Articles tagged "remote sensing"

great sitkin july 22 2021 SWIR sentinel 2 f

Magma rising at Great Sitkin volcano, Alaska

A lava dome-like feature formed in the summit crater of Great Sitkin volcano, Alaska, suggesting magma is rising near the surface. As a result, the Alaska Volcano Observatory (AVO) has raised the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH. A...

July 24, 2021

vigan flood sept 2018 2

WorldFloods - AI pioneered at Oxford for global flood mapping launches into space

An artificial intelligence system developed by Oxford researchers and ESA's Φ-lab called Worldfloods, which will pioneer the detection of global flood events from space, has launched from Cape Canaveral in Florida, U.S., at 19:00 UTC on June 30, 2021. The...

July 11, 2021

saharan dust june 23 2021 nasa terra modis f

Very thick Saharan dust cloud moving over the Mediterranean into Italy and SE Europe

A very thick Saharan dust cloud is moving over the Mediterranean Sea into Italy and Southeast Europe over the past couple of days. Coupled with exceptionally high temperatures affecting the region, this dust is contributing to lower visibility, respiratory issues,...

June 23, 2021

locust swarm fao

Satellite-assisted models for detection of desert locust breeding grounds

NASA-funded researchers examined satellite-based soil moisture and soil composition in the hope to predict optimal breeding sites of locust swarms. The team is now working to integrate the data into the FAO locust support to be better prepared for the next major...

May 16, 2021

gnss station 2

Researchers develop first space-based system that can monitor earthquakes and tsunamis

Researchers have developed the first-of-its-kind space-based monitoring system that uses the Global Navigational Satellite System (GNSS) to measure crustal deformation, which can provide seismic monitoring for natural disasters like large earthquakes and tsunamis....

May 16, 2021

lake cuitzeo mexico may 4 2021 f

Lake Cuitzeo, the second-largest lake in Mexico dries up

At the end of April 2021, drought conditions were covering 85 percent of Mexico. Numerous lakes and reservoirs have dried up, or are in the process of drying up, including the country's second-largest body of freshwater -- Lake Cuitzeo. Before the current...

May 11, 2021

laguna del farrallon veracruz sentinel 2 april 23 2021 f

Laguna del Farallón in Veracruz lost 75 percent of its water in several months, Mexico

Laguna del Farallón -- a 180 ha (445 acres) lagoon in Veracruz, Mexico -- has lost 75% of its water over the past several months due to lack of rain and drought. As of April 22, drought conditions are covering 85 percent of Mexico. In Veracruz, 32 of the...

April 26, 2021

soufriere st vincent eruption april 2021 f

Earth from Orbit: Volcanic eruption at Soufriere St. Vincent

La Soufrière volcano on the Caribbean island of Saint Vincent began erupting on April 9, 2021, spewing ash at least 7.6 km (25 000 feet) above sea level. The volcano continued to erupt over the next several days, with multiple violent explosions, allowing...

April 16, 2021

alaska volcanic eruption 2009

Detecting significant thermal unrest years before volcanic eruption

Scientists at NASA’s Jet Propulsion Laboratory (JPL) and the University of Alaska (UA) have developed a new method that may lead to earlier predictions of volcanic eruptions. There are telltale warning signs that a volcano is likely to erupt in the future,...

April 14, 2021

oaxaca earthquake june 23 2020 by ESA Copernicus

ESA's Sentinel-1 maps M7.4 Oaxaca earthquake from space, Mexico

ESA's Copernicus Sentinel-1 mission mapped the powerful M7.4 earthquake that struck Mexico's southern state of Oaxaca on June 23, 2020. The satellite radar data are being used to examine the effects of tremors on land. At around 15:20 UTC (10:20 LT) on June...

July 25, 2020

hurricane june 27 2020

Eyes in the Sky: How satellites drastically improved hurricane forecasting

Satellite technology has drastically changed how we forecast hurricanes as it has allowed us to track the storm's location, movement, and intensity, from formation to dissipation. On September 8, 1900, a powerful hurricane hit Galveston, Texas, which resulted in...

July 04, 2020

peru landslide nasa june 23 2020 ft img

Massive landslide in Achoma creates natural dam along Colca River, Peru

NASA's Operational Land Imager (OLI) on Landsat 8 captured the destruction from a landslide in Achoma, Peru, around mid-June, which not only destroyed properties but also created a natural dam along the Colca River. In the early hours of June 18, a hillside in...

July 03, 2020

lonar crater turns red india sentinel 2 june 10 2020 f

50 000-year-old meteorite crater lake turns red overnight, India

Lonar Lake, a meteorite crater lake formed 50 000 years ago in western Maharashtra, India has turned reddish-pink overnight on June 10, 2020, leaving nature enthusiasts stunned. The color change is currently attributed to changing salinity levels and the presence of...

June 12, 2020

functional diversity of forests with remote sensing

Mapping functional diversity of forests with remote sensing

Productivity and stability of forest ecosystems strongly depend on the functional diversity of plant communities. UZH researchers have developed a new method to measure and map functional diversity of forests at different scales – from individual trees to...

November 19, 2017