Do you know what earth quake is? ....I believe that every one of you know this popular yet terrific phenomenon often occurs in our lovely country Indonesia. This also shook Aceh through it's more dangerous than it - effect called Tsunami on 2004. Well, I would share little bit about this phenomenon - as I cite it from wikipedia org.
An earthquake (also known as a quake, tremor or temblor) is the result of a sudden release of energy in the Earth's crust that creates seismic waves. The seismicity or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time. Earthquakes are measured with a seismometer; a device which also records is known as a seismograph. The moment magnitude (or the related and mostly obsolete Richter magnitude) of an earthquake is conventionally reported, with magnitude 3 or lower earthquakes being mostly imperceptible and magnitude 7 causing serious damage over large areas. Intensity of shaking is measured on the modified Mercalli scale.
At the Earth's surface, earthquakes manifest themselves by shaking and sometimes displacing the ground. When a large earthquake epicenter is located offshore, the seabed sometimes suffers sufficient displacement to cause a tsunami. The shaking in earthquakes can also trigger landslides and occasionally volcanic activity.
In its most generic sense, the word earthquake is used to describe any seismic event—whether a natural phenomenon or an event caused by humans—that generates seismic waves. Earthquakes are caused mostly by rupture of geological faults, but also by volcanic activity, landslides, mine blasts, and nuclear tests. An earthquake's point of initial rupture is called its focus or hypocenter. The term epicenter refers to the point at ground level directly above the hypocenter
Thus an earthquake can be called as apocalypse "a terrific disaster" if it occurred with it's more dangerous than it - effects.
Well, I could finally thanks to you for sharing your comment about it. Anyway I would like you to discuss this following questions:
1. What is earthquake in your mind?
2. How does earthquake happen? (explain a simple process)
3. How should Indonesia prevent a fatal impact of earthquake when it happens?
4. Find and attach one or two links about earthquake disaster that ever happen in the world <put the link into your comment.
1. Earthquake is a natural disaster cause by volcanoes eruption, or the clash of the plates, or we call it tectonic eruption. Earthquake could be so destructive if it more than 7 Ritcher magnitude, and happened near the surface.
ReplyDelete2.Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing against each other, they stick a little. They don't just slide smoothly; the rocks catch on each other. The rocks are still pushing against each other, but not moving. After a while, the rocks break because of all the pressure that's built up. When the rocks break, the earthquake occurs. During the earthquake and afterward, the plates or blocks of rock start moving, and they continue to move until they get stuck again.(from : http://www.geo.mtu.edu/UPSeis/why.html)
3. In my opinion, we should provide an earthquake detection, so we could evacuate before it happen and the government should give an explanation how to do self evacuating, not only for people who live in big city that because they could search an information from internet, but also for people in remote area, so they also could evacuate theirself. And we also have to learn the technologies of anti-earthquake house, we could imitate it from Japan techonologies. so, with those move, i believe that when earthquake happens in Indonesia, we would get the fatal impact.
4.http://news.bbc.co.uk/2/hi/8540289.stm A massive earthquake has hit central Chile and killed at least 214 people, the interior minister says.
The 8.8 quake caused widespread damage, destroying buildings, bridges and roads in many areas. Electricity, water and phone lines were cut.
Chilean President Michele Bachelet said that altogether two million people had been affected.
http://en.wikipedia.org/wiki/2010_Haiti_earthquake
The 2010 Haiti earthquake was a catastrophic magnitude 7.0 Mw earthquake, with an epicentre near the town of Léogâne, approximately 25 km (16 miles) west of Port-au-Prince, Haiti's capital. The earthquake occurred at 16:53 local time (21:53 UTC) on Tuesday, 12 January 2010.[5][6] By 24 January, at least 52 aftershocks measuring 4.5 or greater had been recorded.[7] An estimated three million people were affected by the quake;[8] the Haitian government reported that an estimated 230,000 people had died, 300,000 had been injured and 1,000,000 made homeless.[9][10] They also estimated that 250,000 residences and 30,000 commercial buildings had collapsed or were severely damaged.[11]
Name : A Samudra
Absent : 1
its a disaster may be its the warnig from God..we should think about that..pray for our save to the God
ReplyDelete1. earthquake is a phenomenon of natural disasters that occur when two blocks of earth shifted from each other. earthquakes occur when the pressure is happening because the movement was already too big to be on stand by these tectonic plates. The process of energy release in the form of elastic waves called seismic or earthquake waves that reach the earth's surface and cause vibration and damage to objects or structures on the surface of the earth.
ReplyDelete2. Causes Earthquake
a.Process due to tectonic movement of the skin / plate earth
b. The fault in the earth's surface
c. Geomorphology movement locally, for example, occurs ruins soil
d. Volcano-activity
e. Nuclear-explosion
The mechanism of destruction due to earthquake vibration energy dirambatkan to all parts of the earth. On the surface of the earth, the vibrations can cause damage and collapse of buildings so as to cause casualties. Tremors can also trigger landslides, rock debris, and damage to other land damage settlements. Earthquakes also cause catastrophic follow-up of fire, industrial and transportation accidents and flooding caused the collapse of dams or other retaining embankments.
3. I think to avoid the danger of earthquakes we have to do the troubleshooting tips below:
a. houses or buildings in the vicinity of the earthquake-prone areas have been built with a vibration-resistant construction / quake.
b. Education and counseling to the public about earthquake dangers and ways of escape in case of earthquakes.
