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Items tagged with: Landsat

#landsat #geography

#NASA #landsat #earth #icesat2icecloudandlandelevationsatellite2

#NASA #landsat #earth #landsat9 #earthobservatory

#NASA #landsat #earth #goddardspaceflightcenter #earthobservatory

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A fast-moving wildfire in Maui occurred during a period of strong winds and dry conditions. In this #Landsat 8 image from Aug. 8, infrared light shows the locations of active fires in yellow. The fires burned in the town of Lahaina and northwest of Kihei. go.nasa.gov/3OSyJPU
#NASAEarth

Devastation in Maui

Strong winds and dry weather helped fuel destructive wildfires on Hawaii’s second-largest island.
go.nasa.gov
#landsat #nasaearth

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Wildfire season is picking up in the U.S.

60 fires are burning across nine states in the western U.S., fueled by hot and dry conditions. On August 1, #Landsat 9 captured this image of smoke streaming away from the Bedrock Fire in Oregon. go.nasa.gov/3Kscai8
#NASAEarth

Fire Season Heats Up in the West

Following a slow start to the fire season, several blazes burned across the western U.S. in early August.
go.nasa.gov
#landsat #nasaearth

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Iceland’s Fagradalsfjall volcano is erupting again, igniting unusually large and long-lasting wildfires in nearby moss that grows atop old lava flows. 🌋

This enhanced-color #Landsat 9 image shows active lava (orange) and burn scars from the moss fires. go.nasa.gov/3q98qeJ
#NASAEarth

Lava and Smoke Blanket Fagradalsfjall

Lava is once again spilling from the volcano in southwest Iceland, only this time it is igniting moss fires.
go.nasa.gov
#landsat #nasaearth

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After the breach of Kakhovka Dam in June 2023, the adjacent reservoir drained, leaving farmers in southern Ukraine to cope with depleted water supplies.

These #Landsat images show the reservoir and two canals before (left) and after (right) the breach. go.nasa.gov/3Yh4rt2
#NASAEarth

Canals in Ukraine are Drying Up

After the breach of Kakhovka Dam and the flood that ensued, farmers in the area are coping with depleted water supplies.
go.nasa.gov
#landsat #nasaearth

#landsat #nasaearth #WorldEmbroideryDay

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Wildfires broke out on the Greek island of Rhodes after a prolonged stretch of extreme heat.

Actively burning fires are marked by a red infrared signature in this image captured by #Landsat 8 on July 19. go.nasa.gov/3Q8xwF2
#NASAEarth

Fires Ignite on Greek Islands

Wildfires broke out on Rhodes and other islands amid record heat, forcing thousands to evacuate.
go.nasa.gov
#landsat #nasaearth

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After three quiet years, the Shishaldin volcano in Alaska’s Aleutian Islands erupted this month. 🌋

Ash fallout from the eruptions can be seen on the southern flanks of the volcano in this image captured by #Landsat 8 on July 17, 2023. go.nasa.gov/3DwFIaF
#NASAEarth

Shishaldin Erupts

Ash from recent eruptions blackened the snow-covered flanks of the Alaskan volcano.
go.nasa.gov
#landsat #nasaearth

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Today we’re taking a vacation with #Landsat! 🏖️

Whether you prefer the beach or the desert, Landsat imagery is there to inspire your dream vacation.

Let’s kick off with a relaxing day at the beach. Where should we go– Wildwood, NJ (left) or Spain (right)?
#NASAEarth

#landsat #nasaearth

Now, Landsat Next is on the horizon 🌅

With a trio of smaller satellites that can each detect 26 wavelengths of light and thermal energy,
@nasa/@USGS #Landsat Next will provide finer resolution and more frequent data to monitor Earth’s changing surface. go.nasa.gov/3va23GU

[Video embedded in original tweet]
#NASAEarth

Next up to Continue NASA/USGS’s Landsat Legacy

With a trio of smaller satellites that can each detect 26 wavelengths of light and thermal energy, the Landsat Next mission is expected to look very different from its predecessors that have been observing Earth for 50 years.
Kate Ramsayer (NASA)
#landsat #nasaearth @NASA

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Together, OLI and TIRS study all parts of Earth’s surface every 16 days.

From land to ice to sea, the open data provided by the #Landsat program has contributed to a deeper understanding of our changing planet. #OpenScience
#NASAEarth

#openscience #landsat #nasaearth

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#Landsat 8 and 9 also measure land surface temperature with Thermal Infrared Sensor (TIRS) and TIRS-2. These data are crucial for water management and ice detection.

#DYK that TIRS almost didn’t exist? Now it’s been imaging Earth for over a decade! go.nasa.gov/3OSCDbH
#NASAEarth

Ten Years of TIRS: Data for a Thirsty World | Landsat Science

Landsat 8 very nearly flew without a thermal infrared sensor. This is the backstory of how TIRS made it onto Landsat 8.
https://landsat.gsfc.nasa.gov/article/author/lrocchio/#author (Landsat Science)
#dyk #landsat #nasaearth

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51 years of eyes on Earth 👀🛰

Since 1972, the #Landsat program has been studying Earth’s land, water, ice and more.

