...Earthquakes are one of Mother Nature’s most powerful forces and have plagued our lives for as long as people have inhabited the earth. These dangerous acts of the earth have been the cause of many deaths in the past century. So what can be done about these violent eruptions that take place nearly without warning? Predicting an earthquake, until now, has almost been technologically impossible. However, with recent improvements in technology and science, many lives have been saved and many more will be. What is an earthquake and how do they occur? Did you know that most of the famous mountains are a result of an earthquake? (Cosmeo, 2008) That tidbit of information was just a little side note; now back to the paper. Earth is a planet that is made up of multiple layers. These layers include an inner layer and an outer layer and layer in between. The inner layer of the earth is a ball of molten rock that rotates within the earth. The other layers that are on top of the inner layer are floating about as a pliable ball of molten rock. The outer layer is what we refer to as the crust. The crust is very thin when compared to the other layers of the Earth. For example, think of the outer layer of an orange as it relates to the interior of the orange. This example relates closely to what the Earth looks like when we examine the crust. The crust and other layers floats upon the mantle core. The crust of the earth is made up of multiple pieces. Each of these giant pieces is called a tectonic...
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...Geology Earthquakes I chose to do my assignment on earthquakes, because I have been through many growing up in California, and I have always wondered about them. There are many types of earthquakes. The most common are tectonic, which my paper will be about. There are also volcanic, collapse and explosion earthquakes. All earthquakes create waves that travel through the Earth's interior. An earthquake is the sudden shifting of the earth's natural means of releasing stress. When the shifting occurs, it creates vibrations, called seismic waves. The speed of seismic waves depends on the elasticity of the materials through which they are traveling. Rocks have elastic properties. When forces are applied to rocks, such as pulling, pushing, twisting, or compression, they change their shape. Rocks like other materials with elastic properties have an elastic limit,any additional force will deform the object's shape. The elasticity of a material is controlled by its density and stiffness. There are three types of waves that are created when stress is released as energy in earthquakes. Primary waves or P-waves, is the fastest, and the first detected by seismographs. They are able to move through both liquid and solid rock. P-waves are like sound waves; they are compressed and expand matter as they move through it. Secondary waves or S-waves, are the waves directly following the P-waves, they are transverse waves. As they move, S-waves cut the rock they travel through sideways...
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...New Madrid(1811-1812) In the autumn of 1811, the United States was barely 35 years old. The fledgling nation included only 17 states, all east of the Mississippi River, but it boasted a lot of new territory thanks to the Louisiana Purchase of 1803. Neither the buyers nor the sellers knew that the recent addition's basement contained a seismic time bomb nearly ready to go off At around 2:15 a.m. on December 16, 1811, a series of massive earthquake pummeled what is now southeastern Missouri and northeastern Arkansas with ground motions so strong that trees snapped in two as they whipped back and forth. The landscape rose several meters in some areas and sank in others, changing the courses of creeks and waterways. During one of the quakes, even the mighty Mississippi was diverted; portions near the quake's presumed epicenter flowed backward for at least several hours, and possibly a day or more. People felt the temblor as far away as New York state, and seismic vibes from an aftershock that struck at dawn traveled almost as far, reaching residents in Georgia and what would soon become the state of Louisiana. Another quake of a similar size , maybe an aftershock, or maybe a separate quake along a different portion of the same fault zone - rumbled on January 23, 1812. The final major shaking in the series came about two weeks later, on February 7, when spreading seismic waves flung books from their shelves in Charleston, S.C., and rattled cups and saucers in Washington, D.C. As...
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...extent can preparedness and planning mitigate the effects of earthquakes? Whittow in 1980 defines a hazard as a “perceived natural event which has the potential to threaten both life and property, and a disaster is the realisation of this hazard.” Earth hazards can therefore include all natural events including earthquakes, volcanoes, flooding and mass movement. Due to the very nature of these events “mitigating” (measures taken to reduce the impacts of a hazard beforehand) can be more successful for hazards such as volcanoes which are arguably more predicable than earthquakes and flash flooding. Despite the advances over the past few decades there is no “magic bullet” (Dr Charles Connor) in earth hazard prediction, and therefore mitigation – and the success remains very much dependent upon a number of factors including money available, and the number of vulnerable individuals. Firstly, earthquakes, which are caused by sudden movements of the earth’s crust which result in violent shaking, liquefaction, and in extreme cases tsunamis, can to an extent be prepared for and mitigated for, and this is where money is being channelled into. Preparation and planning involves the retrofitting of buildings to create “earthquake-resistant” societies, aseismic design features (including concrete and steel frames to provide stability), as well as planning exclusion zones and evacuation routes in the case of an earthquake. Earthquake prediction is very closely linked to preparedness as if an event...
