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Sentinel-2 Satellite-derived Bathymetry in Optically Complex Waters

Dublin Bay Case Study
May 12, 2021
Coastal areas are highly dynamic environments that are subject to diverse pressures, both anthropogenic (e.g. urban development, fishing, habitat modification) and natural (e.g. storms, erosion, floods). These pressures result in intensive and frequent seafloor alterations that demand efficient monitoring methodologies for repetitive updating of the seafloor morphology and bathymetry. Bathymetric information is essential in many coastal aspects, including environmental, management, research and economic.
Optical satellite data provides an efficient alternative to bathymetric derivation in shallow coastal waters ( ....

Dublin Bay , Dublin City , United Kingdom , Conor Cahalane , Numerical Optics Ltd , Postdoctoral Fellowship Programme , International Journal Of Remote Sensing , Johnd Hedley Numerical Optics Ltd , Paul Harris Rothamsted Research , Tim Mccarthy Maynooth University , Xavier Monteys Geological Survey Ireland , Geological Survey Ireland , Irish National Tide Gauge Network , Depth Water Correction , Sentinel Application Platform , Image Data Analysis , Numerical Optics , Tuning Models , Model Inversion , Geological Survey , Fellowship Programme , Xavier Monteys , Paul Harris , Rothamsted Research , Tim Mccarthy , Maynooth University ,

Dundee scientist Arthur Cracknell who used space images to help environment dies aged 80

Dundee scientist Arthur Cracknell who used space images to help environment dies aged 80
pressandjournal.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from pressandjournal.co.uk Daily Mail and Mail on Sunday newspapers.

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Did NASA Calibrate Satellite Cameras Using Farmer's Name Written in Field?

Origin
In the l990s, a Texas farmer named Jimmie Luecke cleared several miles of brush on his land to spell out his last name in letters so large that they are visible in satellite photos. And because the word was carved so meticulously, NASA scientists have used the large linear letters to calibrate satellite cameras board space shuttles.
Iterations of the space-observable “Leucke” signature have made the rounds on the internet for nearly two decades. This claim is true but because the occurrence was first reported in 2002, we rate this claim as “Outdated.”
In a NASA blog post written in 2011, Robert Simmon, a data visualizer and information designer, described his surprise at finding the “kilometers-tall” letters that spelled out “Luecke” near Austin, Texas. Simmon noted that although the letters could have “just been a curiosity for passing pilots and astronauts,” scientists at the Johnson Space Center used the letters to estimate the maximum res ....

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