Skip to main content

How Tsunami Early Warning Systems Work ?

Tsunamis are a scary and devastating natural phenomenon. On average, two damaging tsunamis occur globally each year. A major, devastating, ocean-wide tsunami occurs roughly every 15 years. To prevent catastrophic loss of life, many countries have independently or jointly developed tsunami early warning systems. 
To understand how these systems work and how they can fail, it is important to understand the causes of tsunamis. At the most basic, a tsunami is caused by a large, sudden motion on the seafloor. Earthquakes beneath or near the ocean most commonly cause this motion, but other potential causes include volcanic eruptions, underwater landslides, or even an above water landslide, such as a large piece of ice breaking off an iceberg or a meteor striking the ocean.

How Tsunami Early Warning Systems Work?




Since a vast majority of tsunamis are caused by seismic activity on the seafloor, warning systems start with seismic monitoring. Sensors on the seafloor monitor for seismic activity caused by earthquakes and volcanoes. If a substantial seismic incident occurs, surface buoy sensors then monitor for changes in the sea level. Tsunami waves could be as shallow as three feet high, so these sensors are placed in an array to determine motion as well as height. These seafloor and surface buoy sensors send data to tsunami warning centers, which are staffed 24/7. The centers monitor the data, perform analysis, and quickly determine whether conditions are met to issue a tsunami warning alert. If an alert is sent, it goes to local radio and television, wireless emergency alerts, NOAA Weather Radio, and NOAA websites. Some tsunami threat areas might also issue warnings through sirens, text message alerts, and phone notifications.

Comments

Popular posts from this blog

Team Work - Meaning and Tips for better Team Work

A single brain is not always capable of making key decisions on its own. To come up with an efficient solution, an individual requires the help and advice of others. A team is established when individuals get together on a common platform with the common goal of completing a task. To guarantee optimum compatibility, team members should ideally come from similar backgrounds and have a single aim. To provide their best, the team members must complement each other and function as a single unit in tight cooperation. "There is no I in Team Work," as the saying goes, and each member must put the needs of his team first. Personal interests must take a second seat. Any team's performance is directly proportionate to the relationship between its members and their combined efforts. What is the definition of teamwork? Teamwork is defined as the sum of each team member's efforts toward the fulfilment of the team's goal. In other words, any team's backbone is its ability t

Scientists discover a new theory / The fundamental property of light – 150 years after Maxwell

Light plays a vital role in our everyday lives and technologies based on light are all around us. So we might expect that our understanding of light is pretty settled. But scientists have just uncovered a new fundamental property of light that gives new insight into the 150-year-old classical theory of electromagnetism and which could lead to applications manipulating light at the nanoscale. It is unusual for a pure-theory physics paper to make it into the journal Science. So when one does, it’s worth a closer look. In the new study, researchers bring together one of physics' most venerable set of equations – those of James Clerk’s Maxwell’s famous theory of light – with one of the hot topics in modern solid-state physics: the quantum spin Hall effect and topological insulators . To understand what the fuss is about, let’s first consider the behaviour of electrons in the quantum spin Hall effect. Electrons possess an intrinsic spin as if they were tiny spinning-tops,

19 Types Of Content Writing Services For Your Business

  It’s hard to know which type of content writing service is the best for your business.  There are so many  different types of content writing services  out there that it’s easy to get confused. You end up wondering if you’re choosing the right one for you. In this post, we’ll get rid of this confusion, once and for all. I’m going to list out the different kinds of writing services you could use.  By the end of this article, you’ll know whether you need a copywriter, a content writer, or a social media marketer and how they can help you achieve your business goals. This post is also useful for writers who want to hone their writing skills in a specific area. Let’s dive in and learn what types of content writing services exist and when you should use them. (Bonus – if you want to  hire the top 1%  of writers, go to the bottom to learn how). Types of Content Writing Services As we go through the list of content writing services, you will find that many of them overlap. That’s perfectly