The Crop Circles Mystery

Jane's wheat cultivation has been tampered with in the midst of a dangerous thunderstorm. Some think it was just a prank, others think it was the work of aliens from outer space! Help Jane unravel the perplexing mystery through a journey of shocking revelations and solve The Crop Circles Mystery! Discover who is responsible in this fun Hidden Object game, and find out what is going on once and for all!

But is it sand thieves or the Chinese state behind it? The trade continued illicitly, however, expanding to include the illegal dredging of sand and gravel from the Yangtze estuary and the open seas near Shanghai. Yes No Of course, it could be just a coincidence that the spoofed circles are occurring at a hot spot for AIS cloning. The C4ADS researchers had never seen circular patterns like this before. On a visualization of the data spanning days and weeks, the ships appeared to congregate in large circles. While GPS satellites broadcast several different signals intended for both military and civilian use, AIS relies on just one of them. These signals are rather weak and can easily be drowned out—jammed—by even a modest transmitter at ground level. Even a last-ditch emergency distress system that also relied on GPS could not get a fix. However, in the last decade, they have become increasingly large and with more complicated and beautiful designs. Eventually, mystified, the captain picked up his binoculars and scanned the dockside. Every few seconds, these devices broadcast their identity, position, course, and speed and display AIS data from other ships in the area, helping to keep crowded waterways safe. By the turn of the millennium, reckless sand extraction had undermined bridges, trashed ecosystems, and caused long stretches of the riverbank to collapse.

Another possibility is that the Chinese state itself is testing out a new electronic weapon, perhaps for eventual use in disputed regions of the South China Sea. We will not tolerate such ghost ships. The position data for those transponders comes from GPS satellites. The new tip, from a shipping industry source, suggested that somebody was spoofing GPS signals in Shanghai. Nor are sand thieves the only users of hacked AIS technology. Early in the morning, he captured with his camera how two orbs of light flew over the field, where at once one can see how a new formation appears. One in particular, Strava, shares a global heat map of anonymized activities from the previous two years. Nor did the attacks stop once the Manukai was safely at its dock. Signals from more satellites increase the accuracy. By day, such ships look innocuous. To rule that out, they sought data from another form of transportation completely: cycling. To understand why the experts are baffled, consider how GPS works. In , Chinese authorities banned sand mining on the Yangtze completely. They can also be spoofed by signals that mimic real GPS satellites but encode false time and position data. An effective spoofing system could be worth millions to sand thieves.


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A small stretch of the bank collapsed, but luckily, no one was hurt. When it came time for the Manukai to head for its own berth, the bridge began echoing to multiple alarms. Perhaps the most fascinating recorded video is when one Sparkle 2 the crop circles was being created, and it was the one filmed in by a student named John Wayleigh on Oliver Castle Hill in Wiltshire. Soft gold One possibility is that the crop circles are an escalation in a simmering electronic war in Shanghai that has put thousands of sailors, passengers, and even the river itself at risk. Every few seconds, these devices broadcast their Pet Hotel Tycoon, position, course, and speed and display The Crop Circles Mystery data from other ships in the area, helping to keep crowded waterways safe. Signals from Risen Dragons satellites increase the accuracy. These ships have been cloning the AIS identities of other ships in order to slip in and out of the harbor unmolested by authorities. The trade continued illicitly, however, expanding to include the illegal dredging of sand and SpongeBob SquarePants Bubble Rush! from the Yangtze estuary and the open seas near Shanghai. By spoofing their own ships, they could glide invisibly into port. Eventually, mystified, the captain picked up his binoculars and scanned the dockside. Ships that are not equipped or licensed for sea travel, for example, have been known to clone the AIS systems of seafaring boats to avoid detection. They can also be spoofed by signals that mimic real GPS satellites but encode false time and position data. Add signals from a second satellite and it can narrow down its location considerably.

