SArvelius Consultant
Space and technology for you
Space and Technology for you
Are you interested in Space and Technology ?
You will find what you are looking for here .
2021, June
It's a reboot!
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Space weather, Space environment
Space weather is the effect of solar flare and coronal mass ejection (CME) on the sun's surface on the earth and the solar system's space .
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Human activities in the space environment , such as satellite operations and the effects of geomagnetic storms as a result of the solar-Earth's interaction through the Earth's magnetic field, on the power grid can be evaluated quantitatively through both long-term predictions and short-term forecasts in space weather.
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In recent years, the concentration of carbon dioxide and water vapor in the upper atmosphere has increased, and it is unknown at this time how this trend is related to global warming , but one scenario is " runaway warming " as on Venus . It is necessary to consider it as a sign of omen.
Service goals
Communication via space-propagating waves (excluding proximity to the ground)
Operation and operation of outer space projectiles (eg in the stratosphere and upwards) and satellites (from LEO up to GSO)
Power networks, pipelines, etc.
Climate issues
Service Ex.1: Calculation of the position and strength of sunspots, the scale and probability of sunflowers and CME are expected of them
Service Ex.2: Quantitative evaluation of the effects of ultraviolet and X-ray radiation emanating from solar flares on satellites
Solar flares are sources of ultraviolet and X-rays that reach the earth at the speed of light and cause strong ionization of objects in space above the earth's atmosphere.
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CME consists of plasma particles wrapped in a strong magnetic field "peeled" from the sun's surface and reaches the earth within a range of one and a half to three to four days, depending on the speed at the time of the eruption. CME collides with the Earth's magnetic field and deforms it, and the large - scale magnetic field disturbance caused by the deformation takes the form of a geomagnetic storm .
The satellite's material and function can be modeled with e.g. detector simulator , and the radiation intensity at the satellite position can be estimated and calculated from data from the solar observation satellite at several points . Therefore, it is possible to quantitatively evaluate the effects of radiation emanating from solar flares on satellites.
Service Ex.3: Calculation of the CME scale and the point of collision between CME and geomagnetism
Service Ex.4: Calculation of induced current intensity and vectors from local geomagnetic field disturbance data
The CME scale and the point of collision between CME and geomagnetism can be derived from the "shadow" of muon cosmic radiation blocked by CME's magnetic field.
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Therefore, satellites and the like under CME can be predicted. However, the strength of CME and its impact on satellites etc. can not be evaluated in this context.
The induced current can be calculated from the difference between steady state data for the geomagnetic field and Biot-Savart's law. In addition, since the data for the geomagnetic field consists of three components, it is possible to discuss the strength (of the induced current) in each direction.
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This induced current is called geomagnetic induced current ( GIC ) in this context, and it becomes remarkable at high latitude and high geomagnetic "latitude" due to the structure of geomagnetism.
Scientific article in English