This indicates that the ground is insulated, allowing liquid water to collect underneath the sediment. This type of closed system pingos is formed in an area where a lake has been infilled with sediment. The figure above illustrates this process and the changes that occur throughout the year. The formation of these landforms occurs when layers of permafrost generate an upwards movement or pressure, resulting in masses of confined soil freezing, which pushes material upwards due to expansion. These pingos are found in flat, poorly drained areas with limited groundwater available such as shallow lakes and river deltas. They occur in regions of continuous permafrost where there is an impermeable ground layer. Hydrostatic pingos Diagram showing how closed system (hydrostatic) pingos are formedĬlosed systems, also known as hydrostatic pingos are formed as a result of hydrostatic pressure that has built up within the core of pingos due to water. Pingos can collapse due to the melting of the supporting ice and give rise to a depression in the landscape showing an inverse shape (horizontal mirror). Evidence of collapsed pingos in an area suggests that there was once permafrost. Pingos can only form in a permafrost environment. The term pingo, which in Inuvialuktun means conical hill, has now been accepted as a scientific term in English-language literature. Porsild Pingo in Tuktoyaktuk is named in his honour. However, it was in 1938 that the term pingo was first borrowed from the Inuvialuit by the Arctic botanist Alf Erling Porsild in his paper on Earth mounds of the western Arctic coast of Canada and Alaska. In 1825, John Franklin made the earliest description of a pingo when he climbed a small pingo on Ellice Island in the Mackenzie Delta. The outline of the previously drained lake can be seen. History Collapsed pingo in the Mackenzie Delta. There is currently remarkably limited data on pingos. The Tuktoyaktuk peninsula area has the greatest concentration of pingos in the world with a total of 1,350 pingos. It is estimated that there are more than 11,000 pingos on Earth. A pingo is a periglacial landform, which is defined as a non-glacial landform or process linked to colder climates. They are typically conical in shape and grow and persist only in permafrost environments, such as the Arctic and subarctic. High-definition MOD, Netflix, Chromecase, PS3, PS4 (HDCP feature is adjustable), Blu-Ray DVDįinally, if you would like to learn more about USB-C or some technical knowledge, like and follow us on Facebook.Mound of earth-covered ice Pingos near Tuktoyaktuk, northern Canada View from top of a pingo towards another, within a partly drained lake, the Arctic Ocean in the background (near Tuktoyaktuk). Here are some examples of HDCP compliant platforms: Next time if your device is still not showing the content or it fails to transfer high-definition videos, you can first check whether your source is HDCP certified, and then check the HDMI cable and the receiving device.ĭiagram of our Pengo 4K HDMI Grabber and HDCP: If you are still unsure about how to successfully operate Pengo 4K HDMI Grabber, here we’ve got some examples for you (see diagrams below). (Now you know the reason why Pengo 4K HDMI Grabber does not support HDCP feature!) None of the HDCP compliant devices supports data copy due to digital content protection. (The initial intention was to prevent people from re-recording movies or videos and create pirated copies.) If we use non-HDCP devices, the resolution might decrease below 480p or the worst of all, not able to transfer data at all. Your transmitting or receiving devices will not function if either end of the two devices isn’t HDCP certified. To put this in a simple way, this protection avoids video quality over 480p becomes pirated while transferring data through HDMI, DVI, DisplayPort or USB connections. High-Bandwidth Digital Content Protection (HDCP) is a security feature that’s created to protect the copyright of high-definition videos and to prevent contents from playing on unlicensed devices.
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