Mppsc current affairs

🔆 How Earthquakes Cause Tsunamis

📍 Why in Focus?
A massive magnitude 8.8 earthquake struck off the coast of Russia’s Kamchatka Peninsula, triggering tsunami waves as high as 16 feet. This highlights the critical connection between earthquakes and tsunamis.

📍 Key Highlights:
✅ Tsunami Definition: A tsunami is a series of large ocean waves triggered by a sudden movement of water, often caused by an earthquake.
✅ Causes of Tsunami: Most tsunamis occur from underwater earthquakes or those near the coast that displace a large volume of water.
✅ Earthquake Depth: Shallow quakes (0-70 km deep) are more likely to cause tsunamis because they push the sea floor upward, displacing water.
✅ Tectonic Plate Movements: Earthquakes in subduction zones (plates moving under each other) cause vertical shifts in the sea floor, generating tsunami waves.
✅ Magnitude’s Role: Earthquakes with a magnitude of 7.0 or higher usually cause tsunamis. Stronger quakes (above 8.0) create more powerful waves.

📍 Challenges / Issues / Implications:
✅ Coastal Vulnerability: Regions near tectonic plate boundaries like the Kuril-Kamchatka Trench are at high risk for tsunami-causing earthquakes.
✅ Early Warning Systems: Need for improved tsunami early warning systems to prevent loss of life and property.

✅ Prelims Question (MCQ style):
Q. What type of earthquake is most likely to cause a tsunami?
A) Deep earthquakes (below 70 km)
B) Shallow earthquakes (0 to 70 km)
C) Earthquakes with horizontal movement
D) Earthquakes with low magnitude
Ans: B

✅ Mains Question:
Q. Discuss the relationship between earthquakes and tsunamis, and how the magnitude, depth, and type of earthquake influence the formation of tsunami waves.

✨ #EarthquakeTsunami #TectonicPlates #Geography #mains #prelims

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1.34K viewsAug 28 at 13:23

🔆 How Earthquakes Cause Tsunamis

📍 Why in Focus?
A massive magnitude 8.8 earthquake struck off the coast of Russia’s Kamchatka Peninsula, triggering tsunami waves as high as 16 feet. This highlights the critical connection between earthquakes and tsunamis.

📍 Key Highlights:
✅ Tsunami Definition: A tsunami is a series of large ocean waves triggered by a sudden movement of water, often caused by an earthquake.
✅ Causes of Tsunami: Most tsunamis occur from underwater earthquakes or those near the coast that displace a large volume of water.
✅ Earthquake Depth: Shallow quakes (0-70 km deep) are more likely to cause tsunamis because they push the sea floor upward, displacing water.
✅ Tectonic Plate Movements: Earthquakes in subduction zones (plates moving under each other) cause vertical shifts in the sea floor, generating tsunami waves.
✅ Magnitude’s Role: Earthquakes with a magnitude of 7.0 or higher usually cause tsunamis. Stronger quakes (above 8.0) create more powerful waves.

📍 Challenges / Issues / Implications:
✅ Coastal Vulnerability: Regions near tectonic plate boundaries like the Kuril-Kamchatka Trench are at high risk for tsunami-causing earthquakes.
✅ Early Warning Systems: Need for improved tsunami early warning systems to prevent loss of life and property.

✅ Prelims Question (MCQ style):
Q. What type of earthquake is most likely to cause a tsunami?
A) Deep earthquakes (below 70 km)
B) Shallow earthquakes (0 to 70 km)
C) Earthquakes with horizontal movement
D) Earthquakes with low magnitude
Ans: B

✅ Mains Question:
Q. Discuss the relationship between earthquakes and tsunamis, and how the magnitude, depth, and type of earthquake influence the formation of tsunami waves.

BY Mppsc current affairs