Displaying 3321 - 3330 of 3650
![The image displays NDVI calculated over the Guadalupe Mountain Range in Western Texas captured May 2020 by Landsat 8 OLI. Areas shaded green indicate tree canopy while yellow and red areas indicate arid landscapes. NDVI was used to visualize vegetation health and inform the National Park Service’s future management initiatives.](/sites/default/files/styles/lis/public/2022-12/2022Sum_LaRC_DelawareBasinEco_WebsiteImage.png.webp?itok=uBm4Yq0D)
Delaware Basin Ecological Forecasting (Summer 2022) Team: Jack Mezger (Project Lead), Mark Bossinger, Gillian McNamara, Quinn Heiser Summary: The Guadalupe Mountains and Carlsbad Caverns National...
![Enhanced Wetland Classification of the Slave River Delta, NWT, Canada using Landsat 8 OLI imagery from June through August 2021. Most of the colors represent different categories of wetland. Many of the darker green areas represent areas where wetlands have transitioned to dryer forests or shrubs in recent decades.](/sites/default/files/styles/lis/public/2022-12/2022Sum_MA_GreatSlaveLakeWater_WebsiteImage.png.webp?itok=JnQr2WJ-)
Mapping Long-Term Changes in the Hydroecology of the Slave River Delta Using NASA Earth Observations
Great Slave Lake Water Resources (Summer 2022) Team: Yuhe Chang (Project Lead), Virgil Alfred, Ethan McIntosh, Catherine Shea Summary: Indigenous communities around the Great Slave...
![Top layer: NDTI processed imagery of Lake Champlain derived from Landsat 8 TOA data (5/1/21 - 9/30/21). Bright orange and red represent areas of greater turbidity, which often corresponds to algal presence, whilst dark areas indicate low turbidity. Bottom layer: Slope imagery from SRTM (last updated 11/2018) of the Lake Champlain Watershed. Yellow shows areas with higher slopes, which have a greater risk of phosphorus runoff, while blue shows areas with a lesser slope.](/sites/default/files/styles/lis/public/2022-12/2022Sum_MSFC_LakeChamplainWater_WebsiteImage.png.webp?itok=WnLYkj9z)
Lake Champlain Water Resources (Summer 2022) Team: Brianne Kendall (Project Lead), Laramie Plott, Ian Turner, Aaron Carr Summary: Lake Champlain provides clean drinking water for...
![False-color imagery from Landsat 8 surface reflectance. The 2021 median composite image depicts the landscape and vegetation sites in the regions of western Bhutan, specifically the districts of Punakha, Wangdue Phodrang, Thimphu, and Paro. The band combination highlights fallow agriculture fields in light brown, dense urban areas in purple, forest cover in green, snow in light blue, and rocky areas in darker brown.](/sites/default/files/styles/lis/public/2022-12/2022Sum_MSFC_BhutanAgII_WebsiteImage.png.webp?itok=T2Ky1XPH)
Bhutan Agriculture II (Summer 2022) Team: Wangdrak Dorji (Project Co-Lead), Tenzin Wangmo (Project Co-Lead), Karma Dorjee, Sonam S Tshering Summary: Agriculture is an essential sector...
![NDVI over Mato Grosso, Brazil processed from March 2021 Landsat-8 OLI data. Calculated NDVI values correspond with colors shown to indicate plant health. High NDVI values (green to blue) indicate dense vegetation found in tropical and temperate forests or crops at their peak growth. Low values (yellow to red) depict barren land, water, and moisture-stressed vegetation. These data can support timely and efficient agricultural responses to ensure productive yields and food security.](/sites/default/files/styles/lis/public/2022-12/2022Sum_NC_MatoGrosso_WebsiteImage_FD.png.webp?itok=JJA3kKJi)
Mato Grosso Agriculture (Summer 2022) Team: Max Rock (Project Lead), Elijah Dalton, Aidan Harvey, Kate Reynolds Summary: Ranked as the fourth largest food producer in...
![This image of the Chesapeake Bay is derived from NASA Landsat 7 ETM+ and Landsat 8 OLI imagery. It represents median Normalized Difference Turbidity Index (NDTI) turbidity levels from January 2020 through June 2022. Yellow and orange areas indicate higher turbidity levels. This imagery can be used to determine areas of the bay in which turbidity poses a threat to water quality.](/sites/default/files/styles/lis/public/2022-12/2022Sum_PUP_ChesapeakeBayWater_WebsiteImage.png.webp?itok=tBWfMYEk)
Chesapeake Bay Water Resources (Summer 2022) Team: Katherine Hahn, Julia Atayi, Julia Portmann, Abigail Sgan Summary: An increase in total suspended sediment (TSS) concentrations and...