Oceans and Seas

State of the Climate in Asia 2024

The World Meteorological Organization’s State of the Climate in Asia 2024 report warns that the region is warming nearly twice as fast as the global average, driving more extreme weather and posing serious threats to lives, ecosystems, and economies. In 2024, Asia experienced its warmest or second warmest year on …

Radio signals confuse fishermen at sea

KOLKATA, 18 JULY: The state government has requested All India Radio (AIR) to undertake a survey to examine the transmission capacity of Kolkata-A-Channel, after reports that fishermen in the Bay of Bengal on the Indian side are receiving signals from a Bangladesh radio instead of the AIR. Such a survey …

Science And Technology - Briefs

HealthDirty truth If you stop your children from eating mud, read this. Craving for earth—geophagy—can be one of the natural ways to protect stomach against pathogens. After studying 480 reports and analysing theories that geophagy is driven by hunger and for nutrients in the soil like iron, zinc or calcium …

Elevated CO2 enhances Otolith growth in young fish

A large fraction of the carbon dioxide added to the atmosphere by human activity enters the sea, causing ocean acidification. We show that otoliths (aragonite ear bones) of young fish grown under high CO2 (low pH) conditions are larger than normal, contrary to expectation. We hypothesize that CO2 moves freely …

New antibiotic fished out of sea

Scientists Believe The Compound They Stumbled Upon Off The Rameswaram Coast Will Help Treat TB, HIV Chennai: For years, scientists at the Tuberculosis Research Centre (TRC) here have been digging in deserts and under the sea hoping to unearth chemical compounds that had the potential to be developed into drugs …

Clay mineral contintal amplifier for marine carbon sequestration in a greenhouse ocean

The majority of carbon sequestration at the Earth’s surface occurs in marine continental margin settings within fine-grained sediments whose mineral properties are a function of continental climatic conditions. We report very high mineral surface area (MSA) values of 300 and 570 m2 g in Late Cretaceous black shales from Ocean …

Sea’s toxic touch

IT is a neurotoxin that accumulates in marine organisms and can have serious implications on human health. The toxin, monomethylmercury, is of particular concern to people whose traditional diet consists of seafood. But the source of monomethylmercury in oceans has remained uncertain. It was till now suspected that industries were …

Mysterious deep-sea jets alter global climate

For the first time, scientists have discovered mysterious deep seat jets of water which cause anomalies in wind, rainfall and sea temperature across the tropical Atlantic. Past research has shown that the oceans impact climate in a multitude of ways, most notably with the ocean-atmosphere phenomena known as El Nino …

Response of the ocean mixed layer depth to global warming and its impact on primary production: a case for the North Pacific Ocean

This study investigates changes in the mixed layer depth (MLD) in the North Pacific Ocean in response to global warming and their impact on primary production by comparing outputs from 11 models of the coupled model intercomparison projects phase 3. The MLD in the 21st century decreases in most regions …

Seas could rise by 1.6m in 90 years

Oslo: Quickening climate change in the Arctic including a thaw of Greenland

Forecasting the rain ratio

Marine algae known as coccolithophores produce much of the ocean's calcium carbonate. A large survey reveals how these organisms' calcification processes and species distribution change in response to carbon dioxide levels.

Get swayed

For surfers who like high waves, time holds promise. Researchers from Swinburne University of Technology, Australia, collated satellite data of 23 years and found the wind speed over the ocean has increased substantially. They found that between 1985 and 2008, increased wind speed led to an increased wave height. The …

On the role of the Agulhas system in ocean circulation and climate

The Atlantic Ocean receives warm, saline water from the Indo-Pacific Ocean through Agulhas leakage around the southern tip of Africa. Recent findings suggest that Agulhas leakage is a crucial component of the climate system and that ongoing increases in leakage under anthropogenic warming could strengthen the Atlantic overturning circulation at …

Leak plugged, new N-crisis erupts

Japan Readies To Inject Nitrogen Into Reactor To Prevent Blast After Hydrogen Buildup Tokyo: Workers stopped a highly radioactive leak into the Pacific off Japan

When glacial giants roll over

The energy released by capsizing icebergs can be equal to that of small earthquakes — enough to create ocean waves of considerable magnitude. Should such 'glacial tsunamis' be added to the list of future global-warming hazards?

Sea radiation soars to 5m times legal limit

Japan Finds Fish With Taint, Sets New Food Norms Tokyo/Fukushima: Japan

Japan More radiation found in seawater near N-plant

As Japanese workers pumped out contaminated water into the Pacific Ocean from the quake-hit Fukushima nuclear facility, authorities on Tuesday said radioactive iodine several million times the legal limit was detected in seawater near the plant but insisted that it posed no major health risk. The plant's operator, Tokyo Electric …

Sea of trouble: Japan dumps toxic water into the Pacific

Makes Room For More Lethal Runoff Tokyo: Tokyo Electric Power Company began dumping over 11,000 tons of radioactive water into the Pacific Ocean from the Fukushima Daiichi nuclear plant on Monday, mostly to make room in storage containers for increasing amounts of far more contaminated runoff. The water, most of …

Japans N-worry grows as radiation spreads to sea

Radiation leaked into the sea from Japan's crippled nuclear plant, raising concern that seafood may become tainted, while the site

Ocean’s dramatic past

TOWARDS the end of the last Ice Age, 10,000-20,000 years ago, the global ocean circulation underwent a lot of changes. This circulation, called meridional overturning circulation (MOC), carries warm, saline surface water north to cooler regions. Now researchers from Cardiff University in the UK have revealed how the MOC in …

Rethinking the sea-ice tipping point

Summer sea-ice extent in the Arctic has decreased greatly during recent decades. Simulations of twenty-first-century climate suggest that the ice can recover from artificially imposed ice-free summer conditions within a couple of years.

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