Images

Liquefaction-related features and cracks along the sandy shore next to Stanley Lake.

Clear weather allowed another water pond measurement to be made this morning. Results show continued slow rise of the water level. No major changes were observed. Note the former HVO observation tower can be seen above the geologist's helmet.

Day to day changes in the color of the water pond are common. This morning the pond had a browner hue compared to the previous observation on April 1, when the pond color was slightly more greenish yellow (see photo below).

Physical map of the western USA showing locations of strong earthquakes in March 2020 and Basin and Range extensional province. The Basin and Range stretches from the Sierra Nevada in the west to the Wasatch and Teton mountains in the east, and from central Idaho and southwest Montana in the north to Mexico in the south.

An aerial view of landslide damage after Hurricane Maria in Utuado municipality, Puerto Rico.

USGS ground failure experts examine landslides after Hurricane Maria in the municipality of Las Marias, Puerto Rico.

Overview of Taan Fiord. Inset showing location of Taan Fiord, Alaska in Wrangell St. Elias National Park and Preserve. Taan Fiord is about 100 km from the nearest town, Yakutat, AK. Landsat 8 image of Taan Fiord acquired in 2016. Vegetation loss is clear near the water line.

The water pond from the webcam site. This view provides a better view of the greenish zone in the west end of the pond (bottom right of photo).

A closeup of the northern shoreline shows how opaque the water is against the rocks. USGS photo by M. Patrick.

Damage from a major post-wildfire landslide that occurred on 25 December 2003 near Devore, San Bernardino County as a result of the Old/Grand Prix fires that ran through the San Bernardino Mountains.

Damage from a major post-wildfire landslide that occurred on 9 January 2018 near Montecito, Santa Barbara County as a result of the 2017 Thomas Fire.

Alex Nichols, Wayne Baldwin, and Eric Moore deploying a streamer in Puerto Rico.

USGS marine technician Wayne Baldwin prepares to deploy the hydrophone array during a seismic research cruise off the southwest coast of Puerto Rico on board the R/V Sultana in March 2020.

USGS marine technicians Alex Nichols (L) and Eric Moore (R) deploy the hydrophone array on a seismic research cruise off the southwest coast of Puerto Rico aboard the R/V Sultana in March 2020.

USGS research geologist Jason Chaytor (L) and marine technicians Alex Nichols (center) and Eric Moore (R) deploy the “sparker” sound source on a seismic research cruise off the southwest coast of Puerto Rico aboard the R/V Sultana in March 2020.

Mushroom Pool, in the Lower Geyser Basin of Yellowstone National Park, as it looked in June 23, 1967. The sample that would be the source of Thermus aquaticus strain YT-1 came from this hot spring. Pictured is Thomas Brock standing near the edge of the pool. Image from the self-published "A Scientist in Yellowstone National Park" (Brock, 2017).

View inside the Woods Hole Coastal and Marine Science Center Sediment Analysis Laboratory showing the Beckman Coulter Multisizer 3 and Horiba LA-960 laser diffraction unit.

View inside the Woods Hole Coastal and Marine Science Center Sediment Analysis Laboratory showing the laboratory computer workstation, precision balances, and interior of the oven and sieving room.

This timelapse sequence shows the water pond in Halema‘uma‘u Crater, at Kīlauea's summit, between November 1, 2019, and March 26, 2020. Over this time the water level rose approximately 14 meters (46 feet), equivalent to 67 cm (about 2 feet) per week. The timelapse shows one image per day (with a few cloudy images removed), and is looped several times.

Davina Passeri of the St. Petersburg Coastal and Marine Science Center presents a poster about coastal change research in Dauphin Island, Alabama at the USGS Southeast Regional Meeting in February 2020.

Ilsa Kuffner speaks to a group at the USGS Southeast Regional Meeting in February 2020 about coral research conducted by the St. Petersburg Coastal and Marine Science Center