Group 2 EEW System

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by Seohyun (Elly) Koo4 views·Updated Apr 3, 2022
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  1. This is all about earthquake early warning systems E. W.
  2. Systems and about how they are used in modern day
  3. unpredicted natural disasters specifically earthquakes.
  4. The heart shaking of the upper layer of
  5. the earth that is active which creates faults.
  6. People can measure an earthquake with a
  7. seismograph but not really predicted so much.
  8. So the E. W. System comes in pretty handy and E. W.
  9. System detects the earthquake's epicenter and sends
  10. an alert to people near the epicenter.
  11. These few seconds can save lives knowing when the greatest people hunt
  12. and let people know to take action when needed.
  13. The system was developed by Japan in 2007 but Tom Hayden
  14. had a clear idea in 1985 in the usgs organization.
  15. Since then it got really popular in different countries.
  16. How does it work? And E.
  17. Dudley system works by identifying the p wave of
  18. an earthquake that has struck and using the P.
  19. Way to estimate the duration magnitude in the area of the S.
  20. Wave which is much stronger than the P waves.
  21. P waves are weaker but are much faster than S. Ways
  22. which are more harmful but slower.
  23. The P waves trigger a signal from the location of the epicenter
  24. music signal to send to the data processing center the newfound data of the P wave.
  25. This new information about the earthquake issues
  26. to learn people about the upcoming earthquake.
  27. As a phone text message for convenience.
  28. The main purpose of this fancy E. W.
  29. System is not to just use a lot of
  30. money but to detect earthquakes and earlier the public
  31. they measure the earthquake using a seismograph again and send a
  32. notification to the people around the area near the epicenter.
  33. The notification shows intensity ground motion to re up shaking
  34. affect specific location of the earthquake distance and magnitude.
  35. The E. W.
  36. System skips offense notice to the public and gives time to take precautions.
  37. So you're stopping public transportation a few seconds to prepare if you're
  38. close to the earthquake and if you can't evacuate the area,
  39. let's talk more about the E.
  40. W. System
  41. earthquakes happen and we can stop them again
  42. and they are hard to predict. However, the E. W.
  43. System helps us to save more lives and take needed action
  44. such as the earthquake that happened this year in March 16th 2022. In eastern Japan.
  45. Japan has a population of 125.7 million people with the top
  46. but the topography having many mountains, Mount E. G, coral reefs and is
  47. In the coastline. Japan is prone to earthquakes
  48. and 18.5% of the earthquakes happen in Japan,
  49. which may be the reason why they try to invent something like the E.
  50. W. system.
  51. They are located in the certain specific mobile belts known as the ring of fire.
  52. The magnitude of this earthquake is 7.3.
  53. The epicenter of the earthquake was located in 89
  54. kilometers away from the massive 2011 Tohoku earthquake.
  55. 344 million of the 344 schools received minor
  56. wall damage from the impact of the earthquake.
  57. While 15 schools were completely destroyed from the earthquake damages,
  58. several homes,
  59. several homes, exterior walls were damaged.
  60. However, as Japan experienced many earthquakes in the past,
  61. many homes were prone to taking massive amounts of damage.
  62. Power outrages
  63. were experienced throughout Fukushima with more than 2.2 million houses
  64. left without electricity and one metropolis area left without electricity
  65. accidents were caused by transit transportation that left
  66. 96 passengers no way out of the train.
  67. In addition 100 m crap
  68. was made by the accident in the middle of the railway.
  69. Even with all this damage,
  70. the notification was sent out 9.6 seconds after detecting ground motion
  71. And 11:36.55 pm
  72. and saved lives.
  73. People around the coastline at epicenter were ordered to
  74. evacuate immediately and the public transportations were held up.
  75. A total of 1,961 homes were ordered to be evacuated from the area thankfully a total
  76. of 6820 people were safely able to evacuate the area and there were four deaths.
  77. She
  78. Oh Maki created seven shelters where the evacuees
  79. were placed until the damage was restored.
  80. The damage alone costed them from 100 million to $1
  81. billion.
  82. There is all the good stuff but there are
  83. some limitations along with the good stuff too.
  84. No,
  85. all these great things happen due to the E. W. System.
  86. However, there are some drawbacks and limitations to the E. W. System.
  87. Considering that it is man made and we make mistakes.
  88. It is economically unfriendly to the west coast of the US spent $120
  89. million to cover the West Coast and spend $16.1 million a year.
  90. Countries like Japan invested about $1 billion dollars on developing the project.
  91. But is it actually worth the cost?
  92. There can be,
  93. there can be false false alarms that can make
  94. people do unnecessary necessary actions in the wrong time.
  95. It is also a very delicate machine which makes it harder to put it in the ground.
  96. We're drilling a hole and putting it in
  97. and it could
  98. could break in the ground due to the waves of the earthquake
  99. which would cost more effort. Time and money.
  100. Time equals money. An example is that on
  101. March 11th 2011 2 46 pm.
  102. An earthquake was a magnitude of 9.1 NATO group, the northeastern part of Honshu.
  103. Normally there
  104. normally for earthquakes there E. W. System was supposed to be active and alert.
  105. The p waves,
  106. however,
  107. failed to do so as the p waves caused by the
  108. earthquake was borderline too weak to cause a mass destruction.
  109. The E. W.
  110. The system couldn't tell when to kick in and when they tried to alarm the people,
  111. they were too late.
  112. This inevitable failure to alert the
  113. citizens about the upcoming earthquake resulted
  114. in more than 1 15,000 deaths and over $200,200 billion of damage.
  115. Another example would be an earthquake in Indonesia.
  116. It happened on september 28 2018 and solo. Let's see at 603 local time.
  117. The earthquake magnitude 7.5 magnitude.
  118. When the alert was sent out, it was 30 minutes after the previous
  119. three with no other warnings in advance
  120. Without the system, 2004 people were killed due to the earthquake
  121. when the warning was sent out to the public.
  122. It was nonsense to everyone and some got repeated warnings.
  123. The quake destroyed the power systems in some
  124. areas and they did not get the notification
  125. and for those who are able to get the notification,
  126. the warning sent out inaccurate data and underestimated earthquake.
  127. The E. W.
  128. System both houses benefits and drawbacks,
  129. predicting earthquakes and saving lives but extremely
  130. expensive that no one wants to really
  131. pay for detecting ground motion, processing the data,
  132. alerting people having people saved and hurt and considering
  133. that there are false alarms in the system.
  134. This is what the East W. System can do and then
  135. happen to do in history Further on As technology develops,
  136. we hope that one day we might be able to fully protect and prepare for earthquakes.
  137. Here are some links that we used in order to create this presentation.
  138. That was all we prepared about the e w system.