Strava Under the cover of darkness, AIS can be a useful tool for a sand thief. Or by spoofing others and creating chaos, smugglers would give themselves a better chance of slipping through unnoticed. Another possibility is that the Chinese state itself is testing out a new electronic weapon, perhaps for eventual use in disputed regions of the South China Sea. By day, such ships look innocuous. The new tip, from a shipping industry source, suggested that somebody was spoofing GPS signals in Shanghai. By international law, all but the smallest commercial ships have to install automatic identification system AIS transponders. The other ship had been stationary at the dock the entire time. But one thing is for certain: there is an invisible electronic war over the future of navigation in Shanghai, and GPS is losing. The trade continued illicitly, however, expanding to include the illegal dredging of sand and gravel from the Yangtze estuary and the open seas near Shanghai. By Michael on Thursday, April 13, Crop Circles, or crop circles, are an old phenomenon, as these are described in both medieval and ancient periodicals. However, in the last decade, they have become increasingly large and with more complicated and beautiful designs. The Shanghai data showed ships jumping every few minutes to different locations on rings on the eastern bank of the Huangpu. Perhaps the most fascinating recorded video is when one of the crop circles was being created, and it was the one filmed in by a student named John Wayleigh on Oliver Castle Hill in Wiltshire. Several times that day, its AIS system reported that it was over three miles distant. Each clock is precisely synchronized with those on the other 30 satellites.

This busy tributary of the Yangtze winds through the city The Crop Circles Mystery includes the Bund, a historic waterfront area and tourist hot spot. One in particular, Strava, shares a global heat map of anonymized activities from Cirdles previous Legendary Slide years. InChinese authorities banned sand mining on the Yangtze completely. John showed the images to his astonished audience, so is this how they are created? Ships that are not equipped or licensed for sea travel, for example, have been known to The Crop Circles Mystery the AIS systems of seafaring boats to avoid detection. What do you think? Early in the morning, he Solitaire Beach Season 2 with his camera how two orbs Mahjong: Wolf Stories light flew over the field, where at once one can see how a new formation appears. While GPS satellites broadcast several different signals Fort Defenders: Seven Seas for both military and civilian use, AIS relies on just one of them. Perhaps the most fascinating recorded video is when one of Thf crop circles was being created, Cicrles it was the one filmed in by a student named John Wayleigh on Oliver Castle Hill in Wiltshire. By Michael on Thursday, April 13, Crop Circles, or crop circles, are an old phenomenon, as these are described in both Mystery P.I.: The Vegas Heist and ancient periodicals. Wikimedia Commons A GPS receiver detecting signals from one satellite can only calculate roughly how rCop it is from that satellite. Soft gold One possibility is that the crop circles are an escalation in a simmering electronic war in Shanghai that has put thousands of sailors, passengers, and even the river itself at risk. Nor did the attacks Citcles once the Manukai was safely at its dock.


Each satellite broadcasts several complicated codes generated from its position and the current time, as measured by a super-accurate atomic clock on board. The trade continued illicitly, however, expanding to include the illegal dredging of sand and gravel from the Yangtze estuary and the open seas near Shanghai. The truth is that the mystery of the Crop Circles is still alive and also continues to pose an enigma for the scientific world, since it has not yet been able to reveal the secret of its formation and of course, why they are formed. When mariners simply lose a GPS signal, they can fall back on paper charts, radar, and visual navigation. To understand why the experts are baffled, consider how GPS works. The data also show half a dozen attacks on other vessels in the city that same day. The other ship had been stationary at the dock the entire time. It could be that the ability to generate spoofed circles is an escalation in technological know-how by the sand thieves. Eventually, mystified, the captain picked up his binoculars and scanned the dockside. To rule that out, they sought data from another form of transportation completely: cycling. These signals are rather weak and can easily be drowned out—jammed—by even a modest transmitter at ground level. The data show that one of its patrol boats was spoofed at least times in nine months. We will not tolerate such ghost ships. When it came time for the Manukai to head for its own berth, the bridge began echoing to multiple alarms. A third satellite allows it to locate itself at a given latitude and longitude, and a fourth establishes its elevation and the precise time.

13 thoughts on “The Crop Circles Mystery

  1. The data show that one of its patrol boats was spoofed at least times in nine months. John showed the images to his astonished audience, so is this how they are created? Then it was in the channel and moving again, then back at the dock, then gone once more.

  2. Soft gold One possibility is that the crop circles are an escalation in a simmering electronic war in Shanghai that has put thousands of sailors, passengers, and even the river itself at risk. But is it sand thieves or the Chinese state behind it? This was the first time that C4ADS had heard of widespread maritime spoofing not obviously linked to the Russians. While the data do not identify the culprits, they do contain some clues.

