Image from VIIRS instrument on the NASA-NOAA Suomi NPP satellite

Massive sulfur dioxide plumes

On May 3, the Kilauea volcano on Hawaii's Big Island erupted from new fissures and sent lava flowing over streets and neighborhoods. As the disaster response on the ground led by the U.S. Geological Survey kicked into gear, managers from NASA's Earth Science Disasters Program heard from response agencies and sent out a call to NASA's own researchers, data managers, and satellite teams: What can we do to help?

With an array of sophisticated Earth-observing sensors in orbit and partnerships with space agencies around the globe, NASA had a lot of assets to offer.

"One of the first things emergency responders wanted to know was where the lava was coming out, where are all the fissures," said J. Carver Struve, NASA emergency management co-lead at NASA Headquarters in Washington, who coordinates the organization and distribution of data and satellite imagery from seven NASA centers.

In total, seven instruments on board five NASA and partner satellites provided key information on eruption patterns and atmospheric impacts of the Kilauea eruption. These included detection of active fissures, fires, ash and sulfur dioxide plumes, deformation of the ground caused by magma movement, and the height and composition of volcanic plumes. Even astronauts on board the International Space Station were able to view the eruption, sending digital camera images to the USGS and response community. The European Space Agency and Japan Aerospace Exploration Agency also contributed data to the effort.

Feedback from responders in Hawaii using the data has led to the creation of additional data products tailored to their immediate needs. "We're providing actionable scientific products to teams on the ground to support response activities and fill any gaps they may have in their information as the disaster is evolving," said Struve.

The Disasters Program data products and images are available at these sites:



In addition to providing data to support recovery and resilience planning, NASA has a long-standing research effort to understand volcanic processes before, during and after eruptions, insights that can also serve as a window into understanding volcanoes on other planets. The current Kilauea eruption is an opportunity to evaluate the performance of instruments to estimate lava flow rates and volume, crucial parameters in volcanic models.

NASA is contributing to the understanding of the eruption using airborne assets. The G-III research aircraft is flying an all-weather, high-resolution instrument called the Glacier and Ice Surface Topography Interferometer (GLISTIN) that was developed to study small changes in ice sheets. The science team, based at NASA's Jet Propulsion Laboratory in Pasadena, California, previously used GLISTIN to study the surface topography of Kilauea's East Rift Zone.

A sequence of repeat flights during the current eruption are using GLISTIN to detect changes in Kilauea's topography associated with the new lava flows, with the goal of measuring the erupted volume as a function of time and ultimately the total volume of the event. Such observations are extremely useful to quantitatively evaluate models for evolution of volcanic processes.

NASA's Disasters Program supports application science and mobilizes for intensive risk events globally, covering a range of natural hazards -- earthquakes, tsunamis, wildfires, floods, landslides, severe weather, winter storms, tropical cyclones, volcanoes - and human-made events such as oil spills and industrial accidents.

NASA uses the vantage point of space to understand and explore our home planet, improve lives and safeguard our future. The agency brings together technology, science, and unique global Earth observations to provide societal benefits and strengthen our nation.

News Media Contact

Alan Buis
Jet Propulsion Laboratory, Pasadena, California