Question

Будь ласка 7 питань до твору(Ну пожалустаааааSecular variations of geomagnetic field Variability of geomagnetic field in time and in a wide range of periods – from minutes to hundreds and thousands of years reflects a complicated of physico – chemical phenomena in the core, lithosphere, ionosphere and magnetosphere of the earth, to investigate modern geodynamic processes at different depths, from the surface layers of the earth*s crust to the core of the earth, data on geomagnetic variations with the periods over 1 year, the so – called secular variations (SV), are widely used. In general, geomagnetic field variations can be considered as a vector sum of the fields from different sources. In the spatial structure of secular variations of geomagnetic field there are distinctly distinguished global, regional and local components. Global peculiarities or focuses of SV embrace areas of thousands of kilometers and have their sources in the earth*s core. Regional and local effects are determined by modern physico – chemical, geodynamic and electromagnetic phenomena in the earth*s crust and upper mantle.The existing chain of magnetic observatories on the territory of Europe allows to study in details the global and regional effects in SV. The local anomalies of SV or the so – called tectomagnetic effects were studied, as a rule, in geodynamic and seismoprognostic testing grounds. P.S. Abr.(SV – secular variations)Abr.(SS spatial structure – speishial)

Answer 1

1) Does variability of geomagnetic field in time and in a wide range of periods – from minutes to hundreds and thousands of years reflect a complicated of physico – chemical phenomena in the core, lithosphere, ionosphere and magnetosphere of the earth?
2) Are data ongeomagnetic variations with the periods over 1 year, the so – called secular variations (SV), widely used?
3)  In general, geomagnetic field variations can be considered as a vector sum of the fields from different sources, can't they?
4) Are there  distinctly distinguished global, regional and local components?
5) Do global peculiarities or focuses of SV embrace areas of thousands of kilometers and have their sources in the earth's core?
6) Regional and local effects are determined by modern physico – chemical, geodynamic and electromagnetic phenomena in the earth's crust and upper mantle, aren't they?
7) What is determined by modern physico – chemical, geodynamic and electromagnetic phenomena in the earth's crust and upper mantle?
8) Does the existing chain of magnetic observatories on the territory of Europeallow to study in details the global and regional effects in SV? 
9) The local anomalies of SV or the so – called tectomagnetic effects were studied, as a rule, in geodynamic and seismoprognostic testing grounds, weren't they?
 

Answer 2

The secular variations of the geomagnetic field refer to the variability of the Earth's magnetic field over time and in a wide range of periods, from minutes to hundreds and thousands of years. These variations reflect a complex set of physico-chemical phenomena in the Earth's core, lithosphere, ionosphere, and magnetosphere. They are used to investigate modern geodynamic processes at different depths, from the surface layers of the Earth's crust to the core of the Earth.

Data on geomagnetic variations with periods over 1 year, known as secular variations (SV), are widely used to study these processes. The spatial structure of secular variations of the geomagnetic field consists of global, regional, and local components. Global peculiarities or focuses of SV cover areas of thousands of kilometers and have their sources in the Earth's core. Regional and local effects, on the other hand, are determined by modern physico-chemical, geodynamic, and electromagnetic phenomena in the Earth's crust and upper mantle.

The existing chain of magnetic observatories in Europe allows for detailed studies of the global and regional effects in secular variations. Local anomalies of secular variations, also known as tectomagnetic effects, have been studied primarily in geodynamic and seismoprognostic testing grounds.

Please let me know if you have any further questions!