There are currently three active @nasa @usgs Landsat satellites orbiting Earth — Landsat 7, 8, and 9 — with Landsat Next on the horizon. go.nasa.gov/3Nxxl4w
#NASAEarth

Landsat Science

This joint NASA/USGS program provides the longest continuous space-based record of Earth’s land in existence.
Landsat Science
#landsat #nasaearth @NASA

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Algae has covered about half of Florida’s largest freshwater lake, Lake Okeechobee, for much of June and early July 2023.

The @nasa/@usgs #Landsat 9 satellite captured this image of the algae bloom on June 12, which is producing harmful toxins. go.nasa.gov/44qmL5a
#NASAEarth

Algae Bloom in Lake Okeechobee

Cyanobacteria covered over half of the surface of Florida’s largest freshwater lake in mid-June 2023.
go.nasa.gov
#landsat #nasaearth @NASA

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Pitstop ahead ✅

Macquarie Island, located halfway between Australia and Antarctica, has been an important stopping place for Antarctic explorers and breeding populations of penguins and seals. 🐧

#Landsat 9 captured this image in 2022. go.nasa.gov/44GtNCu
#NASAEarth

A Waypoint in the Southern Ocean

Remote Macquarie Island has been a stopover for Antarctic explorers and breeding populations of penguins and seals.
go.nasa.gov
#landsat #nasaearth

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Happy #NationalCameraDay! While not a camera per se, #Landsat’s OLI instrument captures beautiful images of our planet. 🌍

The imager on the upcoming Landsat Next satellites will see changes on Earth’s surface with more precise detail than ever before. go.nasa.gov/3CSga7v
#NASAEarth

Landsat Next | Landsat Science

A New and Revolutionary Landsat Mission Landsat Next is on the horizon—the new mission will not only ensure continuity of the longest space-based record of Earth’s land surface, it will fundamentally transform the breadth and depth of actionable info…
Landsat Science
#landsat #nasaearth #NationalCameraDay

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NASA scientists are mapping ground changes on earthquake-prone islands like Tutuila, the largest American Samoa island, in this #Landsat 8 image.🏝️

They found that Tutuila sank an average 6-9 mm per year from 2015-2022, compared to 1-2 mm before 2009. go.nasa.gov/3r1XRKg
#NASAEarth

Tutuila Island, American Samoa

Volcanoes, rainforests, and reefs abound in this tropical U.S. territory.
go.nasa.gov
#landsat #nasaearth

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Noctiluca, is that you?

The @nasa / @usgs #Landsat 9 satellite captured this image of swirling tendrils of phytoplankton – which appear to be Noctiluca scintillans – off the coast of Germany's East Frisia Islands on June 14, 2023. #WorldOceansMonth

🌊 : go.nasa.gov/3JryeZU
#NASAEarth

Noctiluca in the North Sea?

These swirling tendrils of phytoplankton might be Noctiluca scintillans—a type of marine dinoflagellate known to inhabit this area.
go.nasa.gov
#landsat #nasaearth #worldoceansmonth @NASA

#landsat #nasaearth

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Refill, please! 🥛

Shasta Lake, California’s largest reservoir, filled to nearly 100% capacity last month. Heavy rains and meltwater from an above-average snowpack earlier this year helped counter a prolonged drought. go.nasa.gov/43Pmok7
#Landsat watched it fill up ⤵️
#NASAEarth

California Reservoir Rebound

Shasta Lake refilled in spring 2023 after a season of heavy rain and snowmelt.
go.nasa.gov
#landsat #nasaearth

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Are you a summer or winter person? ☀️❄️

The Nemuro Strait in these #Landsat images is one of the largest sand spits in Japan. In the summer, sea grass and kelp can be seen in Notsuke Bay, while in the winter, the bay’s shallow waters freeze over.

go.nasa.gov/3INvvcX
#NASAEarth

A Sandy Haven in Japan

The shallow waters of hook-shaped Notsuke Peninsula shelter sea grass and shrimp in eastern Hokkaido.
go.nasa.gov
#landsat #nasaearth

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Melting winter snowpack and river ice breaking up caused damaging floods along Alaskan rivers in May 2023. go.nasa.gov/3Ww0PlX

These #Landsat images show the Yukon River transforming from a frozen, snowy landscape to a thawed one in just 8 days.
#NASAEarth

A Tumultuous Spring Breakup

Rapid thawing in Alaska caused damaging river floods in May 2023.
go.nasa.gov
#landsat #nasaearth

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Toxic algae blooms are becoming more frequent in some lakes, including Chile’s Lake Villarrica seen in this #Landsat image.

The blooms are likely caused by warmer surface waters and nutrient-laden runoff from urban or agricultural areas. go.nasa.gov/423UHCA
#NASAEarth

Algae in the Andes

Toxic blooms are becoming more frequent in Chile’s Lake Villarrica.
go.nasa.gov
#landsat #nasaearth

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As the glacier stretches and thins, it becomes more prone to rifts that can break and form icebergs.

