Scientists have created a new map of the seabed. It turned out to be so detailed that it seems as if someone evaporated all the water of the oceans and took a corresponding photograph. But in fact, amazing accuracy was achieved using satellite data. The new sea depth map is the highest resolution gravity model ever created for the oceans and will help explorers for years to come.
An international team led by oceanographer David Sandwell of the Scripps Institution of Oceanography in La Jolla (California, USA) created a map using data from two satellites: Cryosat-2 of the European Space Agency and Jason-1. joint project of the American space agency NASA and the French space agency CNES.
Both satellites were created to study our planet from space, but initially their goals were different. The Cryosat 2 mission was sent while Jason 1 monitored sea level changes (before being "shut down" in 2013 after 12 years of operation). Both probes carry radar altimeters, instruments that measure the exact distance between the satellite and the Earth's surface (or the ocean floor).
New gravity data give clear picture of ocean floor landscape
(Illustration by Scripps Institution of Oceanography).
The devices measured tiny changes in the level of the ocean surface, taking into account the effect of the error of temporal phenomena (for example, waves and tides). Thus, it was revealed how the ocean responds to the gravitational pull of underwater features, such as mountain ranges. In essence, the probes mapped the surface of the sea as a cast of the sea floor: a seamount, for example, deforms the surface of the sea with its gravitational pull.
"Over the years, we've only had two main opportunities to get this kind of data," says Sandwell. In 1997, we systematized this data and compiled the first map of the seabed, but the gaps in the study of the ocean floor were about 90%. The new information improved our map by at least a factor of two: now our data is much more accurate."
When compiling the old map, scientists were able to detect underwater volcanoes - mountains that rise more than two kilometers from the seabed. In the new work, they managed to identify at least 20 thousand previously unknown seamounts 1.5-2 kilometers high. They are scattered over relatively young regions of the seabed.
Model of a triple junction (meeting of three oceanic plates) in the Indian Ocean
(Illustration by David Sandwell, Scripps Institution of Oceanography, UC San Diego).
The map also allowed a closer look at the sedimentary rocks of the seabed. In the northern part of the Indian Ocean, an underwater ridge was discovered passing through the Bay of Bengal - a sedimentary cover 8 kilometers thick (that is, it can be compared with the Himalayan mountains in height).
Feb 24, 2017
Scientists have made a sensational discovery - the bottom of the world's oceans is literally filled with ancient cities and roads. Surprisingly, after Canadian scientists found Atlantis at the bottom of the Bermuda Triangle, it turned out that this is far from the only sunken state.
Cities and roads at the bottom of the Mediterranean Sea
We will begin our journey through the mysteriously sunken empire from the Mediterranean Sea. The city, located at coordinates 34.057634, 19.743558, is connected by roads to the island of Crete, the mainland of Greece, as well as to other sunken cities located at coordinates 33.299429, 23.242886 and 32.619241, 26.849810. Moreover, even the streets and houses of these cities at the bottom of the Mediterranean Sea are perfectly visible.
Huge lines at the bottom of the Atlantic Ocean
The bottom of the Atlantic is also fraught with a secret - huge stripes, resembling enlarged Nazca geoglyphs, cross almost the entire ocean. The center of their convergence is at the point -15.740183, -16.000171. Incredibly, these lines are very similar to huge landing strips.
Giant lines at the bottom of the Indian Ocean
Similar bands are also found at the bottom of the Indian Ocean. The two largest of them intersect at -20.007693, 80.865365
Sunken cities at the bottom of the Pacific Ocean
The most interesting secret is hidden by the Pacific Ocean. At its bottom, the city is clearly visible, located at the coordinates -17.346510, -113.346570. This city is very reminiscent of the Capital, since many roads radiate from it leading to smaller cities.
Lines on the bottom of the Black Sea
Even the Black Sea, so close to us, hides gigantic lines under its waters, resembling huge furrows. Two of them lead towards Istanbul, formerly known as Constantinople. Their size and evenness are really impressive. You can see them at 42.075617, 31.553223 and 42.824538, 31.026954.
