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This entire wetland has systematically been destroyed in favour of a concrete jungle!! Sabkha is an Arabic name for a salt-flat that has come into general use in sedimentology following classic research in the United Arab Emirates of the Arabian Gulf in the s and later. A supratidal part of a large coastal sabkha at Umm Said in Qatar. This particular area is the remains of a lagoon indirectly filled with siliciclastic sand of aeolian origin, originating from some large barchan sand dunes. The flatness is controlled by the content of capillary moisture from the water-table, which is only about half a metre one and a half feet down, keeping the sand damp and firm and preventing it from being blown away. Any higher dryer sand can be moved away by deflation. This particular sabkha has much granular gypsum in addition to the sand. They often appear to be ideal for driving over being wide and flat but their appearance is deceptive. They are composed of areas of saline sand or silt, lying just above the water table and generally deposited over a long period of time by the action of wind-blown sand falling into areas of low sea. Their flatness is controlled by the humidity associated with the presence of the relatively high water table which, commonly, is about half a metre below the surface. Park your vehicle at the edge and walk to ground zero. The location is easily reached with a saloon car but caution should be exercised at all times. One of the features associated with sabkha is the presence of gypsum crystals formed within the sabkha. These appear as two crystalline forms. The first takes the shape of fans of needle-like gypsum sand and appear where the stronger structures are exposed as the lighter sands are moved away from them. These tend to be found in the area south of Umm Said towards what is known as the Inland Sea. They tend to be found in low areas in the north, east and central part of Qatar. They are delicate and can be easily broken or affected by water. There is no standard shape of these agglomerates, and they tend to be found in any numbers of crystals usually with just a part of them exposed. Those who dig to find them may go to a metre or so in order to uncover them. Obviously they are extremely sensitive to weathering and mechanical damage. In order to substantiate your visit and be able to claim this Earthcache, a number of questions need to be answered and submitted to the cache developer, via e-mail at cincolcc at gmail. Describe in your own words what the crust of the sabkha feels like when you rub it between your fingers. NOTE: You may log your visit prior to approval, but e-mail submissions that do not meet the above criteria will be deleted. Additional Hints Decrypt. What are Attributes? Advertising with Us. There are no Trackables in this cache. View past Trackables. What are Trackable Items? View all bookmark lists A cache by cincol Message this owner. Difficulty: Terrain:. Join now to view geocache location details. It's free! Sign up. Looking for a different adventure? Please note Use of geocaching. All along most of the Qatari coastal areas and in many places inland there are areas of sabkha. Describe in your own words what the crust of the sabkha looks like to the naked eye. Briefly describe what the texture feels like underfoot on your way to Ground Zero. Why would it be dangerous to drive over this sabkha? Attributes What are Attributes? Inventory There are no Trackables in this cache. View past Trackables What are Trackable Items?

Umm Said 'Sabkha' EarthCache

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Umm Said is located in Qatar. The local time at Umm Said is There are currently 14 vessels in port and vessels recently departed. The number of terminals in Umm Said is 8 and the number of berths is Vessel destination prediction based on historical AIS data. Exploring the topic of vessel destination predictions based on historical AIS data. Discover the significance of AIS technology in the maritime industry and the challenges it faces. Maritime Insight. Piracy and Anti Shipping Activity Messengers. Stay informed with updated Anti-shipping Activity Messages to recognize, prevent, and avoid potential hostile acts. HALUL

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