Images

Instead, the lava lake was spattering at points on the west and northwest side of the lake. This photo shows the spattering on the lake's northwest side. The pit wall to the right overhangs the lake by about 10 m (33 ft). If the lake continues to rise, pieces of this overhang may collapse (note the cracks at lower right marking planes of weakness).

The main entry point of the Kupapa‘u ocean entry comprises a few small streams of lava, seen here cascading into the water.

The ocean entry east of the National Park boundary near Kupapa‘u Point remains weak, with a wispy plume, as seen in this photo looking southwest along the coast.

This image was captured on Friday, August 9, by the Advanced Land Imager sensor aboard NASA's Earth Observing 1 satellite, and shows Kīlauea volcano from the summit down the east rift zone. Although this is a false-color image, the color map has been chosen to mimic what the human eye would expect to see.

Using a telephoto camera lens, an HVO scientist captured this view of the Kupapa‘u Point ocean entry on the morning of August 7. Although no lava flow activity was observed on the coastal plain near the ocean entry, small streams of lava still poured into the sea.

Zooming his camera in even more.... An up-close view of the easternmost lava streams entering the ocean. Reminder to all lava observers: Peering through a telephoto lens is the safest way to view Kīlauea Volcano's ocean entry.

Crews survey Loowit Creek channel and other points inside the crater. Elevation information is used to make a longitudinal profile of the channel, characterizing areas where sediment is either deposited or transported and how the channel is changing with time. View to the north, with Spirit Lake and Mount Rainier in the background.

This summer, crews made significant modifications to a monitoring station on the southwest flank of Mount St. Helens, greatly improving its operability in winter.

Lava enters ocean at Kupapa‘u Point, Kīlauea Volcano, Hawai‘i. Photographed with a telephoto lens, the safest way to view the interaction of lava and seawater on the edge of an active delta.

Loowit Creek is fed from a mixture of springs (groundwater) and Crater Glacier meltwater. Observations are made of stream turbidity, or of the amount of fine particles suspended in the water. View is to the south, toward the crater.

A survey base station is established using a RTK-GPS receiver with mobile units to collect data points in and around the crater. Information will be used to monitor surface changes, deformation, erosion and aggradation inside the crater. This type of technology is precise to the centimeter. View to the south, toward Crater Glacier and the lava domes.

Fieldwork includes direct observations of changes to streams and stream beds to determine how changes will affect the downstream transportation of sediments. Here, the braided North Fork Toutle (left) joins Carbonate Springs Creek (right). View to the east.

Monitoring stations need to be portable. Weighing about 500 pounds, this "swing set" structure can be airlifted into place or moved, as volcano monitoring needs change. An additional 1,000 pounds of equipment will need to be added to make the station fully functional.

A survey base station is established using a RTK-GPS receiver with mobile units to collect data points in and around the crater. Information will be used to monitor surface changes, deformation, erosion and aggradation inside the crater. This type of technology is precise to the centimeter. View is to the south of Mount St.

Crews access remote monitoring sites by helicopter. Pictured out the window of the helicopter is a GPS and camera station, dedicated to remotely monitoring changes inside the crater and under the crater floor.

In summer, the crater of Mount St. Helens is filled with a near constant sound of rockfall from the steep 600 m high (about 2000 feet) crater walls. The falling rock kicks up ash and dust (pulverized rock) as it tumbles onto the crater floor. View of east crater wall.

Monitoring and upgrading ground-based sensor networks at the most active volcano in the Cascades is an on-going process. Crews made significant modifications to a seismic monitoring station on the southwest flank of Mount St. Helens, greatly improving its operability in winter.

Crater Glacier, located inside the crater of Mount St. Helens, continues to move at an average rate of about 11 cm per day (4.3 inches). During warm weather months, meltwater creates erosional channels on the crater floor.

The vehicle-based UV spectrometer is routinely driven beneath the summit and East Rift Zone gas plumes to measure sulfur dioxide gas emissions during typical trade-wind conditions.

Steaming continues on the 1980-1986 dome. View to the south and the east arm of Crater Glacier.

A fumerole near the 1980-86 dome keeps an open hole in the east arm of Crater Glacier. The hole is approximately 12 m (40 ft) in diameter, easily wide enough to hold a school bus and deep enough so you could not see the bus' top. View to the south.