Science Magazine<\/a> that the GPS measurements indicate the loss of water from streams, lakes, groundwater, and snowpack total approximately 240 billion metric tons. This is the equivalent to 4 inches of water covering the western United States from the Pacific to the Rockies<\/p>\nThe water loss measurement principle is simple. The weight of the Earth\u2019s groundwater and surface water deforms Earth\u2019s crust similar to the way a person\u2019s weight deforms a mattress. When the water is removed, the Earth\u2019s crust rebounds. The water levels on Earth vary with the seasons causing the Earth\u2019s crust to move up and down. The movement is only fractions of an inch; however, the Global Positioning System is able to measure these small shifts<\/p>\n
Since early 2013, researchers noticed that there has been a tremendous uplift signal (rise) in the Earth\u2019s crust. The current uplift pattern is consistent with the declines in precipitation, groundwater levels and stream flow. Without the water, the Earth\u2019s crust is elastically rebounding over the entire region<\/p>\n
The Global Positioning System data complements observations from NASA\u2019s satellites. NASA has an ongoing experiment, GRACE (Gravity Recovery and Climate Experiment), which is measuring small changes in the gravity field on Earth caused by water movement under and on the Earth\u2019s surface. This experiment allows researchers to estimate soil moisture and groundwater conditions all over the world. The GRACE experiment is able to operate in areas around the world where Global Positioning Systems do not exist yet, such as South America and Africa<\/p>\n
The new Global Positioning System data may prove vital as the climate changes worsen. This finding makes GPS data is useful to a wider group of scientists and researchers.<\/p>\n","protected":false},"excerpt":{"rendered":"
Vanishing Water Monitored With Global Positioning System For years, small movements in the Earth\u2019s crust have been monitored, using the Global Positioning System, to help provide warning of developing earthquakes. Researchers were surprised to discover that the GPS is also recording data in relation to the vanishing water in the western United States. Throughout the […]<\/p>\n","protected":false},"author":4,"featured_media":7520,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,11],"tags":[],"class_list":["post-7519","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-industries-gps-tracking-blog"],"yoast_head":"\n
Global Positioning System Used To Monitor Vanishing Water<\/title>\n\n\n\n\n\n\n\n\n\n\n\t\n\t\n\t\n\n\n\n\t\n\t\n\t\n