Bottom Topography : Pacific Ocean & Indian Ocean | UPSC Geography Optional | Vimochana Edu

Bottom topography of Indian Ocean and Pacific Ocean for UPSC Geography Optional.
Trenches, ridges, plateaus, basins—complete 15-mark coverage with diagrams.
Bottom Topography of Indian & Pacific Ocean | UPSC Geography Optional | Oceanography | Vimochana Edu

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Hello Vimochana Family

This lecture is part of the Oceanography series for UPSC Geography Optional.
After covering Ocean Floor Configuration and basic concepts, this video focuses on a regional application — the Bottom Topography of the Atlantic Ocean, which is directly mentioned in the syllabus.

In this lecture, we cover Bottom Topography / Submarine Relief of the Indian Ocean and Pacific Ocean for UPSC Geography Optional (Paper-1 – Oceanography).

✅ What you’ll learn (with sketches/diagrams):

PACIFIC OCEAN: Active margins, major trenches (Mariana, Peru–Chile, Japan, Tonga), island arcs, East Pacific Rise, seamounts/guyots (Hess).
INDIAN OCEAN: Mixed margins, Central/SW/SE Indian ridges, Rodrigues Triple Junction, submarine plateaus (Kerguelen, Mascarene, Ninetyeast Ridge), basins (Arabian, Somali, Bay of Bengal), limited trenches (Java/Sunda, Andaman), hotspot theory (J. Tuzo Wilson).

✨ 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


connect with vimochana edu :- vimochanainstitute@gmail.com

00:00 - Intro
01:54 - Syllabus and PYQ context
13:00 - Bottom topography of pacific & Indian Ocean basics
18:24 - Pacific ocean bottom topography
44:33 - Pacific ocean bottom topography
01:01:16 - comparison and conclusion
01:02:45 - H.W. and outro

👉 Watch the full module here:

Previous Video :-    • Bottom Topography of Atlantic Ocean | Bath...  

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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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Simplified yet in-depth explanations

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