Sunken cities around the world
It's amazing, but we have revealed to you only a small part of the mysteries of the underwater world. You can easily check all the provided data using Google maps.
December 14th, 2016
Blogger 555alex555 studied at leisure Google maps, in particular the seabed, and found strange images. What's this? Shooting artifacts? Feature of sonar? Or are these real shots of the bottom?Moreover, it can be found in almost any part of the oceans.If so, what is it? The blogger asks readers a question - how can these formations be rationally explained?
Let's try to think about this together.
1.
https://www.google.ru/maps/@20.8546126,-1 55.0647782,36098m/data=!3m1!1e3?hl=ru
We discussed not so long ago, but these objects are not like this story.
2.
https://www.google.ru/maps/@20.2524245,-1 54.799597,35846m/data=!3m1!1e3?hl=ru
We had a conversation about- also does not look like these formations.
https://www.google.ru/maps/@18.5342253,-1 54.2985031,30047m/data=!3m1!1e3?hl=ru
What other versions will you have?
4.
https://www.google.ru/maps/@17.1439872,-1 55.8918893,35656m/data=!3m1!1e3?hl=ru
5.
https://www.google.ru/maps/@18.8294194,-1 56.9540773,35472m/data=!3m1!1e3?hl=ru
6.
https://www.google.ru/maps/@20.7916909,-1 60.0900944,35737m/data=!3m1!1e3?hl=ru
7.
With the help of Google Ocean, users can study the relief of the seabed, view ocean attractions, find out the temperature of the water and the direction of the currents. The map also includes coral reefs and shipwrecks.
Homeland of the Atlanteans?
Very soon, Google Ocean brought the first sensation. On February 20, the British tabloid The Sun reported that aeronautical engineer Bernie Bamford had discovered a very strange object in the Atlantic Ocean using Google Ocean. Approximately a thousand kilometers off the northwest coast of Africa, near the Canary Islands, Bamford saw a rectangle with an area of about 20 thousand square kilometers. The British The Sun clarified that the object is the size of Wales, and the Russian TV channel Zvezda wrote in its message that the find is comparable in area to the Moscow Region, although the Moscow Region is twice the size of Wales.
Inside, the rectangle, located at a depth of about 5.5 kilometers, is streaked with lines intersecting at right angles. The exact coordinates of the find are 31 degrees 15 minutes 15.53 seconds north latitude and 24 degrees 15 minutes 15.30 seconds west longitude. See a strange object
According to The Sun, the find could be nothing more than Atlantis. The large rectangle is the walls, the network of lines inside is the streets. The newspaper does not draw attention to the fact that the size of the ancient city (if this is it) is 10 times larger than London. After all, the Atlanteans were the children of Poseidon, and with the help of the gods, you can build something else.
For advice, The Sun turned to "head of historical archeology programs at the State University of New York" Charles Orser (Charles Orser). "One of the world's leading experts on Atlantis" stated that the suspicious object is located in one of the most likely places for the existence of a mythical city (or island or even continent).
If you turn to the website of the State University of New York, then in the list of its employees there is no person named Charles Orser. Instead, historical archaeologist Charles Orser works at the University of Illinois and the New York State Museum at Albany. He is indeed considered an expert on the search for Atlantis. In an earlier interview with a National Geographic journalist, Orser noted: "Pick any place on the map, and someone will say that Atlantis was here."
However, in theories about the location of the homeland of the Atlanteans, the territory in the vicinity of the Strait of Gibraltar is indeed mentioned more often than other places.
The news of the discovery of Atlantis instantly spread across the Internet. A little over an hour after Lenta.Ru published a message about the find, on Wikimapia (WikiMapia service is a "symbiosis" of Google Maps and Wikipedia, in which users can comment on any objects presented on Google maps), slightly modified quotes from him.
A matter of technology
But they did not have time to properly discuss the amazing discovery on the Web. Hours after the article was published in The Sun, a Google spokesperson disappointed the sensationalists. Laura Scott explained that the strange object is a technical artifact that arose from the nature of the collection of topographic data.
