How can NISAR provide valuable information for understanding the relationship between fluid injection and earthquake?
Show answer & explanation
Correct answer: A
Explanation
Answer: By tracking changes in ground surface elevation associated with pumping and injection
Explanation: The NISAR (NASA–ISRO Synthetic Aperture Radar) mission uses advanced radar imaging to detect very small changes in the Earth’s surface. When fluids (like water, oil, or wastewater) are injected into or extracted from underground, they can cause subtle ground deformation (uplift or subsidence). NISAR can precisely measure these surface elevation changes, helping scientists understand how such fluid movements may trigger or influence earthquakes.
Additional Key Facts:
NISAR is a joint mission between NASA and ISRO.
It uses dual-frequency radar (L-band and S-band).
It can detect ground movement as small as a few millimeters.
Helps in studying earthquakes, landslides, volcanoes, and glacier movements.
It will provide global data with high revisit frequency for Earth monitoring.
Potential Exam-Oriented Questions & Answers:
Question: How does fluid injection relate to earthquakes?
Answer: It can alter underground pressure and trigger seismic activity.
Question: Which two agencies are collaborating for NISAR?
Answer: NASA and ISRO.