4. 1. http://id.wikipedia.org/wiki/Gempa_bumi_Samudra_Hindia_2004
2. http://news.okezone.com/read/2010/11/14/340/393207/340/gempa-mentawai-patahan-siberut-masih-simpan-energi
by waenah alfiana
Well, can I just following samudra's opinion? @@
ReplyDelete1. The first time I felt the earthquake was the last earthquake happened in indramayu (I forgot the time), I was playing games in the net cafe. When I was enjoying the war, suddenly my computer was shaking like a wave. I thought, "Huh? How could my skills shaking the computer? It should be only shaking the screen."
A few moments later someone told me to come out. Then I realized it was a real earthquake. It feels like as if the earth surface become pliable and stretchy.
The first thing I make sure is the wind. Fortunately there are gusts of wind which means the possibility of tsunamis is small.
Well, it's quiet a silly experience for me.
2. When the underground or undersea plaque (rock?) suddenly breaks into some parts, there will be some area which will be raised or buckled down or even cracked into parts. Then, earth surface will ‘dancing’ wildly until the plaque stop moving. Earthquake which sourced from undersea has possibility of tsunami. it's frightened.
3. First, I think we should be thankful to our God over all we got, so that we won't be punished by the God. Then, we should routinely do some evacuating simulation. and would be better if we can using anti-earthquake house. Hm. I dunno what's the name. Not to corrupt the materials when builds a building is also a way to reduce the damage of earthquake.
4. The largest earthquake since 1900 http://earthquake.usgs.gov/earthquakes/world/10_largest_world.php
History of Indonesia earthquake http://www.moreindonesia.com/indonesia-earthquake-history-earthquake-in-indonesia/
Posted by Shinta Ayu P.P.D (19) - XII Acceleration
earthquake is the event where Earth's plates crashing each other resulting in an earthquake. already many very large earthquake strength.
ReplyDeleteREKA GUSTAMALA said:
ReplyDelete1. earthquakes is natural disasters that very dangerous, and could happen anywhere. earthquake could occur because the earth's shifting plates called tectonic earthquakes and some are caused by magma activity called volcanic earthquakes.
earthquakes can also cause a tsunami if it occurs at sea and its strength is quite large.
2.Most earthquakes result from the release of energy generated by the pressure exerted by a moving plate. The longer the pressure was becoming enlarged and eventually reach the state where the pressure can not be arrested again by the edge of plate. That's when an earthquake will occur
3.-if in an earthquake we are at home, we must get out or hide under the table.
-if necessary we have to make earthquake-resistant houses.
4. http://id.wikipedia.org/wiki/Gempa_bumi
http://www.voanews.com/indonesian/news/a-32-2010-02-27-voa12-86256412.html
http://www.antaranews.com/berita/1263452235/gempa-bumi-memukul-balik-pencapaian-haiti
Name; REKA GUSTAMALA (15)
Class ; XII-ACCEL
1. An earthquake is one of natural phenomena which happens on earth. It is caused by energy which is released and shakes the land. It can cause many damages in place where it happens.
ReplyDelete2. The causes of the earthquake are tectonic process, activity of fault on land, geomorfological movement, volcanic mount activity, and nuclear explosion. The power of earthquake which is caused by volcanic mount activity is less than caused by the others. The close ocean floor has bigger mass when it slams against the floor continent in pounding zone (subduction) and will move down. That movement will slow up because of the friction from lithosphere. It causes accumulation of energy in subduction zone and fault zone and pressure, attraction, and fricative happen there. When the elasticity limit of the floor is full, so the fault of stone will happens and the energy will be free suddenly. This process makes the particles to move to all the directions. This is called the waves of the earthquake.
3. How to prevent a fatal impact of earthquake:
a) Before the earthquake happens:
• The main key is we know what the earthquake is.
• Don’t build the building in unsafe place where the earthquake often happens.
• Make the building which is earthquakeable.
• Know the place around us so when the earthquake happens, the materials don’t fall on us.
b) When the earthquake happens:
• If we are in a building, keep our head and our body safe (ex: hiding under a table).
• If we are not in a building, it will better if we are not near a building (ex: house, tree, electrical pillar, etc) and pay attention to the land where we’re standing on.
• If we’re driving, go out from the vehicle.
• If we’re on a beach, go far away from the beach to keep ourselves safe from the tsunami.
• If we’re on a mountain range, go far away from the place where the landslide is likely to happen.
c) After the earthquake happens:
• Go out from the building immediately if we are in a building.
• Investigate around us and go to the safe place.
• Don’t go to the building.
• Don’t walk around earthquake area to avoid another earthquake.
• Help other person.
4. http://www.voanews.com/indonesian/news/a-32-2010-02-27-voa12-86256412.html
(Gempa Bumi Dahsyat di Chili Tewaskan 85, Timbulkan Tsunami
http://nusantaranews.wordpress.com/2010/04/07/gempa-bumi-7-2-sr-aceh/
(Gempa Bumi 7.2 SR Aceh dan Tuhan yang Murka)
http://id.wikipedia.org/wiki/Gempa_bumi_Kepulauan_Mentawai_2010
Gempa bumi Kepulauan Mentawai 2010
Name: Zanne S.P
Class: XII Acc
Absent: 23