myfirstimpression

The movement of nature is closely related to our lives. Satellite data is indispensable to know the actual situation. Capturing the actual state of natural disasters from space It is not easy for us at the surface to understand the nature of a wide range of large-scale natural disasters. However, a variety of information can be obtained by using satellites that can overlook the whole from afar. For example, ground surface movements such as land subsidence and crustal deformation can be known by measuring the distance from the satellite to the ground surface. Using a method called interference analysis with a microwave sensor, it is possible to capture the movement of the ground surface with an accuracy of several centimeters. In particular, the PALSAR radio wave (L-band) installed in ALOS has the advantage of high vegetation permeability and the ability to capture changes in the ground almost without being affected by vegetation on the ground surface. Therefore, it is especially us...

If you cannot get out quickly, it is best to wait for the earthquake.   Stairwells are a weak point in buildings and lifts often stop working.   In addition, you run the risk of being damaged by glass and other falling material if you run out. Take shelter under a solid piece of furniture, such as a desk or bed.   If the furniture is moving try to move you too so that you continue to be under it. If there is no protection, be sure to be close to an inner wall.   Do not lie under windows.   Some houses have strong door panels that can provide some protection. Protect your head from falling things. As soon as the earthquake is over, you should head out to an open place, as most large earthquakes are followed by heavy aftershocks. Advice if you are outdoors when an earthquake occurs: Try to get yourself to an open place. Are you surrounded by buildings beware of falling objects, such as glass. Pay attention to fallen electricity lines and leaking gas li...

Earthquakes occur when the stresses that build up due to movements in the earth's crust or upper mantle are released. Large amounts of energy are released and disseminated in the form of seismic waves through the earth. It is these waves that cause the shaking felt by an earthquake. Earthquakes can occur under a variety of conditions. The areas in the world most affected by earthquakes lie at or near the boundaries between the various tectonic plates that build up the earth's crust. Earthquakes also occur during volcanic eruptions and land elevations . Nuclear weapons tests underground also trigger minor earthquakes. The reason that most and most powerful earthquakes are registered near the boundary between the tectonic plates is that the greatest stresses build up in these zones. At the plate boundaries are also found the vast majority of the earth's volcanoes . Large earthquakes are always followed by a long series of aftershocks that can last for months and amount...