Artesian aquifer its recharge zone is at a higher elevation than the head of the well. Artesian wells were named after the former province of Artois in France, where many artesian wells were drilled by Carthusian monks from 1126. Artesian aquifer An aquifer is a geologic layer of porous and permeable material such as sand and gravel, limestone, or sandstone, through which water flows and is stored. An artesian aquifer is a confined aquifer containing groundwater under positive pressure. An artesian aquifer is trapped water, surrounded by layers of impermeable rocks or clay, which applies positive pressure to the water contained within
FTV-1126 orbit, it was assigned the Harvard designation 1962 Sigma 1. FTV-1126 was operated in a low Earth orbit, with a perigee of , an apogee of , 82.3 degrees of inclination, and a period of 93.75 minutes. The satellite had a mass of , and was equipped with a frame camera with a focal length of , which had a maximum resolution of . Images were recorded onto film, and returned in a Satellite Recovery Vehicle, before the satellite ceased operations. The Satellite Recovery Vehicle used by FTV-1126 was 582. Once its images had been returned, the inactive FTV-1126 decayed