Category
Narrative Cartography
Tsunami created earthquakes
About the project
Map visualization of Tsunami created earthquakes reported from 1896 to 2021, try to connect the story with the deadliest Tsunamis reported from recent years. The intention behind the assignment is to familiarise QGIS with hands-on experience by creating a narrative map visualization.
Process
Trigger questions
Data collection and cleaning
The story structuring
Required map creation in QGIS
Trigger questions
What type of eartquake create Tsunamis?
Tsunami prone areas in the world and reason behind it?
How less dangerous seismic zones are effected by Tsunamis?
Data collection and cleaning
Data sources are mainly from Wickipedia and USGIS Earthquake catalog
+
_svg.png)
The story structuring
Earthquakes and Tsunamis (not includes volcanic eruptions and landslides).
World Overview
Timeline of data - 1896-2021
Visualize Map - Death, Magnitude, Epicenter.
Deadliest Tsunamis in the recent decade
Map visualization of the Tsunamis and impacted countries.
Conclusion
Includes the narration of Tsunami prone countries and the reason behind it.
Required map creation in QGIS
QGIS functions as geographic information system (GIS) software, allowing users to analyze and edit spatial information, in addition to composing and exporting graphical maps.
Final narration
What Magnitude in earthquakes will create damage?
It depends on other variables, such as the distance from the earthquake, what type of soil you are on, etc. That being said, damage does not usually occur until the earthquake magnitude reaches somewhere above 4 or 5.
.png)
Above 6.1Richter scale Magnitude will create severe damage in populated areas
The 2004 Indian Ocean earthquake and tsunami (also known as the Boxing Day Tsunami) on 26 December, with an epicentre off the west coast of northern Sumatra, Indonesia. It was an undersea megathrust earthquake that registered a magnitude of 9.1–9.3 Mw.
The 1960 Valdivia earthquake or the Great Chilean earthquake (Gran terremoto de Chile) on 22 May 1960 was the most powerful earthquake ever recorded.
6.1 and more Magnitude Earthquakes reported from 1896-2021
Earthquake Epicenter
8 and more Magnitude Earthquakes reported from 1896-2021
Earthquake Epicenter
What is Tsunami?
Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea. Out in the depths of the ocean, tsunami waves do not dramatically increase in height. But as the waves travel inland, they build up to higher and higher heights as the depth of the ocean decreases. The speed of tsunami waves depends on ocean depth rather than the distance from the source of the wave.
What magnitude will create a Tsunami?
Magnitudes below 6.5
Earthquakes of this magnitude are very unlikely to trigger a tsunami.
Magnitudes between 6.5 and 7.5
Earthquakes of this size do not usually produce destructive tsunamis. However, small sea level changes might be observed in the vicinity of the epicenter. Tsunamis capable of producing damage or casualties are rare in this magnitude range but have occurred due to secondary effects such as landslides or submarine slumps.
Magnitudes between 7.6 and 7.8
Earthquakes of this size might produce destructive tsunamis, especially near the epicenter. At greater distances, small sea level changes might be observed. Tsunamis capable of producing damage at great distances are rare in the magnitude range.
Magnitude 7.9 and greater
Destructive local tsunamis are possible near the epicenter, and significant sea-level changes and damage might occur in a broader region. Note that with a magnitude 9.0 earthquake, there is a possibility of an aftershock of magnitude 7.5 or greater.
Reported Tsunamis from 1896
%20map%20back.png)
Tsunamis are not created by deep sea earthquakes, the Tsunami created Earthquake epicenters are mainly in the shallow sea or near the coastal land areas.
Earthquake Epicenter
Japanese coastal areas are mostly affected by Tsunamis in recent decades.
Tectonic plate boundaries on shallow sea depth coastal areas are the main epicenters of Tsunamis.
Earthquake Epicenter
Boxing Day Tsunami - 2004
Less dangerous seismic zones of coastal areas of countries are also affected by Tsunamis. In 2004 The Boxing Day Tsunami the epicenter was on the west coast of northern Sumatra. Because of its high magnitude, it created long waves and struck the coastal areas of Indonesia, India,Srilanka and Thailand.One of the deadliest natural disasters in history.
Shake map of boxing Day Tsunami
Northern Sumatra
Thailand
Indian ocean
India
Srilanka
Indonesia
Earthquake Epicenter
Project is Work In progress and will add more in coming days