There will be no catastrophe from global warming. Free Technical Library News

NEWS OF SCIENCE AND TECHNOLOGY, NOVELTY IN ELECTRONICS
Free technical library / timeline

There will be no catastrophe from global warming

20.03.2012

Studying the rocks on the shores of Bermuda and the Bahamas, Columbia University scientists Maureen Raimo and Jerry Mitrovica managed to significantly underestimate one of the dangers of current global warming associated with melting ice and, accordingly, rising sea levels.

It is well known that ocean levels are now steadily rising. Since 1880, it has grown by 21 centimeters, and today it adds about 2,5 centimeters every ten years. However, no one really knows what will happen, say, by the year 2100, regarding which forecasts are mainly made. Until now, a variety of figures have been called on this score, sometimes simply catastrophic. The coastal cliffs of Bermuda and the Bahamas are interesting primarily because they are imprinted with traces of a very strong global warming that happened 400 thousand years ago. A layer of sedimentary bottom rocks is located there 21 meters above the current sea level. From this, in 1999, it was concluded that it was to such a terrible height that the ocean rose at that time due to the melting of polar ice.

Reimo and Mitrovica tweaked this script. They claim that the tectonic plates over which ice accumulates sink under its weight, rising, respectively, along the edges, and the islands located on these edges rise with them. During warming, the ice melts, their load no longer presses on the plates, and they return to their places, and the grown islands sink again. The Bahamas and Bermuda are exactly where the rise and fall of the plates occurs due to the ice accumulated at the pole. Given this effect, climatologists have calculated that in fact the ocean level 400 thousand years ago rose not by 20, but by 13-16 meters.

This amendment has far-reaching implications. Such a rise, according to the calculations of Raimo and Mitrovica, meant that during this crazy warming, the main water contribution was made by the melting ice of Greenland and West Antarctica, while the contribution of East Antarctica, where there is eight times more ice, turned out to be very insignificant.

Scientists are well aware of how sensitive West Antarctica and Greenland are to climate change, but they know very little about East Antarctica, which is why their forecasts differ so much. Now we can safely say that the ice of East Antarctica will not take part in the current global warming, which means that the most catastrophic scenarios can be discarded. Of course, sea level rise at the end of the century will not seem like paradise to residents of coastal cities, but water Armageddons should not be expected either.

<< Back: Everyone can develop echolocation in themselves 20.03.2012

>> Forward: Green energy will cause a crisis of rare metals 19.03.2012

Latest news of science and technology, new electronics:

Alcohol content of warm beer 07.05.2024

Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>

Major risk factor for gambling addiction 07.05.2024

Computer games are becoming an increasingly popular form of entertainment among teenagers, but the associated risk of gaming addiction remains a significant problem. American scientists conducted a study to determine the main factors contributing to this addiction and offer recommendations for its prevention. Over the course of six years, 385 teenagers were followed to find out what factors may predispose them to gambling addiction. The results showed that 90% of study participants were not at risk of addiction, while 10% became gambling addicts. It turned out that the key factor in the onset of gambling addiction is a low level of prosocial behavior. Teenagers with a low level of prosocial behavior do not show interest in the help and support of others, which can lead to a loss of contact with the real world and a deepening dependence on virtual reality offered by computer games. Based on these results, scientists ... >>

Traffic noise delays the growth of chicks 06.05.2024

The sounds that surround us in modern cities are becoming increasingly piercing. However, few people think about how this noise affects the animal world, especially such delicate creatures as chicks that have not yet hatched from their eggs. Recent research is shedding light on this issue, indicating serious consequences for their development and survival. Scientists have found that exposure of zebra diamondback chicks to traffic noise can cause serious disruption to their development. Experiments have shown that noise pollution can significantly delay their hatching, and those chicks that do emerge face a number of health-promoting problems. The researchers also found that the negative effects of noise pollution extend into the adult birds. Reduced chances of reproduction and decreased fertility indicate the long-term effects that traffic noise has on wildlife. The study results highlight the need ... >>

Wireless speaker Samsung Music Frame HW-LS60D 06.05.2024

In the world of modern audio technology, manufacturers strive not only for impeccable sound quality, but also for combining functionality with aesthetics. One of the latest innovative steps in this direction is the new Samsung Music Frame HW-LS60D wireless speaker system, presented at the 2024 World of Samsung event. The Samsung HW-LS60D is more than just a speaker system, it's the art of frame-style sound. The combination of a 6-speaker system with Dolby Atmos support and a stylish photo frame design makes this product the perfect addition to any interior. The new Samsung Music Frame features advanced technologies including Adaptive Audio that delivers clear dialogue at any volume level, and automatic room optimization for rich audio reproduction. With support for Spotify, Tidal Hi-Fi and Bluetooth 5.2 connections, as well as smart assistant integration, this speaker is ready to satisfy your ... >>

A New Way to Control and Manipulate Optical Signals 05.05.2024

The modern world of science and technology is developing rapidly, and every day new methods and technologies appear that open up new prospects for us in various fields. One such innovation is the development by German scientists of a new way to control optical signals, which could lead to significant progress in the field of photonics. Recent research has allowed German scientists to create a tunable waveplate inside a fused silica waveguide. This method, based on the use of a liquid crystal layer, allows one to effectively change the polarization of light passing through a waveguide. This technological breakthrough opens up new prospects for the development of compact and efficient photonic devices capable of processing large volumes of data. The electro-optical control of polarization provided by the new method could provide the basis for a new class of integrated photonic devices. This opens up great opportunities for ... >>

Random news from the Archive

Canon Industrial CMOS Sensors with Global Shutter 03.10.2018

Automation, robotics and AI platforms require new machine vision solutions. In particular, image sensors must support the global shutter function to avoid distortion when capturing fast moving objects. The global shutter function is no longer a luxury and has become a necessity.

The Japanese company Canon has announced that from October 5 will begin shipping two modifications of 3-megapixel CMOS sensors with global shutter support. The 5U3MGXSMAA sensors are monochrome filter solutions, while the 5U3,4MGXSCAA sensors support color (RGB) image capture. The pixel dimensions are the same in each case and are 2562 µm horizontally and vertically. The effective resolution of the sensors is 2056 x 120 pixels. The shooting speed in full-frame mode reaches 8 frames per second. The sensor can be divided into XNUMX shooting sectors, which allows you to increase the frame rate for a particular zone.

Canon is confident that the new global shutter sensors will find application in production lines with automatic product quality analysis. Sensors, by the way, can change the orientation of the shooting without changing their position in space on an external command. Another use for the new sensors could be to equip drones with better cameras. Despite the global shutter function and high frame rate, sensor consumption remains low and does not require additional cooling solutions. In other words, battery power will not be an obstacle to installing cameras with Canon's new sensors on drones.

See full Archive of science and technology news, new electronics

All languages of this page

Home page | Library | Articles | Website map | Site Reviews