Images

A stream of lava cascades down the sea cliff at the ocean entry, near the eastern boundary of the National Park. This spot was one of several where lava was reaching the water.

Channel system at Coldwater Lake outlet revealed after alder trees drop leaves, South Coldwater Creek, Mount St. Helens, southeast view to Johnston Ridge.

At around 7:30 a.m. HST, Rock-fall scar near the right edge at Halema‘uma‘u. Half an hour later, the black streak was no longer visible.

Trunk River is an example of a tidally restricted impounded wetland (Cape Cod, MA).

Mount Hood in the not-so-far distance beyond downtown Portland, Oregon. Photograph taken at the top of the Portland Aerial Tram line on Marquam Hill.

Shaded relief image of Vineyard Sound, MA

Photograph of the channel station showing the laser distance meter (in red circle) high above the channel used to measure stage (height) of flow in the channel.

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.

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.

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