SEA LEVEL MEASUREMENT USING SATELLITES

Abstract

Sea level measurement represents a huge interest and importance globally in the world being one of the most discussed and relevant topics in scientific society. It is also related to one of the most important global problems in the modern time as global warming and water levels dramatically increasing in the world ocean. However, accurate measurement and analysis of the sea levels can prevent global catastrophe and assist humanity to understand the nature of planet Earth and how it reacts to global processes flowing in every continent, all over the world. There are two main causes of sea level rise, and both are heat related. Glaciers and ice sheets are large masses of ice that lie on land. As our planet is getting warmer, this ice rapidly melts and flows into the open oceans. The more water in the oceans, the higher the sea level. Secondly, water expands when heated. Thus, warm water takes up more space in our oceans, raising sea levels. Together, these two things have raised the sea level by about six to nine inches (about fifteen to twenty-two centimeters) since 1900s. This is a big problem for millions of people living in settlements close to the coast. Unfortunately, you can't just drop a long line in the ocean to raise sea levels. Sea level varies from place to place of poisoning. This is due to differences in geography, gravity, temperature, ocean currents and tides. Oceans cover about 70 percent of the globe. So, to find out if the sea level is rising all over the planet, you have to restore the rulers in millions of different places. Keywords: Global warming, sea level measurement, satellites, space observers, planet’s surface.