Ocean Floor Basics | Submarine Canyons, Hypsographic Curve | Oceanography | UPSC Geography Optional

Oceanography PYQ doubts for UPSC Geography Optional: Submarine Canyons, Hypsographic Curve & Water Layers above Abyssal Plain.
Diagram-based, exam-ready explanation.

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Hello Vimochana Family

This is Part-2 (Basics) of the Ocean Floor series.

✅ Topics covered in this lecture:

✅ Covered in this video:
• Submarine canyons: definition, origin (turbidity currents), examples, diagram
• Hypsographic curve: bimodal nature, physiographic units, permanency comment (PYQ)
• Ocean water layers above abyssal plain: mixed layer–thermocline–deep ocean, 20-sec diagram
• Answer-writing framework for short note/10–15 marks

✨ This lecture is NOT integrated with GS/Prelims – it is purely Geography Optional level, with thinkers, keywords, diagrams, and exam-ready notes.

📌 What you’ll gain:
Clear concepts with flowcharts, maps, and keywords
Integration of Paper-1 with Paper-2
Content you can directly reproduce in the Mains exam


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00:00 - Intro
01:57 - Syllabus and PYQ context
02:58 - Submarine Canyons
24:49 - Hypsographic Curve (diagram + interpretation)
46:00 - Water Layers above Abyssal Plain (Vertical Stratification)
01:09:10 - Ocean floor flowchart and Indian context
01:11:23 - How to write answers (format )
01:13:09 - H.W. and outro

👉 Watch the full module here:

Previous Video :-    • Oceanography Basics | Ocean Floor Configur...  

Oceanography Geography module :    • MODULE 4 : Oceanography  

Population Geography module -    • Module 7 - Population Geography  

Perspective Module:    • MODULE 6 : Perspectives in human Geography  

Climatology Module – climatology :    • MODULE 3 : CLIMATOLOGY  

Geomorphology Module :    • Module 2: Geomorphology | Geography option...  


UPSC CSE 2026 Focus
This lecture is fully aligned with UPSC Mains (Geography Optional) syllabus. No integration with GS/Prelims—only pure optional material, exam notes, and past year questions.

🎯 Perfect for:
UPSC CSE aspirants with Geography Optional
Students preparing Oceanography module in detail

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