Moon wobble: It is a regular oscillation that humans have known about for centuries. It is one of many factors that can either exacerbate rising sea levels or counteract them, alongside other variables like weather and geography. Why does the moon wobble? The moon revolves around the Earth about once a month, and that orbit is a …
Indian Ocean Dipole: The Indian Ocean Dipole (IOD) is defined by the difference in sea surface temperature between two areas (or poles, hence a dipole) – a western pole in the Arabian Sea (western Indian Ocean) and an eastern pole in the eastern Indian Ocean south of Indonesia. IOD develops in the equatorial region of Indian Ocean from April to May peaking in October. …
Bay of Bengal: It is concave or shallow due to which when strong winds push water, it gets concentrated as a storm. It is shaped like a trough that makes it more hospitable for storms to gain force. High sea surface temperature makes matters more worse in the Bay triggering the intensity of the storms. It gets more rainfall with sluggish …
Bay of Bengal vs Arabian Sea : Cyclones – UPSC Prelims Read More »
Cyclone Yaas: Cyclone Yaas is a Tropical Cyclone. It has been named by Oman. Yaas means a tree bearing fragrant flowers. Cyclone Yaas is the first cyclonic storm to develop over the Bay of Bengal in 2021. Cyclone Yaas crossed the northern Odisha coast around 20 km south of Balasore at its peak intensity as a very severe …
A-76 Iceberg: It is world’s largest existing iceberg found in Antarctica. A-76 Iceber has been spotted in the satellite images captured by the European Space Agency’s Copernicus Sentinel-1 mission. Formation: The iceberg has been formed after it broke away from Antarctica’s Ronne Ice Shelf. It is now floating freely in the Weddell Sea, a large bay in western …
Cyclone Tauktae: Cyclone ‘Tauktae‘ name was suggested by Myanmar. Tauktae means a highly vocal lizard gecko. This cyclone has been classified as a very severe cyclonic storm (VSCS). The Cyclone developed in the Arabian Sea. Cyclone Tauktae is the first cyclonic storm along the Indian coast in the year 2021. This will also be the fourth cyclone in consecutive years to …
What is Volcano? A volcano is an eruption in the earth’s crust through which the lava, volcanic ash and gases escape to release pressure. Why Volcanic Eruption takes place? Magma is a thick flowing substance. It is formed during the melting of Earth’s crust and Mantle. Volcanic eruption takes place when magma rises to the surface. As …
The Gulf Stream, together with its northern extension the North Atlantic Drift, is a warm and swift Atlantic ocean current that originates in the Gulf of Mexicoand stretches to the tip of Florida, and follows the eastern coastlines of the United States and Newfoundland before crossing the Atlantic Ocean as the North Atlantic Current. The Gulf Stream system conveys warm surface water from equator to the …
Western Disturbances: Western Disturbance (WD), labelled as an extra-tropical storm originating in the Mediterranean, is an area of low pressure that brings sudden showers, snow and fog in northwest India. The disturbance travels from the “western” to the eastern direction. These travel eastwards on high-altitude westerly jet streams – massive ribbons of fast winds traversing the earth from west to east. Disturbance means an area of …
Malayali is a tribal group from the Eastern Ghats in North Tamil Nadu. They are usually hill farmers and they cultivate different types of millet. Malayalis originally belonged to the Vellala caste of cultivators and emigrated from the sacred city of Kanchi to the hills about ten generation ago, when Muhammadan rule was dominant in …