Videos

Infrasound is an important tools for volcanologists, allowing them to detect eruptions, locate the source of explosions, and understand important parameters of volcanic events. John Lyons discusses how the technique is used by the USGS, especially in Alaska, and how we are working to help study infrasound around the world.
 

This summer in central India, a mystery in color emerged. In the space of just days, the surface of Lonar Lake turned bright pink, then returned to green. As scientists study the cause of the event, other lakes around the world offer clues.

Will my existing workflow still be supported? Landsat downloads will continue to be available via EarthExplorer, LandsatLook, and other familiar USGS tools as they are today, without a noticeable difference to the user. The Landsat record will also remain free and open, with downloads available at no charge to the user.
 

Mike Poland, Scientist-in-Charge of the Yellowstone Volcano Observatory, gives an overview of activity at Yellowstone during July 2020.

 

This timelapse video at Kīlauea's summit covers approximately 30 minutes and shows the dynamic nature of the water lake in Halema‘uma‘u crater. Steam from the hot water surface is constantly shifting in the winds, while the migrating color boundaries on the water surface appear to show circulation in the lake. USGS video by M. Patrick.

This video is a three-dimensional (3D) view of Lake Powell topobathymetric digital elevation model, which consists of topography (land elevation) and bathymetry (water depth). The 3D topobathymetric model was developed by the U.S.

National Hydrography Advisory Call:

This video highlights two mosaics of the Jezero crater landing site on Mars made by the USGS Astrogeology Science Center to support the Mars 2020 mission, as well as several key locations that the Perseverance rover may visit once it is on the surface.

Mount Nyiragongo is a stratovolcano in the Democratic Republic of the Congo. It’s one of the most active in the world, having exhibited volcanic activity at least once every 3 months since May 17, 2002.
 

LCMAP Collection 1 includes 10 Science Products, offering different perspectives for the study of land change across the country, through time. The primary and secondary land cover products, provide important information on the most likely land cover class for each pixel. Their associated confidence products record the level of confidence in each classification.

The video describes work by Jay Wellik, a USGS seismologist and his colleagues with the Volcano Disaster Assistance Program (VDAP). They assisted Indonesia's CVGHM in responding to the 2017 activity/eruption at Mt. Agung, on the island of Bali.

Summer vacation plans changed for many in 2020. Whatever your plans, Landsat can take you on a virtual road trip. Landsat 8, in its sun-synchronous polar orbit, views every national park in the U.S. every 16 days and gathers more photographic data than the most ambitious of tourists.

 

This is an animation showing the changing conditions of USGS streamgages from April 1, 2020 to June 30, 2020. The conditions shown range from the driest condition seen at a gage (red open circles) to the wettest (blue closed circles). There is also a purple ring added to indicate gages that are flooding.

Mike Poland, Scientist-in-Charge of the Yellowstone Volcano Observatory, gives an overview of activity at Yellowstone during June 2020.

 

Multiple stressors such as climate change impacts and invasive species can have compounding impacts on native inland fish.

This thermal video shows typical activity at Kīlauea's summit water lake. Steam carried across the water surface often masks thermal features on the underlying water surface. USGS video by M. Patrick.

The video describes USGS efforts to improve lahar (mudflow) monitoring at Mount Rainier, an ice-clad volcano in Washington State with potential for dangerous volcanic mudflows. The presentation was given to colleagues in the US and in Ecuador by Andy Lockhart.

Reflections on the Ridgecrest earthquake sequence one year after from a few USGS employees. Employees discuss when they first heard about the magnitude 6.4 and notable professional experiences that happened afterwards.
 

This video describes USGS use of Unoccupied Aircraft Systems (UAS) or "drones" for use in 2018 at Kilauea Volcano in Hawaii. The speaker, Angie Diefenbach, is a leading expert in use of UAS for volcano surveillance and research. The presentation was given in June 2020 to colleagues in Ecuador who are interested in applications of UAS at their volcanoes.

In a remote part of the Sahara Desert in Egypt, center pivot irrigation fields fill the landscape. Thanks to the Landsat archive, we can see how dramatically this area has changed over the last 35 years. But until the growth in irrigation, this part of the world hadn't changed much from a satellite's perspective.

This video describes Step 2 of the Land Treatment Exploration Tool. In Step 2 the user defines their planned treatment boundary. The user can load a zipped shapefile or on-screen digitize their boundary.