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...Earthquakes On October 17, 1989, as my family and I were preparing to watch game 3 of the World Series, a special news break announced that there had been a devastating earthquake that had struck the San Francisco bay area. News cameras quickly began showing the devastation that this magnitude 6.9 earthquake had wrought. Buildings were on the verge of collapse and the two tier bay bridge had partially collapsed trapping hundreds of motorists. 63 people lost their lives due to the earthquake, 3,500 were injured and over 100,000 buildings were damaged (bbc.co.uk, 2005). Earthquakes are notorious throughout history as devastating phenomena, but what causes them? In order to understand what makes the earth tremble so violently, you have to delve deep under the Earth’s surface. At one time, scientists thought that the earth’s crust or Lithosphere was continuous without any breaks or cracks but in the 1960’s, new research showed that the lithosphere was actually a fluid puzzle of irregular segments, or plates. These plates are made up of cool, solid rock that is four to forty miles thick. These enormous blocks of Earth’s crust vary in size and shape and cut through continents and oceans. There are nine major plates. Six of them are named for the continents they are embedded in: the North American, South American, Eurasian, African, Indo-Australian, and the Antarctic. The other three are oceanic plates called the Pacific, Nazca and Cocos plates. These plates are in constant...
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...Charleston, that day we had a major earthquake of the likes of which I have never felt. The day started off as a nice calm day. My mom and I were reading a book and then all of a sudden I could hear this rumbling sound that seemed to come from inside earth. It started off as a gentle vibration then after a few minutes the noise and the vibrations became more violent. It was as if the earth had a terrible stomach ache. The shake got more violent after a few minutes pictures were thrown of the wall books flew of the shelves. People were screaming and the air smelt and tasted like dust. We hid under a chair but I forgot to blow out a candle I lit and it fell to the floor and the house caught on fire. Once we smelled the fire we went for the door but as soon as we were close to the door the fire spread right into our walkway. We were trapped with no were to go so we rushed back to our hiding place but before i could make it a hot metal pipe landed on my legs I was stuck the pipe broke my legs. The fire had subsided so we made out the house. My mom carried me to the hospital which luckily was still standing. By the time we got there the tremors had stopped. A few weeks later I lie awake in my hospital bed reading a newspaper the headlines stated, "Massive earthquake shakes Charleston- 96 people die and many more injured ". In two weeks I will be released from the hospital in a wheel chair but every night I will pray that we never have a earthquake again. I mourn with the families...
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...5/16/2015 Nepal Earthquake: Afterthoughts | The Daily Star Home Shout 12:00 AM, May 07, 2015 / LAST MODIFIED: 04:59 PM, May 13, 2015 Nepal Earthquake: Afterthoughts Ishtiaq Ahmed NEPAL, AS OF NOW Sitting at the base of Mount Langtang, a 7000m high mountain in the Nepalese Himalayas, there's a small village of the same name. On April 25, 2015 right when the sun was high up in the Langtang valley, the little village of 200 people was destroyed completely. The avalanche that followed the notorious Nepal earthquake had completely wiped the little village off the face of the earth. Now, almost two weeks after the incident, the death toll in Nepal has risen to over 7000, and the number of injured are twice that many. The pungent greywhite smoke above the crematory pyres of the Pashupatinath Temple is getting thicker and thicker each day. UNDERSTANDING EARTHQUAKES As we all know, the outer crust of the earth is very thin compared to its core. This outer crust is basically composed of several continental plates. So what happens is this: these plates try to move relative to each other over longer periods of time. The adjoining line of two consecutive plates is called a "fault line". When the plates try to move, there are slips along the fault lines which disturb the surrounding surface areas. Lands may go up, valleys may be formed or rivers may change courses. Most of the Himalayas were puffed up high in the skies from underneath the ocean in a series of earthquakes ages ago...
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...sense and check your answer. You'll be given more credit on the HW (and in life in general) for admitting your answer seems wrong based on simple logic. Explaining your logic and admitting you got tripped up by the calculation is better than standing by an answer that really make no sense at all. Altimeter measurements. 1) The basic principle of satellite altimetry is similar to that of acoustic echo sounding from ship. A radar pulse is sent out, it reflects off the ocean surface and returns to the satellite. The speed of the pulse and the round trip travel time are then used to determine the distance between the satellite and the sea surface. Lets say the JASON-2 satellite is orbiting roughly 1300 km above the reference ellipsoid of the earth. It sends...
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...the island, which was also a centre for trade and commerce. The rulers held sway not just over their own people but over the Mediterranean, Europe and North Africa” (Menzies). The Greek philosopher, Plato, wrote the above description of Atlantis in 355 B.C. Plato had originally planned to write a trilogy of books on subjects such as the creation of the world, the nature of man, the story of Atlantis as well as other subjects. The first book, Timaeus, was completed, Critias, which contains the story of Atlantis, was incomplete, and Hemocrates, was never written (Levy). The story of Atlantis is one of the oldest myths of mankind, a lost paradise and the most popular of all supposed advanced prehistoric lost civilizations. It’s location has been assigned to almost every possible place on earth including Sardinia, Crete, Cyprus, Malta, Turkey, Israel, Sinai, Sweden, Bahamas, Bermuda Triangle, Japan and even Kumari Kandam (“Lost Continent”). In Plato's book, Timaeus, a character named Kritias tells an account of Atlantis that has been in his family for generations. According to the character, the story was originally told to his ancestor, Solon, by a priest during Solon's visit to Egypt. There had been a powerful empire located west of the “Pillars of Hercules” (what is now known as the Straight of Gibraltar) on an island in the Atlantic Ocean. The nation there had been established by Poseidon, the Greek god of the sea. Poseidon...
