Images

This Unoccupied Aircraft Systems (UAS) photo from Tuesday, February 9, shows the main island in the Halema‘uma‘u lava lake. The lake surface on the eastern (lower-center) side of the island has been stagnant and crusted over recently. The western fissure that has been feeding the lava lake is visibly degassing in the background.

A zoomed-in aerial view of the active west vent in Halema‘uma‘u crater taken during the helicopter overflight on February 9. Lava erupted from the west vent continues to enter the active lava lake through an inlet at the base of the cone. SO₂ emission rates remain elevated and were measured at 2,200 t/d on February 1. USGS photo taken by B. Carr.

Photo of the west vent in Halema‘uma‘u lava lake at Kīlauea summit. Photo taken from the west side of Kīlauea caldera rim taken at 3:04 p.m. HST. This photo shows the west vent feeding the active western part of the lava lake, as well as the inactive eastern part of the lava lake.

The water quality sample is being taken at Saugatuck River near Westport, CT 01209500.

This photo shows an area near the center of Kīlauea's summit lava lake in Halema‘uma‘u, where lobes of lava from the western fissure (beyond the left edge of this photo) would episodically advance and stall.

This photo shows a close-up of the lava stream in the inlet at the western fissure, at Kīlauea's summit lava lake in Halema‘uma‘u. The flow velocity today was relatively sluggish, consistent with the overall reduction in lake activity over the preceding few days. USGS photo by M. Patrick.

No major changes were observed over the weekend at the lava lake within Halema‘uma‘u crater, at the summit of Kīlauea. On Saturday, February 6, the lake activity seemed slightly diminished, likely due to summit deflation. This photo shows the western fissure.

A close-up view of one of the smaller islands in the stagnant eastern portion of the Halema‘uma‘u lava lake at Kīlauea Volcano's summit. Debris from a partial collapse of this island is visible on the stagnant lake surface (lower right) which exposed the red oxidized interior.

A close view of the active western portion of the Halema‘uma‘u lava lake at Kīlauea summit on Friday, February 5, 2021. The active west side of the lake had numerous surface breakouts and foundering crust. Lava effusion continues into the lava lake from the base of the west vent (left). USGS photo taken by K. Lynn.

A zoomed-in view of a section of the western active lava lake within Halema‘uma‘u at Kīlauea summit. Several areas of crustal foundering on the lava lake surface were visible during the afternoon of Friday, February 5, 2021. USGS photo taken by K. Lynn.

A concrete-lined stretch of the Los Angeles River that runs near Sepulveda Dam.  USGS streamgage 11092450 can be seen in the lower left along the river wall. Restoration is planned for this stretch of the river that runs through the San Fernando Valley.

On February 4, HVO geologists observed brief heavy rainfall on the lava lake within Halema‘uma‘u crater at the summit of Kīlauea. The rain flashed to thick white steam as it hit the hot lava surface. The western vent, visible in the lower left, continued to supply lava to the western active portion of the lava lake. USGS photo taken by J.

The GeoEel is a multichannel digital streamer system, with hydrophones in a long, green hose. The streamer is towed in the water from a vessel like a long snake, and the hydrophones "listen" for and record the signals from the seismic sound source.

The Helikite in action, being walked by USGS scientist Chris Sherwood and WHOI scientist Peter Traykovski, the helium powered balloon kite will be used to survey the DUNEX experiment site.

View of the lava lake in Halema‘uma‘u from the western rim of the crater, looking eastward. Volcanic gases emitted from the western fissure obscure the built-up spatter cone. The active western portion of the lake (lower) has a silvery grey color, while the stagnant eastern portion of the lake (upper) is a dark duller grey.

The 26th annual Mineral Commodity Summaries report from the U.S. Geological Survey National Minerals Information Center is the earliest comprehensive source of 2020 mineral production data for the world.

A closer view of the lava lake in Halema‘uma‘u crater from the helicopter. Most of the lake surface in the foreground (east) is solidified on the surface, with active lava limited to the western end of the lake, in the distance. Rockfall debris can be seen on the southern margin of the lake (left side of photo). USGS photo by M. Patrick.

The USGS landslide team monitors and continues to update the hazard map models based on data collected in burn areas. This information improves future models and provides better hazard assessments used by officials for emergency response and decision making. Many of the steep hillsides burned and denuded in California fires repel water rather than soak it in.

Cape Cod National Seashore beach grass

In February of 2021, scientists from the USGS Woods Hole Coastal and Marine Science Center and Woods Hole Oceanographic Institution (WHOI) conducted near-shore bathymetric surveys on Cape Cod National Seashore. Bathymetry is the study of underwater depth of ocean floors or lake floors.

Scientists from the USGS Woods Hole Coastal and Marine Science Center using a helium powered kite-balloon at Head of the Meadow Beach and Marconi Beach, Cape Cod National Seashore in Massachusetts.