Let’s say you are standing on a beach, feeling the sand under your feet. Now, picture the vast ocean stretching before you. What lies beneath those endless waters? As we dive deeper, we enter a world where the ocean floor is covered with a variety of materials—remnants of rocks, marine life, and even microscopic organisms….
Introduction Let’s explore the Pacific Ocean, the grandest water body on Earth, covering nearly one-third of the planet’s surface. Imagine yourself soaring over this vast expanse, stretching 16,000 km from the bustling shores of Asia to the rugged coasts of the Americas, and spanning 14,800 km from the icy Bering Strait in the north to…
In Köppen’s classification, the cold climates are marked with the letter E. These are the regions near the poles—beyond the reach of warm currents, monsoon winds, or temperate cyclones. Here, the controlling factor is extreme cold. Now, within cold climates, we study two main types: Let’s look at them one by one Tundra Climate (ET)…
Cool Temperate Eastern Marine Climate (Dfb: D – cool temperate, f – no dry season, b – warm summer) Basic Idea: What is this Climate? Think of this as a “middle climate” — not as mild as Britain’s maritime climate, and not as harsh as the Siberian taiga climate.👉 It is a mix of maritime…
Mediterranean Climate (Cs: C – Warm Temperate, s – Dry summer) Introduction to Mediterranean Climate When we hear the word Mediterranean, we naturally think of the blue waters of the Mediterranean Sea, olive trees, vineyards, and sunny resorts. But in climatology, “Mediterranean Climate” is not confined to Europe; it’s a global climatic type found in…
Introduction to Dry Climates (B-type) When we talk about Köppen’s classification, the letter B is reserved for Dry climates. Here, the most important feature is not temperature, but water balance.👉 The defining criterion is: So, even if rainfall occurs, it is so little compared to evaporation that the land remains arid. Under this category, we…
Introduction – Where do we find Tropical Humid Climates? When we talk about tropical humid climates, immediately two keywords should come to our mind — “tropics” and “humidity.” So the overall character becomes: hot + humid + high rainfall + low annual temperature range. Now, Köppen divided the tropical climates into three types: First, we…
2004 Indian Ocean Tsunami Background of the Disaster 👉 This was one of the deadliest natural disasters in modern history. Plate Tectonics – The Trigger 👉 Mechanism = textbook example of subduction zone tsunami. Tsunami Waves – The Deadly Journey Shifts in Geography This part is fascinating — the disaster was so massive it altered…
Tsunami – The Concept The word “Tsunami” comes from Japanese, meaning “Harbour Wave.”Now, notice something interesting: Sometimes, people call it a “tidal wave.” But this is misleading because tides are caused by the gravitational pull of the Moon and the Sun, whereas tsunamis have nothing to do with tides. Causes of Tsunamis Think of it…
Earthquake Zones of India 👉 Seismic Zonation Map India has released a Seismic Zonation Map under the updated Earthquake Design Code (BIS, 2025). The classification is based on faults, maximum likely events, attenuation, tectonics, lithology, and other geological parameters. Details of New Zonation India’s Earthquake Vulnerability Implications of New Map Earthquakes in Delhi–NCR Region 👉…