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...The beliefs of the ancient Greeks were full of the violent storms, volcanoes and earthquakes that were a part of their experience. Greek mythology is based on legends passed down through generations by word of mouth, so there are many versions of Greek mythology and not all of the stories agree with one another. advertisement Myths explained nature, taught moral lessons, and provided entertainment. Greek poets created epic stories based on ancient legends. An epic is a long poem about great heroes and their deeds. Like most ancient cultures, the ancient Greeks were polytheistic, but many of their gods looked and acted like human beings. The ancient Greeks believed their gods had unlimited powers, yet Greek gods married, had children, played...
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...bcs01103071 ¬ Muhammed Arslan Akram Reg. no. bcs01103181 ¬ Muhammed Iqbal Reg. no. bcs01103100 ¬ Syed Ali Farhan Tirmzi Reg. no. bcs01103093 2 3 ABSTRACT It is an undeniable truth that each and every thing which has come in to existence will come to an end. There is a spring after an autumn and autumn have to face spring after it. The three Abrahamic religions (Islam, Christianity & Judaism) are agreed on the same fact that one day the earth will meet to its end. Even many non-Abrahamic religions and scientists are agreed on the same truth. In this assignment, We will discuss different views on the topic. 4 |Contents | | |...
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...THE OCCURRENCE OF EARTHQUAKE: IT’S OUR FAULT! BY: WILFREDO D. BARTOLO, JR. TEACHER III GUIDE CARD During an earthquake, blame it on the fault! Earthquake is one of the most frightening calamities that human beings can ever experience. You grew up believing that beneath the earth are steady, solid and hard rocks, but why it can suddenly shake? You do not know what to believe anymore? Earthquake is unstoppable! Just remember, if God is with us who can be against us? In the same manner that if we have clear understanding of earthquake and fault, why stop believing, right? Can you tell what happened in the picture? Why does an earthquake occur? What is the relationship between a fault and an earthquake? This lesson introduces you to earthquake and fault. If there isThis lesson introduces you to earthquake and fault. If there is an earthquake, there is a fault. If there is a fault, there is an earthquake. As a challenge to understand this cause and effect relationship, from me to you are exercises about earthquake and fault. Have a fault – y journey ahead! ACTIVITY CARD NO. 1 BEFORE AND AFTER Pictures show before and after an earthquake. Can you identify these? ACTIVITY CARD NO. 2 FAULT FINDER Do you see anything unusual? Find the difference. Find the fault. ACTIVITY CARD NO. 3 FAULT TO FAULT There are to kinds of fault. Tell one from the other. ASSESSMENT CARD ALL ABOUT EARTHQUAKE AND FAULT Fill...
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...A seismic tremor (otherwise called a shudder, tremor or quake) is the shaking of the surface of the Earth, coming about because of the sudden arrival of vitality in the Earth's lithosphere that makes seismic waves. Quakes can extend in size from those that are weak to the point that they can't be felt to those sufficiently vicious to hurl individuals around and decimate entire urban areas. The seismicity or seismic action of a territory alludes to the recurrence, sort and size of quakes experienced over a time frame, Quakes are measured utilizing estimations from seismometers. The minute size is the most well-known scale on which tremors bigger than roughly 5 are accounted for the whole globe. The more various quakes littler than greatness 5...
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...I recently attended a lecture by Dr. Neil DeGrasse Tyson, famed astrophysicist and director of the Hayden Planetarium. His starting topic was earthquakes, since the state of Connecticut had experienced eleven minor earthquakes in the previous week. Residents of California may be accustomed to the earth shaken under their feet, but those living in Plainfield, Connecticut are not. This had created some dramatic media coverage. Dr. Tyson’s power point presentation showed a map of Connecticut with red dots marking the areas of the current earthquakes. He then displayed the same map, with the similarly placed red dots, only this one dated the previous year. He did the same for the year prior to that until the audience saw the pattern. The swarms...
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...advantage of some very high-quality special effects to dramatize what it might be like if the Earth was to come to an abrupt end. The plot of the movie choose to focus in on the propaganda and conspiracies that many people actually believed to be true about the winter solstice of the year 2012. These conspirators believed that on December 21, 2012 the world as we know it would come to an end. Obviously now in the year 2013 we know that we have successfully survived this “catastrophic” event and it is safe to say these claims had/have no scientific merit behind them. The people who believed these claims prior to the date they feared so much thought that all the planets in our solar system would align, and that this planetary alignment would set forth a series of events that would result in the end of the world. They also concluded that a Mayan calendar would also be ending on this same date. If only the people who bought into these claims took the time to research their validity they would have been able to learn that planetary alignment of all the planets in our solar system has never been recorded. This information was stated and proven by NASA scientists, which was retrieved from http://www.nasa.gov/topics/earth/features/2012.html. In fact we have only recorded some planets aligning in our solar system at once but these planetary alignments have proven to have no negative impacts towards the Earth. To simply believe because of the...
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