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NASA balloons discovery of solar storms affect the Earth's magnetic field

via:博客园     time:2016/8/20 16:30:17     readed:1518

NASANASA 探空气球发现太阳风暴影响地球磁场

During this solar storms, three BARREL balloons flying over the Antarctic region and the connecting portion of Earth's magnetic north pole, the magnetic field is called a closed magnetic field lines

In the 2013-2014 Antarctic summer, a NASA research team individually flying a series of balloons translucent science. Each mini-film balloon or BARREL all over the icy ground floated several weeks. We tried to capture the atmosphere of Earth's magnetic field from the falling rain electrons. Then in January 2014, BARREL not been observed before things: During solar storms, BARREL first mapping out how solar storms lead to changes in Earth's magnetic field and move. Transfer the magnetic field structure much faster than expected. Learn how the near-Earth space environment react to solar storms, to help protect space technology.

During this solar storms, three BARREL balloons flying over the Antarctic region and the connecting portion of Earth's magnetic north pole, the magnetic field is called a closed magnetic field lines, because it is rooted in the earth at both ends. One BARREL balloon located on a magnetic field line, this line one end of the earth, one end connected to the solar magnetic field, is an open magnetic field lines. During solar storms, and two magnetic field lines in the closed and open magnetic field lines back and forth, showing the open and closed magnetic field lines because the boundary is how the storm moves. Alexa Halford said, to make a model of open and closed borders between the magnetic field lines is very difficult. Because we are able to say exactly what we are in the position to see this border, so this will help to simulate changes in the surrounding magnetic field of the Earth.

We live in a lively atmosphere stellar magnetic field extending in, to some extent, which means we have been located in the sun's outflow of charged particles, called the solar wind. Most of the solar wind particles is relatively slow, but even the fastest particles also because of the Earth's magnetic field are deflected away from the Earth's surface. Most of the Earth's magnetic field there is a full point in a region near Antarctica, the magnetic South Pole. Most of the circulating magnetic field into space and then connect back to earth magnetic North Pole. This annular magnetic field & mdash; & mdash; closed magnetic field & mdash; & mdash; for charged particles create a barrier to prevent it reaches Earth.

But a small part of the Earth's magnetic field is open, connecting the solar magnetic field, rather than bending back on Earth. It is this open field of charged particles from the sun provides a way to enter the Earth's atmosphere. Earth's magnetic field in the open and closed magnetic field lines are boundary has been change. Scientists have known its borders is moving, but it is difficult to pinpoint how the change is carried out, when the generation and transfer more quickly, which is the use of reason BARREL balloon. BARREL is used to study the Earth's radiation belt electrons get into the atmosphere.

David Sibeck said scientists balloon observations of solar particles into the Earth's magnetic field, in order to identify the outer boundaries of Earth's magnetic field. The number of particles number of particles located in the boundary of the magnetic field lines calculated with two balloons balloon observed BARREL other matches, which enhances BARREL balloon actually crossed the grounds of the Sun and the Earth's magnetic field boundary.

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