This @nasa @usgs #Landsat 8 image shows a rift on the floating ice tongue, acquired on May 14, 2023. go.nasa.gov/43bj6ra
#NASAEarth

Retreat at Petermann Glacier

Decades of retreat are visible from above, but harder-to-see changes below the waterline could also affect this iconic glacier’s future.
go.nasa.gov
#landsat #nasaearth @NASA

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These #Landsat images show the same estuary in northeastern China 36 years apart.

A salt-loving seepweed turns the coast a deep red in the fall, which highlights how the estuary has changed due to coastal developments from 1986 (left) to 2022 (right). go.nasa.gov/3oen6YS
#NASAEarth

A Changing Estuary Lined With Red

Satellite observations of seepweed are helping scientists track how these treasured, colorful plants are faring as coastal landscapes in northeastern China change.
go.nasa.gov
#landsat #nasaearth

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The @nasa @usgs #Landsat captured a high-flow experiment – releasing water to simulate natural flooding and carry sediment downstream – at Glen Canyon Dam north of Horseshoe Bend in Arizona on April 27, 2023. go.nasa.gov/42Sdkdy
#NASAEarth

High Flow at Glen Canyon Dam

Water managers released a surge of water from the dam in late April to help preserve shrinking sandbars and shoreline habitats downstream.
go.nasa.gov
#landsat #nasaearth @NASA

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Heavy rains caused flash flooding and landslides in northern Italy on May 2–3, 2023. 🌧

#Landsat satellites captured these enhanced-color images of flooding near the Lamone river before (left) and after (right) the rains. go.nasa.gov/3LPXWaO
#NASAEarth

A Deluge in Italy

Heavy rains caused destructive flash flooding in the Emilia-Romagna region.
go.nasa.gov
#landsat #nasaearth

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The shape of western China’s Qinghai Lake changes as the region’s climate shifts, researchers say.

As water levels drop due to warming trends, dunes build up and divide the lake into several sub-lakes, like Shadao Lake in these #Landsat images. go.nasa.gov/3nHiB9b
#NASAEarth

Shifting Sand Spits

The shape of China’s Qinghai Lake changes in lockstep with climate.
go.nasa.gov
#landsat #nasaearth

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Popocatépetl is one of Mexico’s most active volcanoes. 🌋

Its current eruption has been ongoing since 2005. In spring 2023, both #Landsat 8 (left) and @Space_Station astronauts (right) captured images of the volcanic plumes. go.nasa.gov/3nExl8y
#NASAEarth

Popocatépetl Volcano Keeps on Puffing

One of Mexico’s most active volcanoes continues to put on a show for satellites and astronauts.
go.nasa.gov
#landsat #nasaearth

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Multiple studies show dangerous algae blooms have become more frequent and intense in the Gulf of Mannar since 2019.

This #Landsat 9 image from Sep. 23, 2022 shows a bloom in the Gulf of Mannar, off the southeastern coast of India. go.nasa.gov/42xvhhx
#NASAEarth

Deadly Blooms in the Gulf of Mannar

Though Noctiluca scintillans blooms have long been noted in the shallow gulf, they have become more frequent and intense since 2019.
go.nasa.gov
#landsat #nasaearth

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Update on Tulare Lake: still growing.

The historic lakebed, now covered with farms that grow a variety of crops, is flooded after two major storms hit southern California. This enhanced-color image by #Landsat highlights the water in dark blue. go.nasa.gov/3NKKJCH
#NASAEarth

Tulare Lake Grows

Flooding in the California lakebed continues to spread as spring brings snowmelt from the Sierras.
go.nasa.gov
#landsat #nasaearth

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Did you guess it? It’s the Diamantina River in Australia! Although dry for most of the year, seasonal rainfall sends water coursing through its channels. In this enhanced-color image captured by #Landsat 8, water and saturated soil are shades of blue.
🔗earthobservatory.nasa.gov/imag…
#NASAEarth

Seasonal Flooding of the Diamantina River

False-color images from Channel Country in the Australian Outback reveal a barren landscape transformed.
earthobservatory.nasa.gov
#landsat #nasaearth

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Scientists are using artificial intelligence to analyze 50 years’ worth of @usgs @NASA_Landsat data. 🌏 🛰️

These tools help scientists identify cloud cover or wildfire smoke in #Landsat images, map changes in land cover, and more. go.nasa.gov/3HsiNzB
#NASAEarth

From Orbit to A.I.—Harnessing Machine Learning with Landsat Data | Landsat Science

Over the past few years, machine learning techniques have been increasingly used to analyze the vast amount of data collected by the Landsat mission, which has been circling the globe for over 50 years.
https://landsat.gsfc.nasa.gov/article/author/lrocchio/#author (Landsat Science)
#landsat #nasaearth

#landsat #nasaearth

#landsat #nasaearth

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