Category Archives: Enviro/Ag

Eclipse Background, NASA

Night in the Afternoon: A US Solar Eclipse

What you need to know about the 2017 solar eclipse The upcoming solar eclipse will leave a 70-mile-wide trail of darkness across the United States on August 21, 2017 (see the map of the eclipse path on pages 44-45). This will be a once-in-a-lifetime event for many people. While another total solar eclipse will make...

GEO Business 2017

Nicholas makes the annual pilgrimage to GEO Business for xyHt This blog is going to start with a short piece about skips. If you are afraid of skips (skips are what you’d call “dumpsters” across the Atlantic), turn away now …. Monday morning and 24 hrs from the start of GEO Business 2017, I get...

Different visualizations of the same VNIR+SWIR hyperspectral image (of Wizard Island, Crater Lake, OR) draped over a lidar bare-earth digital elevation model. The variation in vegetation, snow, soil/geologic cover, and even water properties can be highlighted with different combinations of spectral wavelength images.

HSI on the Fly

One company details mapping applications of airborne hyperspectral imagery for agriculture, forestry, and resource mapping. By Patrick Burns and Scott Nowicki, PhD Remote sensing imagery has been collected with many different camera systems for many different applications over the past 50 years of the industry.  Visible remote sensing imagery provides interpretable information available to most...

Snake River winds through Hells Canyon, shown here between Kirkwood Historic Ranch and Pittsburg Landing. Credit: X-Weinzar.

Re-imaging Hells Canyon

A geospatial company helps prepare for an environmental impact statement by scanning and orthorectifying historic imagery. Hells Canyon, North America’s deepest river gorge, encompasses a vast and remote region with dramatic changes in elevation, terrain, climate, and vegetation. Carved by the great Snake River, Hells Canyon plunges more than a mile below Oregon’s west rim...

Mapping the Pennsylvania Lake Erie Watershed

Imagery was collected along 77 miles of shoreline to provide a better understanding of Pennsylvania’s natural resources. By Brian Stevens  The Pennsylvania Lake Erie Watershed is a substantial part of the world’s largest surface freshwater system, the North American Great Lakes. The watershed is 512 square miles, consisting of 15 major sub-watersheds. It’s estimated that...

xyHt Heights supplement cover April 2017

Remote Sensing in Yellowstone Park

A consortium demonstrates the value of integrated remote-sensing technologies for studying and monitoring the impacts of climate change using the northern range of Yellowstone National Park as a testing area. By Dr. Olaf Niemann,  Dr. Robert Crabtree,  and David Brown   In 2014, a consortium between environmental scientists and an airborne remote-sensing company was awarded funding...