![]() ![]() Images can be viewed online and full resolution images can be downloaded in NITF format. Thanks to grants from the National Endowment for the Humanities and the American Council of Learned Societies, the University of Arkansas’ Center for Advanced Spatial Technologies ( CAST) has developed methods for efficient orthorectification of CORONA imagery and now provides free public access to our imagery database for non-commercial use. However, the unique imaging geometry of the CORONA satellite cameras, which produced long, narrow film strips, makes correcting spatial distortions in the images very challenging and has therefore limited their use by researchers. These sites are often clearly visible on CORONA imagery, enabling researchers to map sites that have been lost and to discover many that have never before been documented. In regions like the Middle East, CORONA imagery is particularly important for archaeology because urban development, agricultural intensification, and reservoir construction over the past several decades have obscured or destroyed countless archaeological sites and other ancient features such as roads and canals. Because CORONA images preserve a high-resolution picture of the world as it existed in the 1960s, they constitute a unique resource for researchers and scientists studying environmental change, agriculture, geomorphology, archaeology and other fields. The more than 800,000 images collected by the CORONA missions remained classified until 1995 when an executive order by President Bill Clinton made them publicly available through the During that time, CORONA satellites took high-resolution images of most of the earth’s surface, with particular emphasis on Soviet bloc countries and other political hotspots in order to monitor military sites and produce maps for the Department of Defense. Timelapse in Google Earth is possible because of the commitment to open and accessible data through NASA and the United States Geological Survey’s Landsat program (the world’s first and longest-running civilian Earth observation program) and the European Union’s Copernicus program with its Sentinel satellites.Ĭheck out the updated visualization today in Google Earth at g.co/timelapse, and on YouTube via g.co/timelapsevideos.CORONA is the codename for the United States’ first photographic spy satellite mission, in operation from 1960-1972. ![]() And people are using this imagery to convey the effects of these changes, like the 2022 documentary The Territory which uses Timelapse to show the devastation of deforestation across the Amazon and its effect on local communities. From researchers to teachers, anyone can use these videos to better understand our changing planet. You can also view a library of over 800 Timelapse videos for more than 300 locations at g.co/TimelapseVideos. The imagery also captures ways cities have adapted to combat climate change - like offshore wind farms in Middelgrunden, Denmark and a large-scale solar installation in Granada, Spain. Timelapse in Google Earth is a global, zoomable time-lapse video of the planet, providing evidence of earth’s dynamic changes - from irrigation systems emerging in the deserts of Egypt and meandering rivers shifting over time in the Amazon rainforest in Pucallpa, Peru to volcanic eruptions, logging and wildfires changing the landscape of California’s Lassen National Forest. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |