity data for the last 10 Ma reveals non-dipole field features that appear similar to those observed in models and field data for timescales from centuries to millennia. However, the EMF structure is largely limi…
(Only some records are available in English at this moment)
The Earth's magnetic field (EMF) undergoes significant variations on timescales ranging from milliseconds to millions of years, driven by internal geodynamo processes and external solar influences. A prominent feature of the EMF, the South Atlantic Magnetic Anomaly (SAA), is characterized by a minimum in geomagnetic field intensity and is related to anomalies in Earth's outer core, driven…
Earth's magnetic field (EMF) of internal origin exhibits variations across different time scales, ranging from years to billions of years. An integrated analysis of paleodirection and paleointensity data for the last 10 Ma reveals non-dipolar field features that appear similar to those observed in field models and data for time scales of centuries to millennia. The main non-dipole field f…
The geomagnetic field originated at Earth's outer core is characterized for the dipolar and non-dipolar parts. Non-dipolar field variations over the past few centuries and millennia seem to be responsible for the decreasing of the dipole field moment as well as for the evolution of the large-scale non-dipolar features, particularly the South Atlantic Magnetic Anomaly (SAMA). The SAMA repr…
| 2 / 2 | Ongoing grants |
| 2 / 2 | Completed research grants |
| 3 / 3 | Ongoing scholarships in Brazil |
| 7 / 6 | Completed scholarships in Brazil |
| 2 / 2 | Ongoing scholarships abroad |
| 1 / 1 | Completed scholarships abroad |
| 17 / 16 | All research grants and scholarships |
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