Revision History for FS 2020-3066 U.S. Geological Survey Maine and Landsat ----------------------------------------------------- Posted online December 21, 2020 ----------------------------------------------------- Revised and reposted July 1, 2022, version 1.1 The State image on p. 1 was changed from a Landsat 7 image to a Landsat 8 image. On p. 1, the figure caption was modified to use "left to right" instead of "top," "middle," and "bottom," and the image credit "U.S. Geological Survey" was added. In the "Forest Health and Changes" section, the text was modified to be one paragraph instead of bullet points, and the in-text citation "Sader and others, 2005" was added. In the "Fishing and Farms" way section, two in-text citations (Snyder and others, 2017, and Leslie and others, 2017) were added. In the "Coastlines and Wetlands" section, text in the first sentence was changed from "beaches, and increases" to "beaches and increase." The text was modified to be in one paragraph instead of bullet points, and the in-text citation "Rocchio, 2018" was added. The "Water Quality" section was removed. In the "Landsat--Critical Information Infrastructure for the Nation" section, the sentence "Local, State, and Federal agencies use Landsat to monitor and forecast a wide range of land surface phenomena." was changed to "Local, State, Tribal, and Federal agencies use Landsat to monitor and forecast a wide range of land surface phenomena." In the second paragraph of this section, "space imaging" was hyphenated and the in-text citation "Straub and others, 2019" was added. The third paragraph was changed from "Landsat 7 and Landsat 8 provide 8-day repeat coverage of the Earth’s land surfaces. Landsat 9, which will replace the aging Landsat 7, is under development for launch in 2021. The National Aeronautics and Space Administration (NASA) and the USGS are currently reviewing the findings from a joint Architecture Study Team, which will inform the design and implementation approach for Landsat Next, the follow-on mission to Landsat 9. Landsat 9 and its successors will provide a sustainable, space-based system to extend the nearly 50-year Landsat series of high-quality global land imaging measurements--the world’s longest time series of the Earth’s land surface." to "Landsat 8 and Landsat 9 provide 8-day repeat coverage of the Earth’s land surfaces. The National Aeronautics and Space Administration (NASA) and the USGS are currently reviewing the findings from a joint Architecture Study Team, which will inform the design and implementation approach for Landsat Next, the follow-on mission to Landsat 9. Landsat 9 and its successors are planned to provide a sustainable, space-based system to extend the 50-year Landsat series of high-quality global land imaging measurements—the world’s longest time series of the Earth’s land surface." A "References Cited" section was added. ----------------------------------------------------- Revised and reposted May 16, 2023, version 1.2 In the "Coastlines and Wetlands" section, text was modified from "Geographers and remote-sensing scientists use Landsat to create digital elevation models to map the shoreline elevations and help inform decision makers on several areas: where human activities, such as filling tidal wetlands, not only affect habitat for bird and fish species but also remove an important line of defense against coastal flooding; where storm surges are becoming higher, eroding shorelines, and making coastal cities more vulnerable to storms; and where community infrastructure, such as highways, rail lines, wastewater treatment plants, and more, are threatened by sea-level rise and future storm surges (Rocchio, 2018)." to "Geographers and remote-sensing scientists use Landsat to help map shorelines and inform decision makers on several areas: where human activities, such as filling tidal wetlands, not only affect habitat for bird and fish species but also remove an important line of defense against coastal flooding; where storm surges are becoming higher, eroding shorelines, and making coastal cities more vulnerable to storms; and where community infrastructure, such as highways, rail lines, wastewater treatment plants, and more, are threatened by sea-level rise and future storm surges (Pearsall, 2021)." The figure caption on p. 2 was modified from "Landsat images are used to create digital elevation models that can help identify where storm surges are becoming higher, eroding shorelines, and making coastal cities more vulnerable to storms." to "Landsat imagery is used to help identify coastal areas vulnerable to storm surges and erosion." In the references cited section, one reference (Rocchio, 2018) was removed. One reference (Pearsall, 2021) was added.