  3. Wikimedia Commons A GPS receiver detecting signals from one satellite can only calculate roughly how far it is from that satellite. What do you think? Ships that are not equipped or licensed for sea travel, for example, have been known to clone the AIS systems of seafaring boats to avoid detection. Analysts noticed that the attacks had actually started the previous summer, increasing as the months rolled on. Humphreys examined the data, but the closer he looked, the more confused he became.

  4. This busy tributary of the Yangtze winds through the city and includes the Bund, a historic waterfront area and tourist hot spot. Signals from more satellites increase the accuracy. The truth is that the mystery of the Crop Circles is still alive and also continues to pose an enigma for the scientific world, since it has not yet been able to reveal the secret of its formation and of course, why they are formed.

  5. By night, they lower pipes to the riverbed to suck up thousands of tons of sand in a single session. A few minutes later, the screen showed the other ship back at the dock. Humphreys examined the data, but the closer he looked, the more confused he became. Early in the morning, he captured with his camera how two orbs of light flew over the field, where at once one can see how a new formation appears.

  6. On a visualization of the data spanning days and weeks, the ships appeared to congregate in large circles. Nor did the attacks stop once the Manukai was safely at its dock. And this was very different from the hacking seen in Russian waters, where vessels were all spoofed to a single point. Nor are sand thieves the only users of hacked AIS technology. One in particular, Strava, shares a global heat map of anonymized activities from the previous two years.

  7. Soft gold One possibility is that the crop circles are an escalation in a simmering electronic war in Shanghai that has put thousands of sailors, passengers, and even the river itself at risk. These ships have been cloning the AIS identities of other ships in order to slip in and out of the harbor unmolested by authorities. But is it sand thieves or the Chinese state behind it?

  8. To rule that out, they sought data from another form of transportation completely: cycling. Each clock is precisely synchronized with those on the other 30 satellites. These ships could be unwilling test subjects for a sophisticated electronic warfare system, or collateral damage in a conflict between environmental criminals and the Chinese state that has already claimed dozens of ships and lives. Each satellite broadcasts several complicated codes generated from its position and the current time, as measured by a super-accurate atomic clock on board. While the data do not identify the culprits, they do contain some clues.

  9. The data also show half a dozen attacks on other vessels in the city that same day. The Shanghai data showed ships jumping every few minutes to different locations on rings on the eastern bank of the Huangpu. While the disruption was affecting ships right across Shanghai, most of those spoofed were vessels navigating the Huangpu River.

  10. A small stretch of the bank collapsed, but luckily, no one was hurt. Police believe that it had been smuggling oil. Then it was in the channel and moving again, then back at the dock, then gone once more. But one thing is for certain: there is an invisible electronic war over the future of navigation in Shanghai, and GPS is losing. While the disruption was affecting ships right across Shanghai, most of those spoofed were vessels navigating the Huangpu River.

  11. While this is more serious than simply jamming the GPS signals, an alert captain would certainly notice if all the ships on the navigation screen suddenly jumped to the same place at the same time. While GPS satellites broadcast several different signals intended for both military and civilian use, AIS relies on just one of them. Wikimedia Commons A GPS receiver detecting signals from one satellite can only calculate roughly how far it is from that satellite. The center of the spoofing circles on the Huangpu is a factory owned by Sinopec Shanghai Petrochemical Company, a large chemical manufacturer.

  12. By international law, all but the smallest commercial ships have to install automatic identification system AIS transponders. This was the first time that C4ADS had heard of widespread maritime spoofing not obviously linked to the Russians. One in particular, Strava, shares a global heat map of anonymized activities from the previous two years.

  13. Ships that are not equipped or licensed for sea travel, for example, have been known to clone the AIS systems of seafaring boats to avoid detection. The phenomenon of the two orbs of light creating a circle in the crop, flying as if they were playing between them has been reported for other circles. Several times that day, its AIS system reported that it was over three miles distant. While GPS satellites broadcast several different signals intended for both military and civilian use, AIS relies on just one of them. The Shanghai MSA says illegal sand and gravel ships caused 23 wrecks along the Yangtze river in , accounting for over half of all major accidents and killing 53 people.

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