Images

A tumulus at Captain Jack's stronghold within Lava Beds National Monument .

Island of Hawai‘i map, showing Mauna Loa and the other four volcanoes that make up the island. Mauna Loa structural features include summit caldera, rift zones, radial vents, and historical lava flows.

Photo of Sunset Beach, Florida, during tropical storm Colin in June 2016. The storm resulted in large waves and elevated water levels that caused erosion in this area, as can be seen in the scarp forming at the vegetation line. CMHRP researchers surveyed the elevation of the beach before and after the storm to quantify the storm's impacts.

Mount Hood dominates the skyline outside Portland, Oregon on a clear day. A major eruption of Mount Hood would pose a great hazard to the regional economy.

Underwater photograph off Molokaʻi Hawaiʻi, showing some of the impacts of land-based pollution, such as terrestrial sediment, on coral reefs: burial by sediment, algal overgrowth, and coral bleaching.

Image showing a study area from Boston Harbor to the mouth of Cape Cod Bay including some images of geophysical and sample data available in the associated report.

Volcanic Hazard Assessment for the Lassen Region, California is based upon a comprehensive investigation of the eruptive history and possible future eruption scenarios with associated volcanic hazards.

Aerial imagery sequence of Indian Point, Louisiana, showing the contraction of the peninsula marsh in response to shoreline erosion since 1950.

View upslope to the headscarp of the Red Bluffs landslide, seen from the surface of the Crescent Lake landslide, in the Columbia Gorge.

Map of Yellowstone National Park showing Brimstone Basin and other areas known to release carbon dioxide from the ground.

Ice Springs cinder cone and lava flow erupted 720 years ago in the Black Rock Desert Volcanic Field, Utah.

Satellite image of Hurricane Sandy (courtesy NASA GOES http://weather.msfc.nasa.gov/GOES/)

Acoustic backscatter intensity data are an indication of the relative hardness or softness of the sea floor, which is closely related to sediment texture and cohesion. The map shows acoustic backscatter intensity of the sea floor in the Buzzards Bay, Massachusetts.

The east face of Middle Sister is 350 m (1150 ft) high. Ice-sculpted pile of lavas at right, variously called "Black Hump," "Prouty Point," or "Step Sister," has 190 m of relief and consists of at least five flows.

Aerial view of a lava tube trace (dark sinuous shape) along the ground surface at Medicine Lake Volcano, California.

Lassen Peak viewed from the south at the summit of Brokeoff Volcano, Lassen Volcanic National Park.

Summary of power system impacts following 12 historic eruptions.

Tephra-laden water filtering through the turbines has necessitated the replacement of four turbines in 21 years. The Agoyan Dam and its (orange) floodgates are designed to let highly turbid water bypass the turbines so as to avoid accelerated wear of generation components

Mount Hood looms above the Columbia River and Glenn Jackson Bridge. Excess sediment from eruptions of Mount Hood have choked the river and caused flooding in the past.

Mount St. Helens and the industrial waterfront area of North Portland, Oregon along the Willamette River in the foreground. Excess sediment from volcanoes can significantly impact river traffic.

"Stevens and Party at Kīlauea" - U.S. Minister Stevens is second from the right. Demosthenes Lycurgus and Alex Lancaster are first and second from the left, respectively.