Information about the bottom topography is obtained using sonars, or echo sounders, installed on ships. Sonar sends a sound signal into the depths, which passes through the water column until it hits an obstacle. The sound wave bounces off the obstruction and returns to the top where it is picked up by the sonar receiver. From the return time of the signal, you can calculate the distance to the object. Having carried out many measurements in one place, topographers get an idea of the bottom topography.
Modern echo sounders take measurements several dozen times per second. As Scott explained, the straight lines of the found Atlantis correspond to the trajectories of the movement of ships at the time when the sonars are turned on.
Ie again. From the satellite, the relief of the bottom of the seas and oceans is not visible. Therefore, bathymetric maps were used in compiling the relief map of the sea bottom. The stripes are the path of a ship that has been traveling with its multibeam echo sounder on in order to obtain bathymetric data. But after receiving digital data on this profile, they were not processed, but immediately loaded into the database. Therefore, we see data on this profile that are more accurate in terms of depth measurements, but since they are not processed, a lot of "rebounds".
The news of the closure of Atlantis caused as much response in the blogs as the first message. Bloggers are divided into two parts. Some spoke in the sense that "we knew it, it's all fiction." Some of the skeptics even changed the comments on Wikimapia. Representatives of the second camp wrote in their online diaries that Google does not want to recognize the great discovery and, in fact, they found Atlantis. Bloggers who believe in the existence of Atlantis have noticed that ships cannot turn at right angles and that similar artifacts have not been seen in other parts of the ocean.
On the page is an interactive map of the Bottom from the satellite. Read more at +weather. Below are satellite images and real-time search, photos of the city and the Pskov region of Russia
Satellite map of Dno - Russia
We observe on the satellite map Dno (Dno) exactly how the buildings are located on Nevskaya and Proletarskaya streets. The ability to see on the map the entire territory of the district, highways and lanes, address search.
The satellite map of the city of Dno presented here online contains images of buildings and photos of houses from space. You can find out where the street begins. Krestyanskaya and Marx. Using the search service Yandex, you will find the desired address in the city. We advise you to change the scale of the scheme +/- and move its center in the right direction.
Squares and shops, buildings and roads, squares and houses, streets of Kalinin and Cosmonauts. On the page detailed information and photos of all objects. To find the necessary house in real time on the map of the city and the Pskov region in Russia.
A detailed satellite map of the Dno and the area is provided by Google Maps.
Coordinates - 57.8244,29.9640
It is believed that there are no white spots left on the earth's maps for a long time - but perhaps this is still not entirely true. Yes, the era of geographical discoveries is a distant past, and many of the objects that travelers of past centuries desperately sought to conquer have now actually become tourist attractions. But do not forget that land occupies only 29% of the surface of the globe. As for the depths of the sea, they have been studied much, much worse.
Until today, the most accurate map of the seabed was dated 1997. It was created on the basis of declassified data from the US Navy's GEOSAT satellite after the Cold War, as well as information from the European ERS-1. To give you a better idea, its accuracy allowed researchers to find seamounts that rose more than 2 kilometers above the ocean floor.
Red dots indicate earthquakes with a magnitude greater than 5.5.
And now, scientists finally have a more perfect tool. The new map was created based on information provided by two spacecraft - the European CryoSat-2, whose main mission was to measure the area and thickness of the ice cover in Antarctica, Greenland and the Arctic; as well as the American-French Jason-1, which studied ocean currents and measured sea levels.
Taking satellite data on tiny changes in sea level in different regions of the world's oceans, scientists subtracted from them the influence of all extraneous factors like waves. As a result, they still have information about the effect that the gravity of underwater formations (like mountain ranges) has on sea level - in fact, a gravity map, the accuracy of which turned out to be at least 2 times higher than the 1997 maps.
As a result, more than 20,000 unknown seamounts have been discovered, ranging in height from 1.5 to 2 kilometers. In addition, scientists have found traces of several mountain ranges in the Bay of Bengal and Mexico, now buried under many kilometers of sediment.
