Japan Issues Tsunami Warnings After Powerful 7.6 Magnitude Earthquake Strikes
A powerful 7.6 magnitude earthquake struck Japan, triggering tsunami warnings and evacuations along its western coast.
Photo by Rithik Hansda
त्वरित संशोधन
A 7.6 magnitude earthquake struck Japan.
Major tsunami warnings were issued for western coastal areas.
Japan Meteorological Agency (JMA) warned of waves up to 5 meters.
Residents were urged to evacuate to higher ground.
महत्वपूर्ण तिथियां
महत्वपूर्ण संख्याएं
दृश्य सामग्री
7.6 Magnitude Earthquake and Tsunami Warning in Japan (Jan 2024)
This map illustrates the epicenter of the powerful 7.6 magnitude earthquake off Japan's western coast and the regions under major tsunami warnings. It highlights Japan's vulnerability to seismic activity and its advanced early warning systems.
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परीक्षा के दृष्टिकोण
Geographical location and plate tectonics (Pacific Ring of Fire, subduction zones).
Mechanism of earthquakes and tsunami generation.
Disaster management frameworks (national and international, e.g., Sendai Framework).
Technological advancements in early warning systems and seismic engineering.
Vulnerability and resilience of coastal regions to natural disasters.
Lessons from international best practices in disaster risk reduction for India.
विस्तृत सारांश देखें
सारांश
Japan experienced a powerful 7.6 magnitude earthquake, prompting authorities to issue major tsunami warnings for its western coastal regions. The Japan Meteorological Agency (JMA) warned of potential waves up to 5 meters high, urging residents to evacuate immediately to higher ground.
This event highlights Japan's advanced disaster preparedness and early warning systems, which are crucial for mitigating the impact of such natural calamities. The incident serves as a reminder of the country's vulnerability to seismic activity and its robust strategies for disaster risk reduction.
पृष्ठभूमि
नवीनतम घटनाक्रम
बहुविकल्पीय प्रश्न (MCQ)
1. Consider the following statements regarding tsunamis and seismic activity: 1. Tsunamis are typically generated by large-scale underwater disturbances, most commonly submarine earthquakes. 2. Japan's high seismic activity is primarily due to its location at the convergence of four major tectonic plates. 3. The destructive power of a tsunami wave is mainly attributed to its extremely high speed in shallow coastal waters, rather than its volume. Which of the statements given above is/are correct?
- A.1 and 2 only
- B.2 and 3 only
- C.1 and 3 only
- D.1, 2 and 3
उत्तर देखें
सही उत्तर: A
Statement 1 is correct: Tsunamis are primarily caused by large underwater disturbances like earthquakes, volcanic eruptions, or landslides. Statement 2 is correct: Japan is located at the intersection of the Pacific, Philippine Sea, Eurasian, and North American plates, making it highly seismically active. Statement 3 is incorrect: While tsunamis slow down in shallow water, their height and destructive power increase dramatically due to the compression of their immense volume of water, not primarily their speed in shallow water (which actually decreases). Their speed is very high in the deep ocean.
2. With reference to seismic waves and disaster management, consider the following statements: I. P-waves (Primary waves) are the fastest seismic waves and can travel through solids, liquids, and gases. II. The Moment Magnitude Scale (MMS) is preferred over the Richter Scale for large earthquakes as it more accurately measures the total energy released. III. The Sendai Framework for Disaster Risk Reduction (2015-2030) emphasizes a shift from disaster response to proactive disaster risk reduction. How many of the statements given above are correct?
- A.Only one
- B.Only two
- C.All three
- D.None
उत्तर देखें
सही उत्तर: C
Statement I is correct: P-waves are compressional waves, the fastest seismic waves, and can propagate through all states of matter. Statement II is correct: The Moment Magnitude Scale (MMS) is a more robust and accurate measure of earthquake size, especially for large events, as it is based on the seismic moment, which is related to the physical properties of the fault rupture. The Richter scale saturates for very large earthquakes. Statement III is correct: The Sendai Framework, adopted in 2015, marks a significant shift from managing disasters after they occur to proactively managing disaster risk, focusing on prevention, mitigation, and preparedness.
3. Which of the following statements is NOT correct regarding India's disaster management framework and international commitments?
- A.The National Disaster Management Authority (NDMA) is headed by the Prime Minister of India.
- B.The National Disaster Response Force (NDRF) operates under the administrative control of the Ministry of Home Affairs.
- C.India is a signatory to the Sendai Framework for Disaster Risk Reduction and has adopted its principles.
- D.The Disaster Management Act, 2005, mandates the establishment of District Disaster Management Authorities (DDMAs) chaired by the Chief Minister of the respective state.
उत्तर देखें
सही उत्तर: D
Statement A is correct: The NDMA is indeed headed by the Prime Minister. Statement B is correct: NDRF functions under the Ministry of Home Affairs. Statement C is correct: India is a signatory to the Sendai Framework and has been actively working towards its implementation. Statement D is incorrect: While the Disaster Management Act, 2005, mandates DDMAs, they are chaired by the District Magistrate/Collector/Deputy Commissioner of the district, not the Chief Minister. The Chief Minister heads the State Disaster Management Authority (SDMA).